Abstract: In a process for preserving a mineral molding by coating the surface of the mineral molding with an aqueous composition comprising an aqueous polymer dispersion, the dispersed polymer P comprises an ethylenically unsaturated acid of the 2-acrylamido-2-methylpropanesulfonic acid type polymerized into it in free-radically polymerized form.

Abstract: The present invention provides aqueous pigmented coating compositions having a pigment volume concentration pvc of at least 10 which are essentially free from volatile organic compounds and comprise: (i) at least one aqueous room temperature film forming polymer dispersion of at least one polymer P which is composed of esters of acrylic acid with C2-C20 alkanols or C5-C10 cycloalkanols and/or esters of methacrylic acid with C1-C20 alkanols or C5-C10 cycloalkanols, (ii) at least one inorganic pigment and, if desired, organic or inorganic fillers, (iii) from 0.05 to <0.3% by weight, based on the polymer P, of at least one nonpolymerizable photoinitiator, (iv) water, and customary auxiliaries.

Abstract: In a process for preserving a mineral molding by coating the surface of the mineral molding with an aqueous composition comprising an aqueous polymer dispersion, the dispersed polymer P comprises an ethylenically unsaturated acid of the 2-acrylamido-2-methylpropanesulfonic acid type polymerized into it in free-radically polymerized form.

Abstract: In a process for preserving a mineral molding by coating the surface of the mineral molding with an aqueous composition comprising an aqueous polymer dispersion, the dispersed polymer P comprises an ethylenically unsaturated acid of the 2-acrylamido-2-methylpropanesulfonic acid type polymerized into it in free-radically polymerized form.

Abstract: Polymers I comprising from 15 to 80% by weight of monomers of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.3 -alkyl, R.sup.4 is C.sub.1 -C.sub.3 -alkyl and X is O or NH, and from 20 to 85% by weight of other monomers capable of undergoing free radical copolymerization are used as assistants in the spray drying of aqueous dispersions of polymers II which differ from the polymers I. The resultant powders are added to mineral binders.

Abstract: Polymers I comprising from 15 to 80% by weight of monomers of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.3 -alkyl, R.sup.4 is C.sub.1 -C.sub.5 -alkyl and X is O or NH, andfrom 20 to 85 % by weight of other monomers capable of undergoing free radical copolymerizationare used as assistants in the spray drying of aqueous dispersions of polymers II which differ from the polymers I.

Abstract: Polymers I comprising from 15 to 80% by weight of monomers of the general formula I ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are each C.sub.1 -C.sub.3 -alkyl, R.sup.4 is C.sub.1 -C.sub.5 -alkyl and X is O or NH, and from 20 to 85% by weight of other monomers capable of undergoing free radical copolymerization are used as assistants in the spray drying of aqueous dispersions of polymers II which differ from the polymers I.

Abstract: Aqueous polymer dispersions contain, as a dispersant, a mixture of an ethylene oxide/propylene oxide copolymer, an ethoxylated alkylphenol and/or an ethoxylated fatty alcohol, an ethoxylated polysaccharide and, if required, as a further component, sulfuric acid half-esterified with an ethoxylated alkylphenol and/or an ethoxylated fatty alcohol.

Abstract: Aqueous dispersions contain a polyurethane which consists essentially ofa) organic polyisocyanates and, if required, minor amounts of monoisocyanates,b) dihydroxy compounds having a molecular weight of from more than 500 to 10,000 g/mol and at least 2 carboxyl or carboxylate groups in the molecule and which are obtainable by reacting dihydroxy compounds with tetracarboxylic dianhydrides in a molar ratio of from 2:1 to 1.05:1,c) if required, polyhydroxy compounds which differ from (b) and have a molecular weight of from more than 500 to 5,000 g/mol,d) if required, compounds having at least one group which is reactive toward isocyanate and at least one anionic group or group convertible into an anionic group and having a molecular weight of from 60 to 500 g/mol ande) if required, compounds which differ from d) and e) and have at least 2 groups which are reactive toward isocyanate and a molecular weight of from 60 to 500 g/mol.

Abstract: Condensation polymers of sulfonated phenols, urea, other organic nitrogen-bases and formaldehyde, obtainable by(A) sulfonation of phenols with from 1.0 to 1.5 moles of sulfuric acid per mole of phenol and(B) condensation of these sulfonation products with(a) from 0.5 to 1.8 moles of urea per mole of phenol,(b) from 0.001 to 0.5 moles of at least one other organic nitrogen-base per mole of phenol, and(c) from 1.0 to 3.0 moles of formaldehyde per mole of phenol.The condensation polymers are suitable for use as tanning agents in the leather and skin-producing industry and as spraying aids for redispersible polymer powders.

Abstract: Polymer powders which are redispersible in water and are obtainable by atomizing aqueous polymer dispersions to which from 3 to 50% by weight, based on the polymer, of a water-soluble alkali metal salt or alkaline earth metal salt of a phenolsulfonic acid/formaldehyde condensate has been added are used as additives in hydraulic binders.

Abstract: Binders for non-tacky, non-soiling, flexible coatings based on aqueous copolymer dispersions which contain zinc-amine complexes essentially consist of(A) from 99 to 90% by weight of a (meth)acrylate copolymer dispersion whose polymer has a glass transition temperature of from -40.degree. to -1.degree. C. and(B) from 1 to 10% by weight of a water-soluble zinc-amine complex salt of a polymeric carboxylic acid,the percentages by weight being based on the total amount of polymer.

Abstract: Sound-insulating boards which are based on mineral fibers and thermoplastic binders and may or may not additionally contain fillers, flameproofing agents and water repellants contain, as the binder, from 4 to 20%, based on the weight of the mineral fibers, of polymers having a glass transition temperature of from 30.degree. to 80.degree. C. and consisting of not less than 60% by weight, based on the copolymer, of (meth)acrylates of 1 to 4 carbon atoms and as much as 40% by weight of acrylonitrile and/or styrene.

Abstract: The object of this invention is a moisture-curing, storage stable, single-component polyurethane system comprising:A. a polyurethane prepolymer with a free isocyanate content of 1 to 5 percent by weight;B. a dialdimine having the formulaR[--N.dbd.CH--C(CH.sub.3).sub.2 --CH.sub.2 --O--CO--CH--(CH.sub.3).sub.2 ].sub.2in whichR is a divalent aliphatic radical with 2 to 10 carbon atoms, aliphatic radical having 4 to 10 carbon atoms and containing ether oxygen and/or lower alkylamino nitrogen atoms, cycloaliphatic radical with 6 to 15 carbon atoms oraromatic radical with 6 to 21 carbon atoms;andC. an acid catalyst selected from the group consisting of aliphatic carboxylic acids, aromatic carboxylic acids, toluenesulfonic acid, and mixtures thereof.The polyurethane systems are used as coating, sealing, casting, spackling and bonding materials.