阅读说明：本技术 生产聚烯烃离聚物的方法以及由此产生的离聚物 (Method for producing polyolefin ionomers and ionomers produced thereby ) 是由 H·马丁内斯 M·A·希尔迈尔 J·C·芒罗 K·L·沃尔顿 M·M·休斯 于 2014-12-15 设计创作，主要内容包括：本发明提供一种生产离聚物的方法,其包含在双官能链转移剂存在下,在开环复分解聚合条件下,使烷基-顺-环辛烯和顺-环辛烯以1:0至0:1的摩尔比反应以形成不饱和聚烯烃反应性远螯预聚物；氢化所述不饱和聚烯烃反应性远螯预聚物以产生氢化的聚烯烃反应性远螯预聚物；使所述氢化的聚烯烃反应性远螯预聚物与根据式aM<Sup>x</Sup>+b(R)<Sup>y</Sup>的至少一种化合物反应以形成离聚物,其中M为金属,x为M的电荷,R为烷基、芳基、氧化物或脂肪酸,y为R的电荷,a和b为至少1的整数,并且ax+by＝0。本发明进一步提供由此产生的离聚物。(The present invention provides a process for producing an ionomer comprising reacting alkyl-cis-cyclooctene and cis-cyclooctene in a molar ratio of 1:0 to 0:1 in the presence of a difunctional chain transfer agent under ring-opening metathesis polymerization conditions to form an unsaturated polyolefin reactive telechelic prepolymer; hydrogenating the unsaturated polyolefin reactive telechelic pre-polymer to produce a hydrogenated polyolefin reactive telechelic pre-polymer; reacting the hydrogenated polyolefin reactive telechelic pre-polymer with a polymer according to formula aM x +b(R) y Wherein M is a metal, x is the charge of M, R is an alkyl, aryl, oxide or fatty acid, y is the charge of R, a and b are integers of at least 1, and ax + by is 0. The invention further provides the ionomers thus produced.)

1. A method of producing an ionomer comprising:

reacting alkyl-cis-cyclooctene and cis-cyclooctene in a molar ratio of 1:0 to 0:1 in the presence of a difunctional acid chain transfer agent under ring opening metathesis polymerization conditions to form an unsaturated polyolefin reactive telechelic pre-polymer;

hydrogenating the unsaturated polyolefin reactive telechelic pre-polymer to produce a hydrogenated polyolefin reactive telechelic pre-polymer;

reacting the hydrogenated polyolefin reactive telechelic pre-polymer with a polymer according to formula aM^x+b(R)^yWherein M is a metal, x is the charge of M, R is an alkyl, aryl, oxide or fatty acid, y is the charge of R, a and b are integers of at least 1, and ax + by is 0.

2. The process of claim 1, wherein the alkyl-cis-cyclooctene is 3-hexyl-cis-cyclooctene.

3. The method of claim 1, wherein the chain transfer agent is selected from the group consisting of maleic acid and dicarboxylic acid.

4. The process of claim 1, wherein cis-cyclooctene is present in the reacting step and the molar ratio of cis-cyclooctene to alkyl-cis-cyclooctene is from 1:0.05 to 0.05: 1.

5. The process of claim 1, wherein the reaction occurs in the presence of a Grubbs catalyst and/or any catalyst suitable for ROMP.

6. The process of claim 1, wherein the hydrogenation is a catalytic hydrogenation at a temperature between 50 ℃ and 80 ℃ and a pressure of 350 to 500psi, wherein the catalyst is a silica supported platinum catalyst.

7. The process of claim 6, wherein the hydrogenation is a chemical hydrogenation.

8. An ionomer produced according to the method of any one of the preceding claims.

Technical Field

The present invention relates to a process for producing polyolefin ionomers and ionomers produced thereby.

Background

Polyolefins are useful materials as high molar mass polymers. The high chemical and oxidation resistance of saturated polyolefin materials coupled with competitive prices makes polyolefins highly desirable for the plastics industry. Controlled inclusion of functional groups on polyolefins has been shown to result in enhanced properties. However, despite the large number of materials and applications derived from polyolefins, prepolymers thereof for forming ionically associated polyolefins are in an unexplored area. This is primarily because precise and controlled functionalization has been challenging. Most processes for incorporating reactive groups into polyolefins involve post-polymerization reactions, which generally have poor control over the location and amount of functionalization and result in diminished mechanical properties. The synthesis of polyolefin reactive telechelic prepolymers that are moldable, injectable, and otherwise processable, which form polyolefin ionic associations, will provide the desired combination of low viscosity and good tensile properties.

Disclosure of Invention

The present invention is a process for producing polyolefin ionomers and ionomers produced thereby.

