Abstract: Aqueous synthetic resin dispersions are obtainable by combining an aqueous starting dispersion of a polymer A, which has a glass transition temperature of from -50.degree. to +60.degree. C. and is composed of monoethtylenically unsaturated monomers which, apart from carboxyl groups and their derivatives, carry no further groups which are polymerizable or condensable with one another, with or without butadiene, and an aqueous solution of a polymer B, which is essentially composed of N-hydroxycarboxymethylamides of acrylic and/or methacrylic acid and/or water-soluble salts of these N-hydroxycarboxymethylamides, at the beginning, in the course of, and/or after completion of, the preparation of the aqueous starting dispersion, with the proviso that the solids content of polymer B is from 0.5 to 10% by weight, based on the total amount of polymer A and polymer B.

Abstract: Aqueous synthetic resin dispersions are obtainable by single-stage emulsion copolymerization of a monomer mixture ofa) from 35 to 99.5% by weight of one or more vinyl esters of aliphatic monocarboxylic acids of not more than 6 carbon atoms (monomers A),b) from 0.5 to 10% by weight of one or more monomers of the general formula I (monomers B) ##STR1## where R.sup.1, R.sup.2 and R.sup.3 independently of one another are each hydrogen or methyl,c) from 0 to 64.5% by weight of one or more of the monomers acrylonitrile, styrene and esters of an .alpha.,.beta.-monoethylenically unsaturated monocarboxylic acid of 2 to 5 carbon atoms and an alkanol of 1 to 8 carbon atoms (monomers C) andd) from 0 to 5% by weight of one or more .alpha.,.beta.

Abstract: Aqueous (meth)acrylate copolymer dispersions can be prepared by polymerization of the monomers in two stages having different monomer compositions and with the concomitant use of crosslinking monomers in aqueous emulsion at the usual temperatures in the presence of the conventional emulsifiers and polymerization initiators, from 40 to 99.5% by weight of the total monomers being polymerized in the first stage and from 60 to 0.5% by weight of the total monomers being polymerized in the second stage, by a process in which from 0.5 to 10% by weight, based on the total monomers, of (meth)-acrylamidoglycollic acid and /or its methyl ester and/or its methyl ether are polymerized in the second stage and from 0 to 1.8% by weight, based on the total monomers, of the amidoglycollic acid compounds are polymerized in the first stage, and the resulting copolymer dispersions are used as binders for sheet-like textile fibrous structures.

Abstract: Binders, impregnating agents and coating agents based on an aqueous dispersion of an amide-containing copolymer, wherein the copolymer contains recurring units of the general formula I ##STR1## where R is H and/or CH.sub.3, eliminate virtually no formaldehyde in use and may advantageously be used as binders for bonding nonwovens.

Abstract: Nonwovens of natural and synthetic fibers which are bonded uniformly over the whole cross-section are obtained by using as binders aqueous polymer dispersions containing as heat-sensitizing agents alkoxylated amines having inverse solubility and a pH of less than 6.