Aromatic-based polysiloxane prepolymers and ophthalmic...

Details Aromatic-based polysiloxane prepolymers and ophthalmic... Aromatic-based polysiloxane prepolymers and ophthalmic...

2007-10-09

2007-10-09

Moore, Margaret G. (Department: 1712)

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C528S032000, C528S043000

Reexamination Certificate

active

11096455

ABSTRACT:
A polysiloxane comprises diaryl, dialkyl, and arylalkyl siloxane units, and further has at least a functional group. Such polysiloxane can be further copolymerized with an additional monomer to produce polymeric compositions suitable for making ophthalmic devices. The additional monomer can be selected to produce desirable properties for ophthalmic applications, such as high refractive index and/or high elongation.

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Hawley' Condensed Chemical Dictionary, definition of “cross-linking”, 2002.

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