In one embodiment, the present invention provides a process for producing an ionomer comprising reacting alkyl-cis-cyclooctene and cis-cyclooctene in a molar ratio of 0:1 to 1:0 in the presence of a difunctional acidic chain transfer agent under ring opening metathesis polymerization conditions to form an unsaturated polyolefin reactive dicarboxylic acid telechelic prepolymer; hydrogenated unsaturated polyolefin reactive bisCarboxylic acid telechelic pre-polymer to produce a hydrogenated polyolefin reactive dicarboxy telechelic pre-polymer; reacting a hydrogenated polyolefin reactive telechelic pre-polymer with a polymer according to formula aM^x+b(R)^yWherein M is a metal, x is the charge of M, R is an alkyl, aryl, oxide or fatty acid, y is the charge of R, a and b are integers of at least 1, and ax + by is 0.

The invention comprises the following steps:

1. a method of producing an ionomer comprising:

reacting alkyl-cis-cyclooctene and cis-cyclooctene in a molar ratio of 1:0 to 0:1 in the presence of a difunctional acid chain transfer agent under ring opening metathesis polymerization conditions to form an unsaturated polyolefin reactive telechelic pre-polymer;

hydrogenating the unsaturated polyolefin reactive telechelic pre-polymer to produce a hydrogenated polyolefin reactive telechelic pre-polymer;

reacting the hydrogenated polyolefin reactive telechelic pre-polymer with a polymer according to formula aM^x+b(R)^yWherein M is a metal, x is the charge of M, R is an alkyl, aryl, oxide or fatty acid, y is the charge of R, a and b are integers of at least 1, and ax + by is 0.

2. The process of item 1, wherein the alkyl-cis-cyclooctene is 3-hexyl-cis-cyclooctene.

3. The method of item 1, wherein the chain transfer agent is selected from the group consisting of maleic acid and dicarboxylic acid.

4. The process of item 1, wherein cis-cyclooctene is present in the reacting step and the molar ratio of cis-cyclooctene to alkyl-cis-cyclooctene is from 1:0.05 to 0.05: 1.

5. The process of item 1, wherein the reaction occurs in the presence of a Grubbs catalyst and/or any catalyst suitable for ROMP.

6. The process of item 1, wherein the hydrogenation is a catalytic hydrogenation at a temperature between 50 ℃ and 80 ℃ and a pressure of 350 to 500psi, wherein the catalyst is a silica supported platinum catalyst.

7. The process of item 6, wherein the hydrogenation is a chemical hydrogenation.

8. An ionomer produced according to the method of any one of the preceding claims.

Drawings

For the purpose of illustrating the invention, there is shown in the drawings, by way of illustration; it should be understood, however, that the invention is not limited to the precise arrangements and instrumentalities shown.

FIG. 1 is a graph showing DMTA of hydrogenated prepolymer 1, taken in a 25mm parallel plate geometry; temperature gradient of 0.5 ℃ min^-1；ω＝6.28rad s^-1And γ is 0.05%;

FIG. 2 is a graph showing DMTA of hydrogenated prepolymer 2, taken in a 25mm parallel plate geometry; temperature gradient of 5 ℃ for min^-1；ω＝6.28rad s^-1And γ is 0.05%;

FIG. 3 is a graph showing DMTA of hydrogenated prepolymer 3, taken in a 25mm parallel plate geometry; temperature gradient of 5 ℃ for min^-1；ω＝6.28rad s^-1And γ is 0.05%;

FIG. 4 is a graph showing DMTA of example 1 of the present invention, taken with a 25mm parallel plate geometry; temperature gradient of 0.5 ℃ min^-1；ω＝6.28rad s^-1And γ is 0.05%;

FIG. 5 is a graph showing DMTA of example 2 of the present invention, taken with an 8mm parallel plate geometry; temperature gradient of 5 ℃ for min^-1；ω＝6.28rad s^-1And γ is 0.05%;

FIG. 6 is a graph showing DMTA of example 3 of the present invention, taken with an 8mm parallel plate geometry; temperature gradient of 5 ℃ for min^-1；ω＝6.28rad s^-1And γ is 0.05%;

FIG. 7 is a graph showing DMTA of example 4 of the present invention, taken with a 25mm parallel plate geometry; temperature gradient of 5 ℃ for min^-1；ω＝6.28rad s^-1And γ is 0.05%; and

FIG. 8 is a graph showing DMTA of example 5 of the present invention, taken with a 25mm parallel plate geometry; temperature ofGradient degree of 5 deg.C min^-1；ω＝6.28rad s^-1And γ is 0.05%.

Detailed Description

The present invention is a process for producing polyolefin ionomers and ionomers produced thereby.

