阅读说明：本技术 用于制备含羟基的烯烃共聚物的方法及其产物和应用 (Method for preparing olefin copolymer containing hydroxyl and product and application thereof ) 是由 高榕 郭子芳 周俊领 林洁 赖菁菁 李昕阳 顾元宁 安京燕 于 2020-06-05 设计创作，主要内容包括：本发明涉及一种用于制备含羟基的烯烃共聚物的方法及由所述方法制备的含羟基的烯烃共聚物。所述用于制备含羟基的烯烃共聚物的方法包括在催化剂、改进剂和任选地链转移剂的存在下使烯烃和烯烃醇进行聚合反应,使用的催化剂包括式I所示的二亚胺金属配合物。根据本发明的制备方法能够制得球形和/或类球形聚合物,在工业应用中具有良好的前景。(The present invention relates to a method for preparing a hydroxyl group-containing olefin copolymer and a hydroxyl group-containing olefin copolymer prepared by the method. The process for preparing a hydroxyl group-containing olefin copolymer comprises polymerizing an olefin and an olefin alcohol in the presence of a catalyst, an improver and optionally a chain transfer agent, the catalyst used comprising a diimine metal complex of formula I. The preparation method can prepare spherical and/or spheroidal polymers and has good prospect in industrial application.)

1. A process for preparing a hydroxyl group-containing olefin copolymer, which comprises polymerizing an olefin and an olefin alcohol in the presence of a catalyst, an improver and optionally a chain transfer agent to produce the hydroxyl group-containing olefin copolymer,

the catalyst comprises a main catalyst and an optional cocatalyst, wherein the main catalyst comprises an amino imine metal complex shown as a formula I:

in the formula I, R₁And R₂The same or different, independently selected from C1-C30 hydrocarbyl containing or not containing substituent; r₃Selected from hydrogen and substituted or unsubstituted C1-C20 hydrocarbyl; r₅-R₈The same or different, each independently selected from hydrogen, halogen, hydroxyl, C1-C20 alkyl with or without substituent; r₅-R₈Optionally forming a ring with each other; r₁₂Selected from C1-C20 substituted or unsubstituted hydrocarbon groups; y is selected from non-metal atoms of group VIA; m is a group VIII metal; x is selected from halogen, C1-C10 alkyl with or without substituent and C1-C10 alkoxy with or without substituent.

2. The method of claim 1, wherein R is₁And R₂Selected from substituted or unsubstituted C1-C20 alkyl and/or substituted or unsubstituted C6-C20 aryl, preferably R₁And/or R₂Is a group of formula II:

in the formula II, R¹-R⁵The aryl group is the same or different and is independently selected from hydrogen, halogen, hydroxyl, C1-C20 alkyl with or without substituent, C2-C20 alkenyl with or without substituent, C2-C20 alkynyl with or without substituent, C3-C20 cycloalkyl with or without substituent, C1-C20 alkoxy with or without substituent, C2-C20 alkenyloxy with or without substituent, C2-C20 alkynyloxy with or without substituent, C3-C20 cycloalkoxy with or without substituent, C6-C20 aryl with or without substituent, C7-C20 aralkyl with or without substituent and C7-C20 alkaryl with or without substituent; r¹-R⁵Optionally forming a ring with each other;

preferably, in formula II, R¹-R⁵The aryl group is the same or different and is independently selected from hydrogen, halogen, hydroxyl, C1-C10 alkyl with or without substituent, C2-C10 alkenyl with or without substituent, C2-C10 alkynyl with or without substituent, C3-C10 cycloalkyl with or without substituent, C1-C10 alkoxy with or without substituent, C2-C10 alkenyloxy with or without substituent, C2-C10 alkynyloxy with or without substituent, C3-C10 cycloalkoxy with or without substituent, C6-C15 aryl with or without substituent, C7-C15 aralkyl with or without substituent and C7-C15 alkaryl with or without substituent;

m is selected from nickel and palladium; y is selected from O and S; x is selected from halogen, C1-C10 alkyl with or without substituent and C1-C10 alkoxy with or without substituent, preferably selected from halogen, C1-C6 alkyl with or without substituent and C1-C6 alkoxy with or without substituent; r₁₂Selected from the group consisting of substituted or unsubstituted C1-C20 alkyl, preferably substituted or unsubstituted C1-C10 alkyl, more preferablyPreferably C1-C6 alkyl with or without substituents;

R₃selected from the group consisting of substituted or unsubstituted C1-C20 alkyl, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C7-C20 aralkyl, and substituted or unsubstituted C7-C20 alkaryl;

preferably, R₃Selected from the group consisting of substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C6-C10 aryl, substituted or unsubstituted C7-C15 aralkyl, and substituted or unsubstituted C7-C15 alkaryl, more preferably, R₃Is selected from C1-C6 alkyl with or without substituent, such as methyl, ethyl, propyl or butyl.

3. A process according to claim 1 or 2, wherein the aminoimine metal complex is of formula III:

in the formula III, R¹-R¹¹The aryl group is the same or different and is independently selected from hydrogen, halogen, hydroxyl, C1-C20 alkyl with or without substituent, C2-C20 alkenyl with or without substituent, C2-C20 alkynyl with or without substituent, C3-C20 cycloalkyl with or without substituent, C1-C20 alkoxy with or without substituent, C2-C20 alkenyloxy with or without substituent, C2-C20 alkynyloxy with or without substituent, C3-C20 cycloalkoxy with or without substituent, C6-C20 aryl with or without substituent, C7-C20 aralkyl with or without substituent and C7-C20 alkaryl with or without substituent;

R₃、R₁₂y, M and X have the same definitions as formula I.

4. The method of any one of claims 1-3, wherein R is¹-R¹¹The aryl group is the same or different and is independently selected from hydrogen, halogen, hydroxyl, C1-C10 alkyl with or without substituent, C2-C10 alkenyl with or without substituent, C2-C10 alkynyl with or without substituent, C3-C10 cycloalkyl with or without substituent, C1-C10 alkoxy with or without substituent, C2-C10 alkenyloxy with or without substituent, C2-C10 alkynyloxy with or without substituent, C3-C10 cycloalkoxy with or without substituent, C6-C15 aryl with or without substituent, C7-C15 aralkyl with or without substituent and C7-C15 alkaryl with or without substituent;

preferably, R¹-R¹¹Each independently selected from hydrogen, C1-C10 alkyl, halogenated C1-C10 alkyl, C1-C10 alkoxy, halogenated C1-C10 alkoxy and halogen, more preferably from hydrogen, C1-C6 alkyl, halogenated C1-C6 alkyl, C1-C6 alkoxy, halogenated C1-C6 alkoxy and halogen.

5. An aminoimine metal complex according to any of claims 1 to 4, wherein the substituents are selected from halogen, hydroxy, C1-C10 alkyl, halogenated C1-C10 alkyl, C1-C10 alkoxy and halogenated C1-C10 alkoxy; the substituents are preferably selected from halogen, hydroxy, C1-C6 alkyl, halogenated C1-C6 alkyl, C1-C6 alkoxy and halogenated C1-C6 alkoxy;

preferably, the C1-C6 alkyl group is selected from methyl, ethyl, n-propyl, isopropyl, n-butyl and isobutyl, n-pentyl, isopentyl, n-hexyl, isohexyl, 3, 3-dimethylbutyl;

preferably, the C1-C6 alkoxy group is selected from methoxy, ethoxy, n-propoxy, isopropoxy, n-butoxy and isobutoxy, n-pentoxy, isopentoxy, n-hexoxy, isohexoxy, 3, 3-dimethylbutoxy;

preferably, the halogen is selected from fluorine, chlorine, bromine and iodine.

