C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/182, 88/40,
C08F 230/08 (2006.01) C07F 7/10 (2006.01) C08F 8/30 (2006.01) C08F 220/54 (2006.01) C08F 226/10 (2006.01) G02B 1/04 (2006.01)
Patent
CA 2028359
6V-17805/1+2/+/CGC 1447 Reactive Silicone and/or Fluorine Containing Hydrophilic Prepolymers and Polymers Thereof Abstract of the Disclosure 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 combinadon 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 refracdve indices. They are especially useful as UV-curable hydrophilic coatings and water-swelling biocompatible polymers, especially fully molded highly oxygen-permeable contact lenses.
Fetherstonhaugh & Co.
Novartis Ag
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