Abstract: Aqueous polymer dispersions which have a long shelf life are obtainable by dispersing a mixture of 15-50% by weight of a copolymer (A) of(I) 1.5-15% by weight of copolymerizable compounds of 3 to 10 carbon atoms which contain a carboxyl or carboxylic anhydride group,(II) 30-98.5% by weight of C.sub.1 -C.sub.20 -alkyl acrylates or methacrylates,(III) 0-60% by weight of vinylaromatics,(IV) 0-20% by weight of copolymerizable carbonyl compounds and(V) 0-20% by weight of further copolymerizable organic compounds not stated under (I) to (IV) and50-85% by weight of a copolymer (B) of40-100% by weight of the monomers (II) and0-60% by weight of the monomers (III) to (V),with the proviso that the copolymers (A) and (B) together contain, as components, up to 65% by weight of alkyl (meth)acrylates (II) whose homopolymers have glass transition temperatures of less than 0.degree. C.

Abstract: A process for the preparation of stable dispersions of finely divided polyisocyanates, and the preparation of heat-crosslinkable isocyanate systems.Stable dispersions of finely divided polyisocyanates in a liquid which may or may not contain surfactants, protective colloids and other assistants are obtained by a method in which polyisocyanates are treated with a stabilizer in the presence of absence of the liquid, and the dispersions prepared from these are finely dispersed and/or milled under the action of high shear forces, if necessary with the addition of further stabilizer.These dispersions are useful as crosslinking agents, particularly for the preparation of heat-cross-linkable isocyanate systems.

Abstract: One-component polyurethane systems contain reaction products prepared in situ from(A) monoamines and/or polyamines and/or polymeric substances having one or more amino groups and(B) mono- and/or polyisocyanates and/or polymeric substances having one or more isocyanate groupsas viscosity-regulating substances.

Abstract: Epoxy resin materials essentially contain(A) an epoxy resin having a mean molecular weight of from 300 to 6,000 and on average from 1.5 to 3.0 epoxy groups in the molecule and(B) a polyacrylate resin obtainable by polymerization of essentially(b.sub.1) from 30 to 95% by weight of esters of acrylic acid and/or methacrylic acid and/or ethylacrylic acid with C.sub.1 -C.sub.20 -alcohols in the presence of(b.sub.2) from 5 to 70% by weight of carboxyl-containing copolymers having a mean molecular weight of from 500 to 20,000, obtainable by bulk or solution polymerizationand are used for heat-curable finishes, adhesive bonds and coatings.

Abstract: Pigment printing pastes and dyeing liquors containing finely divided solid dispersions of polyisocyanates which have been deactivated on the surface and have a melting point about 25.degree. C. and a particle size of from 0.1 to 15 .mu.m as crosslinking agents in an amount of from 0.1 to 6% by weight.

Abstract: Nonaqueous polymer dispersions are obtainable by polymerization of esters (A) of acrylic acid and/or methacrylic acid and/or ethylacrylic acid with C.sub.1 -C.sub.20 -alcohols in an organic solvent or a mixture of organic solvents in which the polymers formed are insoluble, and in the presence of copolymers (B) having a molecular weight of from 500 to 20,000 and obtainable by bulk or solution polymerization of monoolefinically unsaturated monomers at from 180.degree. to 400.degree. C. and from 1 to 200 bar, and the said dispersions are used for the production of finishes, coating materials and adhesives.

Abstract: Polymeric compositions which undergo crosslinking after drying at room temperature or elevated temperatures and are dissolved or dispersed in water are prepared by reacting polymeric organic compounds containing carbonyl and carboxyl groups with polyhydrazides in the presence of monoketones or monoaldehydes and are dissolved or dispersed in water by partially or completely neutralizing the carboxyl groups.They are useful as crosslinking agents and as binders for coatings on sheet-like substrates.

Abstract: Binders contain(A) copolymers of(a) from 5 to 70% by weight of monoesters of acrylic acid and/or methacrylic with dihydric to hexahydric C.sub.2 -C.sub.18 -alcohols,(b) from 0.1 to 80% by weight of esters or amides of acrylic acid and/or methacrylic acid with monofunctional C.sub.2 -C.sub.20 -alcohols or -amines which have an open-chain and/or cyclic urea group in the ester or amide radical,(c) from 1 to 60% by weight of esters of acrylic acid and/or methacrylic acid with monofunctional C.sub.1 -C.sub.20 -alcohols and(d) from 0 to 60% by weight of other comonomers, and(B) polyisocyanates, some or all of whose isocyanate groups may be blocked with CH--, NH--- or OH--acidic blocking agents and which have an isocyanate functionality of from 2.5 to 6.These binders are employed for the preparation of polyurethane finishes, which are used to produce coatings.

Abstract: Crosslinkable polymeric compositions which are dissolved or dispersed in an organic solvent, a process for their preparation and their use.These polymeric compositions which undergo crosslinking at room temperature or elevated temperatures after drying are obtained by reacting polymeric organic compounds containing carbonyl groups with polyhydrazides in the presence of monoketones or monoaldehydes.They are useful as crosslinking agents for polyepoxide compounds.

Abstract: Plastisols and organosols which have a long shelf life at room temperature, are based on a mixture of a finely divided synthetic resin with a plasticizer and may or may not contain additional pigments, fillers, volatile organic solvents and other assistants are prepared by a process in which an inert or reactive protective colloid or emulsifier, or a mixture of these, is added to a dispersion of a finely divided synthetic resin in a plasticizer, the dispersion as such not having a long shelf life at room temperature.These plastisols can be used as coating materials, sealants and adhesives.

