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Photochromic composition and optical article using same

A photochromic and composition technology, used in optical elements, optical components, color-changing fluorescent materials, etc., can solve the problems of photochromic urethane polymer peeling, poor adhesion, etc., to avoid adverse effects, light The effect that the discoloration is not reduced

Inactive Publication Date: 2014-02-26
TOKUYAMA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reason is considered to be as follows: The adhesion between the photochromic urethane polymer coated on the surface of the substrate and the substrate is poor, so there may be problems such as peeling off of the photochromic urethane polymer.

Method used

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  • Photochromic composition and optical article using same
  • Photochromic composition and optical article using same
  • Photochromic composition and optical article using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0413] (Preparation of Photochromic Composition)

[0414] 20 g of THF was added as an organic solvent to 5 g of urethane polymer (U1) having a polymerizable group, and it was dissolved by ultrasonic waves while stirring at 60°C. After confirming that the urethane polymer (U1) having a polymerizable group is dissolved, cool to room temperature, add 0.25 g of a photochromic compound (PC1) and 0.05 g of a 0.001N hydrochloric acid aqueous solution as a polymerization initiator, and stir Mix to obtain a photochromic composition.

[0415] (Production of photochromic laminates (optical components))

[0416] The obtained photochromic composition was coated on a PET film (Purex film manufactured by Teijin DuPont Film Co., Ltd., with a silicon coating film), and placed in a laboratory in the presence of moisture (23°C, humidity 50%), at 50 ℃ for 30 minutes to obtain a photochromic adhesive sheet with a thickness of about 40 μm. Next, sandwich the obtained photochromic adhesive sheet ...

Embodiment 2～40

[0453] Urethane polymers (component A), isocyanate compounds (component C), organic solvents (component D), polymerization initiators, and polymerizable groups shown in Table 3 and Table 5 are used. The monomer of the group, except that the photochromic composition was prepared in the same way as in Example 1. Moreover, like Example 1, 5 mass parts of photochromic compounds (PC1) were blended with respect to the urethane polymer (A component) which has a polymerizable group (actual usage-amount 0.25g). Also, using the obtained photochromic composition, a photochromic laminate was produced in the same manner as in Example 1, and then a photochromic lens was produced. Also, when Irgacurel 800 (P5) was used as a polymerization initiator, a photochromic laminate was produced in the following procedure. The evaluation results of various photochromic laminates and photochromic lenses obtained above are shown in Table 4 and Table 6.

[0454] (Production of photochromic laminates (o...

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Abstract

To provide a photochromic composition which functions as an adhesive layer for bonding two optical sheets that are formed of a polycarbonate resin or the like, so that a laminate that is obtained by bonding two optical sheets with the composition being sandwiched therebetween has excellent adhesion, heat resistance and photochromic properties. In particular, to provide a photochromic composition which is capable of forming an adhesive layer that is not decreased in the adhesion between the optical sheets even in cases where the adhesive layer is in contact with hot water. Provided is a photochromic composition which contains a urethane polymer having a polymerizable group (component A) and a photochromic compound (component B).

Description

technical field [0001] The present invention relates to a novel photochromic composition. Specifically, it relates to a novel photochromic composition ideally used as a photochromic adhesive for bonding optical sheets or films made of polycarbonate resin or the like. Furthermore, the present invention relates to an optical unit including a laminated structure in which optical sheets or optical films are bonded to each other via an adhesive sheet (layer) made of the photochromic composition. Background technique [0002] In recent years, mainly in the United States, plastic lenses made of polycarbonate resin, which are transparent and have excellent impact resistance, have rapidly increased in demand for anti-glare sunglasses. In addition, such plastic sunglasses contain photochromic compounds, which can change the transmittance and adjust the anti-glare performance according to the brightness of the surroundings, and such plastic photochromic sunglasses (photochromic lenses...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/02G02B5/23G02C7/02G02C7/10
CPCC09K2211/1011C09K2211/1033G02B1/041G02C7/102G02B5/23C09K2211/1007C09K2211/1029C09K9/02C09K2211/1088Y10T156/10C08K5/0041C08G18/10C08G18/0823C08G18/0809G02F2202/14C08G18/12
Inventor 平连利光森力宏清水康智
Owner TOKUYAMA CORP
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