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N-phenylmaleimide derivative and preparation method thereof

A technology of maleimide and derivatives, which is applied in the field of N-phenylmaleimide derivatives and its preparation, and can solve the problem of limited heat-resistant temperature of polymers

Active Publication Date: 2017-12-29
GUIZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But it is limited to improve the heat-resistant temperature of the polymer, especially the application in nylon 6, as reported in the patent CN104356297A

Method used

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  • N-phenylmaleimide derivative and preparation method thereof
  • N-phenylmaleimide derivative and preparation method thereof
  • N-phenylmaleimide derivative and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] CPMA synthesis steps: Dissolve 1.078g MAH in 10mL DMF; Dissolve 1.51g p-aminobenzoic acid in 10mL DMF, and then add the solution dropwise to MAH DMF solution within 15-30min; at 40°C Reaction for 6h; after the reaction, the reaction system is cooled to room temperature, and then extracted with crushed ice; the reaction solution is poured on crushed ice, placed for 3-5min, and filtered while cold; placed in a 40℃ oven to bake CPMA.

[0018] Weigh 2.17 g of N-(4-carboxyphenyl)maleamic acid (CPMA) synthesized in the first step and dissolve it in DMF. Add 0.2g of catalyst anhydrous sodium acetate, 2mL dehydrating agent acetic anhydride, 0.2g polymerization inhibitor hydroquinone, increase the temperature, control the temperature between 50-55℃, react for 2h, and the solution will become light yellow and transparent. After cooling to room temperature, let it stand, pour the solution into crushed ice to precipitate a large number of yellow needle-like crystals, and then perform ...

Embodiment 2

[0022] CPMA synthesis steps: Dissolve 10.78g MAH in 10mL DMF; Dissolve 15.1g p-aminobenzoic acid in 100mL DMF, and then add the solution dropwise to MAH DMF solution within 15-30min; at 40°C Reaction for 6h; after the reaction, the reaction system is cooled to room temperature, and then extracted with crushed ice; the reaction solution is poured on crushed ice, placed for 3-5min, and filtered while cold; placed in a 40℃ oven to bake CPMA.

[0023] Weigh 21.7 g of N-(4-carboxyphenyl)maleamic acid (CPMA) synthesized in the first step and dissolve it in DMF. Add 2g of catalyst anhydrous sodium acetate, 20mL dehydrating agent acetic anhydride, 2g polymerization inhibitor hydroquinone, increase the temperature, control the temperature between 50-55℃, react for 2h, the solution will become light yellow and transparent, and cool to After room temperature, let stand, pour the solution into crushed ice to precipitate a large number of yellow needle-like crystals, and then perform suction ...

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Abstract

The invention discloses an N-phenylmaleimide derivative. The N-phenylmaleimide derivative CPMI-KH550 is characterized in that the structural formula is shown in the description. The novel N-phenylmaleimide derivative has the advantages that heat-resistance temperature of nylon 6 can be increased greatly, the problem of low heat-resistance temperature of nylon 6 is solved, the thermal deformation temperature of nylon 6 is increased to 75 DEG C from 56 DEG C, and the application field of nylon 6 is expanded greatly.

Description

Technical field [0001] The invention relates to an N-phenylmaleimide derivative and a preparation method thereof, and belongs to the synthetic field of resin raw materials and pharmaceutical and pesticide intermediates. Background technique [0002] Maleimide and its derivatives are useful compounds as raw materials for resins, pharmaceuticals, pesticides, etc., especially for improving the benzene content of ABS resin, AS resin, AB resin, ACS resin, AES resin, and AAS resin. The heat resistance of vinyl resins, polyvinyl chloride resins, polymethyl methacrylate resins, phenol resins, and the like are often used as one of the copolymer components. Among them, since N-phenylmaleimide is excellent in reactivity and heat resistance, it is particularly widely used. [0003] Regarding the manufacturing method of N-phenylmaleimide and its derivatives, many methods are known from the prior art. Literature review and related patents have many reports: one-step method, acid anhydride meth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F7/18C08K5/544C08L77/02
CPCC07F7/1804C07F7/1892C08K5/5477C08L77/02
Inventor 刘玉飞何敏于杰
Owner GUIZHOU UNIV