Polyurethane bonded to cured rubber containing a diene polyol

Details Polyurethane bonded to cured rubber containing a diene polyol Polyurethane bonded to cured rubber containing a diene polyol

C - Chemistry, Metallurgy

08

J

18/129, 117/144

C08J 7/12 (2006.01) C08J 5/12 (2006.01) C08L 9/00 (2006.01) C08L 21/00 (2006.01)

Patent

CA 1254085

Abstract of the Disclosure POLYURETHANE BONDED TO CURED RUBBER CONTAINING A DIENE POLYOL A method of preparing a composite of polyurethane bonded to the surface of a cured rubber substrate and the resulting composite. The method requires the rubber substrate to contain an hydroxyl terminated polybutadiene polyol. The method is practiced by first applying to a cleaned, cured rubber surface containing the polybutadiene polyol a coating of cyanuric acid followed by an additional coating of a phenol formaldehyde resin and then applying a liquid polyurethane reaction mixture which is cured to form the resultant composite. The invention is particularly directed to the preparation of a tire comprised of a polyurethane carcass applied to a cured rubber tread and to a tire comprised of a polyurethane tread applied to a cured rubber carcass.

474794

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