Thiophosphine compounds and methods of making polymerizable compositions containing them and their use for making ophthalmic lenses

US7129321B2 · kind B2 · utility

Assignee

• Essilor International (Compagnie Generale d'Optique) · FR

Inventors

• Sirisoma Wanigatunga · Bound Brook, US
• Aref Jallouli · Midland, US
• Martin Rickwood · Clarks Summit, US
• Yassin Turshani · Largo, US

Key dates

• Filing date: Mar 24, 2004
• Grant date: Oct 31, 2006
• Expiry date: Mar 29, 2024

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/05
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Thiophosphine compounds (also named phosphine sulfide compounds) and their use for making polymerizable compositions which after polymerization give optically transparent articles, such as ophthalmic lenses, having improved mechanical and optical properties and in particular having an improved UV cut.