The process for producing a polyolefin difunctional acid-reactive telechelic prepolymer according to the present invention comprises reacting alkyl-cis-cyclooctene and cis-cyclooctene in a molar ratio of from 0:1 to 1:0 in the presence of a difunctional acid chain transfer agent under ring opening metathesis polymerization conditions to form an unsaturated polyolefin reactive dicarboxylic acid telechelic prepolymer; hydrogenating the unsaturated polyolefin reactive dicarboxylic telechelic pre-polymer to produce a hydrogenated polyolefin reactive dicarboxylic telechelic pre-polymer; reacting a hydrogenated polyolefin reactive telechelic pre-polymer with a polymer according to formula aM^x+b(R)^yWherein M is a metal, x is the charge of M, R is an alkyl, aryl, oxide or fatty acid, y is the charge of R, a and b are integers of at least 1, and ax + by is 0.

In an alternative embodiment, the instant invention further provides an ionomer produced according to any embodiment of the inventive process disclosed herein.

Alkyl-cis-cyclooctenes useful in embodiments of the present invention are known in the art. Exemplary alkyl-cis-cyclooctenes include 3-substituted-cis-cyclooctenes, such as 3-methyl-cis-cyclooctene, 3-ethyl-cis-cyclooctene, 3-hexyl-cis-cyclooctene, and 3-phenyl-cis-cyclooctene.

Any difunctional acidic chain transfer agent known in the art may be used in embodiments of the present invention. Difunctional chain transfer agents include, for example, maleic acid, dicarboxylic acids, and mixtures thereof.

Ring-Opening Metathesis Polymerization (ROMP) conditions are known in the art and are described, for example, in Regio-Ring-Opening Metathesis Polymerization and stereoselective Ring-Opening Metathesis Polymerization of 3-substituted cyclooctenes, Shingo Kobayashi et al, J.Am.chem.Soc., 2011, 133, 5794 and useMaleic Acid as a Chain Transfer Agent was passed through carboxyl-Telechelic Polyolefins of ROMP (carboxyl-Telechelic Polyolefins by ROMP Using Maleic Acid as a Chain Transfer Agent), pit and hillmy, Macromolecules 2011, 44, 2378-. A variety of catalysts are known for ROMP, including simple metal-based compounds such as RuCl₃Alcohol mixtures and more complex Grubbs catalysts, including first and second generation Grubbs catalysts and Hoveyda-Grubbs catalysts. The first generation Grubbs catalysts are transition metal carbene complexes having the general formula:

the second generation Grubbs catalysts have the general formula:

the Hoyveda-Grubbs catalyst has the general formula:

one skilled in the art will appreciate that any catalyst suitable for ROMP may be used. The present invention is not limited by the foregoing catalyst structure or by the use of ruthenium as the metal for such catalysts.

The process for producing polyolefin ionomers utilizes a 1:0 to 0:1 molar ratio of cis-cyclooctene to alkyl-cis-cyclooctene. All individual values and subranges from 1:0 to 0:1 are included herein and disclosed herein. For example, the molar ratio of cis-cyclooctene to alkyl-cis-cyclooctene may be in the range of 1:0 to 0:1, or in the alternative, the molar ratio of cis-cyclooctene to alkyl-cis-cyclooctene may be in the range of 1:0.75 to 0.75:1, or in the alternative, the molar ratio of cis-cyclooctene to alkyl-cis-cyclooctene may be in the range of 1:0.5 to 0.5:1, or in the alternative, the molar ratio of cis-cyclooctene to alkyl-cis-cyclooctene may be in the range of 1:0.25 to 0.25: 1.

In an alternative embodiment, the instant invention provides a process for producing a polyolefin ionomer, and the ionomer produced thereby, in accordance with any embodiment disclosed herein, except that the unsaturated and/or hydrogenated polyolefin reactive telechelic pre-polymer has a molar mass of from 1 to 20 kg/mol. All individual values and subranges from 1 to 20kg/mol are included herein and disclosed herein; for example, the unsaturated polyolefin reactive telechelic pre-polymer may have a molar mass from a lower limit of 1, 3, 6, 9, 12, 15, or 18kg/mol to an upper limit of 2, 5,8, 11, 14, 17, or 20 kg/mol.

In an alternative embodiment, the instant invention provides a process for producing a polyolefin ionomer, and the ionomer produced thereby, in accordance with any of the embodiments disclosed herein, except that the unsaturated and/or hydrogenated polyolefin reactive telechelic pre-polymer exhibits one or more of the following characteristics: (a) a decomposition temperature T of 310 ℃ or higher_d(ii) a And (b) a glass transition temperature Tg of equal to or less than-25 ℃.

Exhibiting a T equal to or greater than 310 ℃ for reactive telechelic prepolymers of polyolefins in which the unsaturation and/or hydrogenation is present_dAll individual values and subranges from 310 ℃ or more are included herein and disclosed herein. For example, T_dThe lower limit may be 310 ℃ or, in the alternative, T_dThe lower limit may be 320 ℃ or, in the alternative, T_dThe lower limit may be 330 ℃ or, in the alternative, T_dThe lower limit may be 340 ℃ or, in the alternative, T_dThe lower limit may be 350 ℃.

