Low density rigid reinforced polyurethanes and a process for...

Details Low density rigid reinforced polyurethanes and a process for... Low density rigid reinforced polyurethanes and a process for...

C - Chemistry, Metallurgy

08

L

C08L 75/08 (2006.01) C08G 18/48 (2006.01) C08G 18/72 (2006.01) C08J 5/08 (2006.01) C08K 7/14 (2006.01)

Patent

CA 2599099

Fiber-reinforced polyurethanes having densities no greater than 0.9 g/cc which are suitable for use as automotive components are produced from a polyurethane-forming reaction mixture in which carbon dioxide is dissolved in one or both of the reaction components. The amount of dissolved carbon dioxide is from 0.2 to 2.0 g/l. The isocyanate-reactive component is a polyol having a functionality of from 3 to 8 and a hydroxyl number of at least 600. Any fibrous material may be used but glass fiber, particularly glass fibers having lengths from 12.5 to 100 mm are particularly preferred.

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