Polymeric foam derived from polymaleic anhydride and its prepara

Details Polymeric foam derived from polymaleic anhydride and its prepara Polymeric foam derived from polymaleic anhydride and its prepara

1983-05-09

1984-02-07

Cockeram, H. S.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521123, 521128, 521131, 521149, 521156, 521157, C08G 1814, C08G 1862, C08G 1816, C08G 1867

Patent

active

044304544

ABSTRACT:
Polymeric foam compositions, useful as insulating material are obtained from the reaction of polymaleic anhydride with a hydroxyl-containing compound like ethylene glycol or its derivatives, in the presence of an organic isocyanate. Hydroxyl-containing compounds suitable for reaction with polymaleic anhydride include C.sub.2 -C.sub.10 diols, C.sub.3 -C.sub.6 trilos, C.sub.4 -C.sub.5 tetraols and their derivatives.

REFERENCES:
patent: 3359246 (1967-12-01), Berry
patent: 3374209 (1968-03-01), Hay et al.
patent: 3383351 (1968-05-01), Stamberger
patent: 3523093 (1970-08-01), Stamberger
patent: 3620987 (1971-11-01), McLaughlin et al.
patent: 3620990 (1971-11-01), Hazen et al.
patent: 3833523 (1974-09-01), Tariel et al.
patent: 3887526 (1975-06-01), Lancelot et al.
patent: 4198488 (1980-04-01), Drake et al.
patent: 4278627 (1981-07-01), Kajimura et al.

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