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

Anti-fog coating composition

A technology of anti-fog coating and composition, which is applied in coating, lighting and heating equipment, transportation and packaging, etc. It can solve the problems of reducing the brightness of car lights, affecting the appearance of lenses, and making users unhappy, so as to improve the suppression effect and improve The effect of hydrophilicity and excellent adhesion

Active Publication Date: 2012-09-12
NOF CORP
View PDF4 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As a result, the brightness of the car lamp is reduced, and the appearance of the lens is affected, which may cause discomfort to the user.

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
  • Anti-fog coating composition
  • Anti-fog coating composition
  • Anti-fog coating composition

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0055] [Manufacturing method of copolymer (A)]

[0056] The copolymer (A) is produced by copolymerizing a monomer mixture containing the above-mentioned monomers (A1), (A2), (A3) and optionally (A4). The structure of the copolymer can be any structure of random copolymer, alternating copolymer, block copolymer and graft copolymer, but it can improve the anti-fog performance of the anti-fog coating composition, and at the same time From the viewpoint of being able to easily prepare an anti-fog coating composition, a random copolymer is preferable. As a polymerization method for obtaining a copolymer, various well-known polymerization methods such as radical polymerization, cationic polymerization, anionic living polymerization, and cationic living polymerization can be used, but the ease of industrial productivity and product performance vary. From the viewpoint of chemicalization, radical polymerization is particularly preferred. As the radical polymerization method, block p...

Embodiment 1

[0100] The following compounds were placed in a reaction vessel equipped with a stirring device, a nitrogen gas introduction pipe, and a condenser, and heated to 65° C. while blowing nitrogen gas.

[0101] 240g n-propanol (hereinafter referred to as NPA) as polymerization solvent;

[0102] 10g of N-methylolacrylamide (hereinafter referred to as N-MAA) as monomer (A1);

[0103] 10g of 2-acrylamide-2-methylpropanesulfonic acid (hereinafter referred to as AMPS) as monomer (A2);

[0104] 60g methyl methacrylate (hereinafter referred to as MMA), 20g n-butyl acrylate (hereinafter referred to as BA) as monomer (A3);

[0105] 20g N,N-dimethylacrylamide (hereinafter referred to as DMAA) as monomer (A4);

[0106] 5.04 g of triethanolamine (see Table 1, base dissociation constant pKb in aqueous solution at 25°C = 6.2, boiling point 335°C) as basic compound (B).

[0107] In addition, the amount of the basic compound (B) corresponds to 70 mol% of the sulfonic acid groups of AMPS as the ...

Embodiment 2～8

[0142]Except that the kind of the basic compound (B) and the addition amount of the sulfonic acid group relative to the monomer (A2) are changed as shown in Table 2, all the other prepare the copolymer solution according to the same method as in Example 1, and then The anti-fog coating compositions were prepared and evaluated respectively, and the results are shown in Table 2. In addition, the physical properties of the basic compound (B) used in each example are shown in Table 1.

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
boiling pointaaaaaaaaaa
humidityaaaaaaaaaa
humidityaaaaaaaaaa
Login to View More

Abstract

Provided is an anti-fog coating composition. When applied and dried even under high-humidity conditions, the anti-fog coating composition rarely suffers from blushing. Further, the anti-fog coating composition can be heat-cured even at low temperature in a short time and can form a coating film that exhibits excellent tight adhesion to a substrate and excellent heat resistance and anti-fog properties. The anti-fog coating composition comprises (A) a copolymer, (B) a basic compound such as amine, and (C) a surfactant such as anionic surfactant, said copolymer (A) being a copolymer prepared from a monomer mixture that comprises (A1) a vinyl monomer that has an N-methylol group or an N-alkoxymethylol group, (A2) a vinyl monomer that has a sulfonic acid group, and (A3) an alkyl (meth) acrylate monomer.

Description

technical field [0001] The present invention relates to an anti-fog paint composition which is formed on a substrate such as an automobile headlight and the like, and which does not cause fogging even when the humidity is high during paint application and drying ( Blushing) and other problems can be cured under low temperature and short time conditions to provide a coating film with excellent adhesion to the substrate, heat resistance and anti-fogging properties. Background technique [0002] For vehicle lamps such as headlights of automobiles, due to the high-humidity air entering the lamp chamber, the lens becomes cold due to external air or rainfall, and moisture condenses on the inner surface, which often causes fogging. As a result, the luminance of the vehicle lamp is lowered, and the appearance of the lens is affected, which may cause discomfort to the user. In order to prevent such lens fogging, it is known to apply an anti-fog paint to the fogged parts. [0003] T...

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): C09D133/24C09D7/12C09D133/06C09D139/00C09D141/00C09K3/18
CPCC08F220/14C09D133/06C09D133/14F21S41/28F21S45/00C09D133/24C08F220/585C08K5/17C08F220/1804C08F220/56C08F220/58C09K3/18C08F220/382C08F220/18C08F220/54
Inventor 加纳崇光益子真司卷口琢郎山田伦久
Owner NOF CORP
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