Single step bulk process for high impact polyester masterbatches

Details Single step bulk process for high impact polyester masterbatches Single step bulk process for high impact polyester masterbatches

1990-08-07

1993-09-14

Short, Patricia A.

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

Synthetic resins

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

525 64, 525168, 525177, 525181, 525184, C08L 6702, C08L 7700

Patent

active

052449726

ABSTRACT:
A molding composition having improved toughness and impact strength comprising 60-90 percent by weight of a matrix resin in the form of a polyester or polyamide resin, reacted with 40-10 percent by weight of a rubber formed by copolymerization of ethylene, one or more mono-olefins, and preferably one or more polyenes, and an ester of an alpha, beta-unsaturated acid having an epoxide functionality on the alkoxy portion. The composition is prepared by forming a masterbatch containing the backbone rubber, a monomer having the epoxide functionality, a catalyst and a portion of the matrix resin of the final composition in a single step bulk process, and thereafter blending the masterbatch with the remainder of the matrix resin.

REFERENCES:
patent: 3769260 (1973-10-01), Segal
patent: 3862265 (1975-01-01), Steinkamp
patent: 3868433 (1975-02-01), Bartz
patent: 3884882 (1975-05-01), Caywood
patent: 3886227 (1975-05-01), Van Brederode
patent: 3953541 (1976-04-01), Fuji
patent: 4026967 (1977-05-01), Flexman
patent: 4172859 (1979-10-01), Epstein
patent: 4612155 (1986-09-01), Wong

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