Novel water-dispersible copolymers which contain at least one UVA light-absorbing monomer, one UVB light-absorbing monomer, one hydrophillic monomer, and optionally one hydrophobic monomer component and their use within compositions are disclosed. The UVA light-absorbing monomer absorbs at λ max ultraviolet light in the 320 - 400 nm range. The UVB light-absorbing monomer absorbs at λ max ultraviolet light in the 290 - 320 nm range. Because of the R₃ group used in the invention, the copolymers of the invention permit higher loading of UV monomers than previously obtainable.
本发明公开了新型
水分散共聚物,其中至少含有一种 UVA 吸光单体、一种 UVB 吸光单体、一种亲
水单体和一种可选的疏
水单体成分,以及它们在组合物中的用途。UVA 吸光单体以 λ max 吸收 320 - 400 纳米范围内的紫外线。UVB 光吸收单体在 290 - 320 纳米范围内吸收 λ 最大紫外线。由于本发明中使用了 R₃基团,因此本发明的共聚物可以比以前获得更高的紫外线单体负载量。