Abstract: Flexible, sheet-like substrates having an abrasive surface, which are obtainable by applying an aqueous solution or dispersion of at least one precondensate of a heat-curable resin to the top and/or bottom of a flexible, sheet-like substrate in an amount of at least 5 to 90% by weight, based on the uncoated, dry substrate, crosslinking the precondensate and drying the treated substrate.

Abstract: The invention relates to flexible, flat substrates with a flexible, abrasive surface which comprise 0.1 to 90% by weight of a mixture, based on the uncoated substrate, which comprise the condensation product of 99.985 to 20% by weight of at least one precondensate of a heat-curable resin, 0.005 to 10% by weight of a polymeric thickener selected from the group consisting of biopolymers, associative thickeners and/or completely synthetic thickeners, 0.

Abstract: The invention relates to flexible foams with a flexible, abrasive surface which comprise 1 to 90% by weight of a mixture, based on the uncoated substrate, which comprises the condensation product of 99.985 to 20% by weight of at least one precondensate of a heat-curable resin, 0 to 10% by weight of a polymeric thickener selected from the group consisting of biopolymers, associative thickeners and/or completely synthetic thickeners, 0.

Abstract: A light wood-containing material having an average density in the range from 200 to 600 kg/m3, comprising, based in each case on the wood-containing material: A) from 30 to 95% by weight of wood particles; B) from 1 to 25% by weight of a filler having a bulk density in the range from 10 to 150 kg/m3, selected from the group consisting of foamable plastic particles and already foamed plastic particles; C) from 0.1 to 50% by weight of a binder and, if appropriate, D) additives, the following relationship being true for the d? values according to Rosin-Rammler-Sperling-Bennet of the wood particles A) and of the particles of the filler B): d? of the particles A) ?2.5×d? of the particles B).

Abstract: Process for the preparation of etherified melamine/formaldehyde condensates, in which first a methylolation of melamine with a formaldehyde component in the molar ratio of from 1:6 to 1:15, preferably at a pH of >7, is carried out. This is followed by an etherification of the resulting hydroxymethylation intermediate in the presence of a C1-C20-alkyl, preferably of a C1-C6-alcohol, particularly preferably of a C1-C4-alcohol, at a pH of <4.5, and subsequently by at least one distillation step in order to remove in particular methanol from the system, the pH of >9.5 being established before, during and/or after the distillation. According to the invention, a plurality of hydroxymethylation, etherification and distillation steps follow in order to achieve an etherified melamine/formaldehyde condensate which is distinguished by a high degree of hydroxymethylation, a high solids content and a low viscosity.

Abstract: The present invention relates to new condensation resins of urea, formaldehyde, and CH-acidic aldehydes, to methods for preparing them, and to their use.

Abstract: The invention relates to a condensation product obtainable by reaction of a1) at least one bicyclic or polycyclic aromatic or heteroaromatic, where the bicyclic or polycyclic aromatic or heteroaromatic is substituted by at least one carboxyl group (—COOH), and where the carboxyl group can be present in salt form, a2) at least one carbonyl compound, a3) if appropriate at least one sulfonating agent, a4) at least one urea derivative, and a5) if appropriate at least one further aromatic or heteroaromatic, or a physiologically tolerable salt thereof.

Abstract: The present invention relates to lignocellulose materials which comprise A) 30 to 98 wt % of one or more lignocellulosic substances, B) 1 to 25 wt % of expanded plastics particles having a bulk density in the range from 10 to 150 kg/m3, C) 1 to 50 wt % of a binder selected from the group consisting of amino resin, phenol-formaldehyde resin, organic isocyanate having at least two isocyanate groups, or mixtures thereof, optionally with a curing agent, and D) 0 to 68 wt % of additives, wherein component B) or the original expandable plastics particles are coated with at least one coating material before, during, or after expansion.

Abstract: A process for the production of a lignocellulose-containing material, in which, based in each case on the lignocellulose-containing material: A) from 30 to 95% by weight of lignocellulose particles; B) from 1 to 25% by weight of expanded plastic particles having a bulk density in the range from 10 to 150 kg/m3; C) from 1 to 50% by weight of a binder selected from the group consisting of aminoplast resin, phenol-formaldehyde resin and organic isocyanate having at least two isocyanate groups, and optionally D) additives are mixed and are then pressed at elevated temperature and under elevated pressure, wherein the component B) comprises a curing agent for the component C).

Abstract: A process for the production of a lignocellulose-containing material, in which, based in each case on the lignocellulose-containing material: A) from 30 to 95% by weight of lignocellulose particles; B) from 1 to 25% by weight of expanded plastic particles having a bulk density in the range from 10 to 150 kg/m3; C) from 1 to 50% by weight of a binder selected from the group consisting of aminoplast resin, phenol-formaldehyde resin and organic isocyanate having at least two isocyanate groups, and optionally D) additives are mixed and are then pressed at elevated temperature and under elevated pressure, wherein the component B) comprises a formaldehyde scavenger.

