Contact lenses with hydrophilic crosslinkers

US5565539A · kind A · utility

Assignee

• Johnson & Johnson Vision Products Inc. · US

Inventors

• Ivan M. Nunez · Jacksonville, US
• Frank Molock · Orange Park, US
• Laura D. Elliott · Jacksonville, US

Key dates

• Filing date: Jun 7, 1995
• Grant date: Oct 15, 1996
• Expiry date: Jun 7, 2015

Classification

• Technology area (CPC G): Physics
• CPC primary: G02B1/043
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Hydrophilic contact lenses made using a crosslinking agent of the formula EQU A--X--(O--(C(O).sub.i --R--(C(O)).sub.i --O--X).sub.n -A wherein R contains one or more cyclic or bicyclic moiety, X is linear or branched alkyl or alkenyl, optionally substituted, and A is acrylate, methacrylate, vinylbenzoyloxy or vinylphenoxy, exhibit superior hydrophilicity, oxygen transmissivity, and physical properties.