High refractive index silicone compositions

Details High refractive index silicone compositions High refractive index silicone compositions

1993-12-23

1995-08-22

Bleutge, John C.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

525478, 525479, 528 15, 528 31, 528 32, 524862, 523105, C08K 336

Patent

active

054441064

ABSTRACT:
Organosiloxane compositions curable to optically clear, high refractive index elastomers are disclosed. The cured compositions have superior post-folding high resolution recovery making them suitable for fabricating foldable intraocular lenses used in small-incision ophthalmic surgeries. The organosiloxane compositions include first and second vinyl terminated organosiloxanes differing in molecular weights, each containing diphenylsiloxane and dimethylsiloxane, and, in addition, fumed silica, a crosslinking reagent, a platinum containing catalyst, and optionally an ultraviolet absorbing compound.

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