Vinyl unsaturated copolymers are described which are obtained in a two-step process and which consist of monomeric units A, B, C, D and E, copolymerized in a first step, and in a second step reacted with a reactive vinyl monomer Mv, and in which A is a silicon or fluorine containing vinyl monomer, 20-79.5% by weight; B is N,N-dimethylacrylamide, N-vinylpyrrolidone, or N-vinylacetamide, 20-79.5% by weight; C is an active hydrogen containing vinyl monomer, 0.5-25% by weight; D are other copolymerizable comonomers, 0-30% by weight, and E is a chain transfer agent, 0-10 mol percent. Mv is a vinyl unsaturated isocyanate.
These vinyl unsaturated polymers are useful, either by themselves or in combination with other copolymerizable vinyl monomers, as heat or UV-curable coatings or glass, plastic, wood, paper, textiles, metal or ceramics, said coatings possessing low surface energies and low refractive indices. They are especially useful as UV-curable hydrophilic coatings and water-swelling biocompatible polymers, especially fully molded highly oxygen-permeable contact lenses.
所述
乙烯基不饱和共聚物通过两步法获得,由单体单元 A、B、C、D 和 E 组成,在第一步中共聚,在第二步中与反应性
乙烯基单体 Mv 反应,其中 A 是含
硅或
氟的
乙烯基单体,重量百分比为 20-79.5%;B 是 N,N-二甲基
丙烯酰胺、
N-乙烯基吡咯烷酮或 N-
乙烯基乙酰胺,重量百分比为 20-79.5%;C 是含活性氢的
乙烯基单体,重量百分比为 20-79.5%。5%(重量百分比);B 是 N,N-二甲基
丙烯酰胺、
N-乙烯基吡咯烷酮或 N-
乙烯基乙酰胺,20-79.5%(重量百分比);C 是含活性氢的
乙烯基单体,0.5-25%(重量百分比);D 是其他可共聚的共聚单体,0-30%(重量百分比);E 是链转移剂,0-10 摩尔%。Mv 是
乙烯基不饱和
异氰酸酯。
这些
乙烯基不饱和聚合物本身或与其他可共聚的
乙烯基单体结合,可用作
玻璃、塑料、木材、纸张、纺织品、
金属或陶瓷的热固化或紫外线固化涂层,所述涂层具有低表面能和低折射率。作为紫外线固化的亲
水涂层和遇
水膨胀的
生物相容性聚合物,特别是完全模塑的高透氧性隐形眼镜,它们尤其有用。