Hydrophilic copolymer of N,N-(C.sub.1 -C.sub.2 alkyl) acrylamide

Details Hydrophilic copolymer of N,N-(C.sub.1 -C.sub.2 alkyl) acrylamide Hydrophilic copolymer of N,N-(C.sub.1 -C.sub.2 alkyl) acrylamide

1973-12-28

1978-01-10

Phynes, Lucille M.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

264 1, 351160, 526303, 526916, C08L 3326

Patent

active

040678393

ABSTRACT:
A hydrophilic copolymer of N,N-(C.sub.1 -C.sub.2 alkyl) acrylamide is disclosed. The copolymer is formed by reacting, based on 100 parts, from 20-80 parts of the C.sub.1 -C.sub.2 alkyl substituted acrylamide, 80-20 parts of C.sub.1 -C.sub.4 alkyl acrylates, methacrylates, or combinations, and small amounts of a cross-linking agent. The resulting copolymerization product can be equilibrated with water or other aqueous solutions to form hydrogels useful in forming shaped hydrogel articles. One particular shaped article which can be formed is a hydrophilic contact lens. A process for forming the hydrogels is also disclosed.

REFERENCES:
patent: 3499862 (1970-03-01), Wichterle
patent: 3699089 (1972-10-01), Wichterle
patent: 3758448 (1973-09-01), Stamberger
patent: 3787380 (1974-01-01), Stamberger
patent: 3792028 (1974-02-01), Seiderman
patent: 3803093 (1974-04-01), Neefe

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