Wherein the unsaturated and/or hydrogenated polyolefin reactive telechelic pre-polymer exhibits a glass transition temperature, Tg, equal to or less than-25 ℃, all individual values and subranges are included herein and disclosed herein. For example, the upper Tg limit may be-25 deg.C, or in the alternative, the upper Tg limit may be-30 deg.C, or in the alternative, the upper Tg limit may be-35 deg.C, or in the alternative, the upper Tg limit may be-40 deg.C. In an alternative embodiment, the unsaturated and/or hydrogenated polyolefin reactive telechelic pre-polymer exhibits a glass transition temperature greater than or equal to-250 ℃. All individual values and subranges from greater than or equal to-250 ℃ are included herein and disclosed herein. For example, the Tg may be within a lower limit of-250 ℃, or in the alternative, may be within a lower limit of-200 ℃, or in the alternative, may be within a lower limit of-150 ℃, or in the alternative, may be within a lower limit of-100 ℃.

In an alternative embodiment, the unsaturated polyolefin reactive telechelic pre-polymer exhibits less than 60J g^-1Δ H of_m(2 nd heat). Less than 60J g for telechelic prepolymers reactive with polyolefins in which the unsaturated polyolefin is present^-1Δ H of_m(Heat 2) embodiment, less than 60J g^-1All individual values and subranges of (a) are included herein and disclosed herein. For example, Δ H_mCan be less than 60J g^-1Or in the alternative,. DELTA.H_mCan be less than 51J g^-1Or in the alternative,. DELTA.H_mMay be less than 46J g^-1Or in the alternative,. DELTA.H_mMay be less than 41J g^-1。

In an alternative embodiment, the hydrogenated polyolefin reactive telechelic pre-polymer exhibits a weight equal to or less than 277J g^-1Δ H of_m(2 nd heat). Exhibits a telechelic reactive prepolymer equivalent to or less than 277J g for polyolefins in which the hydrogenation is carried out^-1Δ H of_m(2 nd heat) embodiment, 277J g or less^-1All individual values and subranges of (a) are included herein and disclosed herein. For example, Δ H_mMay equal 277J g^-1Or in the alternative,. DELTA.H_mMay be less than 277J g^-1Or in the alternative,. DELTA.H_mMay be less than 200J g^-1Or in the alternative,. DELTA.H_mCan be less than 150J g^-1Or in the alternative Δ H_mMay be less than 100J g^-1. In an alternative embodiment, the hydrogenated polyolefin reactive telechelic pre-polymer exhibits greater than or equal to 0J g^-1Δ H of_mOr in the alternative greater than or equal to 10J g^-1Δ H of_mOr, in the alternative, greater than or equal to 20J g^-1Δ H of_mOr in the alternative greater than or equal to 30J g^-1Δ H of_mOr in the alternative greater than or equal to 50J g^-1Δ H of_m。

In an alternative embodiment, the instant invention provides a process for producing a polyolefin ionomer, and the ionomer produced thereby, in accordance with any of the embodiments disclosed herein, except that the hydrogenation is a catalytic hydrogenation and occurs in the presence of a hydrogenation catalyst. Hydrogenation catalysts are well known in the art.

In a particular embodiment, the hydrogenation catalyst is a catalyst that provides at least 90% saturation and produces a hydrogenated polyolefin reactive telechelic prepolymer having a functionality/prepolymer chain of at least 1.7. All individual values and subranges from the lower limit of 1.7 functionalities per prepolymer chain are included herein and disclosed herein. For example, the lower functionality limit may be 1.7, 1.8, 1.9, or 2.0 functionalities per prepolymer chain. In an alternative embodiment, the hydrogenated polyolefin reactive telechelic pre-polymer is equal to or less than 10 functionality per pre-polymer chain, or in the alternative, equal to or less than 7 functionality per pre-polymer chain, or in the alternative, equal to or less than 4 functionality per pre-polymer chain.

In an alternative embodiment, the instant invention provides a process for producing a polyolefin ionomer, and the ionomer produced thereby, in accordance with any of the embodiments disclosed herein, except that at least 60% of the functionality is retained after hydrogenation. All individual values and subranges from at least 60% are included herein and disclosed herein. For example, the percentage of functionality retained after hydrogenation may be in the lower range of 60, 70, 80, 90, or 95.

In an alternative embodiment, the instant invention provides a process for producing a polyolefin ionomer, and the ionomer produced thereby, in accordance with any of the embodiments disclosed herein, except that the hydrogenation results in at least 90% of the unsaturation present in the prepolymer being hydrogenated. All individual values and subranges from at least 90% are included herein and disclosed herein; for example, the lower hydrogenation level limit may be 90%, 92.5%, 95%, or 97%.

