Olefin-unsaturated carboxylic acid polymer and preparation method thereof

A carboxylic acid polymer, unsaturated technology, applied in the polymer field, can solve the problems of large amount of catalyst, low molecular weight of active polymer, etc., achieve good thermal stability and broad industrial application prospects

Inactive Publication Date: 2019-04-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the catalysts reported in the literature are used to catalyze the copolymerization of ethylene with ethylenically unsaturated carboxylic acids (enic acids), the amount of catalyst used is relatively large, and the polymerization activity and the molecular weight of the obtained polymer are all low.

Method used

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  • Olefin-unsaturated carboxylic acid polymer and preparation method thereof
  • Olefin-unsaturated carboxylic acid polymer and preparation method thereof
  • Olefin-unsaturated carboxylic acid polymer and preparation method thereof

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preparation example Construction

[0018] According to the second aspect of the present invention, the present invention provides a kind of preparation method of olefin-unsaturated carboxylic acid polymer, and this preparation method comprises: make olefin, unsaturated carboxylic acid, catalyst, hydrocarbon solvent under polymerization reaction condition contacting with an optional chain transfer agent, the catalyst comprising a procatalyst and a cocatalyst;

[0019] The main catalyst is selected from at least one of the metal complexes shown in formula (I):

[0020]

[0021] In formula (I), R 1 -R 10 the same or different, each selected from hydrogen, saturated or unsaturated C 1 -C 24 At least one of hydrocarbyl, hydrocarbyloxy and halogen, and R 1 -R 10 Optionally ring each other; R 21 and R 22 the same or different, each selected from hydrogen, saturated or unsaturated C 1 -C 24 At least one of hydrocarbyl, hydrocarbyl and halogen, and can optionally form a ring with each other; M is selected fr...

Embodiment 1

[0060] Dry the 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 ° C for 6 hours, vacuumize while it is hot and use N 2 Air replacement 3 times. Inject 500 mL of hexane into the polymerization system, and simultaneously add 2.0 mg (2.5 μmol) of complex a, 2.76 g of 10-undecenoic acid, and 15 mL of AlEt 3 (1.0 mol / L hexane solution), 3 mL of methylaluminoxane (MAO) (1.53 mol / L toluene solution), at 30°C, maintain 10 atm ethylene pressure, and stir for 30 min. Finally, it was neutralized with an ethanol solution acidified with 5 volume % hydrochloric acid to obtain a polymer. The polymerization activity and the performance parameters of the polymer are shown in Table 1.

Embodiment 2

[0062] Dry the 1L stainless steel polymerization kettle equipped with mechanical stirring at 130 ° C for 6 hours, vacuumize while it is hot and use N 2 Air replacement 3 times. Inject 500 mL of hexane into the polymerization system, and simultaneously add 2.0 mg (2.5 μmol) of complex a, 5.53 g of 10-undecenoic acid, and 30 mL of AlEt 3 (1.0 mol / L hexane solution), 3 mL of methylaluminoxane (MAO) (1.53 mol / L toluene solution), at 30°C, maintain 10 atm ethylene pressure, and stir for 30 min. Finally, it was neutralized with an ethanol solution acidified with 5 volume % hydrochloric acid to obtain a polymer. The polymerization activity and the performance parameters of the polymer are shown in Table 1.

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Abstract

The invention relates to the field of polymers, and discloses an olefin- unsaturated carboxylic acid polymer and a preparation method thereof. The olefin- unsaturated carboxylic acid polymer is directly obtained by copolymerization, the carboxylic acid content is 0.4-20 mol %, the number-average molecular weight is 7000-1200000, the density is 0.880-0.950 g / cm<3>, and the polymer does not containalkali metal salts. The olefin- unsaturated carboxylic acid polymer disclosed by the invention has relatively high carboxylic acid content and number average molecular weight; a catalyst disclosed bythe invention can realize the copolymerization reaction at a relatively low pressure, and has relatively good thermal stability and relatively high polymerization activity; and the preparation methoddisclosed by the invention is adopted, the molecular weight and the branching degree of the olefin -unsaturated carboxylic acid copolymer can be controlled within a wide range, under the condition that no catalyst is loaded and no emulsifier is added, the polymer with good particle morphology can be prepared, and the polymer has a wide industrial application prospect.

Description

technical field [0001] The present invention relates to the field of polymers, more specifically, to an olefin-unsaturated carboxylic acid polymer, a method for preparing an olefin-unsaturated carboxylic acid polymer, and an olefin-unsaturated carboxylic acid polymer prepared by the preparation method acid polymer. Background technique [0002] Polyolefin products are low in price, excellent in performance and wide in application. Under the condition of retaining the excellent physical and chemical properties of the original polyolefin, introducing polar groups into the polyolefin molecular chain through chemical synthesis can improve its chemical inertness, printing and dyeing properties, wettability and compatibility with other materials , endowing it with new properties that its raw materials do not have. [0003] The more mature methods for preparing copolymers containing polar groups mainly include copolymerization and grafting. Most of the copolymerization methods u...

Claims

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Application Information

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IPC IPC(8): C08F210/02C08F220/04C08F4/70C08F2/06
CPCC08F210/02C08F2500/01C08F2500/24C08F220/04C08F2/06
Inventor 高榕周俊领李岩刘东兵赖菁菁黄廷杰
Owner CHINA PETROLEUM & CHEM CORP
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