Fire resistant foam composed of predominantly amide and imide li

Details Fire resistant foam composed of predominantly amide and imide li Fire resistant foam composed of predominantly amide and imide li

1987-08-31

1988-04-19

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521107, 521168, 521169, 521184, 521185, 521189, C08J 900

Patent

active

047389907

ABSTRACT:
Disclosed is a process for the preparation of a polyamideimide semi-flexible foam wherein a foam precursor is first prepared by heating together a mixture of an organic polyisocyanate, an aromatic polycarboxylic compound and a catalyst comprising a cyclic phosphorus compound, optionally in the presence of a surfactant until at least about 45 percent of the theoretical carbon dioxide has been evolved. The solidified precursor is comminuted and then heated to complete the reaction producing polyamideimide foam.

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