Polymerizable composition for optical material
US10759895B2 · kind B2 · utility
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13Claims
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Key dates
| Filing date | Dec 26, 2018 |
| Grant date | Sep 1, 2020 |
| Priority date | — |
| Expiry date | Apr 22, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An embodiment relates to a polymerizable composition for an optical material and a polythiourethane-based compound prepared therefrom. The polythiourethane-based compound is excellent in appearance with low generation rates of stirae and bubbles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.