6. A process according to any one of claims 1 to 5, characterised in that the aminoimine metal complex is selected from one or more of the following complexes:

a complex of formula III wherein R¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Me，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Me，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Et，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Me，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Et，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Me，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Me，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂Me, M ═ Ni, Y ═ O, X ═ Br; a complex of formula III wherein R¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Et，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Et，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝i-Pr，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹-R³＝Me，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹-R³＝Me，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³Methyl, R²＝Br，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝R₃＝CH₃，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³Methyl, R²＝Br，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝F，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula IIIIn R¹＝R³＝Cl，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Br，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³Methyl, R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³Ethyl, R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³Is isopropyl, R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹-R³Methyl, R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³Methyl, R²＝Br，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹Methyl, R₃Is isopropyl, R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³＝F，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃Is isopropyl, R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³＝Cl，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃Is isopropyl, R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³＝Br，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃Is isopropyl, R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³Methyl, R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝CH₃，R¹¹Bromomethyl, R₃Is isopropyl, R₁₂Ethyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³＝Et，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝CH₃，R¹¹＝CH₂Br，R₃Is isopropyl, R₁₂Ethyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³Is isopropyl, R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝CH₃，R¹¹＝CH₂Br，R₃Ethyl, R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹-R³＝Me，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝CH₃，R¹¹＝CH₂Br，R₁₂Ethyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³＝Me，R²＝Br，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝Me，R₃＝Et，R¹¹＝CH₂Br，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝F，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝Me，R¹¹＝CH₂Br，R₃Not butyl, R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Cl，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝Me，R¹¹＝CH₂Br，R₃Not butyl, R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Br，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝Me，R¹¹＝CH₂Br，R₃Not butyl, R₁₂＝Et，M＝Ni，Y＝O，X＝Br。

7. The process according to any one of claims 1 to 6, wherein the olefin comprises an olefin having 2 to 16 carbon atoms, preferably the olefin comprises ethylene or an alpha-olefin having 3 to 16 carbon atoms, and/or the olefinic alcohol is selected from one or more olefinic alcohols of formula G:

in the formula G, L₁-L₃Each independently selected from H and C with or without substituent₁-C₃₀Alkyl radical, L₄Is C having a pendant group₁-C₃₀An alkylene group;

preferably, the copolymer has a content of structural units derived from the olefin alcohol represented by the formula G of 0.4 to 10.0 mol%;

preferably, L₁And L₂Is H, L₃Is H or C₁-C₃₀Alkyl radical, L₄Is C having a pendant group₁-C₃₀An alkylene group;

more preferably, L₁And L₂Is H, L₃Is H or C₁-C₂₀Alkyl radical, L₄Is C having a pendant group₁-C₂₀An alkylene group;

still more preferably, L₁And L₂Is H, L₃Is H or C₁-C₁₀Alkyl radical, L₄Is C having a pendant group₁-C₁₀An alkylene group;

further preferably, L₁And L₂Is H, L₃Is H or C₁-C₁₀Alkyl radical, L₄Is C having a pendant group₁-C₆An alkylene group.

8. The method of claim 7, wherein L is₁-L₃Wherein said substituents are selected from halogen, C₁-C₁₀Alkyl radical, C₁-C₁₀Alkoxy radical, C₆-C₁₀One or more of aryl, cyano and hydroxy; more preferably L₁-L₃Wherein the substituent is selected from one or more of C1-C6 alkyl, halogen and C1-C6 alkoxy;

the side group in L4 is selected from halogen and C₆-C₂₀Aryl radical, C₁-C₂₀Alkyl and C₁-C₂₀One or more of alkoxy, said C₆-C₂₀Aryl radical, C₁-C₂₀Alkyl and C₁-C₂₀Alkoxy is optionally substituted by a substituent, preferably selected from halogen, C₁-C₁₀Alkyl radical, C₁-C₁₀Alkoxy radical, C₆-C₁₀One or more of aryl and hydroxyl.

9. A process according to any one of claims 1 to 8, characterised in that the cocatalyst is selected from organoaluminium compounds and/or organoboron compounds; the organic aluminum compound is selected from one or more of alkyl aluminoxane, alkyl aluminum and alkyl aluminum halide; the organoboron compound is selected from an aryl boron and/or a borate; the chain transfer agent is selected from one or more of alkyl aluminum, alkyl magnesium and alkyl zinc; the improver comprises halogenated hydrocarbon, preferably C1-C15, the C1-C15 halogenated hydrocarbon is preferably C1-C10 halogenated hydrocarbon, and further preferably C1-C6 halogenated alkane;

preferably, when the cocatalyst is an organoaluminum compound, the molar ratio of aluminum in the cocatalyst to M in the diimine metal complex is (10-10)⁷):1, preferably (10-100000) 1, more preferably (100-; when the cocatalyst is an organic boron compound, the molar ratio of boron in the cocatalyst to M in the diimine metal complex is (0.1-1000):1, preferably (0.1-500): 1; the molar ratio of the chain transfer agent to M in the diimine metal complex is (0.1-5000) to 1, preferably (1.0-1000) to 1; the volume ratio of the solvent used for the polymerization to the improver is (1-5000):1, preferably (1.0-500): 1.

10. A hydroxyl group-containing olefin copolymer produced according to the method of any one of claims 1 to 9, which is spherical and/or spheroidal, and/or has a particle diameter of 0.1 to 50 mm.

11. Use of the hydroxyl group-containing olefin copolymer prepared according to the method of any one of claims 1 to 9 or the hydroxyl group-containing olefin copolymer of claim 10 as a polyolefin material.

Technical Field

The invention belongs to the field of preparation of high molecular polymers, and particularly relates to a method for preparing a hydroxyl-containing olefin copolymer, and a product and application thereof.

Background

The polyolefin product has low price, excellent performance and wide application range. Under the condition of keeping the original excellent physical and chemical properties of the polyolefin, polar groups are introduced into polyolefin molecular chains by a chemical synthesis method, so that the chemical inertness, the printing property, the wettability and the compatibility with other materials can be improved, and new characteristics which are not possessed by raw materials are endowed. High pressure free radical polymerization is currently used commercially to promote direct copolymerization of olefins with polar monomers, such as ethylene-vinyl acetate, ethylene-methyl methacrylate, and ethylene-acrylic acid copolymers. Although the polar comonomer can be directly introduced into the polyolefin chain by high-pressure radical copolymerization, the method requires high-temperature and high-pressure conditions, and is high in energy consumption and expensive in equipment cost.

Ethylene-vinyl alcohol (EVOH or EVAL) copolymer is a novel high molecular material integrating the processability of ethylene polymer and the gas barrier property of vinyl alcohol polymer, is one of three barrier resins industrially produced in the world at present, and is widely used for packaging food, medical solution and other products. Since vinyl alcohol cannot exist independently in the form of monomer, it is usually prepared by alcoholysis of ethylene-vinyl acetate copolymer by radical polymerization, but the alcoholysis process requires the use of a large amount of solvent, and the final saponification product contains a large amount of impurities such as acetic acid and alkali metal salt, and requires a large amount of water for washing.

CN103842389 discloses a method for producing a fluorinated olefin/vinyl alcohol copolymer, which comprises the following steps (1) and (2): a step (1) of obtaining a fluorine-containing olefin/vinyl ether copolymer by emulsion polymerization of a fluorine-containing olefin represented by the following formula (1) and a vinyl ether represented by the following formula (2) in the presence of an aqueous medium and an emulsifier, wherein the mass ratio of the vinyl ether represented by the formula (2) to the aqueous medium is 5/95 to 70/30; CF (compact flash)₂＝CFX¹(1)CH₂＝CHOR¹(2) In the formula (1), X¹Is a fluorine atom, a chlorine atom, a trifluoromethyl group or-OC_aF_2a+1A is an integer of 1-3; in the formula (2), R¹Is selected from C4-12 tertiary alkyl or alkoxyalkyl, C4-6 alicyclic hydrocarbon group containing etheric oxygen atom, C6-10 aryl and-Si (R)⁵)₃Group of (A), R⁵Is C1-C10 alkyl or aryl; a step (2) of subjecting R in a repeating unit based on a vinyl ether represented by the formula (2) in the fluoroolefin/vinyl ether copolymer to polymerization¹And a step of obtaining a fluorine-containing olefin/vinyl alcohol copolymer by substituting a hydrogen atom. The method enables to produce a high-molecular-weight fluoroolefin/vinyl alcohol copolymer having excellent thermal stability and capable of forming a tough film with high productivity.

