Polymerizable perfluoroalkylether macromer

摘要

PCT No. PCT/EP96/01256 Sec. 371 Date Dec. 22, 1997 Sec. 102(e) Date Dec. 22, 1997 PCT Filed Mar. 22, 1996 PCT Pub. No. WO96/31545 PCT Pub. Date Oct. 10, 1996Macromonomers of the formula I are described:Q-B(L-B)nT(I)wherein n is at least 1.0; Q is a polymerizable group; B may be the same or different and is a difunctional block of molecular weight in the range of from 100 to 4000 and wherein at least one B is a perfluorinated polyether of formula II;-OCH2CF2O(CF2CF2O)x(CF2O)yCF2CH2O-(II)wherein the CF2CF2O and CF2O units may be randomly distributed or distributed as blocks throughout the chain and wherein x and y may be the same or different such that the molecular weight of the perfluorinated polyether is in the range of from 242 to 4,000; L is a difunctional linking group; and T is a terminal group. These macromonomers may be used in the production of contact lenses, corneal implants, cell growth substrate or medical implant.