阅读说明：本技术 一种复配催化剂和聚酮的制备方法 (Preparation method of compound catalyst and polyketone ) 是由 刘文超 郭龙龙 裴立军 刘英贤 王朋朋 王旭亮 曹丽艳 于 2019-10-10 设计创作，主要内容包括：本发明属于聚合物合成领域,尤其涉及一种复配催化剂和聚酮的制备方法。本发明提供的复配催化剂包括过渡金属化合物、膦配位化合物和季铵盐；所述过渡金属化合物包括镍化合物、钯化合物、铜化合物和银化合物中的一种或多种。将本发明提供的复配催化剂用于制备聚酮,可以有效改善制备过程中聚酮在反应釜内壁附着的问题,并且还可以提高制得的聚酮产品的堆积密度。实验结果表明,采用本发明复配催化剂制备的聚酮的堆密度最高可达0.28g/cm<Sup>3</Sup>。(The invention belongs to the field of polymer synthesis, and particularly relates to a preparation method of a compound catalyst and polyketone. The compound catalyst provided by the invention comprises a transition metal compound, a phosphine coordination compound and a quaternary ammonium salt; the transition metal compound includes one or more of a nickel compound, a palladium compound, a copper compound, and a silver compound. When the compound catalyst provided by the invention is used for preparing polyketone, the problem that the polyketone is adhered to the inner wall of a reaction kettle in the preparation process can be effectively solved, and the bulk density of the prepared polyketone product can be improved. Experimental results show that the maximum bulk density of the polyketone prepared by adopting the compound catalyst can reach 0.28g/cm 3 。)

1. A compound catalyst comprises a transition metal compound, a phosphine coordination compound and a quaternary ammonium salt;

the transition metal compound includes one or more of a nickel compound, a palladium compound, a copper compound, and a silver compound.

2. The built catalyst of claim 1, wherein the nickel compound comprises nickel acetate and/or nickel acetoacetate;

the palladium compound comprises one or more of palladium trifluoroacetate, palladium acetyl chloride, palladium chloride, bis (N, N-diethylamino methyl acetate) bis (diethylamine) palladium and palladium sulfate;

the copper compound comprises one or more of copper acetate, copper trifluoroacetate and copper acetoacetate;

the silver compound includes one or more of silver acetate, silver trifluoroacetate, silver acetoacetate, and silver triflate.

3. The formulated catalyst of claim 1, wherein the phosphine coordination compound comprises 1, 2-bis (diphenylphosphino) ethane, 1, 3-bis (diphenylphosphino) propane, 1, 4-bis (diphenylphosphino) butane, 1, 3-bis [ bis (2-methyl) phosphino ] propane, 1, 3-bis [ bis (2-isopropyl) phosphino [ propane, 1, 3-bis [ bis (2-methoxyphenyl) phosphino ] propane, 1, 3-bis [ bis (2-methoxy-4-sodium sulfonate-phenyl) phosphino ] propane, 1, 2-bis (diphenylphosphino) cyclohexane, 1, 2-bis (diphenylphosphino) benzene, 1, 2-bis [ (diphenylphosphino) methyl ] benzene, 1, 2-bis { [ bis (2-methoxyphenyl) phosphino ] methyl } benzene, One or more of 1, 2-bis { [ bis (2-methoxy-4-sodium sulfonate-phenyl) phosphino ] methyl } benzene, 1' -bis (diphenylphosphino) ferrocene, 2-hydroxy-1, 3-bis [ bis (2-methoxyphenyl) phosphino ] propane, 2-dimethyl-1, 3-bis [ (2-methoxyphenyl) phosphino ] propane, 1, 3-bis (diphenylphosphino) ferrocene, and 1, 3-bis [ bis (2-methoxy-5-methylphenyl) phosphino ] propane.

4. The built catalyst of claim 1, wherein the quaternary ammonium salt comprises one or more of choline chloride, tetrabutylammonium bromide, betaine hydrochloride, cetyltrimethylammonium bromide, dodecyldimethylbenzylammonium chloride, dioctadecyldimethylammonium bromide, octadecyldimethylhydroxyethylammonium nitrate, and dodecyldimethylbenzylammonium chloride.

5. The built catalyst according to claim 1, wherein the molar ratio of the transition metal compound, the phosphine coordination compound and the quaternary ammonium salt is 1: (0.1-3): (0.1-10).

