High modulus rubber composition

Details High modulus rubber composition High modulus rubber composition

C - Chemistry, Metallurgy

08

L

400/5511

C08L 9/00 (2006.01) C08L 75/04 (2006.01)

Patent

CA 2030889

Abstract of the Disclosure HIGH MODULUS RUBBER COMPOSITION It is desirable to increase the modulus of rubbers utilized in a wide variety of applications. This invention discloses a technique for preparing high modulus rubber compositions. By utilizing this technique, high modulus can be attained without sacrificing other properties, such as hysteresis. The subject invention more specifically relates to a process for preparing a high modulus rubber composition which comprises: (1) polymerizing at least one diisocyanate with at least one member selected from the group consisting of diols and diamines in a polymer cement of a rubbery elastomer under conditions which result in the formation of a rubber cement having the crystalline polymer dispersed therein; and (2) recovering the high modulus rubber composition from the rubber cement.

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