Polythiol composition for plastic lens
US10669367B2 · kind B2 · utility
0Cited by
7References
6Claims
0Family size
Assignee
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Key dates
| Filing date | Feb 2, 2018 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | May 28, 2038 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An embodiment relates to a polythiol composition for a plastic lens. The polythiol composition for a plastic lens according to the embodiment can produce a clear and transparent plastic lens by way of polymerizing such raw materials as a polythiol compound, an isocyanate, a photoactive color correcting agent, and the like, followed by a simple post-process such as irradiation of ultraviolet rays. In addition, since the process for preparing the lens is simple and economical, the lens is advantageously used for manufacturing various plastic lenses such as eyeglass lenses and camera lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.