1,1,1-Trifluoro-2-chloroethane as blowing agent for polyurethane

Details 1,1,1-Trifluoro-2-chloroethane as blowing agent for polyurethane 1,1,1-Trifluoro-2-chloroethane as blowing agent for polyurethane

1978-08-08

1979-12-04

Welsh, Maurice J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521131, C08G 1814

Patent

active

041773322

ABSTRACT:
In the production of a foamed synthetic material by the reaction of starting materials which undergo a polymerization, polycondensation or polyaddition reaction to produce a high molecular weight synthetic material in the presence of a blowing agent, e.g. a polyurethane, or by foaming an unfoamed thermoplastic synthetic material by means of a blowing agent, the improvement which comprises employing 1,1,1-trifluoro-2-chloroethane as the blowing agent, optionally in admixture with 1,1-difluoro-2-chloroethane.

REFERENCES:
patent: 3183192 (1965-05-01), Bauer
patent: 3583921 (1971-06-01), Healy et al.
patent: 4076644 (1978-02-01), Burnt et al.

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