Continuous wear hydratable, boilable methylmethacrylate copolyme

Details Continuous wear hydratable, boilable methylmethacrylate copolyme Continuous wear hydratable, boilable methylmethacrylate copolyme

1979-07-23

1981-08-18

Kight, III, John

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526312, 526320, 351160H, C08F 2058, G02C 704

Patent

active

042847494

ABSTRACT:
A gas permeable continuous wear contact lens material made by copolymerizing methylmethacrylate, N-(1,1-dimethyl-3-oxobutyl) acrylamide, propylene glycol monomethacrylate and methacrylic acid to form a hard solid contact lens material which may be made soft and hydrophilic by placing the lens in an alkaline solution and may be sterilized by boiling.

REFERENCES:
patent: 3803093 (1974-04-01), Neefe
patent: 3813447 (1974-05-01), Tanaka et al.
patent: 3983083 (1976-09-01), Kaetsu et al.
patent: 3984485 (1976-10-01), Neefe
patent: 4143017 (1979-03-01), Tarumi et al.
patent: 4163608 (1979-08-01), Neefe

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