Blowing agents for phenolic resins

Details Blowing agents for phenolic resins Blowing agents for phenolic resins

1996-01-11

1997-01-21

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521 98, 521181, C08J 914

Patent

active

055960227

ABSTRACT:
This invention relates to a process for producing phenolic foams frown phenolic resins using a blowing agent comprising 1,1,1,4,4,4-hexafluorobutane. These blowing agents are much more environmentally friendly than the conventional chlorofluorocarbons and do not adversely affect the properties of the foams produced.

REFERENCES:
patent: 5350777 (1994-09-01), Yuge et al.
Abstract of Japanese Patent 3229736 Oct. 11, 1991.

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