Abstract: A thermosetting composition which gives a cured product having excellent weatherability, chemical and physical properties, in particular acid resistance and abrasion resistance, at a relatively low temperature, which has superior storage stability, and which can be used as a one component coating material; a coating composition utilizing this thermosetting composition; a method of coating; and a coated article are provided. The thermosetting composition contains a resin having at least one functional group selected from the group consisting of a blocked hydroxyl group, blocked carboxylic acid, and an epoxy group. The thermosetting composition has a blocked hydroxyl group, blocked carboxylic acid, and an epoxy group.

Abstract: The present invention is to provide a low solvent content type-coating composition by which the resultant coatings with good scuff resistance or water resistance as well as good chipping resistance are produced, while the content of an organic solvent to be used can be much reduced. The low solvent content type-coating composition comprises a polyester oligomer having a hydroxyl group in an amount of 2.0 to 10.0 moles/Kg-resin, a number average molecular weight (Mn) of 300 to 1500, a weight average molecular weight (Mw) of 300 to 3000, and a ratio of a weight average molecular weight/a number average molecular weight (Mw/Mn) of 1 to 2.0, an amount of a modifying lactone being 31 to 85%, and an aliphatic hydrocarbon group of C4-22 which is not derived from lactones. The present invention is also to provide a process for coating a low solvent content type-coating composition on, for example, a base coating composition by a wet-on-wet coating.

Abstract: A surface coating applied to a subject surface includes an undercoating, a color base layer, coated over the undercoating layer, which contains a coloring material, and a color clear layer, coated over the color base layer, which contains a coloring dye of a hue within +/-10 from a hue of the coloring material of the base color layer on the 100-division Mansell hue ring.

Abstract: The present invention provides a curable resin composition incorporating an oligomer containing blocked hydroxyl group, an epoxy-group containing compound, hydrolytic silyl-group containing compound, and a dissociation catalyst and/or curing catalyst, each possessing a specific molecular weight; a paint which uses this resin composition as a binder; and a coat-finishing method which coat-finishes any desired material using the aforementioned resin composition and paint. According to the present invention, it is possible to reduce viscosity, and consequently increase the coat non-volatile content and hence improve acid resistance, abrasion resistance, and the like. In addition, according to the present invention, it is possible to obtain a curable resin composition, paint using this curable resin composition, and coat-finishing method for this paint in which the aforementioned resin and paint have an extremely high utility and possess a high solid content wherein air bubbles and drip-runs are not generated.

Abstract: The present invention relates to a low solvent content-type resin composition, a low solvent content-type coating composition containing such a resin composition as a binder, and a method for coating such a coating composition. The resin composition comprises an oligomer containing an alicyclic epoxy group in a molecule and having a number average molecular weight (Mn) of 300 to 2000, a weight average molecular weight (Mw) of 300 to 4000 and an Mw/Mn ratio of 1 to 2.5. The coating composition comprises such a resin composition and a cationic polymerization catalyst, wherein the content of an organic solvent content is 0 to 40 wt. %. Since the present composition contains a low molecular weight oligomer, the viscosity of the composition is low even though the solid content is high. Accordingly, the content of the organic solvent can be much reduced.

Abstract: A surface coating applied to a subject surface includes an undercoating, a color base layer, coated over the undercoating layer, which contains a coloring material, and a color clear layer, coated over the color base layer, which contains a coloring dye of a hue within +/-10 from a hue of the coloring material of the base color layer on the 100-division Mansell hue ring.The color clear layer may be applied with a paint spray device while rotating the subject surface around an axis and continuously moving the subject surface along the axis to form a spiral pattern of paint spray relative to and around the subject surface at regular pitches. Preferably, the ratio of each of the regular pitches to a width of the pattern of paint spray is less than 0.3.

