Benzopyran compound and use of the same
    10.
    发明公开
    Benzopyran compound and use of the same 失效
    Benzopyran Verbindung und ihrer Verwendung。

    公开(公告)号:EP0635504A1

    公开(公告)日:1995-01-25

    申请号:EP94111307.8

    申请日:1994-07-20

    CPC分类号: C08K5/20 C07D211/12 C08L67/02

    摘要: The invention is a 2H-1-benzopyran-2-on compound represented by the formula (1) :

    and a colorless ultraviolet absorber consisting of the compound, and a thermoplastic resin composition and formed article comprising said ultraviolet absorber, and can provide a thermoplastic resin composition and a formed article of the composition which have excellent heat stability and sublimation resistance, comprise a non-coloring ultraviolet absorber, and are excellent in ultraviolet barrier property.

    摘要翻译: 本发明是由式(1)表示的2H-1-苯并吡喃-2-酮化合物:和由该化合物组成的无色紫外线吸收剂和热塑性树脂组合物和包含所述紫外线吸收剂的成型制品, 提供具有优异的热稳定性和耐升华性的组合物的热塑性树脂组合物和成型体,包含非着色紫外线吸收剂,并且具有优异的紫外线阻隔性。