Both homogeneous and heterogeneous catalyst systems have been widely used for the hydrogenation of ethylenically unsaturated polymers. Homogeneous catalysis is disclosed in U.S. patent No. 3,595,295; no. 3,595,942; U.S. Pat. Nos. 3,700,633 And 3,810,957, the disclosures of which are incorporated herein by reference, And in "hydrogenation of polymers With Soluble Lithium/Cobalt And Aluminum/Cobalt catalysts" (Polymer hydroformations With Soluble Lithium/Cobalt And Aluminum/Cobalt catalysts); falck, Catalysis In Organic Synthesis (catalytic Synthesis), PNRylander and h.greenfield editors, academic press, new york, 1976, pages 305-24. Heterogeneous catalysts are disclosed in U.S. patent No. 3,333,024; and 3,415,789, the disclosures of which are incorporated herein by reference; belgian patent BE871348 and british patent GB2,011,911.

In an alternative embodiment, the instant invention provides a process for producing a polyolefin ionomer, and the ionomer produced thereby, in accordance with any of the embodiments disclosed herein, except that the hydrogenation is a catalytic hydrogenation at a temperature of from 50 ℃ to 80 ℃ and a pressure of from 350 to 500psi, wherein the catalyst is a silica-supported platinum catalyst. All individual values and subranges from 50 ℃ to 80 ℃ are included herein and disclosed herein; for example, the temperature of the catalytic hydrogenation can be from a lower limit of 50 ℃, 55 ℃, 60 ℃,65 ℃,70 ℃ or 75 ℃ to an upper limit of 52 ℃, 57 ℃,63 ℃, 68 ℃, 72 ℃, 77 ℃ or 80 ℃. For example, the temperature of the catalytic hydrogenation may be in the range of 50 ℃ to 80 ℃, or in the alternative, the temperature of the catalytic hydrogenation may be in the range of 65 ℃ to 80 ℃, or in the alternative, the temperature of the catalytic hydrogenation may be in the range of 50 ℃ to 68 ℃, or in the alternative, the temperature of the catalytic hydrogenation may be in the range of 60 ℃ to 75 ℃. All individual values and subranges from 350 to 500psi are included herein and disclosed herein; for example, the pressure of the catalytic hydrogenation may be from a lower limit of 350, 400, or 450psi to an upper limit of 375, 425, 475, or 500 psi. For example, the pressure of the catalytic hydrogenation may be in the range of 350 to 500psi, or in the alternative, the pressure of the catalytic hydrogenation may be in the range of 425 to 500psi, or in the alternative, the pressure of the catalytic hydrogenation may be in the range of 350 to 425psi, or in the alternative, the pressure of the catalytic hydrogenation may be in the range of 380 to 475 psi.

In an alternative embodiment, the instant invention provides a process for producing a polyolefin ionomer, and the ionomer produced thereby, in accordance with any of the embodiments disclosed herein, except that the hydrogenation is a chemical hydrogenation. Chemical hydrogenation is known in the art and is described, for example, in Die makromolece Chemie, 163, 1(1973) and Die makromolekulare Chemie, 163, 13 (1973). In chemical hydrogenation, hydrogen is taken off ("transferred") from a "hydrogen-donor" instead of H₂A gas. Hydrogen donors (which are often used as solvents) include hydrazine, dihydronaphthalene, dihydroanthracene, isopropanol, and formic acid.

Examples of the invention

The following examples illustrate the invention but are not intended to limit the scope of the invention.

Material

Cis-cyclooctene was purchased from Fisher Scientific and purified by redistillation. Grubbs second generation (G2) catalyst, ethyl vinyl ether, and maleic acid were purchased from Sigma-Aldrich (Sigma-Aldrich) and used as received. The Pt/silica supported catalyst was obtained from The Dow chemical Company and used as received. Platinum/silica supported catalysts are described in U.S. patent nos. 5,028,665; nos. 5,612,422; 5,654,253 No; 6,090,359 No; 6,399,538 No; 6,376,622 No; and 6,395,841, the disclosures of which are incorporated herein by reference. Use is disclosed in Kobayashi, s.; pitet, l.m.; 3-hexyl-cis-cyclooctene was synthesized by the procedure in h illmyer, m.a., journal of the american chemical society (j.am.chem.soc.) 2011, 133, 5794. Tetrahydrofuran for polymerization and cyclohexane for catalytic hydrogenation were purified by means of a m.braun (Stratham, NH, new hampshire) solvent purification system.

Polymerizing cis-cyclooctene to produce unsaturated prepolymer 1

Maleic acid (71.9mg, 0.62mmol), cis-cyclooctene (2.5G, 22.7mmol), G2(4.8mg, 5.6. mu. mol) and anhydrous THF (10mL) were combined according to the general copolymerization procedure. Upon isolation, an off-white (white-off) solid polymer (96%) was obtained.

¹H NMR(500MHz,CDCl₃,ppm):δ7.08(H_d,dt,J＝15.57,7.04Hz),5.82(H_e,d,J＝15.58),5.46-5.26(H_aBroad peak), 2.23 (H)_c,m),1.82-2.13(H_b,bm),1.10-1.55(CH₂' s, broad peak).

