Abstract: The present invention relates to a process for the solvent-free production of polyisocyanate addition products, which are suitable as dispersing agents for incorporating solids into aqueous coating compositions, wherein the polyisocyanate addition products have a maximum content of 1% by weight of isocyanate groups and a content of 30 to 95% by weight of ethylene oxide units (molecular weight=44) present in the polyether chains of monofunctional alcohols B), and are prepared by reactingA) a polyisocyanate component having an average NCO functionality of 1.7 to 2.5 and an NCO content of 10 to 65% by weight with one or more of the following components:B) monohydric polyether alcohols having a number average molecular weight of 150 to 5000 and an ethylene oxide content of 40 to 99.

Abstract: The present invention relates to polyisocyanates containingi) 0.5 to 10 wt. % of amide and/or imide structural units (calculated as --CO--N.dbd., MW=42),ii) 5 to 20 wt. % of isocyanate groups (calculated as --NCO, MW=42) blocked with blocking agents which are monofunctional in the context of the isocyanate addition reaction andiii) 0 to 30 wt. % of chemically incorporated urethane groups (calculated as --NH--CO--O--, MW=59) obtained from the reaction of isocyanate groups with the hydroxyl groups of organic polyhydroxyl compounds.The present invention also relates to a process for the production of these lacquer polyisocyanates, their use as a binder for stoving lacquers optionally in combination with organic polyhydroxyl compounds and to their use as a binder component containing free hydroxyl groups and optionally blocked isocyanate groups by reacting and/or blending the polyisocyanates with organic polyhydroxyl compounds having a molecular weight of 62 to 350.

Abstract: The present invention provides mixtures containing polycarbonates, short glass fibers and polyether silicones as well as a method for preparing these mixtures.

Abstract: Novel mixtures containing in the anhydrous state at least one polysiloxane, at least one reactive extender, at least one unreactive pigment and/or an unreactive extender, at least one lamellar or fibrous solid, at least one reactive (oligo)silane, optionally together with further additives, to a production process and to the use thereof.

Abstract: A method for the preparation of water-soluble polyaddition compounds containing perfluoroalkyl groups by the reaction of a polyisocyanate component A) with a fluorine-containing alcohol component B), hydrophilic monohydric polyether alcohols C), isocyanate-reactive tertiary amines D) and optionally other isocyanate-reactive components E) at an NCO index of 80 to 200, the resulting polyaddition compounds and their use as dispersants for incorporating solid substances into aqueous paints and coating compositions.

Abstract: The present invention relates to novel polysiloxane-polyether-based copolymers which contain T units and comprise randomly linked organopolysiloxane units and linear polyether units, to a method for their preparation and their use.

Abstract: The present invention relates to a process for the preparation of polyurethanes suitable for use as thickeners for aqueous compositions by reacting at an NCO/OH equivalent ratio of 0.9:1 to 1.2:1a) a polyether component having an OH number of 10 to 30 mg KOH/g and obtained by the alkoxylation of a mixture ofa1) 30 to 80 mole % of a monofunctional alcohol or alkylphenol having 8 to 30 carbon atoms,a2) 2 to 10 mole % of sodium hydroxide or potassium hydroxide,a3) 10 to 60 mole % of water anda4) 0 to 10 mole % of a trihydric to hexahydric alcohol having a molecular weight of 92 to 600,with ethylene oxide or a mixture of ethylene oxide with up to 20 mole %, based on the total moles of alkylene oxides, of propylene oxide, in which the percentages of a1) to a4) add up to 100,withb) a polyisocyanate component containing at least one organic diisocyanate, optionally in admixture with up to 20 mole %, based on the total moles of component b), of higher than difunctional polyisocyanates.

Abstract: Water soluble or water dispersible polyurethane, which are suitable as thickeners for aqueous systems and prepared from a selected alcohol component a) based on a hydrophilic/hydrophobic mixture of alcohols and an isocyanate component b), and to their use for thickening aqueous systems.

Abstract: Novel mixtures containing at least one polysiloxane and at least one reactive filler, at least one pigment and/or unreactive filler and optionally other additives, their preparation and use in coating. Preferably they are largely free of organic polymers.

Abstract: Materials based on gypsum and organic additives are improved if they contain polyethers and, if desired, polymers. They can be used in a wide range of areas, for example as slabs in the building sector and for improving plasters, mortars, insulating materials and other construction compositions, casts and/or moulds.

Abstract: The present invention is directed to a thickener composition for thickening aqueous systems which contains a mixture ofa) a water-soluble or water-dispersible thickener containing urethane groups,b) a non-ionic emulsifier andc) a compound corresponding to the formula ##STR1## wherein R.sub.1 and R.sub.3 may be the same or different and represent hydrocarbon radicals andR.sub.2 and R.sub.4 may be the same of different and represent hydrogen or hydrocarbon radicals,Q represents alkylene oxide units obtained by the alkoxylation of alcohols with alkylene oxides having 2 to 4 carbon atoms, andn represents a number from 0 to 120.The invention also relates to the use of this thickener composition as a thickener for aqueous systems.

