Patent ID: 8030398

Claim:
A method for producing a (meth)acrylic resin emulsion, comprising: redox emulsion (co)polymerizing at least one monomer selected from the group consisting of an acrylate monomer and a methacrylate monomer, and, optionally, a further copolymerizable monomer in the presence of a vinyl alcohol polymer dispersant and a iron compound operable as a catalyst, said vinyl alcohol polymer dispersant having a degree of saponification of from 80 to 95 mol % and a degree of polymerization of from 400 to 2000, said emulsion (co)polymerizing comprising: i) feeding into a reactor at an initial stage (1) an iron compound, (2) the monomers, (3) the vinyl alcohol polymer to form a polymerizing system and (4) a reducing agent selected from the group consisting of L(+)-tartaric acid, sodium L(+)-tartrate, and a combination thereof, and ii) continuously or intermittently adding to said polymerizing system a peroxid, wherein said acrylate monomer is n-butyl acrylate and said methacrylate monomer is methyl methacrylate.