Optical material formed by casting polymerization of a phenyl phosphine monomer
US5086140A · kind A · utility
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Key dates
| Filing date | Nov 13, 1990 |
| Grant date | Feb 4, 1992 |
| Priority date | — |
| Expiry date | Nov 13, 2010 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An optical material of a high refractive index is formed of a copolymer obtained by polymerizing 10-90 wt. % of a monomer represented by the following formula (I) and 90-10 wt. % of a monomer copolymerizable with the first-mentioned monomer. ##STR1## wherein R is a hydrogen atom or methyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.