Abstract: To provide a composition comprising a silsesquioxane compound that is capable of producing a coating film with excellent heat resistance and scratch resistance, and that has excellent compatibility with general polymerizable unsaturated compounds as well as polymerizable unsaturated compounds with high polarity. A silsesquioxane compound comprising organic groups each directly attached to a silicon atom of the compound, at least one of the organic groups being an organic group having one or more urethane bonds and one (meth)acryloyloxy group.

Abstract: This invention provides an effect pigment-containing, water-borne base coating composition comprising water-dispersible acrylic polymer particles (A) and effect pigment (B), the water-dispersible acrylic polymer particles (A) being obtained by emulsion polymerization of a radical-polymerizable unsaturated monomeric mixture including an amido-containing, radical-polymerizable unsaturated monomer having at least two radical-polymerizable unsaturated groups per molecule, and the effect pigment (B) being contained at a pigment weight concentration (PWC) within a range of 15-50%.

Abstract: An object of the present invention is to provide a method for forming a coating film that is capable of forming a coating film having excellent smoothness, distinctness of image and luster using an aqueous coating composition. The present invention provides a method for forming a coating film comprising: Step (1): forming an uncured coating film by applying to a substrate an aqueous coating composition that contains a copolymer of monomer components comprising one or more N-substituted (meth)acrylamide compounds, the copolymer being a graft copolymer comprising (A) a main chain having a lower critical solution temperature T1 in water within the range of 30 to 95° C., and (B) at least one hydrophobic side chain; Step (2): preheating the uncured coating film formed in Step (1) under heating conditions such that a preheating temperature T2 falls within the range of 60 to 100° C.

Abstract: An object of the invention is to provide a method for forming a multilayer coating film with excellent smoothness, distinctness of image, and water resistance, by a 3-coat 1-bake coating method, even when preheating after the application of an aqueous first colored coating composition is omitted.

Abstract: This invention discloses cationic electrodeposition paint compositions which comprise specific amino group-containing modified epoxy resin, specific xylene-formaldehyde resin-modified, amino group-containing epoxy resin and blocked polyisocyanate curing agent at specific blend ratios, and which can form coating film of excellent film thickness retention, finished appearance and electrocoatability on galvanized alloy steel sheet and of good corrosion resistance, even when the amount of volatile organic compound in the cationic electrodeposition paint is reduced.

Abstract: The present invention provides a coated product having excellent corrosion resistance and excellent finish by a 3-coat 1-bake method; the method including the steps of forming cured coating film (A1) comprising cationic electrodeposition coating composition (A) on a metal object to be coated; forming first colored coated film (B1) by coating first colored aqueous coating composition (B); forming second colored coated film (C1) by coating second colored aqueous coating composition (C) on uncured first colored coated film (B1); forming clear coated film (D1) by coating clear coating composition (D) on uncured second colored coated film (C1); and simultaneously curing uncured first colored coated film (B1), uncured second colored coated film (C1), and uncured clear coated film (D1).

Abstract: The object of the present invention is to provide a process for producing a metal substrate of superior corrosion resistance and finish, and a surface-treated metal substrate obtained by the process; and a surface treatment process that is capable of providing a metal substrate of superior corrosion resistance and finish, and a surface-treated metal substrate obtained by the process. Specifically, the present invention provides a process for producing a surface-treated metal substrate, comprising the steps of immersing a metal substrate for use as a cathode in a treatment composition (I) comprising water and metal component (A), and applying electric current thereto for 10 to 600 seconds by superposing an AC voltage (Va) with a frequency of 0.1 to 1,000 Hz and a peak-to-peak voltage of 1 to 40 V onto a 1 to 50 V DC voltage (Vd).

Abstract: The present invention provides a coating composition that is excellent in application workability, and that can form a cured coating film excellent in coating film performances such as scratch resistance, acid resistance, stain resistance, finished appearance, sagging resistance, etc. Specifically, the present invention provides a coating composition comprising an acrylic resin (A), a polyisocyanate compound (B) and a specific non-aqueous dispersion-type acrylic resin (C), wherein: the acrylic resin (A) is obtainable by copolymerization of a specific secondary hydroxyl group-containing monomer (a-1), a secondary hydroxyl group-containing polyoxyalkylene mono(meth)acrylate monomer (a-2), an isobornyl (meth)acrylate monomer (a-3) and at least one other copolymerizable unsaturated monomer (a-4), the unsaturated monomer (a-1) being used in an amount (mass) greater than that of the monomer (a-2).

Abstract: The present invention provides a cationic electrodeposition coating composition comprising: a specific amino group-containing modified epoxy resin (A); a blocked polyisocyanate curing agent (B); a water-soluble zirconium compound (C); and sulfamic acid, wherein the water-soluble zirconium compound (C) is present in an amount of 10 to 10,000 ppm, calculated as the mass of the elemental zirconium, relative to the mass of the cationic electrodeposition coating composition.

Abstract: The present invention provides a method for producing paint and a system for producing paint, which enable, in a paint-producing process, moderate stirring and dispersive mixing without causing entrainment of air bubbles, and are also economically advantageous and easier to clean. The system includes a tank 2 for receiving a paint material to be mixed and dispersed, a pump 3 for sucking part of the paint material in the tank 2 and discharging the sucked paint material into the remaining part of the paint material in the tank 2, and a flow path reduction area 5 disposed between the pump 3 and a paint material discharge outlet 4, the discharge outlet 4 being positioned so as to be submerged in the paint material in the tank. This achieves the stirring, mixing, and dispersion.

