Abstract:
A process for the production of a dark-color multi-layer coating, comprising the successive steps: (1) applying an NIR-opaque coating layer A′ from a pigmented, solvent- or waterborne coating composition A to a substrate, (2) applying a coating layer B′ from a pigmented coating composition B onto the substrate provided with coating layer A′, wherein the pigment content of coating composition A consists 90 to 100 wt. % of at least one aluminum flake pigment and 0 to 10 wt. % of at least one further pigment, which is selected in such a way that NIR-opaque coating layer A′ exhibits low NIR absorption, wherein the pigment content of coating composition A comprises
Abstract translation:一种用于生产深色多层涂层的方法,包括以下连续步骤:(1)将不透明涂层A'从着色的溶剂或水性涂料组合物A施加到基材上,(2) 将涂层B'从着色涂料组合物B涂布到具有涂层A'的基材上,其中涂料组合物A的颜料含量为90-100重量份。 至少一种铝片状颜料的%和0〜10重量% 至少一种另外的颜料的%,其以使得NIR不透明涂层A'显示低NIR吸收的方式选择,其中涂料组合物A的颜料含量包含<90wt。 10至80nm厚的铝薄片颜料的%,其中涂料组合物B的颜料含量为50至100wt。 %的至少一种低NIR吸收的黑色颜料和0至50wt。 至少一种另外的颜料的%,其以这样的方式选择,使得涂层B'显示低的近红外吸收,并且深色多层涂层表现出亮度L *(根据CIEL * a * b *,DIN 6174),其以相对于垂直角45度的照明角度和与镜面成45度的观察角度测量为至多10个单位,其中, %等于100wt。 %,并且其中涂层A'和B'固化。
Abstract:
The invention relates to a method for producing polymer-coated metal foils, comprising the following steps: (a) applying a base layer (7) onto a support foil (3), with a dispersion (5) which comprises electrolessly and/or electrolytically coatable particles in a matrix material, (b) at least partially drying and/or at least partially curing the matrix material, (c) forming a metal layer (19) on the base layer (7) by electroless and/or electrolytic coating of the base layer (7) comprising the electrolessly or electrolytically coatable particles, (d) applying a polymer (23) to the metal layer (19). Furthermore, the invention relates to a use of the polymer-coated metal foil for the production of printed circuit boards.
Abstract:
This invention relates to a method for forming a multi-layer coating on a vehicle body, comprised of applying primer coating, base coating, and clear coat layers in a wet-on-wet-on-wet manner, and simultaneously curing the applied three layers together in a single baking step. The primer layer comprises a film-forming binder (a) a caprolactone-modified linear acrylic polymer; and (b) an aminoplast resin crosslinking agent, wherein the composition is essentially free of crosslinked nonaqueous dispersion resin particles or crosslinked microgel resin particles or both. The resulting multi-layered coating film has excellent aesthetic appearance, strike-in resistance, chipping resistance, sag resistance, and film build even when formed in a three wet layered application method.
Abstract:
A coating line for a vehicle, which includes a station where an intercoating step is conducted, stations where a topcoating step is conducted, and a station that is disposed downstream from these stations and in which a baking/drying step is conducted. It further includes the following stations disposed in the following order downstream from these stations: a coating station where a coating step for applying a protective-layer-forming material to the surface of the coating is conducted; a sealing station where sheet joints are sealed with a sealing material; a sheet attachment station in which a bituminous sheet is attached to the vehicle in a given position; and a heating station where a heating step for fusion-bonding the bituminous sheet and drying the sealing material and protective-layer-forming material is conducted.
Abstract:
In at least one embodiment, the present invention relates to a method and system of painting an article having two or more base coats, and to articles prepared in accordance therewith. In at least one embodiment, the method comprises applying a primer composition to a first and second area of the article; applying a first base composition to the first area of the article; curing the primer composition and the first base composition to form a primer and a first base coat; masking at least a portion of the first base coat; applying a second base composition to the second area of the article; removing the masking; applying a clear coat composition to the first and second area of the article; and curing the second base and the clear coat compositions. In at least one embodiment, the article is a vehicle and the compositions are applied via automated spray equipment.
