Abstract: A process for preparing stable aqueous dispersions of composite particles.

Abstract: The present invention relates to an aqueous polymer dispersion whose dispersed addition polymer P comprises, copolymerized in free-radically polymerized form, at least one polar monomer having a water solubility of greater than 50 g/liter (measured at 20° C.), and obtainable by free-radically initiated aqueous emulsion polymerization, the polar monomer being metered to the reaction mixture during the polymerization process at a variable, i.e., nonconstant rate, for example in the sense of a rate gradient. The present invention further relates to processes for preparing these aqueous polymer dispersions, to their use as binders and/or in coatings, and also to coatings comprising the polymer dispersion of the invention.

Abstract: The present invention relates to a coarsely divided microcapsule preparation with particles whose particle sizes are in the range from 200 ?m to 5 cm, comprising microcapsules with a capsule core of latent heat storage material and a thermosetting polymer as capsule wall and one or more polymeric binders whose binder polymer has thermoplastic properties and film-forming properties under processing conditions, where the binder content, calculated as solid, is 1-30% by weight, based on the total weight of the coarsely divided microcapsule preparation.

Abstract: The present invention relates to a coating material comprising (A) at least one binder as component (A) and (B) at least one photocatalytically active particle comprising a core composed of at least one first substance having a diameter of 0.1 to 1 ?m and at least one envelope at least partly surrounding the core and composed of at least one second substance having an average layer thickness of 0.1 to 10 nm as component (B).

Abstract: The present invention relates to an aqueous polymer dispersion whose dispersed addition polymer P comprises, copolymerized in free-radically polymerized form, at least one polar monomer having a water solubility of greater than 50 g/liter (measured at 20° C.), and obtainable by free-radically initiated aqueous emulsion polymerization, the polar monomer being metered to the reaction mixture during the polymerization process at a variable, i.e., nonconstant rate, for example in the sense of a rate gradient. The present invention further relates to processes for preparing these aqueous polymer dispersions, to their use as binders and/or in coatings, and also to coatings comprising the polymer dispersion of the invention.

Abstract: The present invention relates to a gypsum construction board comprising two covering layers and a gypsum core, where the gypsum core comprises microcapsules with a lipophilic capsule core and a capsule wall formed from 30 to 100% by weight, based on the total weight of the monomers, of one or more monomers (monomers I) selected from C1-C24-alkyl esters of acrylic and methacrylic acid, acrylic acid, methacrylic acid and maleic acid, 0 to 70% by weight, based on the total weight of the monomers, of one or more monomers with at least two nonconjugated ethylenic double bonds (monomers II), which is insoluble or sparingly soluble in water, and 0 to 40% by weight, based on the total weight of the monomers, of one or more other monomers (monomers III), and at least one polymer P, which has a glass transition temperature Tg in the range from ?60 to 160° C., and also a method for its production.

Abstract: The present invention relates to aqueous multistage polymer dispersions obtainable by free-radically initiated aqueous emulsion polymerization, having a soft phase and a hard phase, and a hard-to-soft stage ratio of 25% to 95% by weight to 75% to 5% by weight, the glass transition temperature (Tg) of the soft phase, as first stage, being ?30 to 0° C. and that of the hard phase, as second stage, being 20 to 60° C., comprising at least one monomer of the general formula I in which the variables have the following definitions: n=0 to 2, R1, R2, R3=independently of one another hydrogen or methyl group, X=O or NH, Y=H, alkali metal or NH4, to processes for preparing these aqueous polymer dispersions, and to the use thereof as binders in coatings, and also to coatings comprising the polymer dispersion of the invention.

Abstract: Use of an aqueous polymer dispersion comprising at least one polymer (P), obtainable by free radical emulsion polymerization of at least one ethylenically unsaturated monomer (M1) and from 20 to 75% by weight of tert-butyl (meth)acrylate, as a binder in construction chemistry products.

Abstract: The invention provides a process for improving the storage stability of aqueous composite-particle dispersions and of aqueous formulations comprising them.

Abstract: A process for preparing stable aqueous dispersions of composite particles.

