Invention Grant
US08383726B2 Impact resistance improver, thermoplastic resin composition, shaped article and method for producing graft copolymer
有权
耐冲击改性剂，热塑性树脂组合物，成型制品及接枝共聚物的制造方法
- Patent Title: Impact resistance improver, thermoplastic resin composition, shaped article and method for producing graft copolymer
- Patent Title (中): 耐冲击改性剂，热塑性树脂组合物，成型制品及接枝共聚物的制造方法
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Application No.: US12439089Application Date: 2007-08-29
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Publication No.: US08383726B2Publication Date: 2013-02-26
- Inventor: Osamu Okunaka , Hiroyuki Nishii , Takashi Shouji , Keiji Nakamura , Tae Uk Kim , Byung Choon Lee
- Applicant: Osamu Okunaka , Hiroyuki Nishii , Takashi Shouji , Keiji Nakamura , Tae Uk Kim , Byung Choon Lee
- Applicant Address: JP Tokyo KR Gumi-si
- Assignee: Mitsubishi Rayon Co., Ltd.,Cheil Industries Inc.
- Current Assignee: Mitsubishi Rayon Co., Ltd.,Cheil Industries Inc.
- Current Assignee Address: JP Tokyo KR Gumi-si
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2006-231776 20060829
- International Application: PCT/JP2007/066734 WO 20070829
- International Announcement: WO2008/026626 WO 20080306
- Main IPC: C08F257/02
- IPC: C08F257/02 ; C08F279/02 ; C08L51/04 ; C08L55/02
Abstract:
Disclosed is a thermoplastic resin composition having excellent impact resistance at a low temperature, while maintaining high transparency; this thermoplastic resin composition is obtained by compounding an impact resistance improver into a thermoplastic resin, the impact resistance improver being composed of a graft copolymer which is obtained by polymerizing a vinyl monomer component in the presence of a polymer mixture containing a polymer having butadiene units as an essential component and a polymer having styrene units as an essential component, the polymer mixture containing 45 to 65% by mass of the butadiene units and 35 to 55% by mass of the styrene units.
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