The University of Akron

Faith Howard

Aubert Y Coran

A method of recycling vulcanized rubber comprising the steps of grinding vulcanized rubber into particles having an average diameter in the range from about 50 .mu.m to about 1.2 mm, and adding the ground tire rubber to a low-modulus binder to form a thermoplastic rubbery composition comprising from about 10 to about 80 parts by weight of the low-modulus binder including from about 25 to about 75 parts by weight of a crystalline polyolefin resin, and from about 25 to about 75 parts by weight of a binder rubber, wherein the rubber is vulcanized by dynamic vulcanization to form fine particles the binder resin, and from about 90 to about 20 parts by weight of ground vulcanized rubber wherein said step of adding the ground rubber occurs at a temperature above the melting point of the crystalline polyolefin resin.

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Beachwood, OH, United States of America

Faith Howard