Patent ID: 9465150
Filing Date: 2016-10-11
CPC Classification: B32B,G02B

Claim Text:
1. A protective film for polarizing plate, the protective film comprising: a resin; an ultraviolet absorbing agent A having an absorption maximum in a wavelength range of from 350 to 400 nm; an ultraviolet absorbing agent B having an absorption maximum in a wavelength range of from 270 to 330 nm; and a compound represented by the following formula (I): wherein R wherein a content of the ultraviolet absorbing agent A is from 0.1 to 5% by weight relative to the resin, a content of the ultraviolet absorbing agent B is from 0.1 to 5% by weight relative to the resin, and the protective film fulfills the following requirements (a) to (d): (a) a thickness of the protective film is from 5 to 40 μm, (b) a transmittance of the protective film at a wavelength of 300 nm is 2% or less, (c) a transmittance of the protective film at a wavelength of 380 nm is 4% or less, (d) a surface hardness of the protective film measured by using a Knoop indenter at an indentation load of 50 mN is 210 N/mm