Abstract: To provide a composition comprising a silsesquioxane compound that is capable of producing a coating film with excellent heat resistance and scratch resistance, and that has excellent compatibility with general polymerizable unsaturated compounds as well as polymerizable unsaturated compounds with high polarity. A silsesquioxane compound comprising organic groups each directly attached to a silicon atom of the compound, at least one of the organic groups being an organic group having one or more urethane bonds and one (meth)acryloyloxy group.

Abstract: It is an object of the invention to provide a block polyisocyanate compound with excellent storage stability. The block polyisocyanate compound of the invention has the following construction. A block polyisocyanate compound having at least one block isocyanate group selected from the group consisting of a block isocyanate group represented by formula (I), block isocyanate group represented by formula (II) and block isocyanate group represented by formula (III), and a hydrophilic group.

Abstract: The invention provides a multilayer coating film-forming method that allows formation of a multilayer coating film with excellent smoothness, sharpness and water resistance, and which avoids or minimizes pinhole popping. The multilayer coating film-forming method of the invention has the following construction. A multilayer coating film-forming method comprising the following steps (1) to (4): step (1): coating an article to be coated with an aqueous first pigmented coating composition (X), step (2): coating the article to be coated, with an aqueous second pigmented coating composition (Y), step (3): coating the article to be coated, with a clear coating composition (Z), and step (4): heating an uncured first pigmented coating film, uncured second pigmented coating film and uncured clear coating film to cure them, wherein the aqueous first pigmented coating composition (X) contains a blocked polyisocyanate compound with a specific blocked isocyanate group.

Abstract: The present invention provides a method for forming a multilayer coating film, the method comprising (1) coating on a substrate an aqueous first colored coating composition containing a pigment and a hydroxy-containing polyester resin-containing film-forming resin having an acid value of 30 mg KOH/g or less; (2) coating an aqueous second colored coating composition containing a film-forming resin and a copolymer obtained by copolymerization of monomer components containing a polymerizable unsaturated monomer having a hydrophilic group, and a macromonomer having a polymerizable unsaturated group and a backbone having a number average molecular weight of 1,000 to 10,000, obtained by polymerization of a monomer component having 5 to 100 mass % of a polymerizable unsaturated monomer having a C4-24 alkyl group; (3) coating a clear coating composition; and (4) simultaneously curing the three coating films formed in steps (1) to (3).

Abstract: A method for creating a database for paint colors having a desired texture includes storing spectral reflectance data and micro-brilliance data of paint colors after associating each spectral reflectance data and each micro-brilliance data with a paint color code; storing texture evaluation values of sample paint colors after associating the each texture evaluation value with the paint color code; calculating characteristic quantities of the paint colors expressing textures using the spectral reflectance data and the micro-brilliance data, and storing the characteristic quantities after associating the each characteristic quantity with the paint color code; training a neural network using the characteristic quantities and the texture evaluation values of the sample paint colors as training data; and inputting characteristic quantities of the paint colors other than the sample paint colors into the neural network after the training, and storing output data after associating each output data with the paint colo

Abstract: This invention relates to a method of forming multilayer coating film of excellent appearance by 3-coat-1-bake system, comprising successively applying onto a coating object, a water-based intermediate paint, water-based base paint and a clear paint; and then simultaneously heat-curing the resulting 3-layered coating film.

Abstract: An object to be achieved by the present invention is to provide a method capable of forming a multilayer coating film having excellent smoothness, distinctness of image, and chipping resistance, by a 3-coat 1-bake process comprising successively applying an aqueous first colored coating composition, an aqueous second colored coating composition, and a clear coating composition to a substrate, and heat-curing the resulting three layers of the multilayer coating film all at once.

Abstract: To provide a composition comprising a silsesquioxane compound that is capable of producing a coating film with excellent heat resistance and scratch resistance, and that has excellent compatibility with general polymerizable unsaturated compounds as well as polymerizable unsaturated compounds with high polarity. A silsesquioxane compound comprising organic groups each directly attached to a silicon atom of the compound, at least one of the organic groups being an organic group having one or more urethane bonds and one (meth)acryloyloxy group.

Abstract: The invention provides water-based paint compositions capable of forming coating film of excellent smoothness, distinctness of image, water resistance and chipping resistance, which comprise aqueous film-forming resin, curing agent and crosslinked resin particles having a core/shell type multilayer structure composed of the core part of a (co)polymer obtained by (co)polymerizing a monomer component comprising 30-100 mass % of polymerizable unsaturated monomer having C4-22 alkyl group and 0-70 mass % of other polymerizable unsaturated monomer, and the shell part having a crosslinked structure.

Abstract: There is provided a process for formation of a multi-layered coating film, which includes sequentially coating a first colored coating composition, a second colored coating composition and a clear coating composition (C), and simultaneously heating and curing the obtained first colored coating film, second colored coating film and clear coating film to form a multi-layered coating film, where the first colored coating composition contains (a1) a polyester resin containing a hydroxyl group, which contains 1.0-8.