Abstract: A thermosetting transparent coating material, its preparation and use. The coating includes (meth)acrylate (co)polymer having a number-average molecular weight of from 1,000 to 6,000 daltons, a glass transition temperature of ?15 to +70° C., and a hydroxyl number of from 80 to 200 mg KOH/g; polyester having a number-average molecular weight of from 800 to 6,000 daltons, a hydroxyl number of from 80 to 200 mg KOH/g and an acid number of from 1 to 50 mg KOH/g, comprising, based on the polyester, from 30 to 70% by weight of cycloaliphatic structural units; a blocked polyisocyanate in which the blocked polyisocyanate groups are attached to flexibilizing structural units which, as part of a three-dimensional network, lower its glass transition temperature; and blocked polyisocyanate in which the blocked polyisocyanate groups are attached to hardening structural units which, as part of a three-dimensional network, raise its glass transition temperature.

Abstract: Disclosed is a method for making nongelled addition polymers, especially carbamate functional additional polymers from linear unsaturated anhydrides. The method comprises reacting an unsaturated linear anhydride with an active hydrogen compound to provide two monomers comprising polymerizable C?C bonds, at least one of said monomers comprising an acid functional group; polymerizing the polymerizable C?C bonds of the two monomers to provide an acid functional polymerization product; and reacting the acid functional polymerization product with an epoxy functional compound to provide a nongelled addition polymer, wherein the disclosed method does not include a step comprising the physical removal of any acid functional monomers or polymerization products. Also disclosed is a curable coating composition containing the resulting carbamate functional polymer, as well as a coated substrate comprising a cured film resulting from the application and curing of the disclosed curable coating composition.

Abstract: Powder slurries curable thermally and with actinic radiation and comprising solid and/or highly viscous particles dimensionally stable under storage and application conditions, comprising (A) a binder free of carbon-carbon double bonds activatable with actinic radiation, comprising at least one (meth)acrylate copolymer containing on average per molecule at least one isocyanate-reactive functional group and at least one ion-forming group, (B) at least one blocked and/or part-blocked polyisocyanate, and (C) at least one olefinically unsaturated constituent which is free of isocyanate-reactive functional groups and contains on average per molecule more than four carbon-carbon double bonds activatable with actinic radiation; processes for preparing them, and their use.

Abstract: Disclosed is a method for making nongelled functional addition polymers from linear unsaturated anhydrides. The method subjects a linear unsaturated anhydride compound, an active hydrogen compound, and an epoxide compound to reaction conditions such that each of the following three reactions occur: (i) polymerization of polymerizable C?C bonds, (ii) ring opening of an anhydride functional group of the linear unsaturated anhydride compound by the active hydrogen compound to create an acid functional group, and (iii) reaction of the acid functional group resulting from the anhydride ring opening with the epoxide compound. At the time of reaction (iii), the acid functional group resulting from the anhydride ring opening may be selected from an ethylenically unsaturated monomer, a polymer, or both. In one embodiment, the method does not include the physical removal of any acid functional monomers or polymerization products. Also disclosed are a curable coating composition and a coated substrate.

Abstract: A pseudoplastic clearcoat slurry comprising solid and/or highly viscous particles which are dimensionally stable under storage and application conditions and which comprise as binders methacrylate copolymers containing in copolymerized form, based on a given methacrylate copolymer, at least 90% by weight of methacrylate comonomers, including (meth)acrylate comonomers having potentially ionic groups; process for preparing it, and its use.

Abstract: The invention relates to a powder-slurry that can be hardened by actinic radiation or by thermal means, comprising (I) components containing functional groups (A) which render them hardenable by actinic radiation and components containing complementary functional groups (B) which render them thermally hardenable, in a weight ratio of 50:1 to 1:50 and/or comprising (II) components containing the functional groups (A) and (B) which render them thermally hardenable and hardenable by actinic radiation in a molar ratio of 100:1 to 1:100.

