C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 9/14 (2006.01) C08J 9/12 (2006.01)
Patent
CA 2431694
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 120 ~C, at least one hydrofluorocarbon having a boiling point lower than 30 ~C, and at leat 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.
La présente invention concerne des compositions d'agent d'expansion contenant au moins un hydrocarbure fluoré présentant un point d'ébullition supérieur ou égal à 30· C et inférieur à 120· C, au moins un hydrocarbure fluoré présentant un point d'ébullition inférieur à 30· C, et au moins un constituant sélectionné parmi des alcools à point d'ébullition bas et des composés carbonyl à point d'ébullition bas. La présente invention concerne également des procédés de préparation de mousse polymére employant de telles compositions d'agent d'expansion, ainsi que des mousses polyméres et des compositions polymères expansibles contenant de telles compositions d'agent d'expansion.
Duffy John D.
Griffin Warren H.
Dow Global Technologies Inc.
Smart & Biggar
LandOfFree
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