Patent ID: 8093375

Claim:
A reactive polysaccharide derivative of formula [Z 1 —B—SO 2 —CH 2 —CH 2 —O n PS OH] m (1), wherein B is a radical of formula wherein R 1 is hydrogen or C 1 -C 4 alkyl, R 2 is hydrogen, C 1 -C 4 alkyl unsubstituted or substituted by hydroxy, sulfo, sulfato, carboxy or by cyano, or a radical R 3 is hydrogen, hydroxy, sulfo, sulfato, carboxy, cyano, halogen, C 1 -C 4 alkoxycarbonyl, C 1 -C 4 alkanoyloxy, carbamoyl or a group —SO 2 —Y, alk and alk 1 are each independently of the other linear or branched C 1 -C 6 alkylene, arylene is a phenylene or naphthylene radical unsubstituted or substituted by sulfo, carboxy, C 1 -C 4 alkyl, C 1 -C 4 alkoxy or by halogen, Q is a radical —O— or —NR 1 — wherein R 1 is as defined above, W is a group —SO 2 —NR 2 —, —CONR 2 — or —NR 2 CO— wherein R 2 is as defined above, Y is vinyl or a radical —CH 2 —CH 2 —U and U is —Cl, —Br, —F, —OSO 3 H, —OCO—CH 3 , OPO 3 H 2 , OCO—C 6 H 5 , OSO 2 —C 1 -C 4 alkyl and OSO 2 —N(C 1 -C 4 alkyl) 2 , and k is a number 0 or 1, Z 1 is a reactive radical which radical reacts with a natural or man-made polymer or a textile fiber material, PS corresponds to the backbone of the polysaccharide molecule apart from the hydroxyl groups and which polysaccharide molecule is a cyclodextrin or a cyclodextrin derivative, which cyclodextrin derivative is a cyclodextrin ether or mixed ether, cyclodextrin ester or mixed ester or mixed cyclodextrin/ether/ester derivative, m is 0, 1 or an integer greater than 1, n is 1 or an integer greater than 1, and the sum of n+m corresponds to the original number of hydroxyl groups in the polysaccharide molecule, and wherein the asterisk in each of the radicals B of formulae (2a), (2b), (2c), (2d) and (2e) indicates the position which is bound to the sulfonyl group of the polysaccharide derivative of formula (1).