Abstract: A mixture and method for preparing a composition curable thermally and with actinic radiation comprising a binder free from carbon-carbon double bonds activatable with actinic radiation, at least one blocked or unblocked polyisocyanate having at least one soft, flexibilizing segment, and at least one unsaturated polyfunctional urethane that is free from isocyanate-reactive functional groups and contains on average per molecule more than four carbon-carbon double bonds activatable with actinic radiation and at least one hardening segment.

Abstract: Aqueous dispersions curable thermally and with actinic radiation, comprising (I) liquid, and/or highly viscous solid particles dimensionally stable under storage and application conditions, comprising (IA) a binder free of carbon-carbon double bonds activatable with actinic radiation, comprising at least one (meth)acrylate copolymer containing on average per molecule at least one isocyanate-reactive functional group and at least one dispersive functional group, and (IB) at least one blocked polyisocyanate; (II) liquid, highly viscous and/or solid particles dimensionally stable under storage and application conditions, comprising at least one polyurethane (II) containing at least one isocyanate-reactive functional group, at least one functional group having at least one bond activatable with actinic radiation, and at least one dispersive functional group, and (III) at least one unsaturated constituent which is free of isocyanate-reactive functional groups and contains on average per molecule more than on

Abstract: A novel thixotropic agent comprising urea crystals which comprises at least one compound containing at least one functional group having at least one bond which can be activated with actinic radiation; a novel process for preparing a thixotropic agent comprising urea crystals by reacting at least one primary and/or secondary amine and/or water with at least one polyisocyanate in a liquid organic medium consisting of or comprising at least one compound containing at least one functional group having at least one bond which can be activated with actinic radiation; and the use of the thixotropic agents to prepare coating materials, adhesives and sealing compounds curable thermally and with actinic radiation.

Abstract: A pseudoplastic powder clearcoat slurry which is free from organic solvents and comprises solid and/or highly viscous, particles which are dimensionally stable under storage and application conditions and have an average size of from 0.8 to 20 ?m, at least 99% of the particles having a size ?30 ?m, which is preparable by 1) emulsifying an organic solution comprising binder and crosslinking agent to give an emulsion of the oil-in-water type, 2) removing the organic solvent or solvents, and 3) wet grinding the resulting slurry; and also the use of the powder clearcoat slurry to produce clearcoats for automotive OEM finishing and automotive refinish, for furniture coating and for industrial coating, including coil coating, container coating and the coating of electrical components.

Abstract: The invention relates to a coating material which can be hardened thermally and, optionally, by using actinic radiation. Said coating material contains: A) a binding agent comprising at least two functional groups (a1) which can enter into thermal cross-linking reactions with complementary functional groups (b1) in cross-linking agent (B), and; (B) at least one cross-linking agent comprising at least two functional groups (b1) which can enter into thermal cross-linking reactions with complementary functional groups (a1) in binding agent (A). At least one binding agent (A) contains, in an integrally polymerized manner, at least one olefinically unsaturated polysiloxane macromonomer which contains, in the statistical mean, at least 3.0 double bonds per molecule. The invention also relates to the use of the coating material for producing highly scratch resistant multilayer transparent lacquers.

Abstract: Powder clearcoat dispersions (powder slurry clearcoats) preparable by dispersing a powder clearcoat in an aqueous medium and wet milling the resulting powder slurry, at least one adduct of ethylene oxide and/or propylene oxide with at least one glycol being added to the powder slurry prior to wet milling; and the use of the powder slurry clearcoats for producing clearcoat finishes, especially as part of multicoat color and/or effect finishes.

Abstract: Aqueous coating material comprising (A) water-dispersible hydroxy-functional binder component containing urethane groups, (B) water-dispersible binder component containing urethane groups and blocked isocyanate groups, (C) water-dispersible amino resin, and optionally (D) water-dispersible hydroxy-functional polyester, the binder component (B) being preparable by (B1) preparing a polyurethane prepolymer containing isocyanate groups from at least one polyol and at least one polyisocyanate, (B2) reacting the polyurethane prepolymer (B1) containing isocyanate groups with a chain extender to give a hydroxyl-containing chain-extended polyurethane prepolymer, (B3) reacting the hydroxyl-containing chain-extended polyurethane prepolymer (B2) with at least one polyisocyanate to give a further polyurethane prepolymer containing isocyanate groups, and (B4) blocking some or all of the isocyanate groups of the chain-extended polyurethane prepolymer (B3) containing isocyanate groups with a blocking agent to give a polyuret

Abstract: The present invention relates to a process for producing single-coat or multicoat clearcoat finishes on primed or unprimed substrates by applying at least one powder coating dispersion, in particular a powder clearcoat slurry, to the substrate and then curing the resulting film(s) thermally and/or with actinic radiation, in which oxalic acid is added to at least one powder coating dispersion, in particular to a powder clearcoat slurry.

