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Carboxylic side group containing high performance polyaryl ether copolymer and its preparation

A polyarylether, high-performance technology, applied in the field of polymer materials, can solve the problem of low Tg

Inactive Publication Date: 2006-04-19
广州聚生生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to further develop the potential application value of polyaryletherketone and make up for some deficiencies of existing materials, such as low Tg, etc., we solve the problem of existing polyaryl ether ketone by changing the difluoromonomer polymerized with bisphenol. Problems such as low Tg of ether ketone materials, and prepare some new materials

Method used

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  • Carboxylic side group containing high performance polyaryl ether copolymer and its preparation
  • Carboxylic side group containing high performance polyaryl ether copolymer and its preparation
  • Carboxylic side group containing high performance polyaryl ether copolymer and its preparation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1: 28.63 grams (0.1mol) of 4,4'-di(p-hydroxyphenyl)-2-pentanoic acid, 13.9 grams (0.1mol) of 2,6-difluorobenzonitrile, 24.84 grams (0.18mol) Anhydrous potassium carbonate, 250ml sulfolane (or dimethylformamide, dimethyl sulfoxide, N-methylpyrrolidone, the impact of different solvents on the reaction results is only that the molecular weight of the resulting polymer is not the same), 50ml toluene (different The azeotropic dehydrating agent has no effect on the reaction result) put it into a 500ml three-necked flask equipped with a water device, ventilate nitrogen, heat up and stir, reflux for 1.5-2 hours, remove toluene, and heat up to 210°C. The reaction was continued at around 210°C for 5 hours.

[0039]If the reacted solution is poured into deionized water, crushed, washed, and dried, polyarylether nitrile containing potassium salt is obtained; The method is acidified in a solvent for 12 hours, then poured into deionized water, pulverized, washed and dried to...

Embodiment 2

[0041] Example 2: 2,6-difluorobenzonitrile in Example 1 is replaced with 32.2 grams (0.1 mol) of 1,4-di-4-fluorobenzoylbenzene, and other conditions are the same, then a polyether with a carboxyl group is obtained ether ketone ketone. The glass transition temperature of the carboxyl-containing material measured by DSC is 167°C, and the reaction formula is as follows:

[0042]

Embodiment 3

[0043] Example 3: 2,6-difluorobenzonitrile in Example 1 was replaced with 37.2 grams (0.1 mol) of 1,4-di-4-fluorobenzoylnaphthalene, and other conditions were the same to obtain polyether ether with carboxyl groups Keto Keto. The glass transition temperature of the carboxyl-containing material measured by DSC is 176°C, and the reaction formula is as follows:

[0044]

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Abstract

A series of new type carboxyl side chain contained aromatic-ether-ketone copolymers materials are prepared from double fluorine monomers 2,6-difluorophenylnitrile, 1,4-bis-4-fluorobenzoylphenyl, 1,4-bis-4- fluorobenzoylnaphthalene or 4,4'-bis-4-fluorobenzoylbiphenyl and 4,4'-bis ( p- hydroxyphenyl)-2-pentanoic acid with alkali metal salts as catalysts and with polar solvent containing cyclic butyl sulphone, N,N-dimethyl formamide, dimethyl sulfoxide or N- methyl pyrrolidine ketone as reaction media by high temperature polymerizing to obtain carboxyl side groups contained aromatic-ether-ketone homopolymer, random polymer and block copolymers. They have high molecular weight and good mechanic performance. As new type carboxyl side group contained aromatic-ether polymer functional materials, they can be widely used as materials for separating membranes or strengtheninging materials.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a series of novel high-performance polyaryletherketone copolymers containing carboxyl side groups and a preparation method for the series of copolymer materials. Background technique [0002] As a semi-crystalline polymer material, polyaryletherketone (PAEK) has high heat resistance, radiation resistance, chemical resistance, fatigue resistance, impact resistance, creep resistance, wear resistance, good hot water resistance, flame retardant Good performance, excellent electrical properties and other comprehensive properties, so it has been successfully applied in high-tech fields such as aviation, aerospace, nuclear energy, information, communications, electronic telecommunications, petrochemicals, machinery manufacturing, transportation, etc., so that many industries Traditional products have been updated. Due to the excellent performance and wide application fields...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/40
Inventor 姜振华王冬姜伟魏红王贵宾吴忠文
Owner 广州聚生生物科技有限公司
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