Abstract: The present invention is directed to aqueous dispersion compositions in the form of aqueous, spreadable coating or printing pastes, characterized in that they contain(A) aqueous dispersions of polyurethanes (Aa) or mixtures of polyurethanes (Aa) and aqueous dispersions of poly(meth)acrylates (Ab),(B) carboxyl group-containing, aqueous thickener polymer solutions,(C) self-crosslinking polyorganosiloxane mixture and(D) crosslinking agents for the polyurethanes, for the carboxyl group-containing thickener polymers (B) and, optionally, for the poly(meth)acrylates.The present invention is also directed to a process for the preparation of these aqueous dispersion compositions and to their use for coating or printing substrates.

Abstract: This invention relates to coating compositions based on aqueous polyurethane dispersions, as well as the use of the coating compositions for the production of top coats or finishes on flexible substrates, particularly on PVC. The present coating agents contain an aqueous polyurethane dispersion having certain physico-chemical properties and the following composition of the solid substance:(A) from about 30 to 60%, by weight, of a hexane diol-1,6-polyester diol having a molecular weight of from about 500 to 6000;(B) up to about 8%, by weight, of a relatively low molecular weight triol having a molecular weight of from about 91 to 399;(C) from about 3 to 30%, by weight, of one or more mono- or poly-functional compounds bearing cationic and/or anionic groups and/or containing non-ionic polyoxyethylene segments;(D) from about 20 to 50%, by weight, of a diisocyanate corresponding to the following general formula: ##STR1## wherein R.sub.1, R.sub.2 and R.sub.

Abstract: This invention relates to PU-coating compositions containing solvent and combinations of crosslinking agents and to a process for producing polyurethane coatings on the principle of heat-activated, one-coat reverse coating by knife-coating the polyurethane coating composition onto a temporary support, drying the layer and laminating the textile substrates using preferably heated pressure rollers, followed by heating at elevated temperatures, the coating compositions used being solvent-containing, 20 to 60% compositions of a polyurethane mixture I containing(A) relatively soft polyurethanes and(B) relatively hard one-component polyurethanes and a crosslinker combination II containing(C) formaldehyde-urea and/or formaldehyde-melamine resins and crosslinking catalysts and(D) aliphatic and/or aromatic polyisocyanates, particularly blocked polyisocyanates,and, optionally, additions of soluble cellulose esters, handle-improving agents, optionally polysiloxanes containing oxyalkylene groups and other standard additi

Abstract: The present invention is directed to a high-solids polyurethane reactive coating system based on blocked NCO-prepolymers, polyamines and, optionally, solvents, said coating system containing a leveller agent comprising(1) a combination of from about 1 to 10% by weight of (A) vinyl polymers and copolymers based on (meth)acrylic acid esters and, optionally, other comonomers and from about 0.1 to 2% by weight of (B) polysiloxanes and/or polyalkylene oxide/polysiloxane copolymers,(2) from about 0.2 to 2.0% by weight of (C) poly(meth)acrylic acid (hydroxy)alkyl ester graft polymers on silicones,(3) mixtures of (A), (B) and (C) in the amounts specified,(4) mixtures of (A) and (C) in the amounts specified or(5) mixtures of (B) and (C) in the amounts specified.The present invention also relates to textile substrates coated on one or both sides or surface-textured sheet-form materials, particularly velour leather, coated with the above leveller-containing, high-solids polyurethane reactive coating systems.

Abstract: This invention relates to compositions of aqueous polyurethane dispersions containing polyurethanes having lateral OH-groups, optionally in admixture with PU-dispersions without any lateral OH-groups, which contain a combination of formaldehyde resins and blocked polyisocyanates as crosslinking agent and, optionally handle-improving agents, silicones and standard additives.The present invention also relates to the use of these compositions for the production of light coatings by the heat-activated, one-coat reverse coating process, in which the PU-composition is applied to a temporary support and dried, after which the (textile) substrate is laminated onto the dry polyurethane film at elevated temperature and pressure and the polyurethane laminate formed is subsequently crosslinked at a relatively high temperature.Mixed crosslinking with formaldehyde resins plus blocked polyisocyanates makes it possible to obtain coatings characterized by outstanding substrate adhesion and wet strength values.

