Synthetic resin laminate having photochromic properties and lens using same
US10737471B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Mar 7, 2017 |
| Grant date | Aug 11, 2020 |
| Priority date | — |
| Expiry date | Jun 16, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/16
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
According to the present invention, a synthetic resin laminate comprising two transparent synthetic resin layers (A), two or more functional layers (B) having photochromic properties interposed between the two synthetic resin layers (A), and a transparent resin layer (C) interposed between the two or more functional layers (B), wherein the functional layer (B) is a cured layer comprising a photochromic dye and obtained from a diisocyanate and a polyol can be provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.