Patent ID: 7595370

Claim:
Process for the preparation of polyorganosilylated carboxylate monomers of general formula (I) comprising the steps of: reacting a cyclosiloxane of formula (R 4 R 5 SiO) n with unsaturated organosilylated carboxylate of formula (II) or copolymers thereof under the presence of a suitable catalyst, wherein R 1 , R 2 , R 3 , R 4 , R 5 each independently represent hydrogen, alkyl, alkenyl, alkynyl, alkyloxy, aryl, aralkyl or halogen radical optionally substituted by one or more substituents independently selected from the group comprising alkyl, aralkyl, aryl, hydroxy, halogen, amino or amino alkyl radicals, R 6 represents hydrogen, alkyl radical, or —CH 2 —CO 2 —SiR 1 R 2 R 3 , R 7 represents hydrogen, alkyl radical or —COOR 9 wherein R 9 represents an alkyl group, R 8 represents hydrogen, alkyl radical or —CH 2 —CO 2 —(SiR 4 R 5 O) n —SiR 1 R 2 R 3 , and n represents a number of dihydrocarbylsiloxane units from 3 to 20.