Abstract:
Polymer dispersions are heat-sensitized by the addition of alkoxylated amines having inverse solubility, when the pH of the mixture is below 6.
Abstract:
A process for the preparation of aqueous (meth)acrylate copolymer dispersions by polymerising the monomers in two steps of different monomer composition and additionally using crosslinking monomers in aqueous emulsion at a conventional temperature in the presence of conventional emulsifiers and polymerisation initiators, wherein from 40 to 99.5 % by weight of the entire amount of monomers are polymerised in the first step and from 60 to 0.5 % by weight are polymerised in the second step, from 0.5 to 10 % by weight, based on the total amount of monomers, of (meth)acrylamidoglycolic acid and/or the methyl ester and/or methyl ether thereof are polymerised in the second step and from 0 to 1.8 % by weight, based on the total amount of monomers, of the amidoglycolic acid compounds are polymerised in the first step. The copolymer dispersions obtained are used as binders for sheet-like textile structures made from fibres.