Process for producing filled polyurethane elastomers

Details Process for producing filled polyurethane elastomers Process for producing filled polyurethane elastomers

C - Chemistry, Metallurgy

08

L

C08L 75/04 (2006.01) B27M 1/00 (2006.01) C08G 18/16 (2006.01)

Patent

CA 2248052

This invention relates to a process for producing filled polyurethane elastomers, and more particularly to a process for producing highly filled polyurethane elastomers in which resin solid separation is substantially reduced. The separation rate of the solid particulate fillers contained in a filled polyol resin is significantly reduced, and the subject process can be optimized to lower the viscosity of the uncured liquid reaction mixture prior to curing same to form a solid, thereby substantially non-cellular filled polyurethane elastomer. The above-described benefits can be accomplished by reacting together a three- component polyurethane system comprising (a) a filled polyether polyol resin having a particulate filler material dispersed therein, (b) a polyisocyanate, and (c) a catalyst solution for reacting (a) and (b) to form said filled polyurethane elastomer.

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