Method of making a contact lens material and a lens therefrom

Details Method of making a contact lens material and a lens therefrom Method of making a contact lens material and a lens therefrom

1980-08-14

1983-03-01

Henderson, C. A.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

203 6, 203 8, 203 29, 523106, 526317, 351160H, C08F 434, C08F 202

Patent

active

043755348

ABSTRACT:
A new and improved contact lens is provided and is made by a process which uses a distillation step with an addition of a carbon decolorizing agent to the solution being distilled. The carbon decolorizing agent prevents curdling and removes impurities in the distillation step. The result is a contact lens with a very high water content and with good oxygen permeability characteristics.

REFERENCES:
patent: 3709928 (1973-01-01), Murayama

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