Abstract: The present invention relates to a low solvent content type-coating composition which provides the resultant coating with improved surface appearance, acid resistance, alkali resistance, weathering resistance, scuff resistance and solvent resistance, while the content of an organic solvent of the coating composition can be much reduced to 0 to 30% at 25.degree. C. The low solvent content type-coating composition comprises a vinyl oligomer having a blocked carboxyl group and an additional group selected from an epoxy group, a silanol group, a hydrolyzable silyl group and an acid anhydride group. The vinyl oligomer has a number average molecular weight (Mn) of 600 to 2000, a weight average molecular weight (Mw) of 600 to 5000, and a ratio of a weight average molecular weight/a number average molecular weight (Mw/Mn) of 1.0 to 2.5. The blocked carboxyl group and an additional group may be present in the same or different vinyl oligomers.

Abstract: The coating method contains a spraying step in which a paint is sprayed at least on a coating substrate extending in an upward and downward direction to a film thickness thicker than causing sages of the sprayed paint. The coating substrate on which the paint is sprayed is rotated about the horizontal axis while the sprayed paint is dried until it does not sag any more.The coating apparatus includes a carriage conveying the coating substrate arranged to run along the conveying direction, and the carriage is provided with a supporting base for supporting the coating substrate rotatively about the horizontal axis. One embodiment for rotating the substrate supported by the supporting base is a spring that is disposed on the carriage to rotate the substrate by means of a restoring force produced by the spring. On the passage for conveying the carriage is disposed a force storing mechanism for storing the restoring force in the spring that released the restoring force.

Abstract: A method for repairing the surface of a coating involves the step of rubbing a compound having a Vickers hardness of above Hv 2,000 g/mm.sup.2 on the surface of the coating with a buff at a uniform surface pressure ranging from 2 to 20 g/cm.sup.2. This method permits the repair of scratched or scraped coating surfaces to produce coating surfaces of high quality without causing fade on the surfaces.

Abstract: The coating method contains a spraying step in which a paint is sprayed at least on a coating substrate extending in an upward and downward direction to a film thickness thicker than causing sags of the sprayed paint. The coating substrate on which the paint is sprayed is rotated about the horizontal axis while the sprayed paint is dried until it does not sag any more. The coating apparatus includes a carriage conveying the coating substrate arranged to run along the conveying direction, and the carriage is provided with a supporting base for supporting the coating substrate rotatively about the horizontal axis. One embodiment for rotating the substrate supported by the supporting base is a spring that is disposed on the carriage to rotate the substrate by means of a restoring force produced by the spring. On the passage for conveying the carriage is disposed a force storing mechanism for storing the restoring force in the spring that released the restoring force.

Abstract: A highly reflective surface coating on a substrate is formed by a coating method in a coating line. A paint is sprayed on the substrate in a viscosity of 18 seconds or lower when measured by means of Ford Cup #4 at 20.degree. C. in a film thickness thicker than a thickness at which the paint sags, the paint containing a solvent or solvents, having a boiling point as high as 110.degree. C. or lower in an amount of 50% by weight or higher.After completion of the spraying, a coat of the paint is dried by a drying step including sequential setting and baking steps.

Abstract: A method for repairing a high solid metallic coating on car bodies which involves applying at the area to be repaired an undercoat composition based on the same coating composition as used in the baked high solid metallic coating and with specified amounts of melamine resin and isocyanate compound added, the melamine resin having imino and methylol groups and the sum of the imino groups and methylol groups per triazine ring being 2.3 to 3.3, applying onto the undercoat a two-package urethane clear top coat composition on a wet-on-wet basis and finally drying the coats at 80.degree. C. or less.

Abstract: In a coating, line a first substrate such as a vehicle body, made of a steel plate, is coated separately from a second substrate made of a different material including a plastic, such as vehicle parts, i.e., bumpers and so on, and the parts are assembled with the vehicle body. The vehicle body and parts are coated separately to form each a highly reflective surface coating. The coating is implemented by a spraying step for spraying the paint on them to form a coat; and a drying step for drying the coat. The paint is sprayed in the spraying step in a film thickness which is thicker than a thickness at which the paint sags on a surface extending at least upwardly and downwardly.

Abstract: In the coating method containing a coating step for coating a substrate with a paint and a drying step for drying the paint coated thereon, the paint is sprayed on a side extending in an up-and-downward direction and a side extending a horizontal direction in the coating step in such a manner that it is coated in a given film thickness on the horizontally extending side and in a film thickness on the up-and-downwardly extending side, which is thicker than its sagging limit thickness in which it sags. The coating is effected such that the coating on the up-and-downwardly extending side is finished at the same time as or subsequent to the coating on the horizontally extending side.In the drying step, the substrate is rotation about its horizontal axis extending in a horizontal and longitudinal direction of the substrate during a period of time from before the paint sags to until it is cured to a sagless state.

