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Aqueous white electroconductive primer coating composition and method for forming multilayer coating film using same

A technology of conductivity and composition, applied in conductive paints, coatings, primers, etc., can solve the problems of difficulty and high resistance, and achieve the effect of reducing paint waste

Active Publication Date: 2022-04-26
KANSAI PAINT CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Plastic substrates generally have high resistance (generally speaking, the surface resistivity is 1×10 12 ~1×10 16 Ω / □), so it is very difficult to apply the paint directly on the surface of the plastic substrate by electrostatic coating

Method used

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  • Aqueous white electroconductive primer coating composition and method for forming multilayer coating film using same
  • Aqueous white electroconductive primer coating composition and method for forming multilayer coating film using same
  • Aqueous white electroconductive primer coating composition and method for forming multilayer coating film using same

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Experimental program
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Embodiment

[0211] Hereinafter, the present invention will be described more specifically with reference to production examples, examples, and comparative examples. However, the present invention is not limited by these. In each example, "parts" and "%" are based on mass unless otherwise specified. In addition, the film thickness of a coating film is based on a cured coating film.

[0212]

[0213]

[0214]

[0215] Add 40 parts of ethylene glycol monobutyl ether and 30 parts of isobutanol into a reaction tank equipped with a stirrer, thermometer, reflux cooler, etc., heat and stir, and after reaching 100°C, mix the following monomers for 3 hours Add dropwise.

[0216] Styrene 10 parts

[0217] Methyl methacrylate 18 parts

[0218] 35 parts of isobornyl acrylate

[0219] 10 parts n-butyl acrylate

[0220] 20 parts of 2-hydroxyethyl methacrylate

[0221] Acrylic 7 parts

[0222] 1 part of 2,2′-azobisisobutyronitrile

[0223] 5 parts isobutanol

[0224] After the dropwise ad...

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Abstract

The purpose of the present invention is to provide a white conductive primer coating composition capable of forming a coating film having high brightness and sufficient conductivity on a plastic substrate. The present invention relates to an aqueous white electroconductive primer coating composition comprising a binder component (A) and a carbon nanotube dispersion (B), the white degree L * value of a coating film formed by the aqueous white electroconductive primer coating composition according to a CIE color matching function being 80 or more, and the surface resistivity being 108 [Omega] / square or less.

Description

technical field [0001] The present invention relates to a water-based white conductive primer coating composition and a method for forming a multilayer coating film using the coating composition, which can form conductivity and lightness on plastic substrates such as automobile bumpers and the like Excellent multi-layer coating film,. Background technique [0002] In the past, the coating of plastic substrates was carried out by spraying methods such as air spraying and airless spraying. However, in order to save energy and reduce the discharge of harmful substances to the environment, electrostatic spraying with high coating efficiency has been continuously studied and adopted. painting. [0003] Plastic substrates generally have high resistance (generally speaking, the surface resistivity is 1×10 12 ~1×10 16 Ω / □), so it is very difficult to directly coat the paint on the surface of the plastic substrate by electrostatic coating. Therefore, it is usually necessary to co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D123/00C09D133/08C09D133/12C09D167/00B05D7/26B05D7/02B05D5/12
CPCC09D123/00C09D133/064C09D5/002C09D5/24B05D7/26B05D7/02B05D5/12C08L33/064C08L67/02C08K3/041C08L23/00C09D7/61C09D123/02C08L2312/00B05D2401/20B05D2601/20B05D2601/24B05D2502/00B05D2507/00B05D2507/01B05D2503/00B05D3/02B05D1/045B05D7/532C08K2003/2241C09D5/024C09D133/066C08K3/20C08L33/06C08L67/00C08L75/00C08K3/22C08K5/0025C08L23/02C08F220/1811C08F220/20C08F220/14C08F220/1804C08F212/08C08F220/06B05D1/007B05D7/572B82Y30/00B82Y40/00
Inventor 本田拓梦小野贵之殿村浩规名畑信之
Owner KANSAI PAINT CO LTD
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