Production of cellular polyurethane moldings by sintering

Details Production of cellular polyurethane moldings by sintering Production of cellular polyurethane moldings by sintering

C - Chemistry, Metallurgy

08

J

18/668

C08J 9/24 (2006.01) C08J 9/10 (2006.01)

Patent

CA 2036125

-31- ABSTRACT OF DISCLOSURE The present invention relates to a process for the production if cellular polyurethane moldings, preferably sheet- like materials, having a thickness of 25 mm which can have, on one or more sides, a smooth, essentially compact surface, by sintering a mixture which contains A) one or more pulverulent thermoplastic polyurethanes which expediently have a melt flow index (MFI) of from 50 to 350 at 190°C and a load of 212 N and have a Shore A hardness of from 60 to 98, and B) one or more blowing agents which are solid at 23°C, at elevated temperature, usually at from 180 to 280°C, using a mold.

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