Polymerizable composition and organic glass
US5556931A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1995 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Jul 6, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A polymerizable composition comprising at least two di(meth)acrylate compounds of the specific general formula (I), e.g., dimethacrylate compounds of polyethylene glycol adduct of 2,2-bis(4-hydroxyphenyl)propane, wherein the content of di(meth)acrylate compound of the general formula (I) in which m+n is 2 to 3 is 30 to 80 mol % and the content of di(meth)acrylate compound of the general formula (I) in which m+n is 6 to 12 is 20 to 50 mol %, and organic glass formed of a polymer from the polymerizable composition, the polymerizable composition being suitable as a transparent resin, particularly as a raw material for an ophthalmic lens which is free of optical strain, has sufficient hardness and is excellent in impact resistance and light resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.