Oxygen-permeable transparent polymer compositions for contact le

Details Oxygen-permeable transparent polymer compositions for contact le Oxygen-permeable transparent polymer compositions for contact le

1990-01-18

1992-11-24

Bleutge, John C.

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

Synthetic resins

From silicon reactant having at least one...

351160R, 525105, 525937, 526279, C08G 7700

Patent

active

051662981

ABSTRACT:
An oxygen-permeable transparent polymer composition for contact lenses of the rigid type comprises at least a first constituent having ethylene double bonds of the type which is polymerizable in a rigid matrix, and a second constituent formed by a silane monomer containing at least two silyl -SiH groups per molecule. The composition can include a third constituent of the polyorganosiloxysilane type.

REFERENCES:
patent: 3139409 (1964-06-01), Meston
patent: 4332922 (1982-06-01), Kossmehl et al.
patent: 4487905 (1984-12-01), Mitchell
patent: 4594401 (1986-06-01), Takahashi et al.
patent: 4622376 (1986-11-01), Misura et al.
G. Odian, Principles of Polymerization, 1970, pp. 32 and 33.

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