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Modified hydrophilic acrylic resin film

An acrylic resin and modification technology are applied in the field of modified acrylic resin films and laminates formed by laminating the modified acrylic resin films, which can solve the problems of low durability and inability to withstand long-term use, and achieve hydrophilicity. Improved, high-performance anti-fog properties, improved durability

Inactive Publication Date: 2015-02-18
MITSUI CHEM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, as for the above-mentioned method of simply block-polymerizing or graft-polymerizing hydrophilic monomers on the surface of the substrate, since the hydrophilic groups exist only on the surface, there are low durability and cannot withstand long-term use. The problem

Method used

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  • Modified hydrophilic acrylic resin film
  • Modified hydrophilic acrylic resin film
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0168] Hereinafter, the present invention will be described in more detail using examples and the like, but the present invention is not limited to these examples.

[0169] In addition, in this invention, the physical property evaluation of a film was performed as follows.

[0170]

[0171] Apply an acrylic resin-based coating solution to a substrate and dry it with a solvent, and measure the 808 cm before and after UV irradiation. -1 of>C=CH 2 The peak intensity (baseline method) was used to calculate the degree of polymerization using the following formula.

[0172] Polymerization degree (mol%) = (peak intensity before UV irradiation - peak intensity after UV irradiation) / peak intensity before UV irradiation × 100

[0173]

[0174] Such as figure 1 As shown in the sample preparation, the sample was cut obliquely, and the anion concentration (Sa) at the above-mentioned outer surface and the anion concentration (Da) at the above-mentioned middle position were measured...

manufacture example 1

[0201] [Manufacture Example 1] Manufacture of a coated surface (hydrophilic membrane) having an anionic hydrophilic group

[0202] (Preparation of coating solution 1)

[0203] According to the compounding ratio in Table 1, a uniform coating solution 1 with a solid content of 65 wt% was prepared.

[0204] [Table 1]

[0205] Table 1 Coating solution 1

[0206]

[0207]

[0208]

[0209]

[0210] To 10.0 g of a mixed solution of 8.3 g of cyclohexane and 1.7 g of toluene, add 1.0 g of the hydrophilic compound SPA-K: 3-sulfopropyl acrylate potassium salt, which forms the inclined film of the present invention, and stir at 25°C After 1 hour, filtration was performed with a 0.45 μm membrane filter.

[0211] The obtained filtrate was placed in an evaporating dish, heated and dried at 150° C. for 2 hours, cooled to room temperature, and the weight of the residue was measured.

[0212] Finally, the solubility in cyclohexane:toluene=5:1 (weight ratio) was calculated|requir...

Embodiment 1

[0222] First, according to Table 3, a treatment solution for grafting the surface of the membrane obtained in Production Example 1 was prepared.

[0223] [table 3]

[0224] Table 3 grafting treatment solution

[0225]

[0226]

[0227] With bar coater #20, the graft treatment liquid that obtains is coated on the coating film surface of manufacture example 1, carries out 2~3 minutes drying with the warm air drier of 40~50 ℃, then makes it pass through UV conveyor ( Fusion UV Systems, Japan, electrodeless discharge lamp H bulb, output 100%, conveyor speed 6m / min) 1 time (cumulative light amount 900mJ / cm 2 ), while carrying out the grafting treatment on the surface of the coating film, the film is fully cured. Finally, the surface of the obtained coating film was washed with running water while lightly wiping it with a sponge made of polyurethane, dried with a warm air dryer, and then cooled to room temperature to complete the coating. The results are shown in Table 6. ...

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PUM

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Abstract

[Problem] To provide a modified hydrophilic acrylic resin film which has excellent antifogging properties and antifouling properties and also excellent transparency. [Solution] A modified acrylic resin film of the present invention is obtained from an acrylic resin-based film having an anionic hydrophilic group, the film being obtained by treating the surface of an acrylic resin-based film with a compound (A) having, per molecule, at least one anionic hydrophilic group and at least one group selected from the group consisting of a group having a polymerizable carbon-carbon double bond, an amino group, a mercapto group and a hydroxyl group, where the concentration of an anionic hydrophilic group on said surface is higher than the anionic hydrophilic group concentration of the half film-thickness depth from the surface of the acrylic resin-based film.

Description

technical field [0001] The present invention relates to a hydrophilic modified acrylic resin film excellent in antifogging properties, excellent antifouling properties, and excellent in transparency, and a laminate obtained by laminating the modified acrylic resin film. Background technique [0002] In recent years, there has been an increasing demand for improvement in fogging and fouling of substrates made of organic materials such as plastics and inorganic materials such as glass. [0003] As a method of solving the problem of fogging, a method of improving hydrophilicity and water absorption using an antifogging paint containing a reactive surfactant and an acrylic oligomer has been proposed (for example, see Non-Patent Document 1). In addition, as a method to solve the problem of dirt, it has been proposed to improve the hydrophilicity of the surface of the material, and use water or rain to float the dirt such as external air hydrophobic substances attached to the oute...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/12C08J7/16
CPCC08J7/12C08J7/16C08J5/18C08J7/18C08J2333/08C08F220/382C08F222/102C08F222/1065C08F222/1006C08J2335/02C08L33/14C08L2201/00
Inventor 冈崎光树
Owner MITSUI CHEM INC
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