Patent ID: 9556303
Date: 2017-01-31
CPC Classifications: C08G,C08J

Claim:
1. A storage stable foamable composition that has been stored for a period of at least two months comprising: a. a hydrohaloolefin blowing agent consisting essentially of transHCFO-1233zd, or transHFO-1234ze, or combinations of these, b. one or more polyols, c. one or more surfactants, and d. a catalyst system comprising at least a zinc metal and/or at least a bismuth metal, and at least one amine catalyst selected from n-metheyldicyclohexyl-amine, methyl(n-methylamino b-sodium acetate nonylphenol) 2-and combinations of these, wherein said foamable composition after said two month storage period has no substantial increase in gel time.