¹³C NMR(125MHz,CDCl₃Ppm). repeating units-delta 130.4 (trans), 129.9 (cis), 32.6,29.77,29.66,29.20,29.10,29.06, 27.23.

Maleic acid as chain transfer agent to copolymerize cis-cyclooctene and 3-hexyl-cis-cyclooctene in a molar ratio of 1:1 to produce unsaturated prepolymer 2

Maleic acid (87.8mg, 0.76mmol), cis-cyclooctene (1.10G, 10mmol), 3-hexyl-cis-cyclooctene (1.94G, 10mmol), G2(4.2mg, 4.9. mu. mol) and anhydrous THF (10mL) were combined according to the general copolymerization procedure. Upon isolation, a viscous, pale yellow polymer (93%) having the structure shown below was obtained, and was subsequently polymerized by¹H NMR、¹³C NMR, SEC and DSC.

¹H NMR(500MHz,CDCl₃,ppm):δ7.08(H_b,dt,J＝15.57,7.04Hz),6.82(H_b',dd,J＝15.77,9.7Hz),5.82(H_a,d,J＝15.58),5.77(H_a',d,J＝15.65Hz),5.38-5.26(H_c,H_eBroad peak), 5.09 to 5.04 (H)_d,m),2.25(CH₂-CH_b,m),2.09-1.80(H_f,bm),1.55-1.10(CH₂'s),0.88(CH₃,t,J＝6.75Hz)。

¹³C NMR(125MHz,CDCl₃Ppm) repeating unit-delta 135.2 (C-H)_d) Delta 130.5 (trans) (C-H)_c) 130.1 (cis) (C-H)_c),130.0(C-H_e)δ42.8(CH-Hex),δ35.6,32.6,32.0,29.8-27.2,22.7(CH₂'s),δ14.1(CH₃) End group δ 152.4 (CO).

M_n(NMR，)＝5.0kg.mol^-1；M_w(LS，THF)＝10.4kg.mol^-1；

(dRI，THF)＝2.1。

Amorphous polymer, Tg ═ 66 ℃.

Copolymerization of cis-cyclooctene and 3-hexyl-cis-cyclooctene in a molar ratio of 1:3 using maleic acid as chain transfer agent to produce unsaturated prepolymer 3

Maleic acid (100mg, 0.86mmol), cis-cyclooctene (550G, 5mmol), 3-hexyl-cis-cyclooctene (2.91G, 15mmol), G2(4.2mg, 4.9. mu. mol) and anhydrous THF (10mL) were combined according to the general copolymerization procedure. Upon isolation, a viscous, pale yellow polymer (87%) having the structure shown below was obtained and subsequently passed¹H NMR、¹³C NMR, SEC and DSC.

¹H NMR(500MHz,CDCl₃,ppm):δ7.08(H_b,dt,J＝15.57,7.04Hz),6.85(H_b',dd,J＝15.77,9.7Hz),5.82(H_a,d,J＝15.55),5.77(H_a',d,J＝15.50Hz),5.38-5.25(H_c,H_eBroad peak), 5.10-4.98 (H)_d,m),2.23(CH₂-CH_b,m),2.07-1.78(H_f,bm),1.51-1.07(CH₂'s),0.89(CH₃,t,J＝6.75Hz)。

¹³C NMR(125MHz,CDCl₃Ppm) repeating unit-delta 135.1 (C-H)_d) Delta 130.4 (trans) (C-H)_c),130.0(C-H_e)δ42.8(CH-Hex),δ35.6,32.6,32.0,29.8-27.2,22.7(CH₂'s),δ14.1(CH₃)。

M_n(NMR，)＝4.2kg.mol^-1；M_w(LS，THF)＝8.3kg.mol^-1；

(dRI，THF)＝1.9。

Amorphous polymer, Tg ═ 61 ℃.

Table 1 provides the molecular weight, glass transition temperature, melting temperature, crystallization temperature,. DELTA.H, of each of the unsaturated prepolymers 1 to 3 of the present invention_c(heat of crystallization) and decomposition temperature.

TABLE 1

NM means not measured or not.

Synthesis of carboxy-telechelic Low Density Polyethylene (LDPE). Hydrogenation of unsaturated prepolymers

General hydrogenation conditions

1.2g of Pt/silica supported catalyst was placed in a high Pressure reactor (Pressure Products Industries, Inc.). The reactor was sealed and the catalyst was dried under vacuum at 80 ℃ for 3 hr. The reactor was then filled with argon (550Pa) and allowed to cool to room temperature. A solution containing 12g of polyolefin in 150mL of cyclohexane was added to the reactor. While stirring, the reactor was charged with 2.4MPa of H₂And then heated to 50 ℃ to 55 ℃ for 1.5 h. After this time, the reactor temperature was increased to 80 ℃; after the system equilibrated at this temperature, the reactor was charged with additional hydrogen to 3.4MPa of H₂The pressure of (a). After 15h (16.5 h total), the system was cooled to room temperature, purged once with argon and the reactor was disassembled. The solution was filtered using a millipore (0.45 micron HVHP membrane), concentrated to half the original volume, and precipitated into 1L of room temperature methanol. The solution was stirred for 1 hour and then methanol was decanted to leave a solid or viscous liquid polymer. Dissolving the viscous polymer in a minimum amount of CH₂Cl₂And then transferred to a glass vial. The solvent was removed and the polymer was dried under high vacuum at 70 ℃. Dried polymer is prepared by¹H NMR、¹³C NMR, SEC, TGA and DSC.