As a preparation technology of polymers at normal temperature and normal pressure, coordination catalytic copolymerization has attracted extensive attention due to its remarkable effects in reducing energy consumption, improving reaction efficiency and the like. The catalyst participates in the reaction process, so that the activation energy of the copolymerization reaction of the olefin monomer and the polar monomer is greatly reduced, and the functional polymer with higher molecular weight can be obtained at lower temperature and pressure. Currently, only a few documents report the use of transition metal complexes to catalyze the copolymerization of olefins and unsaturated alcohols.

CN111116805A discloses a preparation method of an olefin-olefin alcohol copolymer, comprising: the copolymer is obtained by contacting an olefin and an olefin alcohol with a catalyst and optionally a chain transfer agent in the presence of an alkane solvent, wherein the catalyst used is a mononuclear metal complex. .

Disclosure of Invention

In a first aspect, the present invention provides a process for preparing a hydroxyl group-containing olefin copolymer comprising polymerizing an olefin and an olefin alcohol in the presence of a catalyst, an improver, and optionally a chain transfer agent, to produce the hydroxyl group-containing olefin copolymer,

wherein the catalyst comprises a main catalyst and an optional cocatalyst, the main catalyst comprises an amino imine metal complex shown as a formula I,

in the formula I, R₁And R₂The same or different, independently selected from C1-C30 hydrocarbyl containing or not containing substituent; r₃Selected from hydrogen and substituted or unsubstituted C1-C20 hydrocarbyl; r₅-R₈The same or different, each independently selected from hydrogen, halogen, hydroxyl, C1-C20 alkyl with or without substituent; r₅-R₈Optionally forming a ring with each other; r₁₂Selected from C1-C20 substituted or unsubstituted hydrocarbon groups; y is selected from non-metal atoms of group VIA; m is a group VIII metal; x is selected from halogen, C1-C10 alkyl with or without substituent and C1-C10 alkoxy with or without substituent.

According to some embodiments of the invention, R₁And R₂Selected from substituted or unsubstituted C1-C20 alkyl and/or substituted or unsubstituted C6-C20 aryl, preferably R₁And/or R₂Is a group of formula II:

in the formula II, R¹-R⁵The same or different, each is independently selected from hydrogen, halogen, hydroxyl, C1-C20 alkyl with or without substituent, C2-C20 alkenyl with or without substituent, C containing with or without substituentSubstituted or unsubstituted C2-C20 alkynyl, substituted or unsubstituted C3-C20 cycloalkyl, substituted or unsubstituted C1-C20 alkoxy, substituted or unsubstituted C2-C20 alkenyloxy, substituted or unsubstituted C2-C20 alkynyloxy, substituted or unsubstituted C3-C20 cycloalkoxy, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C7-C20 aralkyl, and substituted or unsubstituted C7-C20 alkaryl; r¹-R⁵Optionally forming a ring with each other.

Preferably, in formula II, R¹-R⁵The aryl group is selected from hydrogen, halogen, hydroxyl, C1-C10 alkyl with or without substituent, C2-C10 alkenyl with or without substituent, C2-C10 alkynyl with or without substituent, C3-C10 cycloalkyl with or without substituent, C1-C10 alkoxy with or without substituent, C2-C10 alkenyloxy with or without substituent, C2-C10 alkynyloxy with or without substituent, C3-C10 cycloalkoxy with or without substituent, C6-C15 aryl with or without substituent, C7-C15 aralkyl with or without substituent and C7-C15 alkaryl with or without substituent.

According to some embodiments of the invention, M is selected from nickel and palladium.

According to some embodiments of the invention, Y is selected from O and S.

According to some embodiments of the invention, X is selected from the group consisting of halogen, substituted or unsubstituted C1-C10 alkyl, and substituted or unsubstituted C1-C10 alkoxy, preferably from the group consisting of halogen, substituted or unsubstituted C1-C6 alkyl, and substituted or unsubstituted C1-C6 alkoxy.

According to some embodiments of the invention, R₁₂Is selected from C1-C20 alkyl with or without substituent, preferably C1-C10 alkyl with or without substituent, more preferably C1-C6 alkyl with or without substituent.

According to some embodiments of the invention, R₃Is selected from self-contained fetchingSubstituted or unsubstituted C1-C20 alkyl, substituted or unsubstituted C6-C20 aryl, substituted or unsubstituted C7-C20 aralkyl, and substituted or unsubstituted C7-C20 alkaryl.

According to some embodiments of the invention, R₃Selected from the group consisting of substituted or unsubstituted C1-C10 alkyl, substituted or unsubstituted C6-C10 aryl, substituted or unsubstituted C7-C15 aralkyl, and substituted or unsubstituted C7-C15 alkaryl, more preferably, R₃Is selected from C1-C6 alkyl with or without substituent, such as methyl, ethyl, propyl or butyl.

According to some embodiments of the invention, the aminoimine metal complex is represented by formula III:

in the formula III, R¹-R¹¹The aryl group is the same or different and is independently selected from hydrogen, halogen, hydroxyl, C1-C20 alkyl with or without substituent, C2-C20 alkenyl with or without substituent, C2-C20 alkynyl with or without substituent, C3-C20 cycloalkyl with or without substituent, C1-C20 alkoxy with or without substituent, C2-C20 alkenyloxy with or without substituent, C2-C20 alkynyloxy with or without substituent, C3-C20 cycloalkoxy with or without substituent, C6-C20 aryl with or without substituent, C7-C20 aralkyl with or without substituent and C7-C20 alkaryl with or without substituent;

R₃、R₁₂y, M and X have the same definitions as formula I.

According to some embodiments of the invention, R¹-R¹¹The same or different, each is independently selected from hydrogen, halogen, hydroxyl, C1-C10 alkyl with or without substituent, C2-C10 alkenyl with or without substituent, C2-C10 alkynyl with or without substituent, and C2-C10 alkynyl with or without substituentC3-C10 cycloalkyl containing substituent groups, C1-C10 alkoxy containing substituent groups or not, C2-C10 alkenyloxy containing substituent groups or not, C2-C10 alkynyloxy containing substituent groups or not, C3-C10 cycloalkoxy containing substituent groups or not, C6-C15 aryl containing substituent groups or not, C7-C15 aralkyl containing substituent groups or not, and C7-C15 alkaryl containing substituent groups or not.

According to some embodiments of the invention, R¹-R¹¹Each independently selected from hydrogen, C1-C10 alkyl, halogenated C1-C10 alkyl, C1-C10 alkoxy, halogenated C1-C10 alkoxy and halogen, more preferably from hydrogen, C1-C6 alkyl, halogenated C1-C6 alkyl, C1-C6 alkoxy, halogenated C1-C6 alkoxy and halogen.

According to some embodiments of the invention, the substituent is selected from the group consisting of halogen, hydroxy, C1-C10 alkyl, halogenated C1-C10 alkyl, C1-C10 alkoxy, and halogenated C1-C10 alkoxy; the substituents are preferably selected from halogen, hydroxy, C1-C6 alkyl, halogenated C1-C6 alkyl, C1-C6 alkoxy and halogenated C1-C6 alkoxy.

