摘要:
An object of the present invention relates to provide a method for forming a multi-layered coating film including a step of baking and curing an uncured intermediate coating film, an uncured base coating film and an uncured clear coating film at the same time which can give a multi-layered coating film excellent in gloss and in appearance, and to provide a multi-layered coating film obtained thereof.The present invention provides to a method for forming a multi-layered coating film in three-coat and one-bake coating method, using a solvent-borne intermediate coating composition containing an urethane-modified polyester resin (a) having a water tolerance value of 4 to 10 ml, a melamine resin (b) having a hexane tolerance value of 8 to 40 ml, a blocked isocyanate compound (c) and a nonaqueous dispersion resin (d), and a water-borne base coating composition containing an emulsion resin and a pigment.
摘要:
A method of forming a composite powder coating comprises depositing multiple layers of a powder coating composition onto a substrate, wherein adjacent layers are formed of a different powder coating composition; and curing the multiple layers of the powder coating composition in a single thermal curing step. The layers can be used to protect power generation equipment from aqueous corrosion, particle erosion, slurry erosion, fretting, and foulig.
摘要:
A process for multilayer repair coating, comprising the following steps:applying a first base coat layer of a conventional, water-borne base coat I containing at least one special effect pigment, applying a second base coat layer of a water-borne base coat II onto the resultant coating, wherein the water-borne base coat II for producing the second base coat layer is feathered out into the zones bordering the repair coating, and wherein this water-borne base coat II comprises A) at least one water-dilutable binder, B) at least one special effect pigment, C) at least one matting agent, D) water and E) optionally, conventional coating additives and/or organic solvents, with the proviso that the water-borne base coat II contains the at least one special effect pigment in a quantity of 25-75 wt. %, relative to the quantity of the at least one special effect pigment contained in water-borne base coat I, applying a clear coat layer of a transparent clear coat onto the resultant coating and curing the coating applied.
摘要:
A multi-component composite coating composition comprising an aqueous-based film-forming composition serving as a color coat or a basecoat and a polyepoxide-polyacid clearcoat is disclosed. The polyacid is made from ring opening a polybasic anhydride with a polyester polyol formed from reacting a polyol with a polycarboxylic acid having at least 20 contiguous carbon atoms between the carboxylic acid groups.
摘要:
The invention provides curable coating compositions which have improved comparability with other coating compositions and which provide improved scratch and mar resistance. The compositions comprise a film-forming component (A), a catalyst (B) for the film-forming reaction comprising one or more strong acids having a pKa of 2.5 or less, and a volatile catalyst carrier (C) comprising one or more tertiary amines having a boiling point of 100 degrees C. The film-forming component (A) comprises one or more crosslinking agents (b) at least one of which is an aminoplast curing agent (bi) having from 0.5 to 3.5 moles of NH per mole of aminoplast curing agent (bi). The invention also provides a method of making thermally cured films having improved scratch and mar as well as a method of making multilayer-cured films.
摘要:
A nanoparticle coated hydrogel may be formed by a method of electrospraying nanoparticles on to a hydrogel surface includes providing a drug and polymer combination in solvent to an inner capillary of a coaxial capillary spray nozzle. A coating with a drug that releases over time may be provided. Open and closed matrixes may be selectively formed to help modify time release periods.
摘要:
A method of powder coating thermo powder resins to non-conductive plastic substrates, in particular, to polyamide materials and other non-conductive plastic substrates. After cleaning the substrate, a water-based adhesive/primer is applied to the substrate and then cured to promote adhesion, protect the substrate from unwanted chemical reactions and increase the electrical surface conductivity of the substrate to provide to better coating and transfer efficiency of the thermosetting powder to the substrate.
摘要:
This invention provides a Water Resistant coating to all types and forms of wood products. The Aluminum Oxide Micro Dust provides a water repellant matrix that resists water. The composition of the coating provides increased abrasive wear properties, that extend the life of the coating and function of the coating. The coating enhances the Structural Strength, Sound Deadening and Insect/Disease resistance properties of wood.
摘要:
The method used for powder painting a manufactured article comprises the application of a first layer of powder paint, the fixing of the first paint layer, the application of a second layer of powder paint in a colour, tone and/or properties that are different from those of the first layer, the final baking of the first and second layers of paint, the rolling and/or brushing of the manufactured article to confer the required decoration thereon, and it is obtained by the continuous forward movement of at least one manufactured article and by performing by painting means and by rolling and/or brushing means respectively, during the rolling and/or brushing steps, a corresponding closed cyclic passage comprising the movement of the manufactured article for at least a first section during which it is subject to relative transfer between the painting means and the respective rolling and/or brushing means and the manufactured article.
摘要:
This invention is a method to coat an object or non-ferrous plate with a non-porous polymeric coating that has excellent adherence to the non-ferrous substrate. The process includes the following steps: conditioning or chemically treating a non-ferrous substrate surface; heating the substrate to a temperature above 180° C. but less than the ignition temperature of the plastic coating; applying a first layer of plastic material to the heated surface, immediately applying a second plastic layer onto the first plastic layer which is maintained at a minimum temperature of 180° C.; reheating the two plastic layers at a temperature from 180-280° C., to produce a smooth non-porous surface: and allowing the substrate and plastic coating to cool.