MODIFIER FOR THE FRICTION COEFFICIENT OF RUBBER COMPOUNDS

摘要

Disclosed are formulations of rubbers arising from a surprising finding of the effects of addition of compounds formed between certain metal compounds and polyhydric alcohols which contain terminal -CH2OH group or groups connected to an adjacent -COH group to rubber or rubber-like compounds. More specifically disclosed are methods of modifying the friction coefficient of rubber and the adhesion to metal characteristics, and to the rubber so modified. The compounds disclosed have a metal bonded via an oxygen residue of these hydroxyl groups. Polyhydroxy alcohols that might be used to form the compounds are, for example, the alcohols mannitol, xylitol, erythritol and isomers, other polyhydric alcohols such as for example ethanediol or a propanediol or propanetriol or 1,2 butanediol or 1,2,3 butanetriol and polyvinyl alcohols and similar compounds or substituted compounds such as 2-stearo-1,3-propandiol and similar compounds. Metals of metal oxygen-containing compounds which may be combined or bonded as described with the hydroxyl groups of suitable polyhydroxy organic compound are for example, cobalt, iron, zinc, calcium, magnesium, bismuth, nickel and/or chromium. The metal oxygen-containing compounds may be oxides, hydroxides, organo-metal compounds such as stearates and/or the oxy-salts of these metals, for example carbonates.