The Goodyear & Tire Rubber Company

James B Pyke

Richard G Bauer

Martin Paul Cohen

Donald J Burlett

Pawan K Handa

This invention discloses a unique blend of polyether ester amide and sulfur vulcanized rubber having higher modulus than the rubber component without sacrificing other properties of the rubber component.

Polyether ester amide-sulfur vulcanized rubber compounds

It is desirable to increase the modulus of rubbers utilized in a wide variety of applications. This invention discloses a technique for modifying rubbers to improve their modulus without sacrificing other properties. The subject invention more specifically relates to a process for preparing a rubber composition having a high modulus which comprises reacting maleic anhydride with at least one polydiene rubber and at least one nylon.

High modulus rubber composition

It is often desirable to increase the modulus of rubbers utilized in a wide variety of applications. This invention discloses a technique for modifying rubbers to improve their modulus without sacrificing other properties. By utilizing the process of this invention, rubber compositions having increased modulus are prepared by grafting polyester onto rubber. This can be accomplished by reacting a polydiene rubber with a thioacid or maleic anhydride and subsequently with the polyester. It is also possible to prepare such polyester modified rubber compositions by reacting an epoxidized rubber with the polyester.

Polyester reinforced rubber

It is desirable to increase the modulus of rubbers utilized in a wide variety of applications. This invention discloses a technique for modifying rubbers to improve their modulus without sacrificing other properties. The subject invention more specifically relates to a process for preparing a rubber composition having a high modulus which comprises reacting at least one epoxidized rubber with from about 2 phr to about 55 phr of at least one nylon at a temperature which is within the range of about 140.degree. C. to about 300.degree. C.

It is desirable to increase the modulus of rubbers utilized in a wide variety of applications. This invention discloses a technique for modifying rubbers to improve their modulus without sacrificing other properties. The subject invention more specifically relates to a process for preparing a rubber composition having a high modulus which comprises reacting at least one thio acid with at least one polydiene rubber and at least one nylon.

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Akron, OH, United States of America

James B Pyke