Process for the preparation of polyorganosilylated carboxylate monomers or polymers thereof

Process for the preparation of polyorganosilylated carboxylate monomers of general formula (I) or polymers thereof, comprising the steps of:

• reacting a cyclosiloxane of formula (R4R5SiO)n with unsaturated organosilylated carboxylate of formula (II) or copolymers thereof under the presence of a suitable catalyst,
• wherein R1, R2, R3, R4, R5 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,
• R6 represents hydrogen, alkyl radical, or —CH2—CO2—SiR1R2R3,
• R7 represents hydrogen, alkyl radical or —COOR9 wherein R9 represents an alkyl group,
• R8 represents hydrogen, alkyl radical or —CH2—CO2-(SiR4R5O)n-SiR1R2R3, and
• n represents a number of dihydrocarbylsiloxane units from 3 to 20.