Blowing agent for expandable polymeric foams

Plastic and nonmetallic article shaping or treating: processes – Pore forming in situ – By gas forming or expanding

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Details

264DIG5, 521 60, 521139, C08J 914, B29C 6722

Patent

active

049236547

ABSTRACT:
A volatile foaming agent for thermoplastic foam is a blend of about 65 to 75 weight percent chlorodifluoro-methane and from about 25 to 35 weight percent pentane.

REFERENCES:
patent: 4528300 (1985-07-01), Park
patent: 4727093 (1988-02-01), Allen et al.

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