S-alkyl thiocarbamate base lens resin
US4689387A · kind A · utility
59Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 24, 1986 |
| Grant date | Aug 25, 1987 |
| Priority date | — |
| Expiry date | Mar 24, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An S-alkyl thiocarbamate base lens resin is obtained by reacting one or more NCO-containing compounds, such as xylylene diisocyanate, hexamethylene diisocyanate and/or tetrachloroxylylene diisocyanate, with one or more SH-containing aliphatic compounds, for example, a di(2-mercaptoalkyl) ether.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.