Silicone hydrogels having consistent concentrations of multi-functional polysiloxanes

US8097565B2 · kind B2 · utility

Assignee

• Johnson & Johnson Vision Care, Inc. · US

Inventors

• Gregory A. Hill · Atlantic Beach, US
• John C. Heaton · Atlantic Beach, US
• Michael R. Clark · Jacksonville, US
• Shivkumar Mahadevan · Orange Park, US
• Carrie Caison · Orange Park, US
• Frank Molock · Orange Park, US

Key dates

• Filing date: Jun 4, 2004
• Grant date: Jan 17, 2012
• Expiry date: Apr 10, 2029

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L43/04
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process comprising forming a monomer mixture comprising at least one monofunctional silicone containing component which comprises at least one difunctional byproduct and adding to said monomer mixture a normalizing amount of said at least one difunctional byproduct and curing said monomer mixture to form a biomedical device.