Exemplary C1-C6 alkyl groups in accordance with the present invention include, but are not limited to, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, n-pentyl, isopentyl, n-hexyl, isohexyl, 3, 3-dimethylbutyl.

Exemplary C1-C6 alkoxy groups according to the present invention are selected from methoxy, ethoxy, n-propoxy, isopropoxy, n-and isobutoxy, n-pentoxy, isopentoxy, n-hexoxy, isohexoxy, 3, 3-dimethylbutoxy.

Exemplary halogens according to the present invention are selected from fluorine, chlorine, bromine and iodine.

According to some embodiments of the present invention, exemplary aminoimine metal complexes include, but are not limited to:

a complex of formula III wherein R¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Me，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Me，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Et，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Me，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Et，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Me，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Me，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Me，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Et，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Et，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂Et, M ═ Ni, Y ═ O, X ═ Br; a complex of formula III wherein R¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂Et, M ═ Ni, Y ═ O, X ═ Br; a complex of formula III wherein R¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝i-Pr，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹-R³＝Me，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹-R³＝Me，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³Methyl, R²＝Br，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝R₃＝CH₃，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³Methyl, R²＝Br，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝F，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Cl，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Br，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³Methyl, R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝Et，R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³Ethyl, R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³Is isopropyl, R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹-R³Methyl, R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³Methyl, R²＝Br，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹Methyl, R₃Is isopropyl, R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³＝F，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃Is isopropyl, R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³＝Cl，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃Is isopropyl, R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³＝Br，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃Is isopropyl, R₁₂Isobutyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³Methyl, R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝CH₃，R¹¹Bromomethyl, R₃Is isopropyl, R₁₂Ethyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³＝Et，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝CH₃，R¹¹＝CH₂Br，R₃Is isopropyl, R₁₂Ethyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³Is isopropyl, R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝CH₃，R¹¹＝CH₂Br，R₃Ethyl, R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹-R³＝Me，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝CH₃，R¹¹＝CH₂Br，R₁₂Ethyl, M ═ Ni, Y ═ O, X ═ Br;

a complex of formula III wherein R¹＝R³＝Me，R²＝Br，R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝Me，R₃＝Et，R¹¹＝CH₂Br，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝F，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝Me，R¹¹＝CH₂Br，R₃Not butyl, R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Cl，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝Me，R¹¹＝CH₂Br，R₃Not butyl, R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

A complex of formula III wherein R¹＝R³＝Br，R²＝R⁴-R⁷＝R¹⁰＝H，R⁸＝R⁹＝Me，R¹¹＝CH₂Br，R₃Not butyl, R₁₂＝Et，M＝Ni，Y＝O，X＝Br。

According to some embodiments of the invention, the alkene alcohol is selected from one or more of the alkene alcohols represented by formula G:

in the formula G, L₁-L₃Each independently selected from H and C with or without substituent₁-C₃₀Alkyl radical, L₄Is C having a pendant group₁-C₃₀An alkylene group.

According to some embodiments of the invention, the copolymer has a content of structural units derived from the alkene alcohol represented by formula G of 0.4 to 10.0 mol%.

According to some embodiments of the invention, in formula G, L₁And L₂Is H.

According to some embodiments of the invention, in formula G, L₃Is H or C₁-C₃₀An alkyl group.

According to some embodiments of the invention, in formula G, L₄Is C having a pendant group₁-C₃₀An alkylene group.

According to some embodiments of the invention, in formula G, L₃Is H or C₁-C₂₀An alkyl group.

According to some embodiments of the invention, in formula G, L₄Is C having a pendant group₁-C₂₀An alkylene group.

According to some embodiments of the invention, in formula G, L₃Is H or C₁-C₁₀An alkyl group.

According to some embodiments of the invention, in formula G, L₄Is C having a pendant group₁-C₁₀An alkylene group.

According to some embodiments of the invention, in formula G, L₄Is C having a pendant group₁-C₆An alkylene group.

According to some embodiments of the invention, L₁-L₃Wherein said substituents are selected from halogen, C₁-C₁₀Alkyl radical, C₁-C₁₀Alkoxy radical, C₆-C₁₀One or more of aryl, cyano and hydroxyl.

According to some embodiments of the invention, L₁-L₃Wherein the substituent is selected from one or more of C1-C6 alkyl, halogen and C1-C6 alkoxy.

According to some embodiments of the invention, the pendant group in L4 is selected from halogen, C₆-C₂₀Aryl radical, C₁-C₂₀Alkyl and C₁-C₂₀One or more of alkoxy, said C₆-C₂₀Aryl radical, C₁-C₂₀Alkyl and C₁-C₂₀Alkoxy is optionally substituted by a substituent, preferably selected from halogen, C₁-C₁₀Alkyl radical, C₁-C₁₀Alkoxy radical, C₆-C₁₀One or more of aryl and hydroxyl.

According to a preferred embodiment of the invention, said L₄The side group in (A) is selected from halogen and C₆-C₂₀Aryl radical, C₁-C₂₀Alkyl, hydroxy substituted C₁-C₂₀Alkyl and alkoxy substituted C₁-C₂₀One or more of alkyl; preferably, the side group is selected from halogen, C₆-C₂₀Aryl radical, C₁-C₁₀Alkyl, hydroxy substituted C₁-C₁₀Alkyl and alkoxy substituted C_1-10One or more of alkyl; more preferably, the side group is selected from halogen, phenyl, C₁-C₆Alkyl and hydroxy substituted C₁-C₆One or more of alkyl, said C₁-C₆Alkyl groups include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, pentyl and hexyl.

According to a preferred embodiment of the invention, in formula G, L₁And L₂Is H, L₃Is H or C₁-C₃₀Alkyl radical, L₄Is C having a pendant group₁-C₃₀An alkylene group; said C is₁-C₃₀Alkyl is optionally substituted by a substituent, preferably selected from halogen, C₁-C₁₀Alkyl radical, C₁-C₁₀Alkoxy radical, C₆-C₁₀One or more of aryl, cyano and hydroxyl.

According to a preferred embodiment of the invention, in formula G, L₁And L₂Is H, L₃Is H, C₁-C₁₀Alkyl or halogen substituted C₁-C₁₀Alkyl, preferably L₃Is H or C₁-C₁₀An alkyl group; l is₄Is C having a pendant group₁-C₂₀Alkylene radicals, e.g. L₄Is methylene with side group, ethylene with side group, propylene with side group, butylene with side group, C with side group₅Alkylene, C having pendant groups₆Alkylene, C having pendant groups₇Alkylene, C having pendant groups₈Alkylene, C having pendant groups₉Alkylene, C having pendant groups₁₀Alkylene, C having pendant groups₁₂Alkylene, C having pendant groups₁₄Alkylene, C having pendant groups₁₈Alkylene, C having pendant groups₂₀Alkylene, preferably C, having pendant groups₁-C₁₀An alkylene group.

According to a preferred embodiment of the invention, in formula G, L₁And L₂Is H, L₃Is H or C_1-6An alkyl group; l is₄Is C having a pendant group₁-C₁₀An alkylene group.

In the present invention, the carbon number n of the Cn alkylene group means the number of C's in the linear chain, excluding the number of C's in the pendant group, and is, for example, isopropylidene (-CH)₂-CH(CH₃) -) is referred to herein as C with a pendant group (methyl)₂An alkylene group.

