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Coating composition, method for producing same, and laminate having hard coat layer

A technology of coating composition and manufacturing method, applied to the direction of coating, equipment and equipment for coating liquid on the surface, etc., to achieve the effect of increasing film thickness, excellent long-term storage stability, and easy formation

Inactive Publication Date: 2011-12-07
TOKUYAMA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As shown in the examples, the above-mentioned coating composition can only form a coating with a thickness of about 2 μm. This is considered to be caused by the large amount of water contained in it. In the case of forming a thick film that can maintain sufficient scratch resistance for a long time There is room for improvement in

Method used

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  • Coating composition, method for producing same, and laminate having hard coat layer
  • Coating composition, method for producing same, and laminate having hard coat layer
  • Coating composition, method for producing same, and laminate having hard coat layer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0293](Preparation of Coating Composition 1)

[0294] 44.6 parts by mass of γ-glycidoxypropyltrimethoxysilane, 13.5 parts by mass of tetraethoxysilane, and 0.14 parts by mass of a silicone-based surfactant (manufactured by Toray-Dow Coning Co., trade name "L- 7001": SiL1), 17.7 parts by mass of tert-butanol, 58.5 parts by mass of diacetone alcohol. While stirring this liquid sufficiently, 44.7 parts by mass of a 0.017N aqueous hydrochloric acid solution was added, and after the addition was completed, stirring was continued at 15 to 30° C. for 20 hours. Next, 2.8 parts by mass of tris(2,4-pentanedione)aluminum (III) was added, followed by stirring at 20 to 25° C. for 1 hour, and mixed with 104.7 parts by mass of methanol-dispersed composite metal oxide fine particles (SOL1) (41.9 parts by mass) parts of composite metal oxide fine particles, 62.8 parts by mass of methanol), and after stirring for 24 hours, the coating composition 1 of the present invention was obtained. The a...

Embodiment 2～4

[0300] Except having changed the resin base material (lens base material) using the said coating composition 1, the laminated body (hard-coat lens) was produced by the method similar to Example 1, and the evaluation was performed. The results are shown in Table 9.

Embodiment 5～33

[0302] (Preparation of Coating Compositions 2 to 30)

[0303] In addition to using the composite metal oxide fine particles, organosilicon compound, water-soluble organic solvent, curable catalyst, aqueous solution for hydrolysis of organosilicon compound, and surfactant shown in Tables 1 to 3, the coating composition 1 Prepare coating compositions 2-30 in the same way. The dosing mass ratio of the coating composition is shown in Table 5, and the content of each component is shown in Table 6.

[0304] (Preparation of laminated body, evaluation of laminated body)

[0305] Except using the above-mentioned coating compositions 2 to 30, coating was carried out in the same manner as in Example 1 to form a hard coat layer on the surface of the resin substrate (lens substrate), and various properties were evaluated. The results were the same as those of the hard coat. The thicknesses of the layers are shown in Table 9 and Table 10 together.

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Abstract

Provided is a coating composition which can form a hard coat layer with excellent transparency and excellent scratch resistance on the surface of an optical resin substrate such as a plastic lens, and which exhibits long-term storage stability. The coating composition comprises (A) composite metal oxide fine particles, (B') a hydrolyzate obtained by hydrolysis of (B) a hydrolyzable organosilicon component containing (B1) an epoxy-containing organosilicon compound such as gamma-glycidoxy-propyltrimethoxysilane, (C) water, (D1) a low-boiling and low-viscosity alcohol having three or fewer carbon atoms (such as methanol or ethanol), (D2) a low-boiling and high-viscosity alcohol (such as t-butanol), (D3) a high-boiling organic solvent having a boiling point of 150 DEG C or above and below 200 DEG C (such as diacetone alcohol), and (E) a curing catalyst such as tris(2, 4-pentanedionato)aluminum (III), wherein the (D1) / (C) mass ratio is 1.80 to 7.00; the (D2) / (C) mass ratio is 0.24 to 2.50; and the (D3) / (C) mass ratio is 1.10 to 4.40.

Description

technical field [0001] The present invention relates to a novel coating composition, a method for producing the same, and a novel laminate having a hard coat layer (cured material layer) formed from the coating composition. Specifically, the present invention relates to a coating layer capable of forming an optimal hard coat layer on the surface of a high-refractive-index resin substrate (lens) having a refractive index of more than 1.50 or on the surface of a photochromic optical substrate such as a photochromic plastic lens combination. Background technique [0002] Resin lenses (resin base materials) have features that glass lenses do not have, such as light weight, safety, ease of processing, and fashion, and have been rapidly popularized in recent years. However, for example, a generally used diethylene glycol bisallyl carbonate resin lens has a refractive index of 1.50, which is lower than that of glass, and therefore has a disadvantage that the outer periphery of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D183/06B05D5/00B05D7/24C09D5/00C09D7/12C09D7/61
CPCC09D183/06C09D183/14C09D183/04G02B1/105C08G77/14C09D7/1216C08K3/22C09D7/61Y10T428/31511G02B1/14B05D7/24
Inventor 中司俊一郎森力宏
Owner TOKUYAMA CORP
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