摘要:
The present invention relates to electrodeposition primer compositions comprising catalytically active core/shell particles CS. The electrodeposition primer compositions can be used more particularly for cathodic dip coating for the coating of automobile bodies or parts thereof.
摘要:
An integrated dual-cure coating material system which comprises two dual-cure multicomponent systems (A) and (B) which are composed predominantly or wholly of the same constituents and comprise in each case two components stored separately from one another,(I) one component containing (i.1) isocyanate-reactive functional groups and (i.2) reactive functional groups containing at least one bond which can be activated with actinic radiation, (i.3) flexibilizing structural units which as parts of three-dimensional networks lower their glass transition temperature Tg, and/or (i.4) hardening structural units which as part of three-dimensional networks raise their glass transition temperature Tg and (I1) one component containing (ii.1) free isocyanate groups, (ii.2) reactive functional groups containing at least one bond which can be activated with actinic radiation and (ii.3) flexibilizing structural units which as parts of three-dimensional networks lower their glass transition temperature Tg, and/or (ii.4) hardening structural units which as part of three-dimensional networks raise their glass transition temperature Tg, the dual-cure coating material system (B) having (a) overall a lower quantity of reactive functional groups containing bonds which can be activated with actinic radiation, and/or (b) overall a higher quantity of hardening structural units which as part of three-dimensional networks raise their glass transition temperature Tg, than the dual-cure coating material system (A); and its use.
摘要:
A coating material comprising (A) at least one kind of hydrophobic nanoparticles based on silica and (B) at least one kind of hydrophilic nanoparticles based on silica having a BET internal surface area of >300 m2/g; process for preparing it, and its use.
摘要:
Coating materials curable thermally and with actinic radiation, comprising (A) binder selected from the group consisting of random, alternating and block, linear, branched and comb polyaddition resins, polycondensation resins, and addition (co)polymers of olefinically unsaturated monomers, curable physically, thermally, with actinic radiation and thermally and with actinic radiation; and (B) from 0.2 to 20% by weight, based on the solids of the coating material, of at least one polyisocyanate which is free from blocking agents and by means of internal formation of uretdione groups is blocked up to a reelimination temperature of at least 160° C.; and their use for producing single-coat and multicoat clearcoat systems and multicoat color and/or effect paint systems or as adhesives and sealing compounds.
摘要:
Coating materials including at least one hydroxyl-containing (meth)acrylate (co)polymer, at least one carbamate- and hydroxyl-containing compound and at least one amino resin, where at least 10 equivalent % of the hydroxyl groups present in the (meth)acrylate (co)polymers and/or the carbamate and hydroxyl containing compound are primary hydroxyl groups. The coating materials after curing have a storage modulus E′ in the rubber-elastic range of at least 1.5*107 Pa, the storage modulus E′ having been measured by dynamic mechanical thermoanalysis (DMTA) on homogeneous free films with a thickness of 40±10 μm. Also included is a processes for preparing the coating materials and applications therefor.
摘要:
The invention relates to a component system for a two-component coating composition comprising a hydroxy-functional binder or a mixture of hydroxy-functional binders, tris(alkoxycarbonylamino)triazine or a mixture of tris(alkoxycarbonylamino)triazines and free isocyanates or a mixture of free polyisocyanates. It is characterized in that a first component (I) is formed at least from the hydroxy-functional binder or the mixture of hydroxy-functional binders and in that a second component (II) is formed at least from the free isocyanates or the mixture of free polyisocyanates, where the tris(alkoxycarbonylamino)triazine or the mixture of tris(alkoxycarbonylamino)triazines is alternatively a constituent of the first component (I), the second component (II) or both components (I) and (II).
摘要:
Disclosed is cathodic electrodeposition coating comprising at least one binder, at least one crosslinking agent, at least one bismuth compound comprising a basic bismuth nitrate, and a polymethylene urea. In one embodiment, the basic bismuth nitrate compound comprises a bismuth subnitrate of the empirical formula 4(BiNO3(OH)2)BiO(OH).
摘要:
Disclosed herein is a refinish sheet produced by (1) coating one side of a temporary carrier sheet (A) with at least one aqueous coating material (B) comprising at least one free-radically crosslinkable binder (B1) having a glass transition temperature of −70 to +50° C., an olefinically unsaturated double bond content of 2 to 10 eq/kg, and an acid group content of 0.05 to 15 eq/kg to produce at least one resultant layer (B); and (2) drying but not curing, or only part-curing, the at least one resultant layer (B) to produce at least one dried, uncured or part-cured layer (B). Also disclosed is a method of repairing a surface of a coated substrate using the refinish sheet.
摘要:
Process for producing multicoat color and/or effect paint systems comprising a color and/or effect basecoat (A) and a transparent topcoat (B) by a wet-on-wet method using a color and/or effect coating material (A) and a transparent coating material (B), the coating material (A) being prepared by separately preparing an aqueous, structurally viscous powder dispersion (A1), in an amount, based on (A), of 50% to 100% by weight, mixing it with the other constituents (A2) of the coating material (A), and homogenizing the resulting mixtures (A).
摘要:
Aqueous, structurally viscous powder dispersions curable by free-radical polymerization, substantially or entirely free from volatile organic compounds, and comprising as their disperse phase solid and/or highly viscous particles (A) which are dimensionally stable under storage and application conditions and have a z-mean average particle size as measured by photon correlation spectroscopy of 80 to 750 nm, the particles (A) comprising at least one free-radically crosslinkable binder (A1) having a glass transition temperature of −70 to +50° C., an olefinically unsaturated double bond content of 2 to 10 eq/kg and an acid group content of 0.05 to 15 eq/kg, in an amount, based on (A), of 50 to 100% by weight; process for their preparation, and their use.