Hydrogel material

Details Hydrogel material Hydrogel material

1993-07-30

1994-11-08

Michl, Paul R.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523107, 524544, 524547, 524548, 524549, 524916, 351160H, 526245, C08F24600, C08F22024, G02B 104

Patent

active

053627687

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.

REFERENCES:
patent: 4272422 (1981-06-01), Tanaka
patent: 4578504 (1986-03-01), Hammar et al.
patent: 4594401 (1986-06-01), Takahashi et al.
patent: 4638040 (1987-01-01), Hammar et al.
patent: 4820747 (1989-04-01), Chen
patent: 4921884 (1990-05-01), Hammer et al.
Derwent Abstract 91-924932/04, Basic Abstracts Journal, Section CH, Week 9104 27 Mar., 1991, Derwent Publications, Ltd., London, GB; Class A, p. 368.

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