The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 20, 1995
Filed:
Oct. 17, 1994
Hoechst AG, , DE;
Abstract
Preparation of vulcanizable rubber mixtures and vulcanized compounds thereof having improved adhesion to reinforcing supports based 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 processed in an easy 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.