Uniroyal Inc.

Vincent Russell Landi

Richard W Tomlinson

Eliot K Easterbrook

Solution halogenation of EPDM (rubbery terpolymer of ethylene, an alpha mono-olefin, and a nonconjugated diene) in the presence of an epoxy compound such as epoxidized soybean oil with or without a poly(alkylene ether) glycol yields a halogenated EPDM of excellent viscosity stability and limited gel content.

Halogenation of EPDM in solution in the presence of epoxide and,

Rubber, e.g., butadiene-acrylonitrile copolymer rubber, in readily friable or free flowing powdered form is prepared by halogenating (e.g., chlorinating) the rubber in particulate form in an aqueous medium. Sodium hypochlorite/acid or chlorine water may be used as the chlorinating agent. Preferred bound chlorine content of the treated rubber is at least 0.1%.

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Cheshire, CT, United States of America

Vincent Russell Landi