Polyamidimides having modified end groups

Details Polyamidimides having modified end groups Polyamidimides having modified end groups

1985-08-19

1989-05-09

Kight, John

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

Synthetic resins

From reactant having at least one -n=c=x group as well as...

264204, C08G 7314

Patent

active

048291404

ABSTRACT:
Thermoplastic polyamidimides useful for high temperature coating and having exceptional tensile strength and dimensional stability to heat are produced by condensation of organic polyisocyanates, such as aliphatic, aliphatic-aromatic or aromatic diisocyanates, with cyclic polycarboxylic acid anhydrides and lactams or polyamides carried out at temperatures of from 0.degree. to 400.degree. C. and optionally in a solvent together with from 0.1 to 10 mol-%, preferably from 0.2 to 4 mol-%, of an imidocarboxylic acid corresponding to the following formula ##STR1## wherein R.sub.1 and R.sub.2 represent aliphatic, aliphatic-aromatic or aromatic groups and R.sub.1 carries at least one cyclic anhydride group or carboxyl group in addition to the cyclic imide group.

REFERENCES:
patent: 3238181 (1966-03-01), Anderson et al.
patent: 3658773 (1972-04-01), Zecher et al.
patent: 3682860 (1969-09-01), Yoda et al.
patent: 3752791 (1973-08-01), Zecher et al.
patent: 3817926 (1974-06-01), Pauze et al.
patent: 4088637 (1978-05-01), Zecher et al.
patent: 4549006 (1985-10-01), Zecher et al.

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