Process for producing copolu00ecmero block polysiloxane, copolu00ecmero block polysiloxane composition, and cosmetic and personal care

摘要

Process for manufacturing copolu00ecmero block polysiloxane, copolu00ecmero block polysiloxane composition, and cosmetic and personal care.Process for the manufacture of block copolymer of polysiloxane which is composed of units of the formula [a], [b], in which the polymer is composed of radically polymerisable monomer block.And B is a block of polysiloxane.The process comprises the steps of forming the macroiniciador of polysiloxane by grafting of radical initiator on the polysiloxane via the reaction of substitution nucleofu00edlica between groups.In the polysiloxane and radical initiator respectively.And reacting the macroiniciador of polysiloxane with radically polymerisable monomers thus obtained in the polymerization reaction of the radical with transfer of the atom to form a block copolymer of POlissiloxano. Also provided are cosmetic and personal care compositions, such as hair styling compositions containing copolymers of polysiloxane.