According to a preferred embodiment of the present invention, specific examples of the alkene alcohol represented by formula G include, but are not limited to: 2-methyl-3-buten-1-ol, 2-ethyl-3-buten-1-ol, 1-diphenyl-3-buten-1-ol, 2-methyl-3-buten-2-ol, 2-dimethyl-3-buten-1-ol, 3-methyl-1-penten-3-ol, 2, 4-dimethyl-4-penten-2-ol, 4-alkenyl-2-pentanol, 4-methyl-4-penten-2-ol, 2-phenyl-4-penten-2-ol, 2-methyl-3-buten-2-ol, 2-methyl-4-penten-2-ol, 2-methyl-3-buten-ol, 2-methyl-4-penten-2-ol, 2-methyl-4-penten-ol, 2-methyl-4-penten-2-ol, 2-methyl-penten-ol, 2-methyl-4-penten-2-ol, 2-methyl-penten-2-ol, and mixtures thereof, 2-allylhexafluoroisopropanol, 2-hydroxy-5-hexene, 3-buten-2-ol, 3-methyl-5-hexen-3-ol, 2-methyl-2-hydroxy-5-hexene, 1-allylcyclohexanol, 2, 3-dimethyl-2-hydroxy-5-hexene, 1-hepten-4-ol, 4-methyl-1-hepten-4-ol, 4-n-propyl-1-hepten-4-ol, 6-hepten-3-ol, 2-methyl-2-hydroxy-6-heptene, 5-methyl-2-hydroxy-6-heptene, 2-hydroxy-3-methyl-6-heptene, 2-hydroxy-3-ethyl-6-heptene, 2-hydroxy-4-methyl-6-heptene, 2-hydroxy-5-methyl-6-heptene, 2, 5-dimethyl-1-hepten-4-ol, 2, 6-dimethyl-7-octen-2-ol, 2-hydroxy-2, 4, 5-trimethyl-6-heptene, 2-methyl-3-hydroxy-7-octene, 3-methyl-3-hydroxy-6-heptene, 2-methyl-2-hydroxy-7-octene, 2-methyl-6-heptene, 2-hydroxy-6-heptene, 2-methyl-2-hydroxy-7-octene, 2-methyl-2-heptene, 2-methyl-2-1-heptene, 2-methyl-2-4-methyl-6-heptene, 2-methyl-4-heptene, 2-1-octene, 2-octene, 2-heptene, 2-octene, 2-one, 3-methyl-3-hydroxy-7-octene, 4-methyl-2-hydroxy-7-octene, 4-methyl-3-hydroxy-7-octene, 5-methyl-3-hydroxy-7-octene, 6-methyl-3-hydroxy-7-octene, 3-ethyl-3-hydroxy-7-octene, 1, 2-dihydroxy-7-octene, 2, 6-dimethyl-2, 6-dihydroxy-7-octene, 2, 6-dimethyl-2, 3-dihydroxy-7-octene, 2-methyl-2-hydroxy-3-chloro-7-octene, mixtures thereof, and mixtures thereof, 2-methyl-2-hydroxy-3, 5-dichloro-7-octene, 3, 4-dimethyl-4-hydroxy-8-nonene, 4-methyl-4-hydroxy-8-nonene, 4-ethyl-4-hydroxy-8-nonene, 4-propyl-4-hydroxy-8-nonene, 7-octen-2-ol, 3, 5-dichloro-2-methyl-7-octen-2-ol, 3-chloro-2-methyl-7-octen-2, 3-diol, and 2, 6-dimethyl-7-octen-2, 6-diol.

According to a preferred embodiment of the invention, the cocatalyst is chosen from organoaluminum compounds and/or organoboron compounds.

According to a preferred embodiment of the invention, the organoaluminium compound is selected from alkylaluminoxanes or compounds of general formula AlR_nX¹ _3-nWith an organoaluminum compound (alkylaluminum or alkylaluminum halide) of the general formula AlR_nX¹ _3-nWherein R is H, C₁-C₂₀Saturated or unsaturated hydrocarbon radicals or C₁-C₂₀Saturated or unsaturated hydrocarbyloxy radicals, preferably C₁-C₂₀Alkyl radical, C₁-C₂₀Alkoxy radical, C₇-C₂₀Aralkyl or C₆-C₂₀An aryl group; x¹Is halogen, preferably chlorine or bromine; 0<n is less than or equal to 3. Specific examples of the organoaluminum compound include, but are not limited to: trimethylaluminum, triethylaluminum, triisobutylaluminum, tri-n-hexylaluminum, trioctylaluminum, diethylaluminum monohydrogen, diisobutylaluminum monohydrogen, diethylaluminum monochloride, diisobutylaluminum monochloride, ethylaluminum sesquichloride, ethylaluminum dichloride, Methylaluminoxane (MAO) and Modified Methylaluminoxane (MMAO). Preferably, the organoaluminum compound is Methylaluminoxane (MAO).

According to a preferred embodiment of the invention, the organoboron compound is selected from an aryl boron and/or a borate. The arylborole is preferably a substituted or unsubstituted phenylborone, more preferably tris (pentafluorophenyl) boron. The borate is preferably N, N-dimethylanilinium tetrakis (pentafluorophenyl) borate and/or triphenylmethyl tetrakis (pentafluorophenyl) borate.

According to an embodiment of the invention, the modifier comprises a halogenated hydrocarbon.

According to the embodiment of the invention, the improver comprises halogenated hydrocarbon of C1-C15, the halogenated hydrocarbon of C1-C15 is preferably halogenated hydrocarbon of C1-C10, and is further preferably halogenated alkane of C1-C6.

According to a preferred embodiment of the invention, the halogenated hydrocarbon of C1 to C15 is methyl chloride, methylene chloride, chloroform, ethyl chloride, 1, 2-dichloroethane, 1,1, 2-trichloroethane, 1,1, 1-trichloroethane, 1,1,2, 2-tetrachloroethane, 1,1,1, 2-tetrachloroethane, pentachloroethane, hexachloroethane, 2-chloropropane, chloro-n-propane, 1, 3-dichloropropane, 1,1, 2-trichloropropane, 1,1,2,2,3, 3-hexachloropropane, 1,1,1,2,2,3, 3-heptachloropropane, 1-chlorobutane, chloro-tert-butane, 1, 4-dichlorobutane, 1, 2-dichloroisobutane, 1,1, 2-trichloro-2-methylpropane, 1,2,3, 4-tetrachlorobutane, 1-chloropentane, 2-chloro-2-methylbutane, 1-chloro-3-methylbutane, 1-chloro-2, 2-dimethylpropane, 1-chloro-2-methylbutane, 1, 5-dichloropentane, 2, 2-dimethyl-1, 3-dichloropropane, 1,1,1- (trichloromethyl) ethane, tetrachloro-pentanes.

According to a preferred embodiment of the present invention, the concentration of the main catalyst in the reaction system is 0.00001 to 100mmol/L, for example, 0.00001mmol/L, 0.00005mmol/L, 0.0001mmol/L, 0.0005mmol/L, 0.001mmol/L, 0.005mmol/L, 0.01mmol/L, 0.05mmol/L, 0.1mmol/L, 0.3mmol/L, 0.5mmol/L, 0.8mmol/L, 1mmol/L, 5mmol/L, 8mmol/L, 10mmol/L, 20mmol/L, 30mmol/L, 50mmol/L, 70mmol/L, 80mmol/L, 100mmol/L and any value therebetween, preferably 0.0001 to 1mmol/L, more preferably 0.001 to 0.5 mmol/L.

According to a preferred embodiment of the present invention, when the cocatalyst is an organoaluminum compound, the molar ratio of aluminum in the cocatalyst to M in the procatalyst is (10-10000000):1, for example, 10:1, 20:1, 50:1, 100:1, 200:1, 300:1, 500:1, 700:1, 800:1, 1000:1, 2000:1, 3000:1, 5000:1, 10000:1, 100000:1, 1000000:1, 10000000:1 and any value therebetween, preferably (10-100000):1, more preferably (100-10000): 1; when the cocatalyst is an organoboron compound, the molar ratio of boron in the cocatalyst to M in the procatalyst is (0.1-1000):1, e.g., 0.1:1, 0.2:1, 0.5:1, 0.8:1, 1:1, 1.2:1, 1.4:1, 1.6:1, 1.8:1, 2:1, 2.5:1, 3:1, 4:1, 5:1, 8:1, 10:1, 20:1, 50:1, 100:1, 200:1, 300:1, 500:1, 700:1, 800:1, 1000:1, and any value therebetween, preferably (0.1-500): 1.

