Patent ID: 6770692
Filing Date: 2004-08-03
Classification: C08K,G02B

Abstract:
A plastic composition comprisinga plastic base material, 0.1 to 1.0% by weight of a benzotriazole based ultraviolet absorbent expressed by the following general formula (1) wherein, R1 and R2 each represent a C1 to C8 alkyl group, which may be the same or different,and 0.1 to 1.0 ppm by weight of an anthraquinone based violet colorant expressed by the following general formula (2) wherein, R represents a substituted or an unsubstituted phenyl group, and X represents â€”OH or â€”NHR,the composition having a transmittance for a radiation of 390 nm in wavelength of 1% or lower, a transmittance for a radiation of 400 nm in wavelength of 10% or lower, and a transmittance for radiation of 410 nm in wavelength in a range of from 40 to 60%.