Ultraviolet radiation absorbing agent for bonding to an ocular lens
US5098445A · kind A · utility
44Cited by
8References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 22, 1990 |
| Grant date | Mar 24, 1992 |
| Priority date | — |
| Expiry date | Jan 22, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D403/12
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
An ultraviolet radiation absorbing contact lens and method ofl making the same, comprising a copolymeric hydrogel material to which is covalently bonded at least one halotriazine reactive ultraviolet radiation absorbing agent of the formula: ##STR1## where X=Cl or F; PA0 E,A=an ultraviolet radiation absorbing component; and PA0 E.sup.1 =an aqueous soluble moiety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.