Abstract: Aqueous dispersions of fillers and/or pigments contain a dispersant combination of the following composition:A) 40 to 95 by weight of a water-soluble polymer,B) 0 to 60 by weight of a non-ionic alkylene oxide adduct having an average molecular weight of 200 to 100,000,C) 0 to 60% by weight of compounds of the formulae (I), (II) and/or (III) ##STR1## in which R.sub.1 represents an optionally substituted aliphatic, aromatic or araliphatic radical having 1 to 50 C atoms,z in each case independently of one another represents an integer from 1 to 10 andx represents hydrogen, a monovalent metal ion or an optionally substituted ammonium ion andD) 0 to 60% by weight of a compound of the formula (IV) ##STR2## in which Q represents hydrogen, ##STR3## in which Y in each case independently of one another represents hydrogen, a monovalent metal ion or an optionally substituted ammonium ion,R.sub.

Abstract: To produce mouldings for screening against electromagnetic radiation it is highly advantageous to use metal fibre-containing composite materials as obtained by impregnating a bundle of continuous metal filament fibres with a polymeric adhesion-promoting substance, sheathing the resulting compact precursor with a thermoplastic matrix and cutting the resulting extrudate of composite material into defined lengths.The composite materials can be used as such or together with thermoplastic granules.

Abstract: New polyisocyanate-polyaddition compounds, a process for their preparation and their use as wetting or dispersing agents for the incorporation of solids, in particular pigments, in lacquer or synthetic resin formulation.

Abstract: New alkoxylated aminopolyethers of the formula ##STR1## in which Q denotes a polyalkylene oxide radical which has a valency corresponding to n, which has a structure derived from an aminopolyether by removal of the terminal amino groups and which has an average molecular weight of 82 to 30,000,A.sub.1 and A.sub.2 denote identical or different mono- or polyalkylene oxide radicals of the type (RO).sub.y,whereineach radical R represents an alkylene radical with 2 to 40 C atoms andy represents an integer from 1 to 200,B.sub.1 and B.sub.2 denote identical or different mono- or polyalkylene oxide radicals of the type (R'O).sub.z,whereinat least 50% of the R' radicals represent a --CH.sub.2 --CH.sub.2 -- group,the other R' radicals which may be present each represent an alkylene radical with 3 to 40 C atoms andz represents an integer from 1 to 300,Z denotes hydrogen, ##STR2## wherein M.sup..sym. represents one equivalent of a metal ion or represents NH.sub.4.sup..sym.

Abstract: The new copolymers based on maleic anhydride and .alpha.,.beta.-unsaturated compounds contain, as bivalent structural units,A: 20 to 95 mole % of the structural element ##STR1## B: 0 to 40 mole % of the structural element ##STR2## C: and 0 to 40 mole % of the structural element ##STR3## the sum of the mole percents of (A), (B) and (C) being 100, and wherein R.sup.1 and R.sup.2 are identical or different and denote hydrogen, alkyl, optionally substituted aryl or the ester group ##STR4## in which R.sup.4 represents alkyl with 1 to 20 carbon atoms,R.sup.3 denotes an alkyl, cycloalkyl or optionally substituted aryl radical with 1 to 20 carbon atoms andX and Y are identical or different and represent the group--O--R.sup.5in whichR.sup.5 denotes hydrogen, a cation or alkyl with 1 to 40 carbon atoms, orX and Y represent the group--NHR.sup.3in which R.sup.3 has the abovementioned meaning,at least one of the radicals X and Y representing the group --O--R.sup.

Abstract: Aqueous coal slurries are prepared using aralkyl polyalkylene glycol ethers of the formula ##STR1## in which R.sup.1 represents an optionally substituted aryl radical,R.sup.2 and R.sup.3 are identical or different and denote hydrogen, alkyl or optionally substituted aryl,x represents a number in the range from 1 to 3,y represents a number in the range from 1 to 500, andR.sup.4 denotes hydrogen or one of the radicals ##STR2## in which M.sup..sym. represents a metal ion or ammonium,R.sup.5 denotes hydrogen, alkyl or optionally substituted aryl andR.sup.6 denotes hydrogen or alkyl, it being possible for the radicals R.sup.6 in the individual chain members of the polyalkylene glycol chain to be identical or different.

Abstract: Novel, finely divided, redispersible dispersions of high melting polyesters in low melting polyhydroxyl compounds are disclosed. Disclosed also is a process for their preparation and their use as polyol components containing fillers in the production of cellular or non-cellular polyurethanes.

Abstract: The instant invention is directed to a process for the production of diisocyanate mixtures of 2,4-diisocyanato toluene and 2,6-diisocyanato toluene, having from 36 to 90% by weight, based on the total mixture, of 2,6-diisocyanato toluene, comprising: trimerizing some of the isocyanate groups of a diisocyanate mixture of 2,4-diisocyanato toluene and 2,6-diisocyanato toluene, having a maximum content of 2,6-diisocyanato toluene of 35% by weight based on the total mixture and isolating from the reaction mixture which is thus obtained, a diisocyanate mixture having an increased content of 2,6-diisocyanato toluene.The invention is also directed to the use of these mixtures as synthesis components in the production of polyurethane elastomers.

Abstract: The invention relates to compositions containing both amino groups and hydroxyl and/or mercapto groups. The products are obtained by reacting relatively high molecular weight polyols and/or polythiols with less than equivalent quantities of isatoic acid anhydride.