Abstract:
A process producing multi-layer coatings in light metallic color shades, comprising the successive steps: (1) applying a 5 to 20 μm thick base coat layer to a pre-coated substrate, (2) applying a clear coat layer onto the base coat layer, (3) jointly curing the base coat and clear coat layers, wherein the base coat layer is applied from an unmodified water-borne metallic base coat having a ratio by weight of pigment to resin solids of 0.3:1 to 0.45:1, wherein the pigment content consists 60 to 100% by weight of at least one non-leafing aluminum pigment with a platelet thickness over 100 to 500 nm and 0 to 40% by weight of at least one pigment different from aluminum pigments, wherein the pigment(s) different from aluminum pigments are selected in such a way that the multi-layer coating obtained exhibits a brightness L* (according to CIEL*a*b*, DIN 6174), of at least 80 units.
Abstract translation:一种以浅金属色调制造多层涂层的方法,包括以下连续步骤:(1)将5至20μm厚的底涂层施加到预涂底物上,(2)在底涂层上施加透明涂层 层,(3)共同固化底涂层和透明涂层,其中底涂层由未改性的水性金属底涂层涂覆,颜料与树脂固体的重量比为0.3:1至0.45:1, 其中颜料含量为60-100重量%的至少一种片状厚度超过100至500nm的非漂浮铝颜料和0至40重量%的至少一种不同于铝颜料的颜料,其中颜料( 选择不同于铝颜料的方法,使得获得的多层涂层具有至少80单位的亮度L *(根据CIEL * a * b *,DIN 6174)。
Abstract:
A first clear coating composition comprising (a) an acryl resin having a hydroxyl value of 110 to 160 mgKOH/g and an acid value of 5 to 35 mgKOH/g, (b) an acryl resin having a hydroxyl value of 10 to 150 mgKOH/g and an epoxy equivalent of 230 to 800 g/eq, and (c) a curing agent of a melamine resin, which has a solubility parameter (SP value) within a range of from 9.5 to 11.0, and which comprises no less than 50% by weight of an imino group-containing melamine resin. The composition is effective in a three coating and two baking (3C2B) coating process which includes applying a base coating composition, applying a first clear coating composition thereon by a wet-on-wet procedure, curing the coatings, applying a second clear coating composition thereon, and then curing the coating.
Abstract:
This invention relates to a method for forming a multi-layer coating, by sequentially applying a primer surfacer, a base coat composition, and a clear coat composition on an automotive substrate in a wet-on-wet-on-wet manner, and simultaneously curing the applied three layers together in a single baking step. The primer surfacer comprises: a film forming binder, a volatile organic liquid carrier, and pigment(s); and the binder contains about: 40 to 95% by weight of a highly branched acrylic polymer having a hydroxyl, carboxyl and/or other crosslinkable functional group monomer content of about 1 to 65%; and 5 to 60% by weight of an aminoplast resin crosslinking agent. The composition is essentially free of crosslinked nonaqueous dispersion resin particles or crosslinked microgel resin particles or both. The resulting multi-layered coating film has excellent aesthetic appearance, strike-in resistance, chipping resistance, sag resistance, and film build even when formed in a three wet layered application method.
Abstract:
A process for producing multi-layer coatings comprising a waterborne primer-surfacer layer and a topcoat applied thereto on substrates, in which a waterborne primer-surfacer layer is applied from a waterborne primer-surfacer to substrates and baked and then a topcoat is applied, wherein the waterborne primer-surfacer has a binder solids content with a hydroxyl number of 100 to 250 mg KOH/g and contains free or blocked polyisocyanate as a curing agent (crosslinking agent) for the hydroxy-functional binder(s) in a molar ratio of OH/NCO of more than 2:1 to 5:1, and wherein, after it has been applied and before baking, the waterborne primer-surfacer layer is allowed to evaporate for 30 to 300 seconds at 15 to 40° C.
Abstract:
A process for overcoating multicoat paint systems comprising a color and/or effect basecoat (A) produced from an aqueous basecoat material (A) and a clearcoat (B) produced from a liquid clearcoat material (B), comprises (1) applying by pneumatic spray application to the multicoat paint systems the extract, free from opaque pigments, of the aqueous basecoat material (A) or of a corresponding aqueous basecoat material, (2) flashing off and/or drying the resulting film (1) without curing it completely, (3) coating by pneumatic spray application at a reduced spraying pressure the resulting flashed off and/or dried film (2) with the aqueous basecoat material (A) or a corresponding aqueous basecoat material, (4) flashing off and/or drying the resulting aqueous basecoat film (3) without curing it completely, (5) coating the resulting flashed off and/or dried aqueous basecoat film (4) with a liquid clearcoat material, and (6) jointly curing the resulting clearcoat film (5), the aqueous basecoat film (4) and the film (1), and, where appropriate, any further uncured films that are present.