Invention Application
- Patent Title: PHOTOCHROMIC OPTICAL ARTICLE AND METHOD FOR MANUFACTURING SAME
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Application No.: US17599830Application Date: 2020-04-03
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Publication No.: US20220162486A1Publication Date: 2022-05-26
- Inventor: Katsuhiro MORI , Takao NOGUCHI , Junji MOMODA
- Applicant: TOKUYAMA CORPORATION
- Applicant Address: JP Shunan-shi, Yamaguchi
- Assignee: TOKUYAMA CORPORATION
- Current Assignee: TOKUYAMA CORPORATION
- Current Assignee Address: JP Shunan-shi, Yamaguchi
- Priority: JP2019-071587 20190403,JP2019-237232 20191226,JP2019-237233 20191226
- International Application: PCT/JP2020/015374 WO 20200403
- Main IPC: C09J175/04
- IPC: C09J175/04 ; C09K9/02 ; C09J11/06 ; C08G18/75 ; C08G18/38 ; G02C7/10

Abstract:
The present invention relates to a photochromic optical article including a pair of optical article plates bonded together through an adhesive layer containing a photochromic compound and at least one resin selected from a urethane resin, an epoxy resin, and an acrylic resin, wherein a deviation of the thickness of the adhesive layer on a concentric circle from the central point of the pair of optical article plates is within ±10%.
In accordance with the present invention, in the photochromic optical article formed of a pair of optical article plates bonded together through an adhesive layer, a photochromic optical article in which the thickness of the photochromic adhesive layer is prescribed, and which is free from problems, such as a lowering of the appearance quality, can be provided.
In accordance with the present invention, in the photochromic optical article formed of a pair of optical article plates bonded together through an adhesive layer, a photochromic optical article in which the thickness of the photochromic adhesive layer is prescribed, and which is free from problems, such as a lowering of the appearance quality, can be provided.
Information query
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