Borg-warner Chemicals, Inc.

David V Howe

Thomas S Grant

An improved method for carboxylating styrenic resins and particularly impact-modified styrenic resins such as ABS resins, by melt-processing a mixture comprising the styrenic resin, an ethylenically-unsaturated carboxylic compound, and, optionally, a free-radical generator.

Method for preparing carboxylated styrenic resins

An improved method for making alloys of styrenic resins and polyamides. The styrenic resin is first melt-processed with an ethylenically-unsaturated carboxylic compound, optionally in the presence of a free-radical generator, then combined with the polyamide under melt-processing conditions. The compositions remain thermally-processable and generally exhibit good impact properties with little or no delamination.

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Parkersbrug, WV, United States of America

David V Howe