6. The built catalyst of claim 5, wherein the molar ratio of the transition metal compound, the phosphine coordination compound and the quaternary ammonium salt is 1:1.2: 1.5.

7. A preparation method of polyketone comprises the following steps:

in the presence of a catalyst, reacting carbon monoxide with an alkenyl compound in a liquid medium to obtain polyketone;

the catalyst is the compound catalyst of any one of claims 1-6.

8. The method of claim 7, wherein the alkenyl compound comprises one or more of an alpha-olefin, an alkenyl aromatic compound, a cyclic olefin, a halogenated olefin, and an olefinic acid ester.

9. The method of claim 8, wherein the alpha-olefin comprises one or more of ethylene, propylene, 1-butene, 1-hexene, 4-methyl-1-pentene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene, and vinylcyclohexane;

the alkenyl aromatic compound comprises styrene and/or alpha-methyl styrene;

the cyclic olefin comprises one or more of cyclopentene, norbornene, 5-methylnorbornene, 5-phenylnorbornene, tetracyclododecene, tricyclodecene, tricycloundecene, pentacyclopentadecene, pentacyclohexadecene and 8-ethyltetracyclododecene;

the halogenated olefin comprises vinyl chloride;

the alkenoic acid ester comprises ethyl acrylate and/or methyl acrylate.

10. The production method according to claim 7, wherein the pressure of the reaction is from normal pressure to 20 MPa; the reaction temperature is 40-180 ℃; the reaction time is 1-5 h.

Technical Field

The invention belongs to the field of polymer synthesis, and particularly relates to a preparation method of a compound catalyst and polyketone.

Background

Polyketone (PK) refers to a class of polymers whose molecular backbone is composed of vinyl and carbonyl segments. From the viewpoint of the composition of the main chain structure, polyketones can be classified into alternating copolymers and random copolymers. Polyketone materials have received much attention because they have high mechanical strength and high functionality (chemical resistance, gas barrier properties, abrasion resistance, high toughness and impact resistance) and the raw materials used for their preparation are inexpensive.

The research on the synthesis process of polyketone begins as early as the early 50 s of the last century, and the polyketone can be prepared by three ways of free radical copolymerization, radiation copolymerization and catalytic copolymerization of an alkenyl compound and carbon monoxide. In recent years, catalytic copolymerization is mostly studied, however, at present, when polyketone is synthesized by adopting a catalytic copolymerization mode, polyketone products are easy to adhere to the inner wall of a reaction kettle, and the powder bulk density of the prepared polyketone products is low, so that the continuity and the production efficiency of a polyketone production process are seriously influenced, and the production cost is increased.

Disclosure of Invention

In view of the above, the present invention aims to provide a compound catalyst and a preparation method of polyketone, which can improve the adhesion problem of polyketone products on the inner wall of a reaction kettle and increase the bulk density of polyketone products when the polyketone is prepared by using the compound catalyst provided by the present invention.

The invention provides a compound catalyst, which comprises a transition metal compound, a phosphine coordination compound and a quaternary ammonium salt;

the transition metal compound includes one or more of a nickel compound, a palladium compound, a copper compound, and a silver compound.

Preferably, the nickel compound comprises nickel acetate and/or nickel acetoacetate;

the palladium compound comprises one or more of palladium trifluoroacetate, palladium acetyl chloride, palladium chloride, bis (N, N-diethylamino methyl acetate) bis (diethylamine) palladium and palladium sulfate;

the copper compound comprises one or more of copper acetate, copper trifluoroacetate and copper acetoacetate;

the silver compound includes one or more of silver acetate, silver trifluoroacetate, silver acetoacetate, and silver triflate.

