Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Patent
1983-06-23
1985-07-09
Lieberman, Allan
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Processes of preparing a desired or intentional composition...
20415922, 525100, 526279, 528 26, C08J 328, C08L 3108, C08L 5300, C08L 8300
Patent
active
045283010
ABSTRACT:
A new contact lens material that is gas permeable, surface wettable, and relatively hard is disclosed. Also disclosed are contact lenses made of this new material, which are comfortable to wear. The new contact lens material is the copolymerization product of a reaction mixture comprising: (1) styrene or a ring substituted styrene; (2) a vinyl alcohol ester such as vinyl acetate; (3) a polyethylene glycol ester such a pentaethyleneglycol monomethacrylate; (4) a substituted polysiloxane such as dimethyl polysiloxane or a substituted silane; and, optionally, (5) a cross-linking agent such as divinyl benzene.
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Article entitled "Assessing the Wesley-Jessen Airlens" by Josephson, Caffery and Pope; Jun., 1983 edition of Contact Lens Forum, at pp. 55 through 62.
GBF, Inc.
Lieberman Allan
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