According to a preferred embodiment of the invention, the olefin comprises an olefin having 2 to 16 carbon atoms, and in some embodiments of the invention, the olefin comprises ethylene or an alpha-olefin having 3 to 16 carbon atoms. In other embodiments of the present invention, the olefin is C₃-C₁₆A cyclic olefin, preferably a 5-or 6-membered ring. Preferably, the olefin is ethylene or an alpha-olefin having 3 to 16 carbon atoms, more preferably ethylene or C₂-C₁₀Alpha-olefins, such as ethylene, propylene, butene, pentene, hexene, heptene and octene.

According to a preferred embodiment of the present invention, the concentration of the olefin alcohol monomer represented by the formula G in the reaction system is 0.01 to 6000mmol/L, preferably 0.1 to 1000mmol/L, more preferably 1 to 500mmol/L, and may be, for example, 1mmol/L, 10mmol/L, 20mmol/L, 30mmol/L, 50mmol/L, 70mmol/L, 90mmol/L, 100mmol/L, 200mmol/L, 300mmol/L, 400mmol/L, 500mmol/L and any value therebetween.

According to a preferred embodiment of the present invention, the chain transfer agent is selected from one or more of aluminum alkyls, magnesium alkyls and zinc alkyls.

According to a preferred embodiment of the invention, the chain transfer agent is a trialkylaluminum and/or a dialkylzinc, preferably one or more selected from the group consisting of trimethylaluminum, triethylaluminum, triisopropylaluminum, triisobutylaluminum, tri-n-hexylaluminum, tri-n-octylaluminum, dimethylzinc and diethylzinc.

According to a preferred embodiment of the invention, the molar ratio of the chain transfer agent to M in the procatalyst is (0.1-2000: 1, e.g. 0.1:1, 0.2:1, 0.5:1, 1:1, 2:1, 3:1, 5:1, 8:1, 10:1, 20:1, 50:1, 100:1, 200:1, 300:1, 500:1, 600:1, 800:1, 1000:1, 2000:1 and any value in between, preferably (10-600: 1).

According to a preferred embodiment of the invention, the polymerization is carried out in an alkane solvent. The alkane solvent may be selected from C₃-C₂₀One or more alkanes, preferably selected from C₃-C₁₀The alkane, for example, may be selected from one or more of butane, isobutane, pentane, hexane, heptane, octane and cyclohexane, preferably one or more of hexane, heptane and cyclohexane.

According to a preferred embodiment of the invention, the volume ratio of solvent to modifier used for the polymerization is (1-5000):1, preferably (1.0-500): 1. For example, 1:1, 2:1, 5:1, 6:1, 7:1, 8:1, 9:1, 10:1, 15:1, 20:1, 50:1, 100:1, 200:1, 300:1, 500:1, 600:1, 800:1, 1000:1, 2000:1, and any value in between, preferably (1.0-500): 1.

According to a preferred embodiment of the present invention, the olefin alcohol is pre-treated with a dehydroactive hydrogen, preferably with a co-catalyst or chain transfer agent as described above, to remove hydroxyl active hydrogen from the olefin alcohol. Preferably, the molar ratio of hydroxyl groups in the alkene alcohol to co-catalyst or chain transfer agent during pretreatment is from 10:1 to 1: 10.

According to a preferred embodiment of the present invention, the reaction (i.e., polymerization) is carried out under anhydrous and oxygen-free conditions.

According to a preferred embodiment of the present invention, the conditions of the polymerization reaction include: the temperature of the reaction is-50 ℃ to 50 ℃, preferably-20 ℃ to 50 ℃, more preferably 0 ℃ to 50 ℃, and can be, for example, 0 ℃, 10 ℃, 20 ℃, 30 ℃, 40 ℃,50 ℃ and any value therebetween; and/or the reaction time is 10-200min, preferably 20-60 min. In the present invention, the reaction pressure is not particularly limited as long as the monomer can be subjected to coordination copolymerization. When the olefin is ethylene, the pressure of ethylene in the reactor is preferably 1 to 1000atm, more preferably 1 to 200atm, and still more preferably 1 to 50atm, from the viewpoint of cost reduction and simplification of the polymerization process.

In the present invention, the "reaction system" is meant to include the totality of solvent, olefin alcohol monomer, catalyst, modifier and optionally chain transfer agent.

The present invention also provides a hydroxyl group-containing olefin copolymer (i.e., olefin-olefin alcohol copolymer) comprising a spherical and/or spheroidal polymer, which is produced by the above-mentioned production method.

According to a preferred embodiment of the invention, the spherical and/or spheroidal polymers have an average particle size of 0.1 to 50.0mm, for example 0.1mm, 0.5mm, 1.0mm, 2.0mm, 3.0mm, 5.0mm, 8.0mm, 10.0mm, 15.0mm, 20.0mm, 25.0mm, 30.0mm, 35.0mm, 40.0mm, 45.0mm, 50.0mm and any value in between, preferably 0.5 to 20.0 mm.

According to a preferred embodiment of the present invention, in the hydroxyl group-containing olefin copolymer, the content of the structural unit derived from the olefin alcohol represented by the formula G is 0.4 to 30.0 mol%, and for example, may be 0.4 mol%, 0.5 mol%, 0.7 mol%, 0.8 mol%, 1.0 mol%, 1.5 mol%, 2.0 mol%, 5.0 mol%, 8.0 mol%, 10.0 mol%, 15.0 mol%, 20.0 mol%, 25.0 mol%, 30.0 mol% and any value therebetween, preferably 0.7 to 10.0 mol%.

According to a preferred embodiment of the present invention, the weight average molecular weight of the hydroxyl group-containing olefin copolymer is 30000-500000, preferably 50000-400000.

According to a preferred embodiment of the present invention, the hydroxyl group-containing olefin copolymer has a molecular weight distribution of 4.0 or less, and for example, may be 0.1, 0.5, 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0 and any value therebetween, and preferably, the molecular weight distribution is 1.0 to 4.0.

In the present invention, the particle size of a spherical or spheroidal polymer is herein considered to be equal to the diameter of a sphere having a volume equal to the volume of the particle.

According to still another aspect of the present invention, there is provided a use of the hydroxyl group-containing olefin copolymer as a polyolefin material.

The process for preparing hydroxyl group-containing olefin copolymers provided by the present invention uses a novel trinuclear metal complex-containing catalyst. The catalyst is not reported, therefore, the technical problem solved by the invention is to provide a novel preparation method of olefin copolymer containing hydroxyl. The method can directly obtain the polymer containing spherical and/or spheroidal, and the polymer has good appearance and good industrial application prospect.

Further, the method for preparing the hydroxyl group-containing olefin copolymer provided by the invention omits a step of saponification reaction and has a simpler preparation process compared with the existing industrial process for preparing the hydroxyl group-containing olefin copolymer.

Furthermore, the modifier introduced in the invention can effectively improve the balling effect of the polymer.

Detailed Description

The present invention will be described in detail with reference to examples, but the present invention is not limited to the examples.

The analytical characterization instrument used in the present invention was as follows:

¹HNMR nuclear magnetic resonance apparatus: bruker DMX 300(300MHz), Tetramethylsilicon (TMS) as internal standard, was used to test the structure of the complex ligands at 25 ℃.

Comonomer content of the polymer (content of structural units derived from the olefin alcohol represented by formula G): by using¹³C NMR spectroscopy was carried out by dissolving a polymer sample in 1,2, 4-trichlorobenzene at 120 ℃ on a 400MHz Bruker Avance 400 NMR spectrometer using a 10mm PASEX 13 probe.

