发明公开
EP0326717A1 Bloc copolymer compositions and process for the preparation thereof
失效
Blockmischpolymerzusammensetzungen und Verfahren zu deren Herstellung。
- 专利标题: Bloc copolymer compositions and process for the preparation thereof
- 专利标题(中): Blockmischpolymerzusammensetzungen und Verfahren zu deren Herstellung。
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申请号: EP88200170.4申请日: 1988-02-01
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公开(公告)号: EP0326717A1公开(公告)日: 1989-08-09
- 发明人: Sakagami, Toshinori , Ito, Hisaharu , Nagano, Masanobu , Miyachi, Takumi
- 申请人: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
- 申请人地址: Carel van Bylandtlaan 30 NL-2596 HR Den Haag NL
- 专利权人: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
- 当前专利权人: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
- 当前专利权人地址: Carel van Bylandtlaan 30 NL-2596 HR Den Haag NL
- 代理机构: Tuijn, Jan Warnaar
- 主分类号: C08K5/34
- IPC分类号: C08K5/34 ; C08L53/02
摘要:
An aromatic vinyl compound-conjugated diene block copolymer composition having improved light stability comprises a mixture of a 2-(hydroxyphenyl)-substituted benzotriazole and an ester of a sterically hindered 4-hydroxypiperidine, 0.3-5 parts by weight per 100 pbw of block copolymer being present and the weight ratio benzotriazole to ester being 20:80 to 80:20.
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