Preferably, the phosphine coordination compound includes 1, 2-bis (diphenylphosphino) ethane, 1, 3-bis (diphenylphosphino) propane, 1, 4-bis (diphenylphosphino) butane, 1, 3-bis [ bis (2-methyl) phosphino ] propane, 1, 3-bis [ bis (2-isopropyl) phosphino [ propane, 1, 3-bis [ bis (2-methoxyphenyl) phosphino ] propane, 1, 3-bis [ bis (2-methoxy-4-sodium sulfonate-phenyl) phosphino ] propane, 1, 2-bis (diphenylphosphino) cyclohexane, 1, 2-bis (diphenylphosphino) benzene, 1, 2-bis [ (diphenylphosphino) methyl ] benzene, 1, 2-bis { [ bis (2-methoxyphenyl) phosphino ] methyl } benzene, One or more of 1, 2-bis { [ bis (2-methoxy-4-sodium sulfonate-phenyl) phosphino ] methyl } benzene, 1' -bis (diphenylphosphino) ferrocene, 2-hydroxy-1, 3-bis [ bis (2-methoxyphenyl) phosphino ] propane, 2-dimethyl-1, 3-bis [ (2-methoxyphenyl) phosphino ] propane, 1, 3-bis (diphenylphosphino) ferrocene, and 1, 3-bis [ bis (2-methoxy-5-methylphenyl) phosphino ] propane.

Preferably, the quaternary ammonium salts include one or more of choline chloride, tetrabutylammonium bromide, betaine hydrochloride, cetyltrimethylammonium bromide, dodecyldimethylbenzylammonium chloride, dioctadecyldimethylammonium bromide, octadecyldimethylhydroxyethylammonium nitrate and dodecyldimethylbenzylammonium chloride.

Preferably, the transition metal compound, the phosphine complex compound and the quaternary ammonium salt are present in a molar ratio of 1: (0.1-3): (0.1-10).

Preferably, the molar ratio of the transition metal compound, the phosphine complex compound and the quaternary ammonium salt is 1:1.2: 1.5.

The invention provides a preparation method of polyketone, which comprises the following steps:

in the presence of a catalyst, reacting carbon monoxide with an alkenyl compound in a liquid medium to obtain polyketone;

the catalyst is the compound catalyst of the technical scheme.

Preferably, the alkenyl compound includes one or more of an α -olefin, an alkenyl aromatic compound, a cyclic olefin, a halogenated olefin, and an olefinic acid ester.

Preferably, the alpha-olefin comprises one or more of ethylene, propylene, 1-butene, 1-hexene, 4-methyl-1-pentene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene and vinylcyclohexane;

the alkenyl aromatic compound comprises styrene and/or alpha-methyl styrene;

the cyclic olefin comprises one or more of cyclopentene, norbornene, 5-methylnorbornene, 5-phenylnorbornene, tetracyclododecene, tricyclodecene, tricycloundecene, pentacyclopentadecene, pentacyclohexadecene and 8-ethyltetracyclododecene;

the halogenated olefin comprises vinyl chloride;

the alkenoic acid ester comprises ethyl acrylate and/or methyl acrylate.

Preferably, the pressure of the reaction is normal pressure to 20 MPa; the reaction temperature is 40-180 ℃; the reaction time is 1-5 h.

Compared with the prior art, the invention provides a preparation method of a compound catalyst and polyketone. The compound catalyst provided by the invention comprises a transition metal compound, a phosphine coordination compound and a quaternary ammonium salt; the transition metal compound includes one or more of a nickel compound, a palladium compound, a copper compound, and a silver compound. When the compound catalyst provided by the invention is used for preparing polyketone, the problem that the polyketone is adhered to the inner wall of a reaction kettle in the preparation process can be effectively solved, and the bulk density of the prepared polyketone product can be improved. Experimental results show that the maximum bulk density of the polyketone prepared by adopting the compound catalyst can reach 0.28g/cm³。

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The invention provides a compound catalyst, which comprises a transition metal compound, a phosphine coordination compound and a quaternary ammonium salt;

the transition metal compound includes one or more of a nickel compound, a palladium compound, a copper compound, and a silver compound.

The compound catalyst provided by the invention comprises a transition metal compound, a phosphine coordination compound and a quaternary ammonium salt. Wherein the transition metal compound comprises one or more of a nickel compound, a palladium compound, a copper compound, and a silver compound; the nickel compound comprises nickel acetate and/or nickel acetoacetate; the palladium compound preferably comprises one or more of palladium trifluoroacetate, palladium acetyl chloride, palladium chloride, bis (N, N-diethylamino methyl acetate) bis (diethylamine) palladium and palladium sulfate; the copper compound preferably comprises one or more of copper acetate, copper trifluoroacetate and copper acetoacetate; the silver compound preferably comprises one or more of silver acetate, silver trifluoroacetate, silver acetoacetate and silver triflate. In the present invention, the economically preferable transition metal compound is a nickel compound and/or a copper compound; the preferred transition metal compound in terms of yield and molecular weight of polyketone is a palladium compound. Palladium chloride is most preferably used in terms of increasing the catalyst activity and the intrinsic viscosity.

