A kind of copolymer composition of n-phenylmaleimide derivatives

A technology of maleimide and derivatives, applied in the field of copolymer compositions of N-phenylmaleimide derivatives, can solve problems such as limited heat resistance temperature of polymers, and achieve good effect and heat resistance. The effect of improving performance and increasing the field of application

Active Publication Date: 2019-05-07
江西省生宸源建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, it is limited to increase the heat-resistant temperature of the polymer, especially the application in nylon 6, as reported in the patent CN 104356297A

Method used

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  • A kind of copolymer composition of n-phenylmaleimide derivatives
  • A kind of copolymer composition of n-phenylmaleimide derivatives
  • A kind of copolymer composition of n-phenylmaleimide derivatives

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The synthesis steps of CPMA: (1) Dissolve 1.078g MAH in 10mL of DMF; (2) Dissolve 1.51g of p-aminobenzoic acid in 10mL of DMF, and then add the solution dropwise to the DMF solution of MAH within 15-30min medium; (3) react at 40 degrees for 6 hours; (4) after the reaction, cool the reaction system to room temperature, and then extract it with crushed ice; (5) Dry the CPMA in an oven at 40°C.

[0019] Weigh 2.17g 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 of dehydrating agent acetic anhydride, 0.2g of polymerization inhibitor hydroquinone, raise the temperature, control the temperature between 50-55°C, react for 2h, the solution becomes light yellow and transparent, After cooling to room temperature, let it stand still, pour the solution into crushed ice to precipitate a large number of yellow needle-like crystals, then carry out suction filtration, washing, and dry...

Embodiment 2

[0025] Synthesis steps of CPMA: (1) Dissolve 10.78g MAH in 10mL of DMF; (2) Dissolve 15.1g of p-aminobenzoic acid in 100mL of DMF, and then add the solution dropwise to the DMF solution of MAH within 15-30min medium; (3) react at 40 degrees for 6 hours; (4) after the reaction, cool the reaction system to room temperature, and then extract it with crushed ice; (5) Dry the CPMA in an oven at 40°C.

[0026] Weigh 21.7g 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 of dehydrating agent acetic anhydride, 2g of polymerization inhibitor hydroquinone, raise the temperature, control the temperature between 50-55°C, react for 2h, the solution becomes light yellow and transparent, cool to After standing at room temperature, the solution was poured into crushed ice to precipitate a large number of yellow needle-like crystals, and then filtered, washed and dried to obtain pure light yello...

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Abstract

The invention discloses a copolymer composition of an N-phenylmaleimide derivative. A method is characterized by comprising the following steps: heating an oil bath pan to 50 to 90 DEG C, and stirring the N-phenylmaleimide derivative, styrene, maleic anhydride and xylene under 50 to 90 DEG C for 20 to 60 minutes; adding the xylene, introducing in an N2 gas, stirring, and refluxing after heating to 90 to 120 DEG C; then adding an initiator, and heating to 125 DEG C for reacting, thus obtaining a primary product; dissolving the primary product into acetone under 125 DEG C, and adding methanol; carrying out vacuum drying on an obtained product, thus obtaining powdery resin.

Description

technical field [0001] The invention relates to a copolymer composition of N-phenylmaleimide derivatives, and specifically belongs to the field of synthesis 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 and pesticides, especially for improving the benzene Vinyl resins, polyvinyl chloride resins, polymethyl methacrylate resins, phenolic resins, and the like are often used as one of the copolymerization components due to their heat resistance. Among them, N-phenylmaleimide is particularly widely used because of its excellent reactivity and heat resistance. [0003] Many methods are known from the prior art regarding the production methods of N-phenylmaleimide and its derivatives. There are many reports in literature review and related patents: one-step method, acid anhydride method, deacidification method, esterification metho...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F230/08C08F212/08C08F222/08C07F7/18
CPCC07F7/1804C07F7/1892C08F222/06C08F212/08C08F230/08
Inventor 何敏刘玉飞于杰
Owner 江西省生宸源建材有限公司
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