method for preparation of water containing dispersions of copolymers of tertiary a - crylzuuresters and formed hechtkleefpro products.fully or partially coated with this copoly lakes.

摘要

1521716 Aqueous dispersion of polymers based on non-tertiary allyl acrylates BASF AG 12 Dec 1975 [14 Dec 1974] 50975/75 Heading C3P A polymer made up of, by weight (a) 70- 90% of a non-tertiary C8 alkyl acrylate, (b) 4-12% of methyl methacrylate, (c) 4-12% of a vinyl ester of a C2-4 carboxylic acid, (d) 1- 5% of acrylonitrile, (e) 0À5-3% of a hydroxy C2-5 alkyl (meth)acrylate, and (f) 0À5-3% of an alpha,#-olefinically unsaturated mono- or di-carboxylic acid or a monoester of such a dicarboxylic acid, is prepared by conventional emulsion polymerization to a K value of 74 to 90 in aqueous medium containing as emulsifying agent a sulphated and alkoxylated fatty alcohol, fatty amine or alkyl phenol. Component (a) may also contain other non-tertiary alkyl acrylates whose homopolymers have glass temperatures below -30‹ C. and component (f) may also contain vinyl sulfonic acid or a salt thereof. Uses.- As pressure sensitive adhesives when coated on a suitable backing.