Rubber mixtures and vulcanized compounds prepared therefrom

Details Rubber mixtures and vulcanized compounds prepared therefrom Rubber mixtures and vulcanized compounds prepared therefrom

C - Chemistry, Metallurgy

08

L

400/1106, 18/129

C08L 7/00 (2006.01) B29D 29/00 (2006.01) B29D 30/00 (2006.01) C08G 16/02 (2006.01) C08J 5/10 (2006.01) C08L 9/00 (2006.01) C08L 21/00 (2006.01)

Patent

CA 2034251

Abstract of the discloure: Rubber mixtures and vulcanized compounds prepared there- from having improved adhesion to reinforcing supports Preparation of vulcanizable rubber mixtures and vul- canized compounds thereof having improved adhesion to reinforcing supports baaed on steel cord and textile fibers, in which effective amounts of modified novolaks are added to the rubber mixtures as adhesion promotors, which are prepared by simultaneous reaction of polyhydric phenols with aldehydes and unsaturated hydrocarbons with acid catalysis at elevated temperature and do not contain any troublesome proportions of free starting phenols. Rubber mixtures according to the invention can be proces- sed in an easy and advantageous manner without liberating toxic substances which might be detrimental to persons working in processing and/or to the environment. Rubber mixtures according to the invention which can be prepared, processed and vulcanized by known methods by thorough mixing of the components are highly suitable for the manufacture of industrial rubber articles containing reinforcing supports based on steel cord and textile fibers such as, for example, tubings, fan belts, conveyor belts and tires, the resulting vulcanized compounds having excellent adhesion properties to the reinforcing supports mentioned in combination with a surprisingly good constancy of properties upon exposure to moisture.

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