| 摘要 |
This invention relates to polymers and polymer lattices for use in anti-corrosive paints, such use, and to a process for preparing the polymers and polymer lattices. More particularly, the invention relates to a process for preparing polymers and polymer lattices for anti-corrosive paints by aqueous emulsion polymerization of a monomer mixture in the presence of a phosphate ester surfactant, characterised in that the monomer mixture is composed of: (a) one or more vinylesters of tertiary, saturated carboxylic acids containing 5 to 20, preferably 9, 10 or 11 carbon atoms in the acid moiety; (b) one or more alkyl esters of alpha, beta-unsaturated carboxylic acids containing up to 12 carbon atoms in the alkyl moiety; (c) one or more stabilizing monomers selected from the group comprising (meth)acrylic acid, (meth)acrylamide, a C1-C3 hydroxyalkyl (meth)acrylate and sodium vinyl sulphonate; and provided that the polymerization is carried out essentially in the absence of a non-ionic surface active agent. |
