Foaming system for closed-cell rigid polyurethane foam

Details Foaming system for closed-cell rigid polyurethane foam Foaming system for closed-cell rigid polyurethane foam

C - Chemistry, Metallurgy

08

J

C08J 9/14 (2006.01)

Patent

CA 2075642

This invention relates to the use of a C2-6 polyfluorocarbon compound containing non chlorine or bromine atoms as physical blowing agent in the preparation of rigid, closed-cell, polymer foams. Use of such blowing agents in the prepara- tion of polyurethane foam provides for a product in which the loss in thermal insulationperformance with time compared to products prepared in absence of such blowing agent is reduced.

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