Silicone-containing contact lens material and contact lenses made thereof
AssigneePolymer Technology Corporation
InventorEdward J. Ellis
Life of this patent
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Abstract
According to the invention contact lenses are formed of polymerizable substituted alkyl and aryl siloxanes having one or more unsaturated, polymerizable groups. These compounds preferably contain substituted acetoxy or carbomethoxy groups which confer inherent wettability and high polarity. Novel organosiloxanes are provided particularly adaptable for use in forming contact lenses by themselves or copolymerized with other monomeric materials to form useful polymeric materials for contact lenses.
Claims31
A contact lens material formed of a siloxane containing one or more unsaturated polymerizable groups for use in contact lens having high oxygen permeability, dimensional stability, inherent wettability, high light transmission, durability, biocompatibility, non-hydrating, chemical stability, and high resistance to proteinaceous accumulation as well as being scratch resistant having the following formula:
- ##STR4## wherein:
- X is selected from the group consisting essentially of unsaturated polymerizable methacrylate, acrylate, hydrogen or "Z" groups and mixtures thereof,
- R is selected from the group consisting essentially of alkylene, cycloalkylene groups having from 1 to about 10 carbon atoms, arylene groups and mixtures thereof,
- a is an integer from 0 to about 10 where each "a" may be the same or different,
- n is an integer from 0 to about 10,
- Z groups are selected from the group consisting essentially of acetoxy, carbomethoxy, glycidoxy, glyceryl, and carboxy with at least one "X" being a "Z" group.
A contact lens formed of a siloxane containing one or more unsaturated polymerizable groups having the following formula:
- ##STR5## wherein:
- X is selected from the group consisting essentially of unsaturated polymerizable methacrylate, acrylate, hydrogen or "Z" groups and mixtures thereof,
- R is selected from the group consisting essentially of alkylene, cycloalkylene groups having from 1 to about 10 carbon atoms, arylene groups and mixtures thereof,
- a is an integer from 0 to about 10 where each "a" may be the same or different,
- n is an integer from 0 to about 10,
- Z groups are selected from the group consisting essentially of acetoxy, carbomethoxy, glycidoxy, glyceryl, and carboxy with at least one "X" being a "Z" group.
Dependencies are inferred from the claim text.