Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.