Cast resin for optical use
US5336743A · kind A · utility
5Cited by
2References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 1992 |
| Grant date | Aug 9, 1994 |
| Priority date | — |
| Expiry date | Oct 19, 2012 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A cast resin for optical use is obtained by polymerizing a diallylphthalate component represented by the formula: ##STR1## wherein --R.sub.1 stands for a hydrogen atom or a methyl group, --OR.sub.2 for a dihydric alcohol residue having 1-5 carbon atoms, and m for an integer of 0-20, with an alkyleneglycol bis-allylcarbonate component represented by the formula: ##STR2## wherein --R.sub.4 stands for a hydrogen atom or a methyl group, --OR.sub.3 for a dihydric alcohol residue having 1-10 carbon atoms, and n for an integer of 1-10. In addition to the above components, there may be added a vinyl compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.