Impact strength modifiers for thermoplastic polymers

U.S. Patent Number: 5332782

Abstract: An acrylic additive polymer containing free carboxylic acid groups is added to a core-shell impact-property modifier containing free carboxylic acid groups to produce an improved physical-property modifier for polyamide resins.

Inventors: Liu; Wan-Li (Levittown, PA), Liwak; Susan M. (Langhorne, PA)

Assignee: Rohm and Haas Company (Philadelphia, PA)

Application Number: 08/023,732

Issued: 1994-07-26

Expired: 2006-07-26

Classes: 525/66 ; 525/179; 525/183

Field of search: 525/179,66,183

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