GRAFT COPOLYMERS AND USE THEREOF AS LOW-PROFILE ADDITIVES

摘要

The invention provides graft copolymers obtainable by A) free-radically initiated polymerization of one or more vinyl esters a), one or more further ethylenically unsaturated monomers b) comprising at least one further functional group, B) subsequent polymer-analogous reaction of the copolymers from stage A) by joining the monomer units b) thereof to one or more further monomers b) such that at least one free-radically polymerizable group is introduced into the copolymers from stage A), characterized in that C) one or more ethylenically unsaturated monomers are polymerized onto the products from stage B) by free-radically initiated polymerization.