Optically clear silicone compositions

US5077335A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Peter Schwabe · Leverkusen, DE
• Reiner Voigt · Leverkusen, DE
• Ottfried Schlak · Cologne, DE
• Otto-Christian Geyer · Wetzlar, DE

Key dates

• Filing date: Nov 29, 1989
• Grant date: Dec 31, 1991
• Expiry date: Nov 29, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B56/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

The present invention relates to optically clear polysiloxane-based compositions which are employed, in particular, for the production of contact optical articles such as contact lenses, scleral lenses and intraocular lenses.