Abstract: The invention relates to an intrinsically viscous powder-slurry that can hardened by actinic radiation or optionally by thermal means, which contains solid spherical particles with an average particle size of 0.8 to 20 &mgr;m and a maximum particle size of 30 &mgr;m. The clear powder coating slurry contains 0.05 to 1 meq/g of ion-forming groups and 0.05 to 1 meq/g of neutralizing agents and has a viscosity of (i) 50 to 1000 mPas at a shear rate of 1000 s−1, (ii) 150 to 8000 mPas at a shear rate of 10 s−1, and (iii) from 180 to 12000 mPas at a shear rate of 1 s−1.

Abstract: Reactive compositions which consist of or comprise (A) at least one polyisocyanate whose isocyanate groups have been partly or fully blocked with propargyl alcohol, (B) at least one constituent which contains on average at least two isocyanate-reactive functional groups in the molecule, and (C) at least one catalyst which catalyzes the addition reaction of the isocyanate-reactive functional groups of (B) with the acetylenically unsaturated triple bond of the propargyl groups, and their use as coating materials, adhesives, and sealing compounds.

Abstract: A highly scratch-resistant multicoat paint system on a primed or unprimed substrate, comprising above one another in this order (A) a basecoat, (B) a first clearcoat as intermediate coat, and (C) a second clearcoat as the topmost coat, wherein the second clearcoat (C) is producible from a coating coating material (C) comprising (C1) at least one oligomer and/or polymer containing at least one pendant carbamate and/or allophanate group (c11), especially carbamate group (c11), of the formula: —O—(CO)—NH2—O—(CO)—NH—(CO)—NH2  and (C2) at least one crosslinking agent containing at least two functional groups (c21) which undergo crosslinking reactions with the carbamate group and/or allophanate group (c11); and also a process for producing highly scratch-resistant multicoat systems.

Abstract: A thixotroping agent comprising a reaction product of a isocyanto-containing compound and an amine. The isocyanto-containing compound comprises at least one of Ia) at least one isocyanate with at least one diisocyanate structural unit that has an unsaturated/aromatic or non-aromatic ring structure with 5-10 ring atoms and two isocyanate groups that are bound to the ring structure; Ib) at least one oligomer of the isocyanate Ia) with 2 to 10 isocyanate units; and Ic) at least one partially blocked isocyanate Ia) and/or at least one partially blocked oligomer Ib).

Abstract: The invention relates to the utilization of tricyclodecandimethanol for producing multilayer lacquers, in particular, multilayer transparent lacquer coatings, and as a binding agent in multilayer lacquers. The invention als relates to a coating substrance, especially transparent lacquer, containing at least one binding agent, at least one cross-linking agent and tricylodecandimethanol. In addition, the invention relates to a method for improving the adherence of the intermediate layer in multilayer transparent lacquer coatings.

Abstract: A pseudoplastic powder clearcoat slurry which is free from organic solvents and external emulsifiers and comprises solid spherical particles with an average size of from 0.8 to 20 &mgr;m and a maximum size of 30 &mgr;m, at least one ionic thickener and at least one nonionic associative thickener, the powder clearcoat slurry having an ion-forming group content of from 0.05 to 1 meq/g, a neutralizing agent content of from 0.05 to 1 meq/g, and a viscosity of (i) from 50 to 1 500 mPas at a shear rate of 1 000 s−1, (ii) from 150 to 8 000 mPas at a shear rate of 10 s−1, and (iii) from 180 to 12 000 mPas at a shear rate of 1 s−1.