Inventors:
Syed H. Askari - Sunnyvale CA
Shao C. Jeang - Cupertino CA
Herman H. Neidlinger - San Jose CA
Assignee:
Pilkington Visioncare, Inc. - Menlo Park CA
International Classification:
C08F24600
C08F22024
G02B 104
Abstract:
A polymeric composition suitable for use in ophthalmic devices such as contact lenses, intraocular lenses and other medical and non-medical devices which composition comprises a copolymer that incorporates repeating units containing a solvolyzable group and various desired hydrophilic repeating units in predetermined ratios, which copolymer is mechanically stable and upon hydration the dimensions of polymeric articles which as formed therefrom can be controlled. In particular, the hydrophilic compositions resulting from the invention are user in applications where stresses and distortions of the polymer article due to water absorption etc. must be minimized or, if possible, eliminated.