| 摘要 |
PROBLEM TO BE SOLVED: To provide a polymer having more suitable absorption property of ultraviolet light.SOLUTION: The polymer of the present invention has a portion which has a light transmittance of 10% or lower at a wavelength of 220 nm, a light transmittance of 25% or higher and 75% or lower at a wavelength of 320 nm, and a light transmittance of 90% or higher at a wavelength of 400 nm. The polymer may be formed by polymerizing a raw material mixture including an ultraviolet light absorber, and the ultraviolet light absorber has no maximum absorption wavelength in an area exceeding 330 nm, preferably. The polymer may be configured in such a way that the ultraviolet light absorber comprises a first structure in which oxygen or amino group is bound to an aromatic ring, and a second structure in which a carbonyl group is bound to an aromatic ring directly or indirectly. |
