The Goodyear & Tire Rubber Company

Michael R Ambler

Gary Lee Burroway

Richard R Lattime

Edward Wanca

Rubber chemicals, such as accelerators, are often sold in rodform binders. In order for such rods of a rubber chemical to maintain their structural integrity a polymeric binder is utilized. An improved binder for chemical agents is disclosed herein. This binder is a blend of a graft copolymer and a random copolymer.

Binder for chemical agents

There is disclosed a process for blending rubber latices with carbon black or other reinforcing pigments which comprises the use of a 60/40 to 40/60 butadiene/methacrylic acid latex which has been converted to a water soluble polymer through treatment with an alkali metal hydroxide. Said converted butadiene/methacrylic acid latex is then combined with dry carbon black at a level of 1 to 2 percent butadiene/methacrylic acid dispersing latex solids based on weight of the carbon black. The blended carbon black butadiene/methacrylic acid dispersion is added to rubber latices prior to coagulation. More specifically, this invention is concerned with a carbon black dispersion and its addition to a rubber latex.

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Stow, OH, United States of America

Michael R Ambler