Flame-retardant, high-temperature resistant foams of polyimides

Details Flame-retardant, high-temperature resistant foams of polyimides Flame-retardant, high-temperature resistant foams of polyimides

1991-06-24

1992-10-06

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

C08J 902

Patent

active

051532344

ABSTRACT:
There are disclosed flame-retardant, high-temperature resistant polyimide foams having the general formula ##STR1## The foams have an elevated thermostability and, determined in a thermogravimetric analysis at a heating rate of 20 degrees per minute, have a maximum weight loss between 550.degree. and 650.degree. C. The overall weight loss up to a heating temperature of 350.degree. C. amounts to less than 3% by mass.

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