Process for producing dimensionally stable polyolefin foams usin

Details Process for producing dimensionally stable polyolefin foams usin Process for producing dimensionally stable polyolefin foams usin

1984-01-31

1985-07-09

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

264 53, 264DIG5, 521 94, 521 98, 521134, 521149, 521910, C08J 914

Patent

active

045283001

ABSTRACT:
The use in conventional polyolefin extrusion foaming processes of a stability control agent (e.g., stearamide, EAA copolymer, etc.) in conjunction with certain mixed blowing agent systems, the mixed blowing agent system containing 60-95 weight percent of 1-chloro-1,1-difluoroethane or 60-95 weight percent of 1,1-difluoroethane. These compounds have a shorter atmospheric lifetime and lower stability than the saturated chlorofluorocarbons presently used as blowing agents or in blowing agent systems.

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