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Title:
LOW POLYDISPERSITY POLY-HEMA COMPOSITIONS
Document Type and Number:
WIPO Patent Application WO2003077792
Kind Code:
A3
Abstract:
The present invention relates to compositions comprising poly-HEMA having a peak molecular weight between about 25,000 and about 100,000, preferably between 25,000 and 80,000 and a polydispersity of less than about 2 to less than about 3.8 respectively and covalently bonded thereon, at least one cross-linkable functional group. The present invention further relates to low polydispersity poly-HEMA suitable for making the crosslinkable prepolymers, processes for functionalizing and purifying said poly-HEMA to form said crosslinkable prepolymers, viscous solutions made from said crosslinkable prepolymers, hydrogels made from said viscous solutions and articles made from said crosslinkable polymers, hydrogels and viscous solutions.

Inventors:
KINDT-LARSEN TURE
WOLFF PER
SORENSEN JENS-ERIK
STEENSTRUP FREDERIK RESEN
ROSSIGNOL HELENE
MOLOCK FRANK F
Application Number:
US0306835W
Publication Date:
June 30, 2005
Filing Date:
March 06, 2003
Export Citation:
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Assignee:
JOHNSON & JOHNSON VISION CARE, INC.
International Classes:
G02C7/04; C08F6/00; C08F8/00; C08F20/26; C08F20/28; C08F299/00; G02B1/04; (IPC1-7): C08F118/00
Foreign References:
US6709103B12004-03-23
Other References:
See also references of EP 1567567A2
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