Patent ID: 8633339

Claim:
An open cell, closed cell or multimodal cell polyisocyanate-based foam prepared by reacting at least one organic polyisocyanate with at least one polyol in the presence of a blowing agent, wherein said blowing agent comprises a fluorocarbon or hydrofluorocarbon selected from the group consisting of: (i) a hydrofluorocarbon having the formula E- or Z—R 1 CH═CHR 2 , wherein R 1 and R 2 are, independently, C 1 to C 6 perfluoroalkyl groups; and (ii) a fluorocarbon or hydrofluorocarbon selected from the group consisting of CF 3 CF═CHCF 3 , CF 3 CH═CHCF 3 , CHF 2 CH═CHCF 3 , (CF 3 ) 2 C═CHCF 3 , CF 3 CF═CHCF 2 CF 3 , CF 3 CH═CFCF 2 CF 3 , (CF 3 ) 2 CFCF═CHCF 3 , CF 3 CF═CFCH 3 , CH 3 CF═CHCF 3 , CHF 2 CF═CFCF 2 CF 3 , CF 3 CF═CFCF 2 CHF 2 , CF 3 CF═CFCHFCF 3 , CF 3 CF═C(CF 3 )(CH 3 ), CH 2 FCH═C(CF 3 ) 2 , CH 3 CF═C(CF 3 ) 2 , (CF 3 ) 2 C═CHC 2 F 5 , (CF 3 ) 2 CFCF═CHCF 3 , (CF 3 ) 2 C═C(CH 3 )(CF 3 ), CF 3 CF═C(CH 3 )CF 2 CF 3 , CF 3 CH═CHCH(CF 3 ) 2 , (CF 3 ) 2 C═CHCF 2 CH 3 , CF 3 CF 2 CF═CFC 2 H 5 , CF 3 CF═CHCH(CF 3 )(CH 3 ), (CF 3 ) 2 C═CFC 2 H5, cyclo-CF 2 CF 2 CF 2 CH═CH—, cyclo-CF 2 CF 2 CH═CH—, CF 3 CF 2 CF 2 CH═CHCH 3 , cyclo-CF 2 CF 2 CF═CF—, cyclo-CF 2 CF═CFCF 2 CF 2 —, cyclo-CF 2 CF═CFCF 2 CF 2 CF 2 , CF 3 CH═CHCF 2 CF 3 , CF 3 CF 2 CH═CHCF 2 CF 3 , CF 3 CH═CHCF 2 CF 2 CF 3 , CF 3 CH═CFCF 2 CF 2 C 2 F 5 , CF 3 CF═CHCF 2 CF 2 C 2 F 5 , CF 3 CF 2 CH═CFCF 2 C 2 F 5 , CF 3 CF 2 CF═CHCF 2 C 2 F 5 , C 2 F 5 CF 2 CF═CHCH 3 , C 2 F 5 CF═CHCH 3 , (CF 3 ) 2 C═CHCH 3 , CF 3 C(CH 3 )═CHCF 3 , CHF 2 CF═CFCF 3 , CH 2 FCF═CFCF 3 , CHF 2 CH═CFCF 3 , CF 3 CH═CFCHF 2 , CHF 2 CF═CFCHF 2 , CH 2 CF═CFCF 3 , CH 2 FCH═CFCF 3 , CF 3 CH═CFCH 2 F, —CHF 2 CF═CHCHF 2 , CF 3 CF═CHCH 3 , CF 3 CBr═CFCF 3 , CH 3 CBr═CHCF 3 , CF 3 CBr═CHCH 3 , CF 3 CF═CBrCF 2 CF 3 , E-CHF 2 CBr═CFC 2 F 5 , Z—CHF 2 CBr═CFC 2 F 5 , (CF 3 ) 2 CFCBr═CH 2 , CHBr═CF(CF 2 ) 2 CHF 2 , and (CF 3 ) 2 C═CHCH 2 Br, and wherein the global warming potential of said blowing agent is less than 100, and wherein the solubility of said blowing agent in said polyol is such that they form an emulsion when mixed.