Macromer forming catalysts

US6936641B2 · kind B2 · utility

Assignee

• Johnson & Johnson Vision Care, Inc. · US

Inventors

• Frank Molock · Orange Park, US
• Annie C. Maiden · Jacksonville, US
• Xiaoping Lin · Jacksonville, US
• Carrie Caison · Orange Park, US
• Michael R. Clark · Jacksonville, US
• Robert Love · Hyrum, US

Key dates

• Filing date: Jun 25, 2002
• Grant date: Aug 30, 2005
• Expiry date: Jan 20, 2023

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F290/046
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention is the method of preparing macromer for use in making ophthalmic lenses comprising combining two or more monomers and using a macromer-forming catalyst, wherein the macromer-forming catalyst comprises triethylamine or bismuth.