Process for rigid polyurethane foams

Details Process for rigid polyurethane foams Process for rigid polyurethane foams

C - Chemistry, Metallurgy

08

J

C08J 9/14 (2006.01)

Patent

CA 2300890

Process for preparing rigid polyurethane or urethane-modified polyisocyanurate foam using as blowing agent a mixture containing from 1 to 50 mole % 1,1,1,3,3- pentafluoropropane and from 50 to 99 mole % isopentane and/or n-pentane.

L'invention porte sur un procédé de préparation d'une mousse rigide de polyuréthane ou de polyisocyanurate modifiée par uréthane, procédé utilisant comme agent de soufflage un mélange contenant entre 1 et 50 % en moles de 1,1,1,3,3-pentafluoropropane, et entre 50 et 99 % en moles d'isopentane et/ou de n-pentane.

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