Polyamideamic acid resin prepolymers, high heat resistant polyam

Details Polyamideamic acid resin prepolymers, high heat resistant polyam Polyamideamic acid resin prepolymers, high heat resistant polyam

1996-01-16

1998-10-20

Hampton-Hightower, P.

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

Synthetic resins

From carboxylic acid or derivative thereof

528128, 528173, 528220, 528229, 528310, 528322, 521184, 521185, 521189, C08G 7310

Patent

active

058247661

ABSTRACT:
A polyamideamic acid resin prepolymer represented by formula A having isophorone diamine as one of monomers, ##STR1## in which k, l, m and n are integer of 1 or more, respectively, and ##EQU1## --R-- is at least one group selected from the group consisting of ##STR2## --R'-- is a cis- and trans-conformational mixture of ##STR3## high heat resistant polyamideimide foam produced therefrom, and processes for producing them are disclosed.

REFERENCES:
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patent: 4115372 (1978-09-01), Onder
patent: 4296208 (1981-10-01), Gagliani et al.
patent: 4305796 (1981-12-01), Gagliani et al.
patent: 4332656 (1982-06-01), Gagliani et al.
patent: 4543368 (1985-09-01), Smearing et al.
patent: 4738990 (1988-04-01), Nelb, II et al.

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