Ultraviolet absorbing lenses and method of making the same
First Claim
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1. A process for preparing an ultraviolet radiation absorbing contact or intraocular lens material, comprising the steps of preparing an aqueous solution of effective amounts of a halotriazine reactive ultraviolet radiation absorbing agent and a base, wherein said reactive ultraviolet radiation absorbing agent is of the formula:
- ##STR8## where X=Cl or F;
A=an ultraviolet radiation absorbing component selected from the group consisting of ##STR9## where R1 -R3 are selected from the group consisting of hydrogen, alkyl chains varying from C1 to C18, alkoxy, halogen, nitro, hydroxy, carboxy, sulfonic acid, or sulfonic acid salt substituents; and
B=an aqueous soluble moiety of the formula ##STR10## where Y is an amine salt or an alkali salt; and
R1 -R2 are selected from the group consisting of hydrogen, alkyl chains varying from C1 to C18, alkoxy, halogen, nitro, hydroxy, carboxy, sulfonic acid, or sulfonic acid salt substituents,maintaining said solution for a preselected period of time at a temperature up to at least 30°
C.;
adding a polymeric contact or intraocular lens material to said solution;
said polymeric lens material having an exoskeletal functional group selected from the group consisting of hydroxyl, amino, amide and mercapto groups and removing said polymeric lens material from the solution after a preselected time.
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Abstract
An ultraviolet radiation absorbing contact lens and method of 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;
A=an ultraviolet radiation absorbing component; and
B=an aqueous soluble moiety.
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9 Claims
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1. A process for preparing an ultraviolet radiation absorbing contact or intraocular lens material, comprising the steps of preparing an aqueous solution of effective amounts of a halotriazine reactive ultraviolet radiation absorbing agent and a base, wherein said reactive ultraviolet radiation absorbing agent is of the formula:
- ##STR8## where X=Cl or F;
A=an ultraviolet radiation absorbing component selected from the group consisting of ##STR9## where R1 -R3 are selected from the group consisting of hydrogen, alkyl chains varying from C1 to C18, alkoxy, halogen, nitro, hydroxy, carboxy, sulfonic acid, or sulfonic acid salt substituents; and B=an aqueous soluble moiety of the formula ##STR10## where Y is an amine salt or an alkali salt; and R1 -R2 are selected from the group consisting of hydrogen, alkyl chains varying from C1 to C18, alkoxy, halogen, nitro, hydroxy, carboxy, sulfonic acid, or sulfonic acid salt substituents, maintaining said solution for a preselected period of time at a temperature up to at least 30°
C.;
adding a polymeric contact or intraocular lens material to said solution;
said polymeric lens material having an exoskeletal functional group selected from the group consisting of hydroxyl, amino, amide and mercapto groups and removing said polymeric lens material from the solution after a preselected time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- ##STR8## where X=Cl or F;
-
9. An ultraviolet radiation absorbing contact or intraocular lens, comprising a polymeric contact or intraocular lens material said polymeric lens material having an exoskeletal functional group selected from the group consisting of hydroxyl, amino, amide and mercapto groups to which is covalently bonded at least one halotriazine reactive ultraviolet radiation absorbing agent of the formula:
- ##STR11## where X=Cl or F;
A=an ultraviolet radiation absorbing component; and B=an aqueous soluble moiety or mixtures thereof, wherein said ultraviolet radiation absorbing component is selected from the group consisting of;
##STR12## where R1 -R3 are selected from the group consisting of hydrogen, alkyl chains varying from C1 to C18, alkoxy, halogen, nitro, hydroxy, carboxy, sulfonic acid, or sulfonic acid salt substituents; andwherein said aqueous soluble moiety has the formula;
##STR13## where;
Y is an amine salt or an alkali salt; andR1 -R2 are selected from the group consisting of H, alkyl chains varying from C1 to C18, alkoxy, halogen, nitro, hydroxy, carboxy, sulfonic acid, or sulfonic acid salt substituents.
- ##STR11## where X=Cl or F;
Specification