Low-density rrim using mineral fiber filler

Details Low-density rrim using mineral fiber filler Low-density rrim using mineral fiber filler

C - Chemistry, Metallurgy

08

L

C08L 75/08 (2006.01) B29C 67/24 (2006.01) C08G 18/50 (2006.01) C08J 9/08 (2006.01) C08K 3/34 (2006.01) C08K 7/10 (2006.01)

Patent

CA 2098803

The invention pertains to a low weight, low density rigid polyurethane- polyurea reinforced reaction injection molded (RRIM) part having wollastonite reinforcing fibers dispersed throughout a matrix made by reacting polyisocyanates with a resin containing hydroxy group tertiary amine polyether polyols, a water as a blowing agent, and optionally surfactants, chain extenders, and urethane promoting catalysts. The low density RRIM part using wollastonite and the tertiary amine polyether polyols is a low cost alternative to glass fiber reinforced low density parts, and the part exhibits good mechanical properties and quick demold times.

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