Abstract: Reinforced cellular or noncellular molded polyurethane parts are prepared by heating a mixture of reinforcing materials and a heat-curable composition of polyisocyanates and polyols in an open or closed mold, said composition being storage-stable at room temperature and containing, optionally, auxiliaries and additives. In said composition, the polyisocyanate is dispersed in the form of discreet particles having particle diameters from 0.1 to 150 .mu.m in the polyol and the polyisocyanate particles are deactivated on their surfaces such that from 0.01 to 20 equivalent percent of the total available isocyanate groups are deactivated and such that the ratio of free isocyanate groups to hydroxyl groups is from 0.7:1 to 2.5:1.The polyurethane molded parts are suitable for use as self-supporting trim parts, reinforcement parts, or molded parts for various applications.

Abstract: The invention relates to compositions which are storage-stable at room temperature and which can be heat-cured to form molded parts having polyurethane, polyurea, and polyisocyanurate groups, said composition containing(a) one or more polyols having a molecular weight of from 400 to 10,000 and a functionality of from 2 to 8,(b) at least one polyfunctional compound having a molecular weight of 62 to 400 and being selected from the group consisting of aliphatic hydroxyl compound, cycloaliphatic hydroxyl compounds, aromatic amino compounds, or mixtures thereof, and(c) an organic polyisocyanate which is present in the form of discrete particles, which are deactivated on their surfaces and are dispersed in the liquid component, and depending on the product needs,(d) catalysts,(e) blowing agents,(f) reinforcing materials, and(g) auxiliaries and additives,The single-component systems are used for the preparation of cellular or noncellular, optionally reinforced polyurethane, polyurea, and/or polyisocyanurate group-c

Abstract: Mixtures which are liquid at room temperature, have a long shelf life and can be activated by heat and which comprise(A) polyols and/or polyamines, component (A) having a viscosity of less than 100 Pa.s at room temperature, the OH number being less than 112 and the mean functionality of the starting materials being from 1.1 to 6, and(B) polyisocyanates which are dispersed in (A), are stabilized to (A) as a result of a phase-separating deactivation at the surface of the dispersed particles, and are present in an amount such that there are from 0.1 to 2 equivalents of the total isocyanate present in the polyisocyanate per equivalent of hydroxyl or amino groups of component (A),are particularly useful for contact adhesives.

Abstract: In heat-setting mixtures which have a long shelf life at room temperature and comprise a polyisocyanate and one or more compounds which are reactive toward isocyanate groups, the polyisocyanate is present, in the form of discrete particles, in a saturated or unsaturated amino-, hydrazide-, mercaptan- and/or carboxyl-containing polymer, polycondensate or polyadduct which has a functionality of more than 1 and some of which can be replaced by a polyol, and the polyisocyanate particles are deactivated at their surface so that from 0.01 to 20 equivalent percent of the total amount of isocyanate groups present is deactivated. These mixtures are useful as coating compositions, adhesives and sealant materials, particularly as undersealants for motor vehicles.

Abstract: Plastisols useful for automobile undercoatings, anti-noise compositions, adhesives, sealing compositions and coatings for untreated, pretreated, phosphated, primed and prelacquered metal bases are improved by the addition of coke dust and coal dust fillers. The carbon dust fillers have a particle size of about 0.5 to 1000 microns and they are used in a concentration of about 9 to 90% by weight based on the total weight of plastisol and carbon dust. The carbon dust filled plastisols have a specific gravity of about 1.1 to 1.3.

Abstract: In heat-setting mixtures of a polyisocyanate with a polyol which have a long shelf life at room temperature, the polyisocyanate is present, in the form of discrete particles, in the polyol, and the polyisocyanate particles are deactivated at their surface. From 0.01 to 0.499 equivalent percent of the total amount of isocyanate groups present is deactivated by a primary or secondary amine or water, or from 0.01 to 20 equivalent percent of the said isocyanate groups is deactivated with a compound containing carboxyl, phenolic hydroxyl, amide or hydrazide groups.These mixtures are useful as coating compositions, adhesives and sealant materials, particularly as undersealants for motor vehicles.

Abstract: An aqueous cationic surface-coating system contains an olefinically unsaturated surface-coating binder having basic nitrogen groups, some or all of which are converted into salts with acid, a Co, Mn, Pb, Ce, Zr, Ca, Zn, Fe, Al, Cu, Ni or Cd complex, if appropriate in combination with an inhibitor and/or an initiator which supplies free radicals.This surface-coating system can be used for cathodic electrocoating or for conventional methods of surface-coating.

Abstract: Dispersions of finely divided synthetic resins in plasticizers, optionally with pigments, fillers and further auxiliaries, contain 0.01 to 30% by weight, relative to the total weight of synthetic resin and plasticizer, of an isocyanate-free reaction product of a monoamine, if appropriate combined with a polyamine compound, with a monoisocyanate and/or polyisocyanate or a polyamine compound with a monoisocyanate, if appropriate combined with a polyisocyanate.

Abstract: Plastisols useful for automobile undercoatings, anti-noise compositions, adhesives, sealing compositions and coatings for untreated, pretreated, phosphated, primed and prelacquered metal bases are improved by the addition of coke dust and coal dust fillers. The carbon dust fillers have a particle size of about 0.5 to 1000 microns and they are used in a concentration of about 9 to 90% by weight based on the total weight of plastisol and carbon dust. The carbon dust filled plastisols have a specific gravity of about 1.1 to 1.3.

Abstract: The invention relates to mixtures comprising of(a) a polyisocyanate in the form of discrete particles having diameters of 0.1 to 150 microns which are deactivated at their surface such that from 0.5 to 20 equivalent percent of the total isocyanate groups present are deactivated; and(b) a polyol.These mixtures are useful as coatings and adhesives as well as gasket materials and are particularly useful as undercoating materials for automotive vehicles.