Polymerizable composition for optical material, optical material produced from same, and process for producing same
US10196501B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2015 |
| Grant date | Feb 5, 2019 |
| Priority date | — |
| Expiry date | Apr 30, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C7/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Provided is a polymerizable composition for an optical material including (A) isocyanates having two or more isocyanato groups, which include at least an isophorone diisocyanate, (B) at least one predetermined thiol having two or more mercapto groups, (C) an acidic phosphoric acid ester represented by General Formula (1), and (D) a tin compound represented by General Formula (2), in which the acidic phosphoric acid ester (C) is contained in an amount of 0.05 parts by weight to 0.9 parts by weight, with respect to a total of 100 parts by weight of the isocyanates (A) and the thiols (B), and the tin compound (D) is contained in such an amount that the content of tin is 0.05 parts by weight to 0.3 parts by weight, with respect to a total of 100 parts by weight of the isocyanates (A) and the thiols (B).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.