The Goodyear & Tire Rubber Company

Robert J Brown

Martin Paul Cohen

Norbert Majerus

Richard M Scriver, Jr

Aramid-reinforced elastomers, including rubber, in which the elastomer is reinforced with aramid in the form of short, discontinuous, fibrillated fibers, are disclosed. The fibers are composed of a trunk portion having a length of about 0.2-5 mm, a diameter of about 0.005-0.02 mm (5-20 micrometers), and an aspect ratio greater than 100, and numerous fibrils extending outwardly from the trunk and having diameters substantially smaller than the trunk diameter. The surface area of the fibers is from about 4 to about 20 square meters per gram, and is about 30 to 60 times the equivalent surface area of fibers in the form of rod having the same diameter distribution as that of the trunks of the fibers herein, but with no fibrils. The fibers are oriented. Incorporation of the fibers results in substantial increase in stiffness and modulus. Loading of aramid fibers is typically about 0.2-20 phr. Vulcanized reinforced elastomers of this invention are especially suitable in pneumatic tires, and most particularly as carcass plies and reinforcing belts between the tread and carcass in radial tires.

Rubber containing aramid pulp reinforcement

The present invention relates to a cure system for a sulfur vulcanizable rubber. The cure system comprises:

Cure system for sulfur vulcanizable rubber

There is disclosed laminates containing an adhesive blend, a rubbery adhesive cement as well as a method of using said cement, and products which can be prepared from the use of said cement. The rubbery adhesive cement comprises:

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Cuyahoga Falls, OH, United States of America

Robert J Brown