Abstract: A process is described for the preparation of predominantly linear polyurethane solutions which comprises(a) reacting(A) an organic diisocyanate or diisocyanate mixture optionally containing small portions of a triisocyanate with(B) one or more polyhydroxyl compounds which are predominantly bifunctional and generally have molecular weights of from about 400 to 5000 and(C) optionally one or more chain lengthening agents having at least two isocyanate reactive hydrogen atoms and molecular weights of from about 32 to 399,wherein the proportion of isocyanate groups to the number of isocyanate-reactive hydrogen atoms is in the range of from about 0.9:1 to 1:0.9, and(b) when the polyurethane formed has reached the required viscosity, adding a monofunctional, low molecular weight oxime having a molecular weight of from about 73 to 325, preferably butanone oxime, to the reaction mixture as chain breaking agent in a quantity equivalent to or in excess of the equivalents of unreacted isocyanate groups.

Abstract: The present invention is directed to a process for the preparation of finely dispersed, easily spreadable, aqueous polyurethane reactive coating compositions suitable for coating textile sheet products, artificial leather or leather by the direct or transfer coating process by(i) forming an aqueous dispersion having a solids content of about 20-69 wt. % of blocked isocyanate prepolymers in the presence of from about 0.05-5% by weight of emulsifiers,(ii) adding during or after formation of the dispersion about 0.1 to 2.5% by weight of water soluble thickeners based on long chain polyethylene oxides, salts of poly(meth)acrylic acids or salts of carboxy methyl cellulose, up to 100% by weight of aqueous polymer solutions and/or polymer dispersions and optionally levelling agents, pigments, fillers or stabilizers and(iii) forming a coating composition having a viscosity of from about 3000 to 22,000 mPa.s/25.degree. C.

Abstract: This invention relates to new liquid or fluid polyamine/carbonic acid salt compositions free from crystalline content and their preparation from mixtures containing at least one aliphatic or cycloaliphatic polyamine, an aliphatic or cycloaliphatic hydroxyamine having at least one hydroxyl group and at least one amino group, and water and optionally diluents and/or conventional auxiliary agents and additives, by the addition of carbon dioxide. The proportion of polyamine to hydroxyamine is in the range of from about 95:5 to 10:90 % by weight, the quantity of water added is from about 0.01 to 5 mol of H.sub.2 O per amine equivalent (but at least 1 mol of water per mol of CO.sub.2) and the quantity of CO.sub.2 added is from about 0.01 to 0.99 mol of CO.sub.2 per amine equivalent.

Abstract: The invention relates to low-solvent, thermosetting reactive polyurethane coating compositions which are particularly resistant to light, oxidation and hydrolysis, do not crystallize or harden and comprise the following components:(A) a ketoxime-blocked NCO-prepolymer of1. 1 mole of 2- to 4-functional, relatively high molecular weight polyhydroxyl compounds comprising a polyester polycarbonate based on ester glycols of .epsilon.-caprolactone and 1,6-hexane diol;2. about 0.1 to 1.2 moles of low molecular weight polyols containing bis-carbazinic ester polyols corresponding to the following general formula ##STR1## in which R is a straight-chain and/or branched C.sub.1 -C.sub.5 -alkylene or hydroxyl-substituted alkylene radical, and low molecular weight diols and triols preferably containing tertiary amino groups, and3. aliphatic and/or cycloaliphatic diisocyanates in an NCO/OH ratio of from about 1.5:1 to 6:1 and4.

Abstract: This invention relates to coating agents and dressing agents for leather and leather substitutes with improved resistance to plasticizer migration, greater hardness and folding strength, a dry hand and resistance to aqueous alcoholic solutions, based on linear or only slightly branched thermoplastic polyurethane ureas built up from the following components(A) at least two macrodiols in a molar ratio of from about 1:6 to 6:1, one of which macrodiols(1) has an average molecular weight of from about 254 to 650 and contains at least one benzene, cyclohexane or cyclohexene ring, while(2) the second macrodiol has an average molecular weight in the range of from about 1200 to 3000 but has at least three times the molecular weight of A/l, and which contain(B) from about 0.

Abstract: The present disclosure is concerned with solvent free or very low solvent coating compositions suitable for use on flexible sheet form substrates particularly textile substrates. The composition comprises a urethane group-containing prepolymer with OH or CONH.sub.2 terminal groups mixed with a urea or melamine formaldehyde resin and a stable aqueous polymer dispersion or solution. The composition may also contain small amounts of an organic solvent. The coating can be applied to the substrate by direct or reverse coating techniques.

Abstract: This invention relates to compositions which are crosslinkable by heating to form polyurethane plastics for coating substrates, preferably textile sheet-form materials, in particular by the reverse coating process. For ecological and economic reasons, the coating compositions are free from organic solvent or contain at most 10% by weight of organic solvent and consist essentially of linear and/or branched urethane prepolymers having blocked terminal NCO-groups, aqueous dispersions of urethane polymers, vinyl polymers and/or diene polymers and/or aqueous polymer solutions and aliphatic and/or cycloaliphatic and/or aromatic amines containing at least two primary and/or secondary amino groups as latent crosslinkers. The chain extending or crosslinking reaction takes place at an elevated temperature in a coating tunnel after the coating has been applied to a substrate.

