Process for the production of rigid polyurethane moldings...

Details Process for the production of rigid polyurethane moldings... Process for the production of rigid polyurethane moldings...

B - Operations, Transporting

29

C

B29C 44/04 (2006.01) C08J 9/14 (2006.01) C08J 9/34 (2006.01)

Patent

CA 2220803

The polyurethane moldings produced according to the invention from organic polyisocyanates and certain polyols in the presence of water and in the presence of cyclopentane and/or hydrocarbon mixtures of a boiling range of 45°C to 80°C, preferably of 45°C to 75°C, as the blowing agents have particularly high surface hardness combined with a low bulk density, in particular at low temperatures, as a consequence of which they are preferably suitable for applications in the consumer, electrical or automotive sectors.

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