Intermediate, copolymer resin and production thereof

Details Intermediate, copolymer resin and production thereof Intermediate, copolymer resin and production thereof

1981-08-06

1982-07-06

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 21, 528 23, 528 28, 528 38, 556419, 556423, C08G 7704

Patent

active

043384269

ABSTRACT:
A polyimide-isoindroquinazolinedione-silicone copolymer resin produced by reacting (a) a diaminoamide, (b) a diaminosiloxane, (c) a diamine, and (d) a tetracarboxylic acid dianhydride to give a polyamide acid-silicone intermediate, which is then subjected to dehydration and ring closure, is excellent particularly in adhesiveness, moisture resistance, wear resistance and heat resistance. The polyamide acid-silicone intermediate is stable in the form of a varnish and usuable commercially as a raw material for the polyimide-isoindroquinazolinedione-silicone copolymer resin.

REFERENCES:
patent: 3740305 (1973-06-01), Hoback et al.
patent: 4017340 (1977-04-01), Yerman
patent: 4030948 (1977-06-01), Berger
patent: 4051163 (1977-09-01), Berger et al.
patent: 4139547 (1979-02-01), Berger

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