申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0635504A1
公开(公告)日:1995-01-25
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.
本发明是一种由式(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,以及包含所述紫外线吸收剂的热塑性树脂组合物和成型品,可提供热稳定性和抗升华性优异、包含无色紫外线吸收剂、紫外线阻隔性优异的热塑性树脂组合物和由该组合物制成的成型品。