Patent ID: 8901242

Claim:
A film, comprising at least a urethane polymer, at least one of ultraviolet absorber and at least one of hindered amine light stabilizer, wherein the film is obtained from a film precursor containing at least a urethane polymer, from 0.1 weight % to 4.0 weight % of said at least one UV absorber based on 100 weight % of a film precursor, and from 0.1 weight % to 4.0 weight % of said at least one hindered amine light stabilizer based on 100 weight % of the film precursor, wherein both an initial b* value of the film measured by a spectrocolorimeter (value at an angle of 15 degrees) and a b* value after being performed an accelerated weathering test for 120 hours (value at an angle of 15 degrees) are 4.0 or less and more than 0, wherein a non-volatile component after heating the film at 130° C. for two hours is 96% or more, wherein the percentage is a ratio determined by the weight after heat-treatment/weight before heat-treatment, and wherein the accelerated weathering test is performed by using a metal weather meter for four hours under the condition of irradiation at a panel temperature of 63° C. and relative humidity of 70%, four hours under the condition of irradiation and rainfall at a panel temperature of 70° C. and a relative humidity of 90%, and four hours in the dark at a panel temperature of 30° C. and a relative humidity of 98%, where a total of 12 hours is defined as one cycle, wherein the metal weather meter is DAIPLA METAL WEATHER KU-R5N manufactured by Daipla Wintes Co., Ltd.