Hydrophilic, soft and oxygen permeable copolymer compositions

Details Hydrophilic, soft and oxygen permeable copolymer compositions Hydrophilic, soft and oxygen permeable copolymer compositions

1978-07-17

1982-08-10

Bleutge, John C.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

351160H, 264 11, 526218, 526227, 526264, 526265, 526279, C08F 2010, C08F 2606, C08F 3008, C08F22026

Patent

active

043439276

ABSTRACT:
A new composition of matter specially adapted for the production of contact lenses, artificial eyes or other prosthetic devices. The composition has the characteristics of increased hydrophilicity, softness after hydration and oxygen permeability. The composition is a solid copolymer of comonomers consisting essentially of about 15 to about 65% by weight of one or more of the hydrophilic amide group containing monomers and about 10 to about 75% by weight of one or more of the polysiloxanylalkyl methacrylates or acrylates. Optionally, about 0.1 to about 65% by weight of at least one property modifier, a vinyl group containing monomer such as methyl methacrylate, can be employed into the copolymers. The inventive material is optionally transparent, translucent or opaque depending on the type, composition and relative content of the comonomers used. In general, the transparent composition is suitable for use in making contact lenses.

REFERENCES:
patent: 3808178 (1974-04-01), Gaylord
patent: 3948871 (1976-04-01), Butterfield et al.
patent: 4139513 (1979-02-01), Tanaka et al.
patent: 4139692 (1979-02-01), Tanaka et al.
Derwent Abst. 617104/35, JS 2084258-T35, Toyo Contact Lens.

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