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US 6,476,080 B2Granted
Blowing agent compositions containing hydrofluorocarbons and a low-boiling alcohol and/or low-boiling carbonyl compound
AssigneeThe Dow Chemical Company
InventorsJohn D. Duffy, Warren H. Griffin
Life of this patent
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Abstract
The present invention relates to blowing agent compositions that contain at least one hydrofluorocarbon having a boiling point of 30° C. or higher and lower than about 120° C., at least one hydrofluorocarbon having a boiling point lower than 30° C., and at least one component selected from low-boiling alcohols and low-boiling carbonyl compounds. The present invention also relates to processes for preparing polymeric foam using such blowing agent compositions, as well as polymeric foams and foamable polymer compositions containing such blowing agent compositions.
Claims11
A blowing agent composition comprising:
- (a) at least one hydrofluorocarbon having a boiling point of 30° C. or higher and lower than about 120° C;
- (b) at least one hydrofluorocarbon having a boiling point lower than 30° C;
- and
- (c) at least one component selected from low-boiling alcohols and low-boiling carbonyl compounds.
1 more element
Dependencies are inferred from the claim text.