Molecular weight and molecular weight distribution PDI (PDI ═ Mw/Mn) of the copolymer: measured at 150 ℃ using PL-GPC220 in trichlorobenzene (standard: PS, flow rate: 1.0mL/min, column: 3 XPlgel 10um M1 XED-B300X 7.5 nm).

The activity measurement method comprises the following steps: weight of polymer (g)/nickel (mol). times.2.

For the purpose of conciseness and clarity in the examples, the ligands and complexes are illustrated below:

a1 is an alpha-diimine compound of formula VI, wherein R is¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃；

A2 is an alpha-diimine compound of formula VI, wherein R is¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，

R⁸＝R⁹＝R¹¹＝CH₃；

Ligand L1 is an aminoimine compound of formula V, wherein R¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃；

Ligand L2 is an aminoimine compound of formula V, wherein R¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃；R₃＝CH₃；

Ligand L3 is an aminoimine compound of formula V, wherein R¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃；R₃＝Et；

The complex Ni1 is a complex shown as a formula III, wherein R¹＝R³＝Me，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃，R₃＝CH₃，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

The complex Ni2 is a complex shown as a formula III, wherein R¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃；R₃＝CH₃，R₁₂＝Et，M＝Ni，Y＝O，X＝Br；

The complex Ni3 is a complex shown as a formula III, wherein R¹＝R³＝iPr，R²＝R⁴＝R⁵＝R⁶＝R⁷＝R¹⁰＝H，R⁸＝R⁹＝R¹¹＝CH₃；R₃＝Et，R₁₂＝Et，M＝Ni，Y＝O，X＝Br。

Example 1

1) Preparation of ligand L1:

1.5ml of 2, 6-dimethylaniline (12mmol) was reacted with 57ml of 1M trimethylaluminum in toluene, after refluxing for 3h camphorquinone (1.05g, 5mmol) was added, the reaction was refluxed for 8 h, cooled, then quenched with sodium hydroxide/ice water, extracted with ethyl acetate, the organic phases were combined, dried over anhydrous magnesium sulfate and the product was chromatographed over a petroleum ether/ethyl acetate column to give ligand L1 as a colorless crystal in 70.2% yield.¹HNMRδ(ppm)7.00-6.89(m,6H,Ar-H),3.57(s,1H,NH),2.18(s,6H,CAr-CH₃),2.05(s,6H,CH₃),1.74(m,4H,CH₂),1.44(s,3H,CH₃),1.35(m,1H),1.21(s,3H,C H₃),1.01(s,3H,CH₃),0.87(s,3H,CH₃).

2) Preparation of complex Ni 1:10 ml of (DME) NiBr₂(277mg,0.9mmol) in ethanol (10mL) was added dropwise to a solution of ligand L1(233mg,0.6mmol) in dichloromethane (10mL) at room temperature for 6 hours, and the precipitate was precipitated, filtered, washed with ether and dried to give a yellow powder solid in 70% yield. Elemental analysis (C)₅₈H₈₂Br₆N₄Ni₃O₂): c, 45.75; h, 5.43; n, 3.68; experimental values (%): c, 45.56; h, 5.83; and N, 3.46.

3) Continuously drying a 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 deg.C for 6h, vacuumizing while hot, and adding N₂Replace qi for 3 times. 500mL of hexane was poured into the polymerization system, and 7.6mg of hexane was added simultaneously(5. mu. mol) Complex Ni1, 10mL of dichloromethane, 30mmol (5.1mL) of 2-methyl-2-hydroxy-7-octene, 30mL of AlEt₃(1.0mol/L hexane solution), 6.5mL of Methylaluminoxane (MAO) (1.53mol/L toluene solution), and the reaction was stirred at 30 ℃ under an ethylene pressure of 10atm for 30 min. Finally, the polymer was obtained by neutralizing the mixture with a 10 wt% ethanol solution acidified with hydrochloric acid. The polymerization activity and the polymer performance parameters are shown in Table 1.

Example 2

Continuously drying a 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 deg.C for 6h, vacuumizing while hot, and adding N₂Replace qi for 3 times. To the polymerization system was charged 500mL of hexane, while adding 7.6mg (5. mu. mol) of complex Ni1, 50mL of dichloromethane, 30mmol (5.1mL) of 2-methyl-2-hydroxy-7-octene, 30mL of AlEt₃(1.0mol/L hexane solution), 6.5mL of MAO (1.53mol/L toluene solution), and the reaction mixture was stirred at 30 ℃ under an ethylene pressure of 10atm for 30 min. Finally, the polymer was obtained by neutralizing the mixture with a 10 wt% ethanol solution acidified with hydrochloric acid. The polymerization activity and the polymer performance parameters are shown in Table 1.

Example 3

Continuously drying a 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 deg.C for 6h, vacuumizing while hot, and adding N₂Replace qi for 3 times. To the polymerization system was charged 500mL of hexane while adding 7.6mg (5. mu. mol) of complex Ni1, 100mL of dichloromethane, 30mmol (5.1mL) of 2-methyl-2-hydroxy-7-octene, 30mL of AlEt₃(1.0mol/L hexane solution), 6.5mL MAO (1.53mol/L toluene solution), and the reaction was stirred at 60 ℃ under 10atm of ethylene pressure for 30 min. Finally, the polymer was obtained by neutralizing the mixture with a 10 wt% ethanol solution acidified with hydrochloric acid. The polymerization activity and the polymer performance parameters are shown in Table 1.

Example 4

Continuously drying a 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 deg.C for 6h, vacuumizing while hot, and adding N₂Replace qi for 3 times. To the polymerization system was charged 500mL of hexane while adding 7.6mg (5. mu. mol) of complex Ni1, 200mL of dichloromethane, 30mmol (5.1mL) of 2-methyl-2-hydroxy-7-octene, 30mL of AlEt₃(1.0mol/L in hexane), 6.5mL of MAO (1.53mol/L in toluene) inThe reaction was carried out at 30 ℃ under an ethylene pressure of 10atm with stirring for 30 min. Finally, the polymer was obtained by neutralizing the mixture with a 10 wt% ethanol solution acidified with hydrochloric acid. The polymerization activity and the polymer performance parameters are shown in Table 1.

Example 5

Continuously drying a 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 deg.C for 6h, vacuumizing while hot, and adding N₂Replace qi for 3 times. To the polymerization system was charged 500mL of hexane, while adding 7.6mg (5. mu. mol) of complex Ni1, 50mL of dichloromethane, 30mmol (5.1mL) of 2-methyl-2-hydroxy-7-octene, 30mL of AlEt₃(1.0mol/L hexane solution), 1.0mL diethyl zinc (1mol/L hexane solution), 6.5mL MAO (1.53mol/L toluene solution), and the reaction was stirred at 30 ℃ for 30min while maintaining an ethylene pressure of 10 atm. Finally, the polymer was obtained by neutralizing the mixture with a 10 wt% ethanol solution acidified with hydrochloric acid. The polymerization activity and the polymer performance parameters are shown in Table 1.

Example 6

Continuously drying a 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 deg.C for 6h, vacuumizing while hot, and adding N₂Replace qi for 3 times. To the polymerization system was charged 500mL of hexane while adding 7.6mg (5. mu. mol) of complex Ni1, 50mL of 1, 2-dichloroethane, 30mmol (5.1mL) of 2-methyl-2-hydroxy-7-octene, 30mL of AlEt₃(1.0mol/L hexane solution), 6.5mL of MAO (1.53mol/L toluene solution), and the reaction mixture was stirred at 30 ℃ under an ethylene pressure of 10atm for 30 min. Finally, the polymer was obtained by neutralizing the mixture with a 10 wt% ethanol solution acidified with hydrochloric acid. The polymerization activity and the polymer performance parameters are shown in Table 1.

