US Patent 7514502 Thermoplastic resin composition having improved external appearance and excellent weatherability

Patent 7514502 was granted and assigned to LG Chem on April, 2009 by the United States Patent and Trademark Office.

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Patent

Patent attributes

Current Assignee

LG Chem

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75145020

Date of Patent

April 7, 2009

Patent Application Number

105600140

Date Filed

November 6, 2003

Patent Primary Examiner

‌

Jeffrey C Mullis

Patent abstract

The present invention relates to an acrylonitrile (ASA) type thermoplastic resin composition with excellent weatherability and appearance properties, and more particularly, to an acrylate-styrene-acrylonitrile type thermoplastic resin composition comprising a) an acrylate-styrene-acrylonitrile graft copolymer; b) a butadienc-acrylonitrile methylmethacrylate graft copolymer; c) a copolymer of aromatic vinyl compound and vinylcyanide compound; and d) an alkyl acrylate copolymer, which has remarkably improved appearance properties such as scratch resistance, color (color stability) and gloss as well as excellent basic properties and weatherability.

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