Patent ID: 6844003

Claim:
A compound of formula (I): wherein: R 1 is chosen from: linear and branched (C 1 -C 12 ) aliphatic alkyl groups, substituted with at least one group chosen from OH, NH 2 , SH, CN, CF 3 , halogen, CONHR 5 , COOR 5 , OR 5 , SR 5 , SiOR 5 , NHR 5 , aliphatic (C 3 -C 6 ) rings, and aromatic (C 3 -C 6 ) rings, wherein R 5 is chosen from linear and branched (C 1 -C 4 ) alkyl groups, aryl groups, natural polymers, synthetic polymers, and copolymers, said polymers and copolymers carrying at least two groups chosen from: hydroxyl, carboxylate, primary amine, secondary amine, tertiary amine, thiol, and aldehyde; R 2 is chosen from a hydrogen atom, a halogen atom, CF 3 , OH, OCF 3 , COOH, R 7 , OR 7 , and OCOR 7 , wherein R 7 is chosen from linear and branched (C 1 -C 4 ) aliphatic alkyl groups; R 3 is chosen from monohalogenated and polyhalogenated linear and branched (C 1 -C 4 ) alkyl groups, and from aryl groups, wherein the aryl groups are optionally substituted with at least one group chosen from OH, NH 2 , SH, CN, CF 3 , halogen, COOH, CONHR 8 , COOR 8 , OR 8 , SR 8 , and NHR 8 , wherein R 8 is chosen from linear and branched (C 1 -C 12 ) alkyl radicals; and R 4 is chosen from linear and branched (C 1 -C 4 ) alkyl groups, and a CF 3 group.