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公开(公告)号：US10781187B2
公开(公告)日：2020-09-22
申请号：US16604694
申请日：2018-04-06
IPC分类号： C07D249/20 , C08K5/3475 , C08L101/00
摘要： Provided are benzotriazole derivative compounds of the general formula that are novel compounds capable of strongly absorbing light in the ultraviolet range, particularly 300-330 nm, while strongly absorbing light in the visible light short-wavelength range up to around 450 nm and being used suitably as a light absorber having high light fastness with a light-blocking function over an extended period of time. [Preferably, R1 is a hydrogen atom or alkyl group, R2 is a C1-8 alkyl group, R3 is a hydrogen atom, alkyl group, acryloyloxyalkyl group, or methacryloyloxyalkyl group].
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公开(公告)号：US10919868B2
公开(公告)日：2021-02-16
申请号：US16891231
申请日：2020-06-03
IPC分类号： C07D249/20 , C08K5/3475 , C08L101/00
摘要： Provided are benzotriazole derivative compounds of the general formula that are novel compounds capable of strongly absorbing light in the ultraviolet range, particularly 300-330 nm, while strongly absorbing light in the visible light short-wavelength range up to around 450 nm and being used suitably as a light absorber having high light fastness with a light-blocking function over an extended period of time. Preferably, R1 is a hydrogen atom or alkyl group, R2 is a C1-8 alkyl group, R3 is a hydrogen atom, alkyl group, acryloyloxyalkyl group, or methacryloyloxyalkyl group.
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公开(公告)号：US10676447B2
公开(公告)日：2020-06-09
申请号：US16499786
申请日：2018-03-16
发明人： Takuya Iwamoto , Toshiyuki Uesaka
IPC分类号： C07D249/20 , C08K5/3475
摘要： The present invention provides a benzotriazole derivative compound represented by a general formula, (wherein R3 represents an alkyl group, and R4 represents an acryloyloxyalkyl group or a methacryloyloxyalkyl group), as a novel compound capable of being suitably used as a highly light-resistant ultraviolet absorber or resin composition that exhibits an ultraviolet-blocking function over a prolonged period of time and that strongly absorbs wavelengths in the ultraviolet light range of 400 nm or less while ensuring little coloration.
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