Olefin-unsaturated carboxylic acid polymer and preparation method thereof

A carboxylic acid polymer, unsaturated technology, applied in the field of polymers, can solve the problems of large amount of catalyst and low molecular weight of polymerization active polymer, and achieve the effects of 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

Examples

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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 and R 4 same or different, each selected from C 1 -C 30 Hydrocarbyl or heterohydrocarbyl; R 2 and R 3 The same or different, each selected from hydrogen atom, chlorine atom, C 1 -C 20 hydrocarbon group, heterochain hydrocarbon group or heterocyclic group containing oxygen, nitrogen, boron, sulfur, phosphorus, silicon, germanium or tin atoms, and R 2 and R 3 Optional mutual ring formation; M is Group VIII met...

Embodiment 1

[0068] 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 1.6 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 1 volume % hydrochloric acid to obtain a polymer. The polymerization activity and the performance parameters of the polymer are shown in Table 1.

Embodiment 2

[0070] 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 1.6 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 1 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 0.2-15mol %, the number-average molecular weight is 5000-200000, the melting point is 45 ~ 130 DEG C, the density is 0.910 ~ 1.000 g / cm<3>, and the polymer does not contain alkali 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 by the invention can realize the copolymerization reaction at a relatively low pressure, and has relatively good thermal stability and relatively high polymerizationactivity; and the preparation method disclosed by the invention is adopted, the molecular weight and the branching degree of the olefin -unsaturated carboxylic acid copolymer can be controlled withina 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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Patent Type & Authority Applications(China)
IPC IPC(8): C08F210/02C08F4/602
CPCC08F210/02C08F2400/02C08F4/602C08F2500/20C08F220/62C08F4/7006C08F2/38C08F2/06C08F220/06C08F2500/07C08F2500/24C08F2500/27C08F2500/34C08F2500/02C08F220/04C08F220/64C08F4/7098C08F4/52C08J9/00C08J2323/08C08J9/16C08J2205/04C08J2333/02
Inventor 高榕周俊领李岩刘东兵赖菁菁徐世媛
Owner CHINA PETROLEUM & CHEM CORP
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