High modulus blend of poly(.alpha.-amino acid) in rubbery elasto

Details High modulus blend of poly(.alpha.-amino acid) in rubbery elasto High modulus blend of poly(.alpha.-amino acid) in rubbery elasto

1991-08-02

1994-02-01

Carrillo, Ana L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525183, 525184, C08L 7702

Patent

active

052832830

ABSTRACT:
It is frequently desirable to increase the modulus of rubbers which are utilized in a wide variety of applications. This invention discloses a technique for increasing the modulus of rubbers. By utilizing this technique, high modulus rubber compositions can be attained without sacrificing other properties, such as elongation and hysteresis. This invention more specifically relates to a process for preparing a high modulus rubber composition which comprises: (1) polymerizing at least one N-carboxyl-.alpha.-amino acid anhydride in a polymer cement of a rubbery elastomer under conditions which result in the formation of a rubber cement having the poly(.alpha.-amino acid) dispersed therein; and (2) recovering the high modulus rubber composition from the rubber cement. The high modulus rubber compositions made by this technique are comprised of at least one rubbery elastomer and at least one poly(.alpha.-amino acid).

REFERENCES:
patent: 3582397 (1971-06-01), Shibata et al.
patent: 3914479 (1975-10-01), Yamagata et al.
patent: 4501867 (1985-02-01), Ueno et al.
patent: 4686262 (1987-08-01), Binsack et al.
patent: 4694042 (1987-09-01), McKee et al.
patent: 4708987 (1987-11-01), Hergenrother et al.

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