POLYMER CROSSLINKED WITH CROSSLINKER CONTAINING SACCHARIDE RESIDUE AND OPHTHALMIC LENS MADE OF THIS POLYMER AND PROCESS FOR THEIR PREPARATION

摘要

The polymers according to the invention consist of a hydrophilic artificial sea and a cross-functional compound of the general formula [S- (A) n] y containing a polylfunctional saccharide tube, in which S is a five- or six-membered saccharide ring, A is - (CH2) b - O - R2 - (R3) c - (R4) t - (CONH % 15 - R5), n is a number between 2 and 4, y is a number between 1 and 4, b is 0 or 1, provided that at least one A for b is 1, c is 0 or 1, R2 is - (CH2CHR6O) x, R6 is hydrogen or methyl, x is a number between 8 and 250, R3 is - CONH - R7 - NHOC -, R7 is a divalent tube which is or isopropyl diisocyanate or diisocyanate tube, R4 is X1 - [CH2 (CHR6) aX] zCH2 (CHR6) a-X when c = 1 and ű = 1 or R4 is - O - R8 if ű = 0 , t is 0 or 1, X is O or NH, X1 is O or NH, a is 0 to 3, z is 10 to 180, R8 is - (CHR6CH2O) f (CH2) e [C (R9) 2] dC (R9) 3, R 9 is a hydrogen or fluorine atom, d is a number from 0 to 30, e is a number from 1 to 69, f is a number from 0 to 60, R5 is a free radical reactive end port, and is 0 or 1, provided that the radical is is 1 for at least one A per y-tube. ŕ