C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
18/691
C08G 18/66 (2006.01) C08G 18/48 (2006.01)
Patent
CA 1171622
RIM ELASTOMERS WITH IMPROVED HEAT DISTORTION AND TEAR PROPERTIES (D#75, 797-F) ABSTRACT OF THE DISCLOSURE The invention covers a method for making reaction injection molded polyurethanes of improved properties. The elastomeric products having superior heat distortion and tear properties comprise the reaction product of an aromatic polyisocyanate, a high molecular weight polyol and a chain extending agent. Said polyol providing said improved properties is a poly(oxybutyleneoxyethylene) glycol having a molecular weight range of about 2,000-6,000. The polyurethane elastomer is prepared by injecting the above three agents through a RIM head into a mold cavity of the desired configuration. Reaction injection molded elastomers are useful as molded articles of commerce including, but not limited to, vehicle body parts. -I-
382332
Cuscurida Michael
Dominguez Richard J.g.
Rice Doris M.
Smart & Biggar
Texaco Development Corporation
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