Polymerizable compositions based on difunctional monomers, resins and ophthalmic articles containing same
US6329482A · kind A · utility
10Cited by
5References
33Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 15, 2000 |
| Grant date | Dec 11, 2001 |
| Priority date | — |
| Expiry date | Feb 15, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/041
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The object of the present invention is a radically polymerisable composition comprising a mixture of at least: one or more (meth)acrylate difunctional monomer(s) of type (a): of formula (A) and/or of formula (A'); and one or more alkenic difunctional monomers of type (b): of formula (B) and/or of formula (B') and/or of formula (B"). The invention also relates to the resins obtained by polymerization of the compositions and the ophthalmic articles constituted, wholly or in part, of the resins, and the articles may optionally have photochromic properties. ##STR1##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.