Abstract: This invention relates to the coating of sheet-form textile materials by the reverse process using polyurethanes which, for ecological and economic reasons, are dissolved in a single organic solvent.Segmented, substantially linear polyurethanes of dihydroxy polyesters and/or dihydroxy polyethers, aromatic and/or aliphatic diisocyanates and glycols and/or diamines as chain extenders, are used as surface and adhesive coatings in the form of solutions containing only a single organic solvent. To control coating properties, solutions used for adhesive coatings contain from 1 to 15% by weight based on the weight of the solution of water in addition to the organic solvent.

Abstract: The present disclosure is concerned with an improved method of reverse coating textile sheets with storage stable polyurethane top and adhesive coats which are formulated to have improved resistance to deformation under heat and pressure. At least one of the coats is formulated from a diisocyanate, a high molecular weight dihydroxy compound and a mixture of at least one low molecular weight diol with a low molecular weight monoalkanolamine. The coatings are applied in the usual reverse coating manner, i.e. the top coat is applied to a release substrate from solution; dried; the adhesive coat is applied from solution onto the dried top coat; and the textile substrate is laminated to the adhesive coat.

Abstract: This application relates to textile sheets which have been coated with polyurethanes and to a process for coating said textile sheets wherein a solution of polyurethane is applied as a top coat to a release substrate and then a bonding coat is applied before application of the textile material. The polyurethane which is used as a top coat is prepared by reacting a dihydroxyl compound with a molecular weight between about 600 and 4000 and a mixture of at least 2 diols with a molecular weight between 62 and 450 with at least one organic diisocyanate. The invention overcomes the difficulty of the top coat being lifted from the release substrate in numerous areas while other areas remain firmly attached giving the so-called "hoar-frost" effect.

Abstract: This invention relates to the coating of textile sheets with polyurethane pastes by the reversal process for producing very soft coating articles with a hand resembling that of napa leather. The particular properties of the coating are obtained by using bonding pastes which contain a mixture which can be cross-linked by the action of heat, consisting of polyurethane hydrazodicarbonamides and melamine-formaldehyde resins and/or urea-formaldehyde resins.

Abstract: Polyurethane coated textile sheets are disclosed and a reversal process for their preparation, wherein the textile sheets are coated by means of a top coat solution with a polymer mixture comprisingI. 50 to 90% by weight, based on the total polymer, of a substantially linear polyurethane which is substantially free of reactive end groups and which has been prepared by a process which comprises reacting an organic dihyroxyl compound of molecular weight 500 to 4000 and an organic diol of molecular weight 60 to 450 with an aromatic diisocyanate,Ii. 0 to 50% by weight of a vinyl copolymer, andIii. 1 to 50% by weight of a diene graft copolymer,Said polymer mixture having been applied to a release substrate prior to said coating process.

Abstract: This invention relates to the production of basic modified polyamides produced by the polycondensation of lactams or .omega.-aminocarboxylic acids with 0.1 to 5 mol of triamines of the formulaH.sub.2 N -- (CH.sub.2).sub.n -- NH -- (CH.sub.2).sub.n -- NH.sub.2where n equals 2 to 6 per 100 mol of lactam and 2 equivalents of carboxyl groups in the form of dicarboxylic acids and monocarboxylic acids per mol of triamine, using a molar ratio of monocarboxylic acids to dicarboxylic acids of between 10 : 1 and 1 : 20, which polyamides are dyed with reactive dyes.

Abstract: Polyurethane urea elastomers with novel dissolution behavior and which are synthesized from polycarbonate macrodiols, diisocyanates and diamines and which can be prepared and dissolved in aqueous solvents.These elastomers have the advantage of being less of a physiological hazard, more resistant to common solvents and require less emulsifiers and dispersion aid.

Abstract: Light stable polyurethane coatings with a considerably increased softening range and melting points coupled with improved resistance to perchlorethylene is obtained by using a chain extender comprising at least 80 mol % 1,4-diamino cyclohexane with a cis/transisomer ratio of from 10/90 to 60/40 .Iadd.and by using aliphatic or cycloaliphatic diisocyanates wherein such diisocyanates consist of at least 75 mol percent of 1-isocyanato-3-isocyanatomethyl-3,5,5-trimethyl cyclohexane.Iaddend..