Method for forming multilayered coating film

A multi-layer coating and coating technology, applied in chemical instruments and methods, devices for coating liquids on surfaces, coatings, etc., can solve problems such as no description, and achieve the effect of high saturation and brightness

Active Publication Date: 2018-04-27
นิปปอน เพนท์ ออโตโมทีฟ โคทติ้งส์ โค แอลทีดี
View PDF11 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, this Patent Document 4 also does not describe a candy-colored coating film in which the functions of the conventionally provided intermediate coating film are supplemented while maintaining its design.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for forming multilayered coating film
  • Method for forming multilayered coating film
  • Method for forming multilayered coating film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0075] In the preparation of the hydroxyl-containing polyester resins, in addition to the acid components and polyols mentioned above, further reactive components can also be used. Examples of additional reactive components include monocarboxylic acids, hydroxycarboxylic acids, certain lactones, drying oils, semi-drying oils, fatty acids thereof, and the like. More specifically, examples thereof include monoepoxide compounds such as Cardura E (available from Shell Chemicals Japan Ltd.) and certain lactones. A certain lactone mentioned above is a component that can undergo a ring-opening addition reaction with a certain polyester between a polycarboxylic acid and a polyhydric alcohol to form a grafted chain, examples of which include β-propiolactone (propiolacron ), dimethylpropiolactone, butyl lactone, γ-valerolactone, ε-caprolactone, γ-caprolactone, γ-octyl lactone, crotolactone, δ-valerolactone Esters, δ-caprolactone, etc., among which ε-caprolactone is most preferable.

...

Embodiment

[0189] The present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto. In the examples, "part" and "%" refer to those by mass unless otherwise specified.

[0190] Manufacture of Metal Substrate Coating Compositions

manufacture example 1

[0191] Production Example 1: Production of urethane-modified polyester resin

[0192] Into a 2 L reaction vessel equipped with nitrogen inlet tube, stirrer, temperature controller and condenser with dropping funnel and decanter, add 440 parts of isophthalic acid, 20 parts of hexahydrophthalic acid, 40 parts Azelaic acid, 300 parts trimethylolpropane and 200 parts neopentyl glycol. When the reaction vessel was heated and the dissolved raw materials became stirrable, 0.2 parts of dibutyltin oxide was added thereto, and the temperature of the reaction vessel was gradually raised from 180°C to 220°C over 3 hours with stirring. The resulting condensate is distilled outside the system. After the temperature reached 220° C., the temperature was maintained for 1 hour, and then 20 parts of xylene was gradually added to the contents of the reaction vessel to conduct a condensation reaction in the presence of a solvent. After the acid value of the resin reached 10 mgKOH / g, the reaction...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to view more

Abstract

The present invention addresses the problem of providing a method which, even when intermediate coating is omitted, can form a multilayered coating film (candy color coating film) that has an excellent coating film appearance and that is not inferior in coating film performance to multilayered coating films obtained by conventional coating methods. The present invention provides a method for forming a multilayered coating film which comprises a metallic base coating film formed from a metallic base coating composition containing a color pigment (i) and a glitter pigment (ii), a color base coating film formed from a color base coating composition, and a clear coating film, wherein the color base coating composition comprises an acrylic resin (a), a melamine resin (b), a blocked isocyanate compound (c), a phosphoric acid compound (d), and a color pigment (e), the metallic base coating film has a light transmission of 0.0001-0.1% in the wavelength range of 300-420 nm, the color base coating film has a light transmission of 20-70% in the wavelength range of 300-420 nm, and the color base coating film, after baking and curing, has a dry-state thickness of 21-40 [mu]m.

Description

technical field [0001] The present invention relates to a method of forming a multilayer coating film with high designability. Background technique [0002] In recent years, as a coating film for automobile bodies, a metal base coating film containing a glitter color material is laminated with a color clear coating film containing a coloring pigment, which has a high saturation, high brightness, and excellent depth of color with a high design. Permanent multilayer coatings are known and are known as so-called "candy-coloured" coatings. [0003] As a coating film for automobile bodies, candy-colored coating films have attracted attention due to their beautiful coating appearance. However, in order to have a uniform design of the entire automobile body having a complicated shape, strict management of coating conditions, such as conditions under which variation in film thickness is suppressed at the time of coating, is required. When the management of coating conditions is no...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B05D1/36B05D5/06B05D7/24B32B27/20C09D7/61C09D7/63C09D133/00C09D161/28C09D175/04
CPCB05D5/06B05D7/24B05D1/36B32B27/20C09D133/00C09D161/28C09D175/04C09D7/40
Inventor 稻积孝哲藤本宏美入江贵史
Owner นิปปอน เพนท์ ออโตโมทีฟ โคทติ้งส์ โค แอลทีดี
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap