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

Internal coating of metal packaging product and preparation method of internal coating

A metal packaging and inner coating technology, applied in coatings, polyester coatings, etc., can solve problems such as endangering human health and polluting the atmosphere, and achieve the effects of low cost, full coating film, and high solid content

Inactive Publication Date: 2019-01-18
SICHUAN GAOSHENG PACKAGING PROD
View PDF1 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inner coating of traditional metal packaging products mostly adopts amino baking varnish system. This kind of coating is composed of resin, filler, additives and solvents. During the baking process of the inner coating of metal packaging products, formaldehyde gas will be released, polluting the atmosphere, seriously endanger human health

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

Embodiment 1

[0032] 56 parts by weight of n-pentanol are added to the reactor and the temperature is raised to 116°C, and 50 parts by weight of crotonic acid containing 7wt%, ethyl crotonic acid of 7wt%, polyester resin of 5wt%, and butene of 42wt% are added dropwise. Butyl methacrylate, 16wt% butyl ethacrylate, 3wt% methyl ethacrylate, 7wt% ethyl crotonate, 2wt% hydroxypropyl crotonate, 3wt% ethyl crotonate Glycidyl crotonate, 7wt% n-octyl crotonate crotonic acid mixed monomer, 0.3wt% cumene peroxide and 0.1wt% n-butyl The mixed solution that mercaptan is formed, and control finishes dropping in 5 hours, keep warm for 2 hours, add 0.1 weight part of cumene peroxide again, vacuumize and remove n-amyl alcohol after continuing to keep warm for 5 hours, subsequently the temperature of reaction system When the temperature is below 60°C, neutralize the pH value to 6.5 with ammonia water or an organic amine neutralizer, and finally add an appropriate amount of water to adjust the solid content t...

Embodiment 2

[0034] 60 parts by weight of n-pentanol are added to the reactor and the temperature is raised to 120° C., and 41 parts by weight of crotonic acid containing 10 wt %, ethyl crotonic acid of 3 wt %, ethyl crotonic acid of 7 wt %, 37 wt % of crotonic acid are added dropwise. butylphenol crotonate, 2wt% butyl crotonate, 20wt% cresol crotonate, 10wt% ethyl crotonate, 2wt% propyl crotonate, 5wt % ethyl crotonate glycidyl ester, 3wt% n-octyl crotonate crotonic acid mixed monomer, 0.4wt% cumene peroxide and 0.3wt% crotonic acid mixed monomer The mixed solution that n-butyl mercaptan is formed, and control finishes dropwise in 6 hours, keep warm for 2 hours, add 0.1 weight part of cumene peroxide again, vacuumize and remove n-amyl alcohol after continuing to keep warm for 3 hours, then react When the temperature of the system is below 60°C, the pH value is neutralized to 6.5 with ammonia water or an organic amine neutralizer, and finally an appropriate amount of water is added to adju...

Embodiment 3

[0036] Take by weighing as follows: the water-soluble resin prepared in embodiment 1: 30%, the polyester resin of 10wt%, hexamethoxyethyl melamine resin: 4%, triethylamine: 0.1%, glycerol ether : 0.6%, water: 41%, polyacrylate block copolymer dispersion: 1.5%, non-organic silicon defoamer 0.6%, crotonate nano-silica 0.4%, pigment red: 1%, Chin White powder: 9.0%, barium sulfate: 3%. The self-made water-soluble resin, polyester resin, water, polyacrylate block copolymer dispersant and crotonate

[0037] Disperse and stir nano-silica evenly, add pigment red, chromium white powder and barium sulfate to disperse and stir for 20 minutes, grind 3 to 4 times with a sand mill until the fineness is below 10 μm, add hexamethoxyethylmelamine resin, triethylamine, The glycerol ether and the antifoaming agent are dispersed and stirred for 30 minutes, and the dispersed product is adjusted with water to obtain the inner coating of the metal packaging product of the present invention.

[00...

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
hardnessaaaaaaaaaa
glossaaaaaaaaaa
Login to View More

Abstract

The invention relates to an internal coating of a metal packaging product. The internal coating is prepared from components in percentage by mass as follows: 30wt%-60wt% of closed isocyanate, 5wt%-20wt% of polyester resin, 4wt%-16wt% of cyanate ester modified epoxy resin, 10wt%-41wt% of pigment, 3wt%-10wt% of filler, 0.6wt%-5wt% of a cosolvent, 0.6wt%-3wt% of an aid and 10wt%-40wt% of water. The internal coating of the metal packaging product is resistant to acid, base and corrosion, environmentally friendly and safe and applied to an inner layer of the metal packaging product, and the safetyand stability of the metal packaging product are improved.

Description

technical field [0001] The invention relates to the technical field of metal packaging products, in particular to an inner coating of metal packaging products and a preparation method thereof. Background technique [0002] Metal packaging products are opaque, have good airtightness, can be recycled and reused, meet international environmental protection requirements, and meet future product trends. They have been widely used in the field of food packaging. In order to prevent the inner layer of metal packaging products from corroding and rusting, a coating is usually used to coat the inner layer of metal packaging products for protection and aesthetics. The inner coating of traditional metal packaging products mostly adopts amino baking varnish system. This kind of coating is composed of resin, filler, additives and solvents. During the baking process of the inner coating of metal packaging products, formaldehyde gas will be released, polluting the atmosphere, Seriously end...

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): C09D133/06C09D167/00C09D161/32C09D153/00C09D7/61C09D7/63C09D7/62C08F220/10C08F220/04C08F220/28C08F220/32
CPCC08F220/10C08K2003/2241C08K2003/3045C08L2205/035C09D133/068C08L67/00C08L61/32C08L53/00C08K13/06C08K9/04C08K3/36C08K3/22C08K3/30C08K5/06C08L33/00C08K9/06C08K3/34C08K5/17C08K3/346C08K5/05C08L83/10C08F220/04C08F220/281C08F220/325
Inventor 刘俊成
Owner SICHUAN GAOSHENG PACKAGING PROD
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