| abstract |
To provide a composite film having photocurability and weather resistance. The composite film is a composite film containing at least a urethane polymer, and an initial b * value (angle value of 15 degrees) measured by a spectrocolorimeter and after 120 hours in an accelerated weathering test. The b * values (values at an angle of 15 degrees) are 4.0 or less, and the non-volatile component after heating at 130 ° C. for 2 hours is 96% or more. [Selection figure] None |