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Hydrophilic coating agent, hydrophilic coating film and hydrophilic base

A hydrophilic, coating agent technology, applied in the fields of hydrophilic coating agent, hydrophilic film, and hydrophilic substrate, can solve the problem that can not all meet the requirements of hydrophilicity, high hardness and scratch resistance. Solvent resistance, alkali resistance and other issues

Active Publication Date: 2010-12-08
HARIMA CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The hydrophilic coating formed by the coating agent disclosed in any of the above-mentioned documents cannot fully satisfy the requirements of hydrophilicity, high hardness, scratch resistance, solvent resistance, and alkali resistance.

Method used

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  • Hydrophilic coating agent, hydrophilic coating film and hydrophilic base
  • Hydrophilic coating agent, hydrophilic coating film and hydrophilic base
  • Hydrophilic coating agent, hydrophilic coating film and hydrophilic base

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0100] Hereinafter, the present invention will be described more specifically by way of examples. In addition, the following "%" and "part" represent a mass basis.

[0101] It should be noted that the present invention is not limited by the following embodiments, and any modification can be made within the scope of the technical idea of ​​the present invention.

[0102] "Synthesis example of acrylic acid polymer having a hydroxyl group"

Synthetic example 1

[0104] 233 parts of methyl ethyl ketone (MEK) was added as a solvent in the reaction container, and it heated up to 60 degreeC.

[0105] On the other hand, in a monomer component composed of 50 parts of methyl methacrylate (MMA) and 50 parts of monomethacrylate of polyethylene glycol (MA-50A, manufactured by Nippon Emulsifier Co., Ltd.), stirring and mixing As a polymerization catalyst, 4.0 parts of azobis-2-methylbromonitrile (ABN-E, manufactured by Nippon Hydrazine Industry Co., Ltd.) was used to prepare a monomer mixed liquid.

[0106] The monomer mixed solution was added dropwise to the above mixed solvent at 60° C. over 3 hours, and the reaction was terminated after 3 hours. Thus, the product containing hydroxyl value 25, weight average molecular weight (M w ) 28000 acrylic polymer resin solution.

Synthetic example 2

[0108] 100 parts of monomers made of MA-50A are used as monomer components, and 1 part of 2-mercaptomethanol is used as a chain transfer agent. In addition, the same operation as in Synthesis Example 1 is used to produce a compound containing 55 hydroxyl values ​​and a weight-average molecular weight ( m w ) 8000 resin solution of acrylic polymer.

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PUM

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Abstract

Disclosed is a hydrophilic coating film having high hardness and excellent abrasion resistance. The hydrophilic coating film also has excellent solvent resistance and alkali resistance. Also disclosed is a hydrophilic coating agent containing (A) a colloidal silica sol, (B) an acrylic polymer containing an active hydrogen and having a weight average molecular weight (Mw) of 5,000-200,000, (C) a silane coupling agent, (D) a polylactone polyol and (E) a curing agent. The hydrophilic coating agent contains less than 30% by mass of (F) a surfactant containing an active hydrogen relative to the total mass of the component (E) and the component (F). The mass ratio between the component (A) and the component (B), namely (A) / (B) is from 5 / 95 to 95 / 5; the mass ratio between the total of the component (A) and the component (B) and the component (C), namely (A + B) / (C) is from 30 / 70 to 95 / 5; and the mass ratio between the component (B) and the component (D), namely (C) / (D) is from 90 / 10 to 10 / 90.

Description

technical field [0001] The present invention relates to a hydrophilic coating agent for imparting anti-fogging properties to spectacle lenses, window materials, etc., a hydrophilic coating obtained from the hydrophilic coating agent, and a product formed with the hydrophilic coating Hydrophilic substrate. Background technique [0002] Conventionally, hydrophilic coating agents for imparting anti-fogging properties to spectacle lenses, window materials, and the like based on glass, plastic materials, and the like are known. [0003] For example, Patent Document 1 below discloses a composition for a hydrophilic hard coat layer for forming a hydrophilic film having both scratch resistance and anti-fogging properties. Specifically, it discloses a monomer having at least 3 or more (meth)acryloyl groups in one molecule, a hydrophilic monomer having a functional group selected from carboxyl, sulfonic acid, and phosphoric acid, and an inorganic sol. Composition for water-based har...

Claims

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Application Information

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IPC IPC(8): C09D133/00C09D5/00C09D7/12C09D161/28C09D167/04C09D175/06
CPCC08G18/6229C08G18/4277C09D175/04C09D133/02C08G18/6254C08K5/0025C08K3/36C08L33/02C08G18/73C09D167/04C08G18/4063C09D5/1662C08L67/04C08G18/718
Inventor 中井亮一木口雅雄
Owner HARIMA CHEM INC