In the present invention, the phosphine coordination compound preferably includes 1, 2-bis (diphenylphosphino) ethane, 1, 3-bis (diphenylphosphino) propane, 1, 4-bis (diphenylphosphino) butane, 1, 3-bis [ bis (2-methyl) phosphino ] propane, 1, 3-bis [ bis (2-isopropyl) phosphino [ propane, 1, 3-bis [ bis (2-methoxyphenyl) phosphino ] propane, 1, 3-bis [ bis (2-methoxy-4-sodium sulfonate-phenyl) phosphino ] propane, 1, 2-bis (diphenylphosphino) cyclohexane, 1, 2-bis (diphenylphosphino) benzene, 1, 2-bis [ (diphenylphosphino) methyl ] benzene, 1, 2-bis { [ bis (2-methoxyphenyl) phosphino ] methyl } benzene, One or more of 1, 2-bis { [ bis (2-methoxy-4-sodium sulfonate-phenyl) phosphino ] methyl } benzene, 1' -bis (diphenylphosphino) ferrocene, 2-hydroxy-1, 3-bis [ bis (2-methoxyphenyl) phosphino ] propane, 2-dimethyl-1, 3-bis [ (2-methoxyphenyl) phosphino ] propane, 1, 3-bis (diphenylphosphino) ferrocene, and 1, 3-bis [ bis (2-methoxy-5-methylphenyl) phosphino ] propane.

In the present invention, the quaternary ammonium salt preferably includes one or more of choline chloride, tetrabutylammonium bromide, betaine hydrochloride, cetyltrimethylammonium bromide, dodecyldimethylbenzylammonium chloride, dioctadecyldimethylammonium bromide, octadecyldimethylhydroxyethylammonium nitrate and dodecyldimethylbenzylammonium chloride.

In the present invention, in the built-up catalyst, the molar ratio of the transition metal compound, the phosphine complex compound and the quaternary ammonium salt is preferably 1: (0.1-3): (0.1-10). Wherein the molar ratio of the transition metal compound and the phosphine complex compound is more preferably 1: (1-3), specifically 1:1, 1:1.1, 1:1.2, 1:1.3, 1:1.4, 1:1.5, 1:1.6, 1:1.7, 1:1.8, 1:1.9, 1:2, 1:2.1, 1:2.2, 1:2.3, 1:2.4, 1:2.5, 1:2.6, 1:2.7, 1:2.8, 1:2.9 or 1: 3; the molar ratio of the transition metal compound and the quaternary ammonium salt is more preferably 1: (1-5), specifically 1:1, 1:1.2, 1:1.5, 1:1.7, 1:2, 1:2.3, 1:2.5, 1:2.7, 1:3, 1:3.2, 1:3.5, 1:3.7, 1:4, 1:4.2, 1:4.5, 1:4.7 or 1: 5. In the invention, the molar ratio of the transition metal compound, the phosphine coordination compound and the quaternary ammonium salt is most preferably 1:1.2:1.5, the compound catalyst under the molar ratio has the best use effect, polyketone prepared by adopting the compound catalyst has the most satisfactory bulk density, and the obtained polyketone product can not be attached to the inner wall of the reaction kettle at all.

The invention carries out optimized design on the component composition of the compound catalyst, and the compound catalyst provided by the invention is used for preparing polyketone, so that the problem of adhesion of the polyketone on the inner wall of a reaction kettle in the preparation process can be effectively solved, and the bulk density of the prepared polyketone product can be improved. Experimental results show that the maximum bulk density of the polyketone prepared by adopting the compound catalyst can reach 0.28g/cm³。

The invention also provides a preparation method of the polyketone, which comprises the following steps:

in the presence of a catalyst, reacting carbon monoxide with an alkenyl compound in a liquid medium to obtain polyketone;

the catalyst is the compound catalyst of the technical scheme.

