Method for preparing polymeric foams and chemical...

Details Method for preparing polymeric foams and chemical... Method for preparing polymeric foams and chemical...

C - Chemistry, Metallurgy

08

G

C08G 18/22 (2006.01) C08G 18/30 (2006.01) C08G 18/32 (2006.01) C08G 18/38 (2006.01) C08J 9/00 (2006.01) C08J 9/02 (2006.01) C08J 9/14 (2006.01)

Patent

CA 2060530

ABSTRACT A method for the preparation of rigid foams by reacting an organic polyisocyanate with an isocyanate-reactive material in the presence of a blowing promoter characterised in that the isocyanate-reactive material comprises at least one isocyanate-reactive cyclic carbonate or isocyanate-reactive cyclic urea, the reaction being performed in the presence of an inert insoluble organic liquid which is present as the disperse phase of an emulsion or a microemulsion, and in the presence of a metal salt catalyst. 0801at1/92/av - BOT

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