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Photochromic adhesive composition, photochromic layered body, and optical article using said photochromic layered body

A photochromic and adhesive technology, applied in the direction of cellulose plastic layered products, color-changing fluorescent materials, synthetic resin layered products, etc., can solve the problem of insufficient adhesion and heat resistance of polycarbonate sheets , Optical article peeling, optical deformation and other problems, to achieve the effect of excellent photochromic properties

Active Publication Date: 2021-01-08
TOKUYAMA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in these methods, since the resin composition (specifically, the polyurethane resin composition) used to form the above-mentioned resin layer having photochromic properties contains solvents such as tetrahydrofuran and toluene, when the resin composition is coated on When using polycarbonate sheet, etc., the transparent sheet may dissolve
As a result, there are problems in that poor appearance occurs, and the photochromic properties are lowered due to the synthetic resin eluted in the urethane resin.
However, in this method, the adhesiveness and heat resistance of the polycarbonate sheet in the above-mentioned laminated sheet are insufficient.
Therefore, when an optical article is produced by mounting the above-mentioned laminated body in a mold and then injecting a polycarbonate resin into the mold, there is a problem that peeling occurs in the obtained optical article and optical deformation occurs.

Method used

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  • Photochromic adhesive composition, photochromic layered body, and optical article using said photochromic layered body
  • Photochromic adhesive composition, photochromic layered body, and optical article using said photochromic layered body
  • Photochromic adhesive composition, photochromic layered body, and optical article using said photochromic layered body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0323] Preparation of Photochromic Adhesive Composition

[0324] Add 10 g of THF solution of urethane resin (U1), 75 mg of photochromic compound (PC1), 30 mg of trimethylolpropane ((B3) component: H4) as a crosslinking agent, and ethylene oxide as an antioxidant. Bis(oxyethylene)bis[3-(5-tert-butyl-4-hydroxy-m-tolyl)propionate] 25 mg, DOW CORNING TORAY L-700 13 mg as surfactant, at room temperature Stirring and mixing were performed to obtain a mixture for constituting the photochromic adhesive composition. Table 3 shows the compounding ratio of each component.

[0325] The above-mentioned mixture containing the organic solvent was coated on a PET (polyethylene terephthalate) film (Purelex film manufactured by Teijin DuPont Membrane Co., Ltd., with a silicon coating film), and dried at 80° C. for 5 Minutes later, the PET film was peeled off to obtain a photochromic adhesive sheet with a thickness of about 40 μm. Next, the obtained photochromic adhesive sheet was sandwiched ...

Embodiment 2

[0352] Preparation of Photochromic Adhesive Composition

[0353] A mixture constituting the photochromic adhesive composition was obtained in the same manner as the preparation of the photochromic adhesive composition (adhesive layer) in Example 1. The fits are shown in Table 3.

[0354] Preparation of adhesive for the second adhesive layer

[0355] 2.5 mg of DOW CORNING TORAY L-7001 was added as a surfactant to 25 g of a propylene glycol monomethyl ether solution of the urethane urea resin (W1) for the second adhesive layer, and stirred and mixed at room temperature to obtain An adhesive for the second adhesive layer.

[0356] Fabrication of Photochromic Laminates

[0357] Polycarbonate having a second adhesive layer with a film thickness of 10 μm was obtained by applying an adhesive for the second adhesive layer on a polycarbonate sheet with a thickness of 300 μm and drying it at 110° C. for 10 minutes. Sheet.

[0358] The above-mentioned mixture constituting the photoc...

Embodiment 3～14

[0362] The same method as in Example 2 was used except that (A) photochromic compound, (B) adhesive urethane (urea) resin, and (B3) active hydrogen-containing compound shown in Table 3 were used A photochromic adhesive composition was prepared. Table 3 shows the softening point of the obtained photochromic adhesive composition measured by the same method as in Examples 1 and 2.

[0363] Moreover, using each photochromic adhesive composition, the photochromic laminated body was produced by the method similar to Example 1 (without the 2nd adhesive layer) or Example 2 (with the 2nd adhesive layer). Table 3 shows the film thickness of the adhesive layer made of the photochromic adhesive composition, the presence or absence of use of the second adhesive layer, and the film thickness. In addition, the obtained photochromic laminate was evaluated in the same manner as in Example 1, and the photochromic properties and peel strength are shown in Table 5, and the bending process and in...

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Abstract

The present invention is a photochromic adhesive composition including (A) a photochromic compound having as a substituent a molecular chain having a molecular weight of 300 or greater, and (B) an adhesive urethane (urea) resin, the softening point of the photochromic adhesive composition being 140-220 DEG C, and a photochromic layered body in which the adhesive composition is used. Through the present invention, there is provided a photochromic adhesive composition for functioning as an adhesive layer for bonding an optical sheet, wherein a photochromic layered body in which the composition is used exhibits excellent photochromic characteristics, adhesion, and workability.

Description

technical field [0001] The present invention relates to a novel photochromic adhesive composition having adhesive properties. It relates to a novel photochromic adhesive composition capable of firmly bonding optical sheets, especially optical sheets containing organic resins, even at high temperatures and exhibiting excellent photochromic properties. Furthermore, it is related with the novel photochromic laminated body obtained using this photochromic adhesive composition, and a novel optical article. It should be noted that in the present invention, the urethane (urea) resin includes a urethane resin having only a urethane bond and a urethane urea resin containing both a urethane bond and a urea bond. both. Background technique [0002] In recent years, mainly in the United States, the demand for plastic substrates using polycarbonate, which is transparent and has excellent impact resistance, has rapidly increased for anti-glare sunglasses and the like. And among such pl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/23C08G18/42C08G18/44C09J11/06C09J175/04C09K9/02G02C7/10
CPCC08G18/44C09J11/06C09J175/04C09K9/02G02B5/23C09J175/02C08L75/04C08L75/02C08G18/755C08G18/10C09D175/04C09D175/02C09J2301/408C08K5/0041C09J2475/00C08J5/12C09J5/00C09J2400/228C09J2469/008G02C7/102C09K2211/1007C09K2211/1088B32B2255/10B32B27/281B32B2307/748B32B7/12B32B2551/00B32B27/16B32B27/40B32B27/306B32B2250/02B32B27/34B32B27/365B32B2255/26B32B2307/732B32B27/28B32B27/36B32B27/42B32B2307/712B32B23/08B32B23/04B32B2250/24B32B27/38B32B2307/306B32B27/08B32B27/32C08G18/758C08G18/4277C08G18/3206C08G18/3234C08G18/2865C08G18/42B32B27/00G02C7/10B32B2307/40C08G18/757C08G2170/00C08L83/04C09J9/00C09J175/12
Inventor 平连利光森力宏百田润二
Owner TOKUYAMA CORP
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