In the preparation method provided by the invention, carbon monoxide and the alkenyl compound are firstly reacted in a liquid medium in the presence of the catalyst. Wherein the alkenyl compound preferably comprises one or more of an alpha-olefin, an alkenyl aromatic compound, a cyclic olefin, a halogenated olefin, and an olefinic acid ester; the alpha-olefin preferably comprises one or more of ethylene, propylene, 1-butene, 1-hexene, 4-methyl-1-pentene, 1-octene, 1-decene, 1-dodecene, 1-tetradecene, 1-hexadecene and vinylcyclohexane; the alkenyl aromatic compound preferably comprises styrene and/or alpha-methylstyrene; the cyclic olefin preferably comprises one or more of cyclopentene, norbornene, 5-methylnorbornene, 5-phenylnorbornene, tetracyclododecene, tricyclodecene, tricycloundecene, pentacyclopentadecene, pentacyclohexadecene and 8-ethyltetracyclododecene; the halogenated olefin preferably comprises vinyl chloride; the alkenoic acid ester preferably comprises ethyl acrylate and/or methyl acrylate. In the present invention, the alkenyl compound is more preferably an α -olefin, most preferably an α -olefin having 2 to 4 carbon atoms, and most preferably ethylene.

In the preparation method provided by the invention, the liquid medium includes but is not limited to one or more of alcohol, phenol, amine, ketone, ether and nitrile; the alcohol preferably comprises one or more of ethanol, propanol, butanol, hexafluoroisopropanol and ethylene glycol; the phenol is preferably m-cresol; the amine is preferably aniline; the ketone preferably comprises acetone and/or methyl ethyl ketone; the ether preferably comprises one or more of diethyl ether, tetrahydrofuran and diglyme; the nitrile is preferably acetonitrile. In the present invention, the liquid medium is preferably an alcohol, more preferably ethanol, in terms of economy and stability of operation.

In the preparation method provided by the invention, the dosage ratio of the transition metal compound in the compound catalyst to the liquid medium is preferably (0.01-100) mmol: 1L, more preferably (0.01 to 10) mmol: 1L of the compound.

In the preparation method provided by the invention, the reaction is carried out in a closed reaction kettle, and before the reaction, air in the closed reaction kettle is removed. In the present invention, the gas volume ratio of the carbon monoxide to the alkenyl compound in the closed reaction vessel is preferably 1: (0.5-2), specifically 1:0.5, 1:0.6, 1:0.7, 1:0.8, 1:0.9, 1:1, 1:1.1, 1:1.2, 1:1.3, 1:1.4, 1:1.5, 1:1.6, 1:1.7, 1:1.8, 1:1.9 or 1: 2; the pressure of the reaction is preferably normal pressure to 20MPa, more preferably 4 to 15MPa, and specifically may be 4MPa, 4.5MPa, 5MPa, 5.5MPa, 6MPa, 6.5MPa, 7MPa, 7.5MPa, 8MPa, 8.5MPa, 9MPa, 9.5MPa, 10MPa, 10.5MPa, 11MPa, 11.5MPa, 12MPa, 12.5MPa, 13MPa, 13.5MPa, 14MPa, 14.5MPa or 15 MPa; the reaction temperature is preferably 40-180 ℃, more preferably 50-120 ℃, and specifically can be 50 ℃, 55 ℃, 60 ℃, 65 ℃, 70 ℃, 75 ℃, 80 ℃, 85 ℃, 90 ℃, 95 ℃, 100 ℃, 105 ℃, 110 ℃, 115 ℃ or 120 ℃; the reaction time is preferably 1-5 h, and specifically can be 1h, 1.5h, 2h, 2.5h, 3h, 3.5h, 4h, 4.5h or 5 h.

In the preparation method provided by the present invention, after the reaction is finished, the reaction product is post-treated, and the post-treatment process preferably includes: and sequentially filtering, washing and drying the reaction product. After the post-treatment is finished, polyketone is obtained.

According to the preparation method provided by the invention, the compound catalyst provided by the technical scheme of the invention is adopted to prepare the polyketone, so that the problem of adhesion of the polyketone on the inner wall of a reaction kettle in the preparation process can be effectively solved, and the bulk density of the prepared polyketone product can be improved. Experimental results show that the maximum bulk density of the polyketone prepared by the preparation method can reach 0.28g/cm³。

For the sake of clarity, the following examples and comparative examples are described in detail below.

In the following examples and comparative examples provided by the present invention, the catalyst activity is expressed as polyketone weight obtained by polymerization ÷ (weight of palladium × reaction time), unit: kg/g-Pd.hr;

the bulk density is the weight of polyketone obtained by polymerization ÷ volume of polyketone, unit: g/cm³。