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

Water-based anticorrosive coating composition and anticorrosive coating method

A technology of anti-corrosion paint and coating method, which is applied in the direction of anti-corrosion paint, epoxy resin paint, and devices for coating liquid on the surface, etc., can solve the problems of spot rust, inability to show anti-corrosion, etc., and achieve sufficient anti-corrosion stability, excellent storage stability, the effect of reducing the total labor force

Active Publication Date: 2019-04-26
KANSAI PAINT CO LTD
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when these paints are applied to rusty surfaces or exposed to severe environments such as seaside environments for a long period of time, sufficient corrosion resistance may not be exhibited, and spot rust (rust stains and rust spots) sometimes occurs on the painted surface

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
  • Water-based anticorrosive coating composition and anticorrosive coating method
  • Water-based anticorrosive coating composition and anticorrosive coating method
  • Water-based anticorrosive coating composition and anticorrosive coating method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0177] The present invention is further explained below with reference to Examples. Hereinafter, "parts" and "%" represent "parts by mass" and "% by mass", respectively.

[0178] Production of water-reducible polyamine resin (A)

manufacture example 1

[0180] 3200 parts of "jER828" (trade name, manufactured by Mitsubishi Chemical Corporation; bisphenol A resin with an epoxy equivalent of 190 and a number average molecular weight of 375), 1700 parts of bisphenol A (molecular weight of 228), 900 parts of methyliso Butyl ketone and 5.0 parts of benzyldimethylamine were placed in a flask equipped with a stirrer, a thermometer, a nitrogen gas introduction tube, and a reflux condenser, and reacted at 120 °C until the epoxy equivalent per unit of non-volatile content It is 2500g / equivalent.

[0181] Then, 590 parts of a ketimidation product of 3,3'-diaminodipropylamine and methyl isobutyl ketone were added, and reacted at 120°C for 1 hour.

[0182] Then, 54 parts of deionized water and 380 parts of glycidyl neodecanoate were put therein, and reacted at 100° C. for 2 hours.

[0183] Thereafter, 90 parts of acetic acid and 70 parts of deionized water were added, and the inner solution was stirred and mixed. After adding 6,500 parts...

manufacture example 2 to manufacture example 8

[0186] Water-dilutable polyamine resins (A-2) to (A8) were produced in the same manner as above except for using the formulation composition of Table 1 below.

[0187] Table 1

[0188]

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
amine valueaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a two-pack type water-based anticorrosive coating composition which comprises a first component (I), which comprises a water-thinnable polyamine resin (A) and a rust-preventivepigment ingredient (B), and a second component (II), which comprises a water-thinnable epoxidized resin (C), wherein the water-thinnable polyamine resin (A) is a resin produced from an epoxy resin (a1) and a polyamine compound (a2) as starting materials and having a total amine value in the range of 20-120 mg-KOH / g, the rust-preventive pigment ingredient (B) includes, as some of the ingredient, arust-preventing pigment (b) capable of releasing ions of at least one kind selected from among magnesium ions, aluminum ions, calcium ions, zinc ions, silicate ions, phosphate ions, vanadate ions, andmolybdate ions, the rust-preventive pigment ingredient (B) is contained in an amount of 1-100 parts by mass per 100 parts by mass of the water-thinnable polyamine resin (A), and the water-thinnable epoxidized resin (C) has a lower weight-average molecular weight than the water-thinnable polyamine resin (A).

Description

technical field [0001] The invention relates to a water-based anticorrosion coating composition and an anticorrosion coating method. Background technique [0002] Steel materials are widely used in many fields such as offshore engineering structures, harbor facilities, ships, buildings, civil engineering structures, automobiles; however, they have a problem of corrosion when exposed to the natural environment. As a method of preventing or suppressing corrosion, anti-corrosion coating is implemented. [0003] In recent years, steel structures such as iron bridges, factories, steel towers, and oil facilities have entered a period of aging and require repainting. [0004] In general, for repair coating of steel structures, ground treatment before coating is important. The life of the coating film depends on the precision of the substrate preparation. Specific examples of the base treatment include removal of rusted parts of rusted parts of steel structures, roughening of the...

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): C09D163/00B05D7/14B05D7/24C09D5/02C09D5/08C09D7/61C09D7/63C09D7/65
CPCB05D7/14B05D7/24C09D5/02C09D5/08C09D163/00
Inventor 太田伶美木村友哉松田英树堀常晃佐野真
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