Red-light filtering ink binder for contact lenses

A colored contact lens, comprising:

• a pupil section;
• an iris section having an area and circumferentially surrounding the pupil section;
• and
• a colored pattern extending across a portion of the area of the iris section in a geometrical configuration providing from about 95% to about 98% filtering of red-light through the colored contact lens at a wavelength of from about 550 nanometers (nm) to about 800 nm, the colored pattern comprising a polymerization product of a red-light filtering ink binder comprising (a) a solvent, and (b) a silicone copolymer comprising a copolymerization product of a polymerization composition comprising (i) an alkylacrylamide monomer, (ii) a hydroxyethyl acrylate monomer, (iii) a non-bulky organosilicon-containing monomer having an ethylenically unsaturated reactive end group, (iv) a bulky siloxane monomer having an ethylenically unsaturated reactive end group, and (v) a red-light filtering compound filtering from about 95% to about 98% of red-light through the colored contact lens at a wavelength of from about 550 nm to about 800 nm, wherein the red-light filtering compound has one or more ethylenically unsaturated reactive end groups.

The colored contact lens according to claim 13, wherein the alkylacrylamide monomer is N,N-dimethylacrylamide, claim 18 or 19, wherein the non-bulky organosilicon-containing monomer is represented by the following structure:

• wherein V is an ethylenically unsaturated polymerizable group, L is a linker group or a bond;
• R1, R2, R3, R4, R5, R6, R7, R8, and R9 are independently hydrogen an alkyl group, a haloalkyl group, a cycloalkyl group, a heterocycloalkyl group, an alkenyl group, a halo alkenyl group, or an aromatic group;
• R10 and R11 are independently hydrogen or alkyl wherein at least one of R10 and R11 is hydrogen;
• y is 2 to 7 and n is 1 to 100, or the non-bulky organosilicon-containing monomer is represented by the following structure:
• wherein R12 is H or methyl;
• X is O or NR16;
• wherein R16 is hydrogen or C1 to C4 alkyl, which may be further substituted with one or more hydroxyl groups;
• R13 is a divalent alkyl group, which may further be functionalized with a group selected from the group consisting of an ether group, a hydroxyl group, a carbamate group and combinations thereof, each R14 is independently a phenyl or C1 to C4 alkyl which may be substituted with fluorine, hydroxyl or an ether;
• R15 is a C1 to C4 alkyl;
• and a is 2 to 50, and the bulky siloxane monomer is represented by the following structure:
• wherein X denotes —O— or —NR19— where each R19 is hydrogen or a C1-C4 alkyl;
• R17 independently denotes hydrogen or methyl;
• each R18 independently denotes a lower alkyl radical, a phenyl radical or a group represented by the following structure:
• wherein each R18′ independently denotes a lower alkyl radical or a phenyl radical;
• and h is 1 to 10;
• or the following structure:
• wherein X denotes —NR19—;
• wherein R19 denotes hydrogen or a C1-C4 alkyl;
• R17 denotes hydrogen or methyl;
• each R18 independently denotes a lower alkyl radical, a phenyl radical or a group represented by the following structure:
• wherein each R18′ independently denotes a lower alkyl radical or a phenyl radical;
• and h is 1 to 10.