In situ blown foams

Details In situ blown foams In situ blown foams

1995-07-12

1997-08-05

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521128, 521158, 521163, 521164, 521181, C08J 900

Patent

active

056543450

ABSTRACT:
The invention forms in situ carbon dioxide blown closed cell insulating foams in which blowing is achieved by the evolution of carbon dioxide resulting from partial hydrolysis of polyisocyanate (methyl diphenyl diisocyanate) by water in the resole. The invention uses no additional blowing agent. The reaction is fast and the resulting product has small, closed cells that exhibit long term thermal performance.

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