Process for preparing polyamideimide resins by direct polymeriza

Details Process for preparing polyamideimide resins by direct polymeriza Process for preparing polyamideimide resins by direct polymeriza

1997-10-23

1999-09-21

Yoon, Tae

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From carboxylic acid or derivative thereof

528170, 528174, 528188, 528352, C08G 6928, C08G 7314

Patent

active

059555688

ABSTRACT:
The disclosure describes a process for preparing a polyamideimide resin having high molecular weight in a simple manner wherein major problems of the prior processes such as low heat resistance and low melt flowability are improved. The process comprises condensation of an aromatic tricarboxylic acid anhydride and an aromatic diamine in a polar solvent, subjecting the resulting diimidedicarboxylic acid to acyl halogenating agent treatment to give an intermediate having good reactivity at low temperature, and then subjecting the latter to direct polymerization by using diamine as a nucleophilic agent to give a polyamideimide resin having high molecular weight. The polyamideimide resin prepared by the present invention can be used as major heat resistant structural material in advanced industries and as paint, sheet, adhesives, sliding material, fiber and film having heat resistance.

REFERENCES:
patent: 3541038 (1970-11-01), Nakano et al.
patent: 3860559 (1975-01-01), Minami et al.
patent: 3920612 (1975-11-01), Stephens
patent: 4016140 (1977-04-01), Morello
patent: 4066631 (1978-01-01), Dimmig
patent: 5104967 (1992-04-01), Sheppard et al.
patent: 5532334 (1996-07-01), Choi et al.
patent: 5587452 (1996-12-01), Koning et al.
Makromol. Chem. Rapid Commun. 2, pp. 649-653 (1981).

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