Multi-component ground coating, toning method, and coating repairing method

A coating and metal coating technology, applied in the field of repairing coatings, can solve the problems of reducing coating VOC, suppressing unevenness, and worsening work efficiency, achieving good coating workability and finishing, and reducing the number of effects.

Inactive Publication Date: 2013-03-06
KANSAI PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] However, the coating described in Patent Document 4 contains organic solvents such as xylene that are subject to regulation. In order to apply this coating agent to compositions that respond to the environment in recent years, the organic solvent that is subject to regulation is replaced with other organic solvents. When using solvents or reducing VOC during coating to achieve high solidification, problems such as the following also arise: it is extremely difficult to suppress unevenness by coating such as gun metal color (black iron color with gun-like luster), and In order to eliminate this unevenness, many overlapping coating times are required, and work efficiency deteriorates

Method used

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  • Multi-component ground coating, toning method, and coating repairing method
  • Multi-component ground coating, toning method, and coating repairing method
  • Multi-component ground coating, toning method, and coating repairing method

Examples

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Embodiment

[0128] Hereafter, although an Example demonstrates this invention more concretely, this invention is not limited to these Examples. In addition, "parts" and "%" in the following examples represent "parts by mass" and "% by mass", respectively.

[0129]

manufacture example 1

[0131] Add the following components to a reactor with a capacity of 4 liters equipped with a heating device, a thermometer, a stirrer, a rectification column, and a reflux condenser with a water separator, heat at 160°C, and spend 3 hours to raise the temperature from 160°C to 230°C ℃.

[0132]

[0133] This was maintained at 230° C. for 1 hour, and generated condensed water (7.4 parts) was distilled off using a rectification column. Next, 5 parts of xylene was added, xylene and condensation water were refluxed, and water was removed using a water separator. Two hours after the addition of xylene, the measurement of the acid value was started, and when the acid value became 2 mgKOH / g or less, the pressure was reduced, and xylene was almost completely distilled off. Thereafter, it was cooled to 120° C., diluted with butyl acetate so that the solid content was 70%, and a butyl acetate solution of a polyester resin having a weight average molecular weight of 20,000 and a resi...

manufacture example 2

[0136] Add 68 parts of butyl acetate to a reactor with a capacity of 4 liters equipped with a thermometer, a stirrer, a reflux condenser, and a dropping pump, raise the temperature to 110°C while stirring, and drop it at a constant rate for about 3 hours at 110°C. A mixed solution of the following monomer mixture and polymerization initiator was added.

[0137]

[0138] After the dropwise addition was completed, the temperature was kept at 110°C for 1 hour, and the stirring was continued. After that, 0.5 parts of azobisdimethylvaleronitrile dissolved in 14 parts of butyl acetate was added dropwise at a constant speed for 1 hour as an additional catalyst. Then, after the dropwise addition, it was kept at 110° C. for 1 hour, the reaction was terminated, and diluted with butyl acetate to obtain an acrylic resin solution (A -1).

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Abstract

The invention provides a multi-component ground coating, the toning method of using the coating, and the coating repairing method as well. The multi-component ground coating features excellent coating performance and is capable of forming a repairing coating film which does not generate unevenness and is consistent with the known coating film in color. The multi-component ground coating is formed by combining the metal coating composition (I) and the thickening agent composition (II) together, wherein the metal coating composition (I) comprises cellulose derivative (A1), crylic acid resinoid (B1), polyester resin (C1), and bright pigment (D1); the thickening agent composition (II) comprises cellulose derivative (A2), crylic acid resinoid (B2), polyester resin (C2), and thickening agent (E); and the thickening agent (E) in the thickening agent composition (II) comprises an amides thickening agent (E1) as part of its components.

Description

technical field [0001] The present invention relates to a multi-component primer which has good coating workability and can be formed without unevenness, a method of toning using the base paint, and a repair coating method. And repair paint film with color consistency with known paint film. Background technique [0002] In recent years, in the refinishing of automobiles and other vehicles, the metal finishing of metallic base paints containing bright pigments and clear paints (clear paints) has become mainstream, and lacquer type paints are used as paints. In the case of this primer, from the viewpoint of the dryness of the primer, a polyester resin and cellulose acetate butyrate (sometimes abbreviated as CAB) are used. A component in which an ester resin and a CAB are blended in an acrylic resin, etc. are used as a paint for film-forming components. [0003] For example, Patent Documents 1 and 2 describe coating compositions using a graft copolymer of CAB, a polyester res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/10C09D167/02C09D151/02C09D101/14C09D7/14C09D7/80
Inventor 东谷智章篠田直树境博之
Owner KANSAI PAINT CO LTD
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