Azeotropic compositions of 1,1,1,4,4,4-hexafluorobutane and 2-me

Details Azeotropic compositions of 1,1,1,4,4,4-hexafluorobutane and 2-me Azeotropic compositions of 1,1,1,4,4,4-hexafluorobutane and 2-me

1995-03-24

1996-07-02

Seidleck, James J.

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

Synthetic resins

Cellular products or processes of preparing a cellular...

203 67, 203 68, 252364, 252350, 521159, 521164, 521167, 521170, 521174, 510177, 510408, C08J 914, C11D 750, C23G 5024, C23G 5028

Patent

active

055322832

ABSTRACT:
Azeotropic compositions made up of from about 64 to about 80% by weight of 1,1,1,4,4,4-hexafluorobutane and from about 20 to about 36% by weight of 2-methyl butane have been found to be particularly useful as blowing agents for the production of polyurethane foams.

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Lamberts, 1,1,1,4,4,4 Hexafluorobutane, a New Non-Ozone-Depleting Blowing Agent for Rigid PUR Foams, Polyurethanes World Congress 1991-Sep. 24-26, pp. 734-739.

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