Hydrogenation of unsaturated prepolymer 1 to produce hydrogenated prepolymer 1

The unsaturated prepolymer 1 was hydrogenated as previously described. An off-white solid material was obtained in 95% yield. > 99% olefin hydrogenation and >1.99 acid functionalization.

¹H NMR(500MHz,ClCD₂CD₂Cl,ppm):δ2.38(H_a,t,J＝7.10Hz),δ1.33(CH₂' s, broad peak).

Hydrogenation of unsaturated prepolymer 2 to produce hydrogenated prepolymer 2

Unsaturated prepolymer 2 was hydrogenated as previously described. A colorless, low melting, waxy material was obtained in 93% yield. > 99% olefin hydrogenation and >1.99 acid functionalization.

¹H NMR(500MHz,CDCl₃,ppm):δ2.35(H_a,t,J＝7.40Hz),1.40-δ1.10(CH₂'s,CH's,bm),δ0.88(CH₃,t,J＝7.05Hz)。

¹³C NMR(125MHz,CDCl₃,ppm):δ37.6,33.7,32.0,30.2,29.9,29.8,26.7,26.7,22.7,14.3。

Hydrogenation of unsaturated prepolymer 3 to produce hydrogenated prepolymer 3

Unsaturated prepolymer 3 was hydrogenated as previously described. A colorless, viscous material was obtained in 90% yield. 98% olefin hydrogenation and >1.95 acid functionalization.

¹H NMR(500MHz,CDCl₃,ppm):δ2.35(H_a,t,J＝7.40Hz),1.40-δ1.15(CH₂'s,CH's,bm),δ0.89(CH₃,t,J＝7.05Hz)。

¹³C NMR(125MHz,CDCl₃,ppm):δ37.6,33.7,32.0,30.2,29.9,29.8,26.7,26.7,22.7,14.2。

Synthesis of Al and Zn ionomers from hydrogenated prepolymers: general procedure

Al (+3) and Zn (2+) ionomers were prepared from hydrogenated prepolymers according to the reaction scheme shown below:

metal alkyl reagent in hexane (Al (Et))₃Or Zn (Et)₂) The 1M solution was purchased from sigma-aldrich and used as received. 0.23mmol of the carboxyl-telechelic prepolymer and 10mL of anhydrous cyclohexane (for hydrogenated prepolymer 2 and hydrogenated prepolymer 3) or toluene (for hydrogenated prepolymer 1) were added to a round bottom flask with a stir bar, the flask was covered with a septum and stirred until all the polymer was dissolved (room temperature for hydrogenated prepolymer 2 and hydrogenated prepolymer 3; 95 ℃ for hydrogenated prepolymer 1). The system was purged with argon for 20 minutes. Under an argon atmosphere, 155. mu.L (0.155mmol) of a metal alkyl reagent (1M in hexane) was added to the solution at once. The solution became highly viscous within 30 seconds. The solution was kept under stirring for another 30 min. The solvent was removed under high vacuum to yield a clear, colorless solid or a highly viscous liquid (99% yield). The material was characterized by DSC, TGA, IR and Dynamic Mechanical Thermal Analysis (DMTA).

IR spectral analysis showed a shift to lower frequencies (1600 cm)^-1) Complete elimination of acid-OH stretch and carbonyl (C ═ O) stretch. The polymers are insoluble in the most common organic solvents (THF, CH)₂Cl₂And hexane). Gel fraction (CH)₂Cl₂)＝0.99。

Synthesis of Al (+3) ionomer with hydrogenated prepolymer 1 to give inventive example 1

Thermogravimetric analysis (TGA) of inventive example 1 showed good thermal stability with 5% weight loss at 439 ℃. Differential scanning calorimetry shows T_m：132℃、T_c：117℃、ΔH_c：226J.g^-1. Crossover temperature by DMTA (Cross temperature by DMTA): 119 deg.C。

Synthesis of Al (+3) ionomer with hydrogenated Pre-Polymer 2 to give inventive example 2

Thermogravimetric analysis (TGA) of inventive example 2 showed good thermal stability with 5% weight loss at 403 ℃. Differential scanning calorimetry shows T_g＝-51℃、T_m：-35℃-59℃、T_c：10℃、ΔH_c：10J.g^-1. Crossover temperature by DMTA: 71 ℃.

