Styrenic foam blowing agent composition

Details Styrenic foam blowing agent composition Styrenic foam blowing agent composition

1990-01-18

1990-09-11

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 98, 521146, 521910, C08J 914

Patent

active

049563955

ABSTRACT:
The invention comprises a blowing agent composition useful in the production of insulating styrenic foams comprising ethylchoride, propane and a halogenated ethane selected from the group consisting of 1,1,1-trifluoro-2-fluoroethane, 1-chloro-1,1-difluoro-2,2,2-trifluoroethane 1-chloro-1,1-difluoroethane (FC-142b) and mixtures thereof. The invention further comprises a method to produce dimensionally stable insulating styrenic foams using the blowing agent composition. The blowing agent composition has a significantly reduced ozone reactivity potential compared to previous commercial styrenic foam blowing agents.

REFERENCES:
patent: 3640916 (1972-02-01), Dill
patent: 3960792 (1976-06-01), Nakamura
patent: 4308352 (1981-12-01), Knons
patent: 4438224 (1984-03-01), Suh
patent: 4451417 (1984-05-01), Akiyama et al.
patent: 4528300 (1985-07-01), Park
patent: 4640933 (1987-02-01), Park
patent: 4771080 (1988-09-01), Ibuki et al.

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