PARTICULATE GRAFT POLYMER WITH IMPROVED ADHESION BETWEEN GRAFTING BASE AND GRAFT SHEATH

摘要

The present invention relates to at least one alkyl acrylate A1 having from 1 to 8 carbon atoms in an alkyl moiety of from 30 to 90% by weight relative to the total of A and B, and from 85 to 99.8% by weight as alkyl-grafting base, relative to -A, At least one rubbery polymer A having an average particle size of 30 to 1000 nm consisting of 0.1 to 5% by weight of at least one polyvalent, crosslinking monomer A2 and 0.1 to 10% by weight of at least one monoethylenically unsaturated monomer And from 10 to 70% by weight relative to the total of B, from 50 to 90% by weight of at least one aromatic vinyl monomer B1 and from 10 to 50% by weight of at least one polar, copolymerizable, ethylenically unsaturated Consisting of sheath B, grafted to rubbery polymer A, consisting of monomer B2, wherein monomer A3 is hydroxy alkyl acrylate or methacrylate Open, particulate Graf relates to a polymer agent.