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PPTA containing 2,4 di (4-amino phenyl)-2,3-diaza naphthalene-1-one and preparation process thereof

A technology of naphthyridine and aminophenyl, which is applied in the synthesis of high polymers and the polymerization of para-polyarylamides. It can solve the problems of insoluble and infusible PPTA resins, resistance to strong acid corrosion, and difficult processing, and achieve good results. Dissolution performance, good electrical insulation performance, simple and easy synthesis process

Inactive Publication Date: 2006-06-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, PPTA resin is insoluble and infusible, liquid crystal spinning must be carried out in concentrated sulfuric acid, the process is complicated, the equipment requires resistance to strong acid corrosion, and processing is relatively difficult

Method used

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  • PPTA containing 2,4 di (4-amino phenyl)-2,3-diaza naphthalene-1-one and preparation process thereof
  • PPTA containing 2,4 di (4-amino phenyl)-2,3-diaza naphthalene-1-one and preparation process thereof
  • PPTA containing 2,4 di (4-amino phenyl)-2,3-diaza naphthalene-1-one and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 100ml of NMP to a 250ml three-necked flask, N 2 Protect, stir, add a certain amount of CaCl 2 , slowly heat up to 70 ° C, after complete dissolution, cool to room temperature, add 3.078 g of p-phenylenediamine and 0.492 g of 2,4-bis(4-aminophenyl)-2,3-naphthalene-1-one , when all the materials were dissolved, cooled to -5°C, added 6.090 grams of terephthaloyl chloride, accelerated stirring until the phenomenon of climbing rods appeared, reacted for 30 minutes, and added 2.22 grams of Ca(OH) 2 Neutralize for 20 min to obtain a copolycondensation PPTA solution. The prepared solution is thoroughly washed with water and dried to obtain a novel PPTA resin, whose characteristic viscosity measured in 98% concentrated sulfuric acid is 3.2. The PPTA can be dissolved in NMP, or solution-spun.

Embodiment 2

[0017] Add 100ml of NMP to a 250ml three-necked flask, N 2 Protect, stir, add a certain amount of CaCl 2 , slowly heat up to 70 ° C, dissolve, cool to room temperature, add 3.888 g of p-phenylenediamine, wait for the material to be completely dissolved, cool to -5 ° C, add 8.12 g of terephthaloyl chloride, react for 10 min, and synthesize a certain degree of polymerization. Oligomer, add 1.312 g of 2,4-bis(4-aminophenyl)-2,3-naphthalene-1-one, after dissolving, add g terephthaloyl chloride, and accelerate stirring until there is climbing Phenomenon, react for 30min, add 2.96g Ca(OH) 2 Neutralize for 20 min to obtain a PPTA copolycondensation solution. The prepared solution was thoroughly washed with water and dried, and the prepared solution was thoroughly washed with water and dried to obtain a novel PPTA resin. The characteristic viscosity measured in 98% concentrated sulfuric acid was 2.8. The PPTA can be dissolved in NMP, or solution-spun.

[0018] The structure of the...

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Abstract

The invention discloses a manufacture method for PPTA that contains 2,4-2(4-amino phenyl)-2, 3dinitrogen phenodiazine-1-detone. It includes the following steps: adding solvent into polymerization reactor, whisking, adding alkali halide, adding 2,4-2(4-amino phenyl)-2, 3dinitrogen phenodiazine-1-detone and p-phenylene diamine; adding paraphthaloyl chloride that has the thickness of 0.3-0.4 mol / l, whisking, keeping reacting at -10-80 degree centigrade for 30-120 minutes; neutralizing by Ca(OH)2 to gain concentrated PPTA solution. The invention has simple technology, low cost, is easy to purity. It could be used in navigation, high capability compounding material, high temperature resistant film and corresponding fabric.

Description

technical field [0001] The invention belongs to the technical field of polymer material science, and relates to the synthesis of high polymers, in particular to a para-polymer containing 2,4-bis(4-aminophenyl)-2,3-naphthalene-1-one structure Polymerization of Aramides (PPTA). Background technique [0002] Para-aramid fiber, namely poly(para-phenyleneterephthalamide) fiber (PPTA for short), is also called aramid fiber 1414 in my country. Due to the high symmetry, regularity and rigid structure of the molecular chain, PPTA has excellent mechanical properties such as high strength and high modulus, as well as low density, high dimensional stability, high temperature resistance, and good affinity with rubber. [0003] However, PPTA resin is insoluble and infusible, and liquid crystal spinning must be carried out in concentrated sulfuric acid. The process is complicated, and the equipment is required to be resistant to strong acid corrosion, making it difficult to process. And ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/14C08K3/16
Inventor 李丛杰李国伟刘兆峰胡盼盼
Owner DONGHUA UNIV
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