Example 7

Continuously drying a 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 deg.C for 6h, vacuumizing while hot, and adding N₂Replace qi for 3 times. To the polymerization system was charged 500mL of hexane while adding 7.6mg (5. mu. mol) of complex Ni1, 50mL of dichloromethane, 50mmol (8.5mL) of 2-methyl-2-hydroxy-7-octene, 50mL of AlEt₃(1.0mol/L hexane solution), 6.5mL of MAO (1.53mol/L toluene solution), and the reaction mixture was stirred at 30 ℃ under an ethylene pressure of 10atm for 30 min. Finally, the polymer was obtained by neutralizing the mixture with a 10 wt% ethanol solution acidified with hydrochloric acid. Polymerization activity ofAnd the polymer performance parameters are shown in table 1.

Example 8

1) Preparation of ligand L2:

alpha-diimine compound A23.88g (8mmol), sequentially adding 30ml of toluene and 1M trimethylaluminum (16ml and 16mmol), refluxing for 8 hours, stopping the reaction by using sodium hydroxide/ice water, extracting with ethyl acetate, combining organic phases, drying by using anhydrous magnesium sulfate, and carrying out column chromatography on the product by using petroleum ether/ethyl acetate to obtain colorless crystal ligand L2, wherein the yield is 84.2%.¹HNMRδ(ppm)7.19-7.06(m,6H,Ar-H),3.42(s,1H,NH),2.98(m,2H,CH(CH₃)₂),2.88(m,2H,CH(CH₃)₂),2.32(m,1H),1.81(m,4H,CH₂),1.50(s,3H,CH₃),1.21(m,24H,CH₃),0.92(s,3H,CH₃),0.75(s,3H,CH₃),0.72(s,3H,CH₃).

2) Preparation of complex Ni 2: 10ml of (DME) NiBr₂(277mg,0.9mmol) in ethanol (10mL) was added dropwise to a solution of ligand L2(300mg,0.6mmol) in dichloromethane (10mL) at room temperature for 6 hours, and the precipitate was precipitated, filtered, washed with ether and dried to give a red powder solid in 78% yield. Elemental analysis (C)₇₄H₁₁₄Br₆N₄Ni₃O₂): c, 50.87; h, 6.58; n, 3.21; experimental values (%): c, 50.57; h, 6.73; and N, 3.04.

3) Continuously drying a 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 deg.C for 6h, vacuumizing while hot, and adding N₂Replace qi for 3 times. To the polymerization system was charged 500mL of hexane, while adding 8.7mg (5. mu. mol) of complex Ni2, 50mL of dichloromethane, 30mmol (5.1mL) of 2-methyl-2-hydroxy-7-octene, 30mL of AlEt₃(1.0mol/L hexane solution), 6.5 mM AO (1.53mol/L toluene solution), and the reaction mixture was stirred at 30 ℃ under an ethylene pressure of 10atm for 30 min. Finally, the polymer was obtained by neutralizing the mixture with a 10 wt% ethanol solution acidified with hydrochloric acid. The polymerization activity and the polymer performance parameters are shown in Table 1.

Example 9

1) Preparation of ligand L3:

alpha-diimine Compound A23.88g (8mmol), followed by30ml of diethyl ether and 2M diethyl zinc (4ml, 8mmol) are added and stirred at normal temperature for 3 hours, the reaction is stopped by ice water, ethyl acetate is extracted, organic phases are combined, anhydrous magnesium sulfate is dried, and a product is subjected to chromatographic separation by a petroleum ether/ethyl acetate column layer to obtain a colorless crystal ligand L3 with the yield of 52.1 percent.¹HNMRδ(ppm)7.17-7.06(m,6H,Ar-H),4.44(s,1H,NH),2.98(m,2H,CH(CH₃)₂),2.87(m,2H,CH(CH₃)₂),2.33(m,1H),1.86(m,2H,CH₂),1.81(m,4H,CH₂),1.21(m,24H,CH₃),1.08(t,3H,CH₃),0.93(s,3H,CH₃),0.75(s,3H,CH₃),0.72(s,3H,CH₃).

2) Preparation of complex Ni 3: 10ml of (DME) NiBr₂(277mg,0.9mmol) in ethanol (10mL) was added dropwise to a solution of ligand L3(309mg,0.6mmol) in dichloromethane (10mL) at room temperature and stirred for 6 hours to precipitate, which was filtered, washed with ether and dried to give a red powder solid in a yield of 72%. Elemental analysis (C)₇₆H₁₁₈Br₆N₄Ni₃O₂): c, 51.42; h, 6.70; n, 3.16; experimental values (%): c, 51.29; h, 6.98; and N, 3.04.

3) Continuously drying a 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 deg.C for 6h, vacuumizing while hot, and adding N₂Replace qi for 3 times. To the polymerization system was charged 500mL of hexane, while adding 8.9mg (5. mu. mol) of complex Ni3, 50mL of dichloromethane, 30mmol (5.1mL) of 2-methyl-2-hydroxy-7-octene, 30mL of AlEt₃(1.0mol/L hexane solution), 6.5 mM AO (1.53mol/L toluene solution), and the reaction mixture was stirred at 30 ℃ under an ethylene pressure of 10atm for 30 min. Finally, the polymer was obtained by neutralizing the mixture with a 10 wt% ethanol solution acidified with hydrochloric acid. The polymerization activity and the polymer performance parameters are shown in Table 1.

Example 10

Continuously drying a 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 deg.C for 6h, vacuumizing while hot, and adding N₂Replace qi for 3 times. To the polymerization system was charged 500mL of hexane, while adding 7.6mg (5. mu. mol) of complex Ni1, 50mL of dichloromethane, 30mmol (5.1mL) of 2-methyl-2-hydroxy-7-octene, 30mL of AlEt₃(1.0mol/L hexane solution), 15mL of N was added,a solution of N-dimethylanilinium tetrakis (pentafluorophenyl) borate in methylene chloride (1mmol/L in methylene chloride) was stirred at 30 ℃ under 10atm of ethylene pressure for 30 min. Finally, the polymer was obtained by neutralizing the mixture with a 10 wt% ethanol solution acidified with hydrochloric acid. The polymerization activity and the polymer performance parameters are shown in Table 1.

Example 11

Continuously drying a 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 deg.C for 6h, vacuumizing while hot, and adding N₂Replace qi for 3 times. 500mL of hexane was poured into the polymerization system, and 7.6mg (5. mu. mol) of complex Ni1, 30mmol (5.1mL) of 2-methyl-2-hydroxy-7-octene, 30mL of AlEt₃(1.0mol/L hexane solution), 6.5mL of MAO (1.53mol/L toluene solution), and the reaction mixture was stirred at 30 ℃ under an ethylene pressure of 10atm for 30 min. Finally, the polymer was obtained by neutralizing the mixture with a 10 wt% ethanol solution acidified with hydrochloric acid. The polymerization activity and the polymer performance parameters are shown in Table 1.

TABLE 1

As can be seen from Table 1, when the modifier is added, the catalyst of the present invention catalyzes the copolymerization of ethylene and enol, the polymerization activity is high, and the content of spherical polymers in the obtained polymer is increased. The molecular weight of the polymer can be controlled within a wide range according to the addition of the chain transfer agent. In addition, more copolymerization products with good particle morphology can be prepared by regulating and controlling polymerization conditions.

It should be noted that the above-mentioned embodiments are only for explaining the present invention, and do not set any limit to the present invention. The present invention has been described with reference to exemplary embodiments, but the words which have been used herein are words of description and illustration, rather than words of limitation. The invention can be modified, as prescribed, within the scope of the claims and without departing from the scope and spirit of the invention. Although the invention has been described herein with reference to particular means, materials and embodiments, the invention is not intended to be limited to the particulars disclosed herein, but rather extends to all other methods and applications having the same functionality.