Polythiol composition, optical composition, and optical product
US12421346B2 · kind B2 · utility
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Key dates
| Filing date | Nov 25, 2021 |
| Grant date | Sep 23, 2025 |
| Priority date | — |
| Expiry date | Nov 24, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polythiol composition according to exemplary embodiments includes a first polythiol compound which provides a maximum peak in a high performance liquid chromatography (HPLC) analysis graph obtained at a wavelength of 230 nm, and a second polythiol compound having a molecular weight greater than that of the first polythiol compound and represented by C9H20S6. A ratio of a peak area of the second polythiol compound to a peak area of the first polythiol compound, which are measured through the HPLC analysis graph at the wavelength of 230 nm, is 0.05 to 5.0%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.