Abstract: Disclosed is a coating method involving a coating step step and a drying step, in which the substrate is sprayed with a paint on its surface extending substantially upwardly and downwardly with the paint to form a coat in a thickness thicker than a thickness at which the paint starts sagging in the coating step and the coat formed on the substrate is dried at the drying step by rotating the substrate about its axis extending in a substantially horizontal and longitudinal direction of the substrate for a period of time ranging from the time when the paint coated starts sagging on the surface of the substrate extending substantially upwardly and downwardly to the time when the paint of the coated formed thereon achieves a substantially sagless state, the rotation of the substrate sprayed with the paint thereon being carried out at a speed which is high enough to rotate the substrate from a vertical position to a horizontal position before the paint coated thereon substantially sags due to gravity yet which is l

Abstract: A highly reflective surface coating is formed by spraying a paint on a substrate as a vehicle body in a thickness thicker than a thickness at which the paint sags and rotating the substrate about its horizontal axis at a speed between a lower limit and an upper limit in order to cause no sagging until the paint sprayed is cured to a sagless state.Before the paint is sprayed in that thickness, an edge portion of the substrate is lowered than other portions thereof, thus preventing a mass of the paint from swelling on a top coat at its edge portion and providing a good appearance on the surface coating.The lowering of the edge portion thereof is effected by lowering the substrate itself without any coat or by spraying the edge portion in a film thickness thinner than the other portion thereof.The coat sprayed with a paint containing a volatilizable solvent may be dried through sequential setting and baking steps, while a powder paint sprayed may be baked without setting.

Abstract: A coating method of an external surface of a vehicle body comprising steps of applying an urethane base coating material to a first area of the vehicle body to form an anti-chipping coating on the first area, applying an intercoating material including a solvent and an anti-sagging agent by spray to the the first area on which the anti-chipping coating has been formed and a second area of the vehicle body other than the first area to form an intercoating when the anti-chipping coating is in a wet condition. First intercoating material is applied to the first area to form one part of the intercoating. Second intercoating material is applied to the second area to form the other part of the intercoating. The first intercoating material is greater than the second intercoating material in an anti-sagging property so that the resultant coating has an improved smoothness and anti-chipping property.

Abstract: A coating method contains a coating step for spraying the surface of a coating substrate paint with a paint and a drying step for drying the paint coated thereon. The paint coated on the substate is then caused to flow or sag artificially within the coat in the drying step by application of an action from the outside at least in one of the coating and drying steps, namely, by heating or vibrating the paint coated thereon. During the flowing or sagging of the paint artificially, the substrate is rotated about its axis extending substantially horizontally in a longitudinal direction of the substrate at a speed which is high enough to rotate the substrate before the paint coated thereon substantially sag due to gravity yet which is low enough so as to cause no sagging as a result of centrifugal force.

Abstract: The coating method includes the intercoating step for spraying the intercoating paint over a substrate after undercoating, the intercoat drying step for drying the intercoat on the substrate, the overcoating step for spraying the overcoating paint over the dried intercoat on the substrate, and the overcoat drying step for drying the overcoat. In the intercoating step, the intercoating paint is sprayed in such an amount as causing sag, that is, in an amount beyond its sagging threshold value. In the intercoat drying step, the substrate is rotated about its horizontal and longitudinal axis to dry the intercoat.

Abstract: The coating method includes the intercoating step for spraying the intercoating paint over a substrate after undercoating, the intercoat drying step for drying the intercoat on the substrate, the overcoating step for spraying the overcoating paint over the dried intercoat on the substrate, and the overcoat drying step for drying the overcoat. In the intercoating step, the intercoating paint is sprayed in such an amount as causing sag, that is, in an amount beyond its sagging threshold value. In the intercoat drying step, the substrate is rotated about its horizontal and longitudinal axis to dry the intercoat.