Single step bulk process for high impact polyester...

C - Chemistry – Metallurgy – 08 – L

Patent

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400/4508, 400/46

C08L 67/00 (2006.01) C08G 81/02 (2006.01) C08J 3/00 (2006.01) C08J 3/22 (2006.01) C08L 67/02 (2006.01) C08L 77/00 (2006.01)

Patent

CA 1333431

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.

559124

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