Hydrogels and methods for their production
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 25, 2005
Grant Date -
Mar 21, 2002
app pub date -
Apr 10, 2001
filing date -
Apr 10, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to new hydrogels with improved mechanical properties and methods of their preparation. The hydrogels are formed from hydrophilic polymers having function hydroxyl groups and have low elasticity modulus typically less than about 10 kPa, a tensile strength above 1 MPa, an elongation above 50% which makes suitable as medical implants, in particular intraocular lenses. The hydrogels are prepared by a crosslinking method with a comparatively low concentration of hydrophilic polymer of a sufficiently high molecular weight dissolved in a good solvent.
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International Classification(s)
Cited Art Landscape
Patent Citation Ranking
- 16 Citation Count
- C08F Class
- 69.99 % this patent is cited more than
- 20 Age