Abstract: The present invention relates to lignocellulosic materials having a core and two outer layers, comprising, preferably consisting of, in the core A) 30 to 98% by weight of lignocellulose particles, B) 0 to 25% by weight of expanded plastics particles having a bulk density in the range from 10 to 150 kg/m3, C) 1 to 50% by weight of one or more binders selected from the group consisting of aminoplast resin, phenol-formaldehyde resin, and organic isocyanate having at least two isocyanate groups, and D) 0 to 10% by weight of additives and in the outer layers E) 70 to 99% by weight of lignocellulosic particles, fibers or mixtures thereof, F) 1 to 30% by weight of one or more binders selected from the group consisting of aminoplast resin, phenol-formaldehyde resin, and organic isocyanate having at least two isocyanate groups, and G) 0 to 10% by weight of additives in which 2% to 30% of the lignocellulose particles A) have been replaced by treated pulps, treated natural fibers, synthetic fibers or mixtures thereo

Abstract: The invention relates to particulate aminoplastic material composed of at least one aminoplastic, where the specific surface area of the particles is from 1 to 500 m2/g, and the average diameter of the particles is from 5 to 500 ?m. The invention further relates to a process for producing said particulate aminoplastic material, to a molding which comprises particulate aminoplastic material, and also to a production process for the molding, and to the use of the particulate aminoplastic material and of the molding, for example as plastics membrane in batteries.

Abstract: The present invention relates to the speeded curing of a composition comprising an epoxy compound, an amino or anhydride hardener and a high-branched polyether amine accelerant. The high-branched polyether amine may have terminal hydroxyl groups (polyol) and/or amino groups (amino modified). The amino-modified high-branched polyether amines are obtainable by subsequently modifying the terminal hydroxyl groups of high-branched polyether amine polyols.

Abstract: The present invention relates to new condensation resins of urea, formaldehyde, and CH-acidic aldehydes, to methods for preparing them, and to their use.

Abstract: The present invention relates to light wood-base materials comprising from 30 to 92.5% by weight, based on the wood-base material, of wood particles, the wood particles having a mean density of from 0.4 to 0.85 g/cm3, from 2.5 to 20% by weight, based on the wood-base material, of polystyrene and/or of styrene copolymer as a filler, the filler having a bulk density of from 10 to 100 kg/m3, and from 5 to 50% by weight, based on the wood-base material, of a binder, the mean density of the light wood-base material being less than or equal to 600 kg/m3.

Abstract: A process for the production of a lignocellulose-containing substance having an average density in the range from more than 600 to 900 kg/m3, in which, in each case based on the lignocellulose-containing substance: A) from 30 to 95% by weight of lignocellulose particles; B) from 1 to 25% by weight of expanded plastics particles having a bulk density in the range from 10 to 100 kg/m3; C) from 3 to 50% by weight of a binder selected from the group consisting of aminoplast resin, phenol-formaldehyde resin and organic isocyanate having at least two isocyanate groups and, if appropriate D) additives, are mixed and then pressed at elevated temperature and under elevated pressure.

Abstract: A process for the production of leather using one or more reaction products of (a) triamines or higher amines with (b) at least one compound of the general formula I A1-R1??I where R1 is selected from hydrocarbon radicals having 10 to 5000 carbon atoms, straight-chain or branched, saturated or having from one to three C—C double bonds, and A1 from groups capable of reacting with amines.

Abstract: A process for the production of a light lignocellulose-containing substance having an average density in the range from 200 to 600 kg/m3, in which, in each case based on the lignocellulose-containing substance: A) from 30 to 95% by weight of lignocellulose particles; B) from 1 to 25% by weight of expanded plastics particles having a bulk density in the range from 10 to 100 kg/m3; C) from 3 to 50% by weight of a binder selected from the group consisting of aminoplast resin, phenol-formaldehyde resin and organic isocyanate having at least two isocyanate groups and, if appropriate D) additives are mixed and then pressed at elevated temperature and under elevated pressure, wherein the expanded plastics particles are obtained from expandable plastics particles by expansion and the expanded plastics particles thus obtained are further used without further intermediate steps for the production of the light lignocellulose-containing substance.

Abstract: A process for preparing polyester alcohols by condensation of polytetrahydrofuran with aromatic dicarboxylic acids and/or their anhydrides and/or their esters, preferably isophthalic acid, phthalic acid and terephthalic acid and more preferably isophthalic acid, in the presence of a transesterification catalyst in a multi-stage operation at different pressure levels with at least one reaction stage at atmospheric pressure and at least one reaction stage at reduced pressure, where distillate is removed from the reaction system, comprises deactivating the catalyst after the polycondensation by using phosphoric acid in a molar ratio of 1:1 to 1:3.5 for catalyst to phosphoric acid.

Abstract: The invention relates to a process for preparing polymethylolated melamine and polymethylolated melamine compounds polyetherified with alkanol, wherein the methylolation reaction is carried out in a kneading reactor.