Reactive silicone and/or fluorine containing hydrophilic prepoly

Details Reactive silicone and/or fluorine containing hydrophilic prepoly Reactive silicone and/or fluorine containing hydrophilic prepoly

1991-02-13

1992-01-07

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526245, 526262, 526270, 526243, 526248, 526251, 526264, 526279, 351160H, C09F 100

Patent

active

050793195

ABSTRACT:
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 M.sub.v, and in which A is a siloxane or fluorine containing vinyl monomer, 30-70% by weight; B is NN-dimethylacrylamide or N-vinylpyrrolidone, 30-70% 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. M.sub.v 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.

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