Polyurethanes made from polysiloxane/polyol macromers

US6271332A · kind A · utility

Assignee

• Novartis AG · CH

Inventors

• Dieter Lohmann · Münchenstein, CH
• Jens Hopken · Lörrach, DE
• Angelika Domschke · Duluth, US

Key dates

• Filing date: Apr 20, 1999
• Grant date: Aug 7, 2001
• Expiry date: Apr 20, 2019

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention describes a polymer and a precursor thereof; a prepolymer made essentially from a macromer that is cross-linked, for example, via its free hydroxy groups with a polyisocyanate, the macromer being made essentially from a polysiloxane and a polyol component; processes for the production of such prepolymers and polymers; the use of such polymers, for example, as artificial corneas, as molded articles, especially as contact lens material; also the use of a prepolymer or polymer for coating surfaces, especially functionalized polymer surfaces.