Abstract: The present invention relates to a coating material in the form of an aqueous composition comprising: 25% to 55% by weight of composite particles having an average particle size of 50 to 350 nm, in the form of an aqueous dispersion, which are constructed of 20% to 60% by weight, based on the composite particle, of inorganic solid having an average particle size of 5 to 100 nm, 40% to 80% by weight, based on the composite particle, of a polymer matrix having a T9 in the range from ?60 to +40° C. and obtainable by free-radical emulsion polymerization of at least one ethylenically unsaturated monomer, and 20% to 50% by weight of fillers, with 5% to 40% by weight, based on the total solids content, being selected from aluminum silicates, borosilicate glasses, polymethyl methacrylate particles, and polystyrene particles, 1% to 30% by weight of pigments, and 0% to 5% by weight of one or more thickeners 0.

Abstract: The present invention relates to a titanium dioxide composition which comprises titanium dioxide nanoparticles, its preparation and use.

Abstract: The present invention provides a process for preparing emulsion polymer particles of a hollow core/shell structure in the presence of a monomer plasticizer having a ceiling temperature less than 181° C. wherein a polymerization inhibitor or reducing agent is not added to the aqueous emulsion of the core shell particles during the neutralization and swelling stage. The obtained core shell particles are useful in paints, paper coatings, foams, and cosmetics.

Abstract: The invention provides a process for improving the storage stability of aqueous composite-particle dispersions and of aqueous formulations comprising them.

Abstract: The present invention relates to a coating material comprising (A) at least one binder as component (A) and (B) at least one photocatalytically active particle comprising a core composed of at least one first substance having a diameter of 0.1 to 1 ?m and at least one envelope at least partly surrounding the core and composed of at least one second substance having an average layer thickness of 0.1 to 10 nm as component (B).

Abstract: The present invention relates to an aqueous polymer dispersion whose dispersed addition polymer P comprises, copolymerized in free-radically polymerized form, at least one polar monomer having a water solubility of greater than 50 g/liter (measured at 20° C.), and obtainable by free-radically initiated aqueous emulsion polymerization, the polar monomer being metered to the reaction mixture during the polymerization process at a variable, i.e., nonconstant rate, for example in the sense of a rate gradient. The present invention further relates to processes for preparing these aqueous polymer dispersions, to their use as binders and/or in coatings, and also to coatings comprising the polymer dispersion of the invention.

Abstract: The present invention relates to a process for preparing emulsion polymer particles having a core/shell structure and also to their use in paints, paper coatings, foams, and cosmetics.

Abstract: The present invention relates to a coarse-particled microcapsule preparation comprising microencapsulated latent heat accumulators and one or more polymeric binders, the ratio of surface area to volume of the particles obeying the following relationship: Surface ? ? area 2 Volume 3 ? 2.5 , and to processes for its production and its use in heat exchangers and building materials.

Abstract: Microcapsules comprising one or more lipophilic substances as core material and a polymer as capsule shell, which are obtainable by free-radical polymerization of an oil-in-water emulsion comprising from 30 to 100% by weight, based on the total weight of the monomers, of one or more C1-C24-alkyl esters of acrylic and/or methacrylic acid (monomer I), from 0 to 80% by weight, based on the total weight of the monomers, of a bifunctional or polyfunctional monomer (monomers II) which is insoluble or sparingly soluble in water and from 0 to 40% by weight, based on the total weight of the monomers, of other monomers (monomers III), the lipophilic substance and solid inorganic particles having a mean particle size of from 45 to 1000 nm, and a process for producing them are described. They can be used in binding building materials, textiles and gypsum plasterboard.

Abstract: The present invention relates to a packaging material in the form of a composite comprising at least one paper or cardboard support applied atop which there are at least one paper coating slip layer, if appropriate a print layer, if appropriate one or more thermoplastic layers and if appropriate one or more further layers, wherein at least one of the applied layers comprises microencapsulated latent heat storage material and the capsule wall of the microencapsulated latent heat storage material is constructed from 10% to 100% of one or more C1-C24-alkyl esters of acrylic by weight acid and/or methacrylic acid (monomers I), 0% to 80% of a difunctional or polyfunctional monomer by weight (monomers II) which is insoluble or sparingly soluble in water, and 0% to 90% of other monomers (monomer III), by weight based in each case on the total weight of the monomers, to a process for producing it, and to its use for packaging foodstuffs.