Pigment disperse sizing agent and electrophoretic paint

A technology of pigment dispersion and electrophoretic coating, applied in the direction of pigment slurry, electrophoretic coating, epoxy resin coating, etc., can solve the problem of insufficient redispersibility of coating, achieve excellent storage stability, temporarily stop reduction, save trouble and cost effects

Active Publication Date: 2009-01-28
KANSAI PAINT CO LTD
View PDF3 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when Patent Document 3 is applied to an electrophoretic paint for obtaining a white coating film containing titanium dioxide with a large specific gravity or an electrophoretic coating for obtaining a brown coating film using iron oxide, it is difficult to obtain a long time in the coating production line, especially during continuous breaks, etc. If the stirring and circulation of the electrophoretic coating are stopped for a long time, the redispersibility of the coating is insufficient during re-operation. Therefore, pitting and depressions occur on the electrophoretic coating surface of the coated article, especially on the horizontal surface, and need to be improved.

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
  • Pigment disperse sizing agent and electrophoretic paint
  • Pigment disperse sizing agent and electrophoretic paint
  • Pigment disperse sizing agent and electrophoretic paint

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0149] Production Example 1 Production Example of Pigment Dispersion Resin No.1 Solution

[0150] Add 390 parts of bisphenol A, 240 parts of polycaprolactone diol (number average molecular weight about 1200) and 0.2 part of dimethylbenzyl to 1010 parts of jER828EL (manufactured by Japan Electronics Co., Ltd., trade name: epoxy resin) Amines were reacted at 130°C until the epoxy equivalent weight became about 1090.

[0151] Next, add 134 parts of dimethylethanolamine and 90 parts of acetic acid, react at 120°C for 4 hours, add ethylene glycol monobutyl ether to adjust the solid content, and obtain a pigment dispersion of ammonium salt type resin with a solid content of 60%. Use resin No.1 solution. Pigment dispersion resin No. 1 had an ammonium salt value of 44 mgKOH / g and a number average molecular weight of 3,000.

manufacture example 2

[0152] Production Example 2 Production Example of Pigment Dispersion Resin No. 2 Solution

[0153] 450 parts of nonylphenol and 960 parts of CNE195LB (Note 1) were placed in a flask equipped with a stirrer, a thermometer, a separatory funnel, and a reflux cooler, and they were heated slowly while mixing and stirring, and allowed to react at 160°C. Then, 430 parts of ε-caprolactone was charged, and it heated up to 170 degreeC, and it was made to react. Further, 105 parts of diethanolamine and 124 parts of N-methylethanolamine were reacted to confirm that the epoxy value was 0, and ethylene glycol monobutyl ether was added to adjust the solid content to obtain a pigment dispersion resin No. 2 solution with a solid content of 60%.

[0154] The hydroxyl value of this pigment dispersion resin No. 2 was 150 mgKOH / g, the amine value was 70 mgKOH / g, and the number average molecular weight was 2200.

[0155] (Note 1) CNE195LB: Manufactured by Changchun Japan Co., Ltd., trade name: cre...

manufacture example 3

[0156] Production Example 3 Production of Pigment Dispersion Slurry No.1

[0157] Add 10.0 parts of pigment dispersion resin No.1 (6.0 parts of solid content) with a solid content of 60%, 20 parts of JR-600E (Note 2), 3.0 parts of Bariferain BF-20 (Note 10), and Abicel RC-N81 (Note 10). 12) 3.0 parts, 1.0 parts of KW-140E (Note 14), 2.0 parts of bismuth hydroxide, 1 part of dioctyltin oxide, 23.4 parts of deionized water, dispersed in a ball mill for 20 hours and then taken out to obtain a pigment dispersion with a solid content of 55%. Slurry No.1.

[0158] Production Examples 4-14 Production of Pigment Dispersion Slurries No.2-No.12

[0159] Except that the mixing content is shown in Table 1, it carried out similarly to the pigment dispersion slurry No. 1, and obtained the pigment dispersion slurry No. 2 - No. 12.

[0160]

[0161] (Note 2) JR-600E: Made by Teika Co., Ltd., for TiO 2 Coated with 3.8% Al 2 o 3 titanium dioxide

[0162] (Note 3) JR-603: Made by Teika ...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
hydroxyl valueaaaaaaaaaa
Login to view more

Abstract

The purpose of the invention is to provide a pigment dispersing paste capable of saving energy of coating apparatus and saving redispersibility of dye of the apparatus and electrophoretic paint. Specifically, the invention relates to a pigment dispersing paste for electrophoretic paint, containing pigment dispersing resin (A), tinting color (B), color filler (C) and cellulose composition (D); responding to the solid component 100 weight parts of the resin (A), the paste is characterized by containing: (1) 60 to 800 weight parts of (b1) titanium dioxide coated by 0.1 to 10.0 weight parts of Al2O3 without SiO2 on 100 weight parts of titanium dioxide as matrix; and/or (b2) ferric oxide as the of tinting color (B); (2) 2 to 200 weight parts of micro barium sulfate with the mean grain size of linear particle being 0.01 to 0.1 micron as the color filler (C); and (3) 1 to 50 weight parts of cellulose composition (D).

Description

technical field [0001] The present invention relates to a pigment dispersion slurry excellent in redispersibility of pigments capable of saving energy and equipment for coating equipment, and an electrophoretic paint using the pigment dispersion slurry. Background technique [0002] Electrophoretic paint is widely used as a primer for metal products such as automobile bodies because of its excellent painting workability and good rust resistance. Pigment dispersion slurries used in such electrophoretic coatings are usually stored in containers or cylindrical tanks and kept in warehouses after production. However, if they are not stirred regularly, the pigments may settle and use may be hindered. Especially when transporting foreign coating equipment, since the pigment dispersion slurry put into the cylindrical tank is in a state of non-stirring for a long time, it is urgent to improve the storage stability of the pigment dispersion slurry. [0003] On the other hand, in orde...

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): C09D17/00C09D5/44C09D163/00
Inventor 粕川高久片冈晴彦大家正裕
Owner KANSAI PAINT CO LTD
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