Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Multilayer coating film-forming method

A multi-layer coating and coating technology, which can be applied to devices and coatings for coating liquid on the surface, which can solve problems such as deficiencies and achieve the effect of excellent coating processability.

Inactive Publication Date: 2010-03-31
KANSAI PAINT CO LTD
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The effect of this method to prevent the aforementioned defects is still insufficient, and in particular, the problem that cracks will occur under high humidity conditions still exists

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
  • Multilayer coating film-forming method
  • Multilayer coating film-forming method
  • Multilayer coating film-forming method

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1-4

[0166] Into a four-necked flask equipped with a stirrer, a thermometer, a cooling tube, and a nitrogen inlet, 37.5 parts of isopropanol was charged, and then its temperature was raised to 85° C. under passage of nitrogen. After it reached 85° C., nitrogen supply was stopped, and each monomer mixture having the mixed composition of monomers and polymerization initiators shown in Table 1 below was added dropwise to the flask within 3 hours. (The system employed weak reflux conditions during the initial stages of the dropwise addition, but this was discontinued as the dropwise addition continued.) The reaction system was aged for an additional 2 hours at 85°C while passing nitrogen. , and cooled to 60°C. The product was diluted with 29 parts of methoxypropanol to obtain solutions of acrylic resins (a-1)-(a-4) having a solid content of 60% by mass of carboxyl groups and hydroxyl groups, respectively. The solid mass concentration (%) and resin parameters of the formed resin (a-1)-...

manufacture Embodiment 5-7

[0173] Into a four-necked flask equipped with a stirrer, a thermometer, a cooling tube and a nitrogen inlet, 20 parts of ethylene glycol monobutyl ether was charged, and its temperature was raised to 95° C. under nitrogen passage. After it reached 95° C., nitrogen supply was stopped, and each monomer mixture having the mixed composition of monomers and polymerization initiators shown in Table 2 below was added dropwise to the flask within 3 hours. Each product was then aged at 95°C for 2 hours under nitrogen passage, cooled to 60°C, and diluted with 15 parts of ethylene glycol monobutyl ether to provide tertiary amino groups with a solid content of 50% by mass. Solutions of resins (b-1)-(b-3). The solid mass concentration (%) and resin parameters of the formed resin (b-1)-(b-3) solutions are shown in Table 2 below.

[0174] In Table 2, MPEG2000MA (trade name) is a methoxypolyethylene glycol 2000 methacrylate, and MPEG 1000MA (trade name) is a methoxypolyethylene glycol 1000 m...

manufacture Embodiment 9

[0183] An aqueous dispersion of the acrylic resin (i) is produced as follows, and is used as a resin dispersion for the water-based base paint (B).

[0184] Charge 145 parts of deionized water and 1.2 parts of Newcol 562SF (Note 3) into a reactor equipped with a thermometer, automatic thermostat, stirrer, reflux condenser and dropping device, and put them in a nitrogen stream. Stir and mix. The temperature was raised to 80°C, 5% of the following total amount of monomer emulsion (1) and 5.2 parts of 3% ammonium persulfate aqueous solution were added to the reactor, and kept at 80°C for 20 minutes.

[0185] The remaining monomer emulsion (1) was then added dropwise to the reactor over 3 hours, followed by aging for 30 minutes. Then the following monomer emulsion (2) was added dropwise over 1.5 hours. The reaction mixture was aged for 2 hours and cooled to 30° C. during the gradual addition of 89 parts of a 1.5% aqueous solution of N,N-dimethylethanolamine to the reactor. The ...

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

No PUM Login to View More

Abstract

This invention provides a multilayer coating film-forming method comprising applying base coating paint (A) onto a coating object, successively applying onto the so formed uncured coated surface water-based coloring paint (B) and clear paint (C), and then heating to simultaneously cure the three-layered coating film composed of the paints (A), (B) and (C), in which the base coating paint (A) contains carboxyl group- and hydroxyl group-containing resin; tertiary amino group -containing resin which is obtained by copolymerizing tertiary amino group -containing unsaturated monomer, polyoxyalkylene group -containing nonionic unsaturated monomer and other unsaturated monomer (b-3); and crosslinking agent reactable with hydroxyl group.

Description

technical field [0001] The present invention relates to a method of forming a multilayer coating film capable of reducing the amount of solvent used and shortening the processing steps, and still having excellent coating workability and final appearance. Background technique [0002] In these years, environmental problems have attracted widespread attention on a global scale, and also in the automobile industry, efforts to improve the environment in manufacturing steps are bound to be advanced. Such problems as global warming, generation of industrial waste, and emission of volatile organic solvents (VOC) arise in the automobile manufacturing process. Particularly speaking of VOCs, the vast majority of which are generated in the coating step, and effective countermeasures are urgently required. [0003] Also from the standpoint of increasing productivity and reducing energy consumption, a coating method is required and proposed for this purpose, which dispenses with thermal...

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): B05D7/00
CPCB05D7/577B05D2202/10B05D7/572
Inventor 汤川嘉之
Owner KANSAI PAINT CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com