Abstract:
A process for the production of an OEM base coat/clear top coat multi-layer coating wherein a waterborne base coat composition is spray-applied by electrostatically-assisted high speed rotary atomization, wherein the waterborne base coat composition comprises binder solids comprising 20 to 100 wt.% of an aqueously dispersed polyurethane urea resin with a carboxyl number of 10 to 50 mg KOH/g, which is made by a process comprising the steps: (i) producing a non-gelled polyurethane prepolymer with a free isocyanate group content of 0.5 to 4.5 wt.% by reacting polyol, a compound having one alcoholic hydroxyl group and a molar mass of 32 to 300, a polyhydroxycarboxylic acid and a polyisocyanate, in the presence of ketone and/or other inert organic solvent, (ii) if not already effected, neutralizing the carboxyl groups of the polyhydroxycarboxylic acid with a tertiary amine, (iii) converting the ketone and/or other inert organic solvent solution into an aqueous dispersion by mixing with water, and (iv) chain extending the polyurethane prepolymer by reacting the free isocyanate groups thereof with a compound having at least two amino groups capable of addition to isocyanate groups to form urea groups, wherein the at least one compound having one alcoholic hydroxyl group and a molar mass of 32 to 300 is used in a proportion of 0.02 to 0.15 equivalents relative to the NCO provided by the polyisocyanate employed in step (i).
Abstract:
The invention relates to a process for multilayer coating of substrates comprising the steps: 1. applying a base coat layer of a water-based colour- and/or special effect-imparting base coat composition onto an optionally pre-coated substrate, 2. applying a clear coat layer of a transparent clear coat composition onto the base coat layer and 3. curing the clear coat layer applied in step 3, wherein the water-based colour- and/or special effect-imparting base coat composition comprises: A) at least one water-dilutable polyurethane hybrid binder, obtained by polymerization of at least one polyurethane macromonomer, containing at least one lateral and/or terminal vinyl group, in the presence of at least one unsaturated monomer copolymerizable with the polyurethane macromonomer, B) optionally at least one curing agent, and C) at least one pigment, wherein the at least one polyurethane macromonomer is based on at least one polyhydroxyl compound, said polyhydroxyl compound comprises at least 50 % by weight of at least one polycarbonate polyol, which is liquid at 20C, the % by weight are based on the total amount of the polyhydroxyl compound.
Abstract:
The present invention relates to a powder coating composition comprising at least one fluoro-modified polyurethane (meth)acrylate prepared from an isocyanate component, at least one hydroxy-C2-C4-alkyl (meth)acrylate and an alcohol component comprising at least one perfluoroalkyl alcohol are reacted stoichiometrically with one another, providing the powder coating composition a fluorine content (calculated as elementary fluorine with molecular mass 19) in a range of 0.1 to 3 wt%, the wt% based on the total weight of the powder coating composition. The powder coating composition according to the invention based on the fluoromodified polyurethane (meth)acrylate provides a highly improved flow, chemical resistance and particularly an improved and sustainable self-cleaning effect of the coatings.
Abstract:
A clear coat coating composition with a resin solids content comprising a hydroxyl-functional binder component and a crosslinker component, wherein the hydroxyl-functional binder component comprises at least one polyester polyol binder comprising at least one aliphatic polyether polyol having -OCH 2 C n F 2n+1 groups with n = 1 or 2 as a building block, and wherein said -OCH 2 CnF 2n+1 groups provide the clear coat coating composition with a fluorine content of 0.1 to 3 wt.%, calculated on the resin solids content of the clear coat coating composition.
Abstract translation:一种具有树脂固体含量的透明涂料组合物,其包含羟基官能粘合剂组分和交联剂组分,其中所述羟基官能粘合剂组分包含至少一种聚酯多元醇粘合剂,其包含至少一种脂族聚醚多元醇,其具有-OCH 2 C n F 2n + n = 1或2作为结构单元,并且其中所述-OCH 2 C n F 2n + 1组提供透明涂层涂料组合物,其氟含量为0.1至3重量%,以透明涂层涂料组合物的树脂固体含量计算。
Abstract:
A coating composition, in particular a clear coat coating composition, with a resin solids content comprising a cross-linkable binder component having functional groups with active hydrogen and a cross- linker component, wherein the cross-linker component comprises at least one isocyanate-functional urethane component comprising at least one aliphatic polyether polyol having -OCH 2 C n F 2n+1 groups with n = 1 or 2 as a building block, and wherein said -OCH 2 C n F 2n+1 groups provide the clear coat coating composition with a fluorine content of 0.1 to 3 weight %, calculated on the resin solids content of the coating composition.
Abstract translation:一种涂料组合物,特别是透明涂层涂料组合物,其中树脂固体含量包含具有官能团的可交联粘合剂组分与活性氢和交联剂组分,其中该交联剂组分包含至少一种异氰酸酯官能 包含至少一种含有n = 1或2的具有-OCH 2 C n F 2n + 1的脂族聚醚多元醇作为结构单元的氨基甲酸酯组分,并且其中所述-OCH 2 C n F 2n + 1组提供了氟含量为0.1至3重量%的透明涂料组合物, ,根据涂料组合物的树脂固体含量计算。
Abstract:
The invention relates to water-based coating compositions comprising A) at least one water-dilutable polyurethane hybrid binder, obtained by polymerization of at least one polyurethane macromonomer, containing at least one lateral and/or terminal vinyl group, in the presence of at least one unsaturated monomer copolymerizable with the polyurethane macromonomer, B) optionally at least one curing agent, and C) at least one pigment, characterized in that, the at least one polyurethane macromonomer is based on at least one polyhydroxyl compound, said polyhydroxyl compound comprises at least 50 % by weight of at least one polycarbonate polyol, which is liquid at 20C, the % by weight are based on the total amount of the polyhydroxyl compound.
Abstract:
An aqueous coating composition with resin solids consisting of 60 to 80 wt.% of binder solids and 20 to 40 wt.% of cross-linker solids, the binder solids consisting of 20 to 100 wt.% of a urethanized polyester binder having a hydroxyl number of 50 to 250 mg KOH/g and a carboxyl number of 10 to 50 mg KOH/g, and 0 to 80 wt.% of one or more further binders, the sum of the respective wt.% in each case equalling 100 wt.%, wherein the urethanized polyester binder is an esterification product made of a polyurethane resin with a carboxyl number of 50 to 200 mg KOH/g and a polyester polyol with a hydroxyl number of 70 to 300 mg KOH/g.
Abstract:
A clear coat coating composition with a resin solids content comprising a hydroxyl-functional binder component and a crosslinker component, wherein the hydroxyl-functional binder component comprises at least one hydroxyl-functional urethane component comprising at least one aliphatic polyether polyol having -OCH 2 C n F 2n+1 groups with n = 1 or 2 as a building block, and wherein said -OCH 2 C n F 2n+1 groups provide the clear coat coating composition with a fluorine content of 0.1 to 3 wt.%, calculated on the resin solids content of the clear coat coating composition.
Abstract translation:一种透明涂料组合物,其具有包含羟基官能粘合剂组分和交联剂组分的树脂固体含量,其中所述羟基官能粘合剂组分包含至少一种羟基官能聚氨酯组分,其包含至少一种具有-OCH 2 C n F 2n + 1基团 其中n = 1或2作为结构单元,并且其中所述-OCH 2 C n F 2n + 1基团提供透明涂层组合物,其氟含量为0.1至3重量%,以透明涂层涂料组合物的树脂固体含量计算。
Abstract:
A clear coat coating composition with a resin solids content comprising a hydroxyl-functional binder component and a crosslinker component, wherein the clear coat coating composition comprises at least one aliphatic polyether polyol additive having -OCH 2 C n F 2n+1 groups with n = 1 or 2, wherein the -OCH 2 C n F 2n+1 groups provide the clear coat coating composition with a fluorine content of 0.1 to 3 wt.%, calculated on the resin solids content of the clear coat coating composition.
Abstract translation:一种透明涂料组合物,其具有包含羟基官能的粘合剂组分和交联剂组分的树脂固体含量,其中所述透明涂层涂料组合物包含至少一种具有n = 1或2的-OCH 2 C n F 2n + 1基团的脂族聚醚多元醇添加剂,其中 基于透明涂层涂料组合物的树脂固体含量,-OCH 2 C n F 2n + 1组提供透明涂层组合物,氟含量为0.1至3重量%。
Abstract:
This invention relates to a coating composition, a method for coating of a metallic substrate as well as the use of a chain-extended aspartate prepolymer for improving the early hardness of the coating composition and in a two-component coating composition.