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

Water paint composition and coated articles

A water-based paint and composition technology, applied in the direction of epoxy resin paint, coating, lining/interior coating, etc., can solve problems such as being unsuitable for covering use

Active Publication Date: 2005-07-13
TOYO INK SC HOLD CO LTD
View PDF8 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, the aroma components in alcoholic beverages are more easily absorbed by the coating film than the aroma components of non-alcoholic beverages, so the coatings disclosed in the known documents are not suitable for coating the inner surface of cans containing alcoholic beverages.

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

Examples

Experimental program
Comparison scheme
Effect test

manufacture example 1

[0089]

[0090] (1) Epico-to4250 (manufactured by Japan Epoxy Resin Co., Ltd.) 500 parts

[0091] (2) 500 parts of ethylene glycol monobutyl ether

[0092] (1) and (2) were added in a four-necked flask, and stirred at 110°C for 5 hours to obtain an epoxy resin (a1-1) with a solid content of 50%, an epoxy equivalent of 8,000, and a weight-average molecular weight of 60,000. solution.

manufacture example 2

[0093]

[0094] (1) Epico-to 1010 (manufactured by Japan Epoxy Resin Co., Ltd.) 500 parts

[0095] (2) 500 parts of ethylene glycol monobutyl ether

[0096] (1) and (2) were added in a four-necked flask, and stirred at 110°C for 3 hours to obtain an epoxy resin (a1-2) with a solid content of 50%, an epoxy equivalent of 4,000, and a weight-average molecular weight of 12,000 solution.

manufacture example 3

[0097]

[0098] (1) 150 parts of methacrylic acid

[0099] (2) 150 parts of styrene

[0100] (3) 700 parts of ethyl acrylate

[0101] (4) Benzoyl peroxide 10 parts

[0102] (5) 90 parts of ethylene glycol monobutyl ether

[0103] (6) 900 parts of ethylene glycol monobutyl ether

[0104]Put the above (6) into a four-necked flask, and add the mixed solution of (1) to (5) dropwise within 3 hours while stirring at 110° C. under nitrogen flow. After the dropwise addition, it was stirred at 110° C. for 3 hours to obtain a carboxyl group-containing acrylic resin (a2-1) solution having an acid value of 98 mgKOH / g, Tg: 8° C., and a weight average molecular weight of 74,000.

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
Acid valueaaaaaaaaaa
Login to View More

Abstract

PROBLEM TO BE SOLVED: To provide an aqueous coating composition which improves various defects possessed by a self-emulsifiable epoxy resin, excels in water resistance, has sufficient processability, corrosion resistance, and slip properties at the same time when used as a can coating, particularly a lid coating, and can form a coating film having both flavor properties and adhesion when used as an inner surface coating for a bottomed cylindrical member. SOLUTION: The aqueous coating composition comprises an acrylic-modified epoxy resin (1), a basic compound, and an aqueous medium. Here, the acrylic-modified epoxy resin (1) is obtained by reacting part of the epoxy groups of an epoxy resin (a1) with part of the carboxy groups of a carboxy group-containing acrylic resin (a2) having an acid value X<SB>a< / SB>(mgKOH / g) of 10≤X<SB>a< / SB>≤135, a glass transition temperature Tg (°C) of -20≤Tg≤20, and a weight average molecular weight Mw of 10,000≤Mw≤200,000 and a carboxy group-containing acrylic resin (a3) having an acid value X<SB>B< / SB>(mgKOH / g) of 180≤X<SB>B< / SB>≤450. COPYRIGHT: (C)2005,JPO&NCIPI

Description

technical field [0001] The present invention relates to a water-based coating composition and an object to be coated for coating a base material with the water-based coating composition. More specifically, the present invention relates to an aqueous coating composition suitable for coating substrates such as metals. Background technique [0002] A coating composition containing an aromatic epoxy resin as a main component has excellent processability, content resistance and coating film performance, and can be used as a coating for metals, especially for containers. These aromatic epoxy resins themselves do not dissolve or disperse in aqueous solvents. [0003] On the other hand, water-based primers and coatings for metals have been studied from the viewpoint of resource saving, energy saving, or environmental preservation, and proposals have been made for the water-based primers and coatings mainly composed of aromatic epoxy resins. various schemes. There is known, for ex...

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
IPC IPC(8): B65D25/14B05D7/14B32B15/08B32B15/092C08L63/00C09D5/00C09D5/02C09D133/02C09D133/08C09D163/00C09D163/10
CPCB32B27/38B65D25/14C09D5/00C09D133/062C09D163/00
Inventor 冈本淳二山口薰原口幸也
Owner TOYO INK SC HOLD 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