Synthesis of Al (+3) ionomer with hydrogenated Pre-Polymer 3 to give inventive example 3

Thermogravimetric analysis (TGA) of inventive example 3 showed good thermal stability with 5% weight loss at 401 ℃. Differential scanning calorimetry shows T_g-64 ℃. Crossover temperature by DMTA: at 70 ℃.

Zn (+2) ionomer with hydrogenated prepolymer 2 to give inventive example 4

Thermogravimetric analysis (TGA) of inventive example 4 showed good thermal stability with 5% weight loss at 410 ℃. Differential scanning calorimetry shows T_g＝-55℃、T_m：-35℃-59℃、T_c：16℃、ΔH_c：10J.g^-1. Crossover temperature by DMTA: 31 deg.C.

Zn (+2) ionomer with hydrogenated prepolymer 3 to give inventive example 5

Thermogravimetric analysis (TGA) of inventive example 5 showed good thermal stability with 5% weight loss at 387 ℃. Differential scanning calorimetry shows T_g-65 ℃. Crossover temperature by DMTA: 1 ℃ in the presence of a catalyst.

TABLE 2

Aluminum ionomers, inventive examples 1 to 3, are insoluble in the most common organic solvents (THF, CH)₂Cl₂And hexane). Gel fraction (CH)₂Cl₂)＝0.96-0.99。

All Al ionomers and Zn ionomers showed a significant increase in decomposition temperature compared to the corresponding prepolymersLarge (in N)₂At 20 deg.C for min^-15% weight loss by TGA). With the exception of inventive example 1, all ionomers (Al and Zn) showed higher crossover temperatures than the corresponding prepolymers by Dynamic Mechanical Thermal Analysis (DMTA) (fig. 1 to 8). While inventive example 1 shows a lower crossover temperature and crystallinity than the initially hydrogenated prepolymer 1, inventive example 1 shows a much higher shear modulus than hydrogenated prepolymer 1 at temperatures above the crossover temperature.

Table 3 provides some of the mechanical properties of inventive examples 2 and 3.

TABLE 3

Test method

The test method comprises the following steps:

NMR

use of CDCl at room temperature₃As solvent, recording on a Bruker AV500 spectrometer¹H and¹³c NMR spectrum. Proton chemical shifts are referenced to TMS (0.00 ppm). Chemical displacement reference CDCl of carbon₃(77.23ppm)。

By passing¹H NMR end group analysis to determine number average molecular weight (M)_n). Weight average molecular weight (M.sub.m.) was determined at 25 ℃ using a Size Exclusion Chromatography (SEC) instrument with THF as the mobile phase at a flow rate of 1mL/min_w). The SEC instrument used was equipped with Wyatt Technology DAWN Heleos II multi-angle laser light scattering (MALLS). Size exclusion was performed with one Waters Styragel guard column packed with rigid 5 μm styrene divinylbenzene particles and three consecutive Waters Styragel columns (HR6, HR4 and HR 1). These columns together provide a molecular weight in the range of 100 to 10,000,000g mol^-1Efficient separation of the sample. Polymer Dispersion was determined using the same SEC instrument but from an RI Wyatt Optilab T-rEX detector

DSC

TA Ins in calibration with indium standardsDifferential Scanning Calorimetry (DSC) was performed on a instruments Discovery DSC. Samples of minimum mass 4mg were prepared in hermetically sealed aluminum cans and tested in N₂Next, the sample was analyzed at a heating rate of 10 ℃/min. The thermal transition temperature was determined from a second heating for at least 1min after annealing above the glass transition or melting point to erase the thermal history.

Specific gravity of

The specific gravity was measured using a density gradient column (isopropanol/ethylene glycol). The column was calibrated using a floating ball of known density and the temperature was adjusted at 25 ℃. The density values reported are the mean and standard deviation of 5 samples equilibrated for 1 hour.

Tensile test

Tensile deformation testing was performed on a Rheometrics Scientific Minimat instrument. Testing the tensile properties of ASTM D1708 micro tensile bars at a strain rate of 127 mm/min; all values are reported as the mean and standard deviation of at least four samples.

Dynamic mechanical thermal analysis

Dynamic Mechanical Thermal Analysis (DMTA) was performed on an 8mm parallel plate geometry (for Al-ionomers) or a 25mm parallel plate geometry (for Zn-ionomers) by using an ARES-G2 flow converter (TA Instruments). During the experiment, the temperature was increased from-10 ℃ to 160 ℃ (for inventive example 2) and from-10 ℃ to 200 ℃ (for inventive example 3) at a rate of 5 ℃/min. The frequency and strain were constant at 6.28rad/s and 0.05%, respectively.

The present invention may be embodied in other forms without departing from the spirit or essential attributes thereof, and, accordingly, reference should be made to the appended claims, rather than to the foregoing specification, as indicating the scope of the invention.