Ethylenically unsaturated polymerizable groups comprising polycarbosiloxane monomers
AssigneeBausch & Lomb Incorporated
InventorsAlok Kumar Awasthi, Jay F. Kunzler
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Abstract
The present application relates to novel monomers comprising polycarbosiloxane monomers useful in certain specific embodiments in the manufacture of devices. More particularly, the present application relates to certain ethylenically unsaturated free radical polymerizable monomers comprising polycarbosiloxane monomers. Even more particularly, the present application pertains to monomers comprising polycarbosiloxane monomers which further comprise at least two ethylenically unsaturated free radical polymerizable groups.
Claims20
An article of manufacture selected from the group consisting of contact lenses, phakic and aphakic intraocular lenses and corneal implants;
- wherein the article is formed from polymerizing a monomer mixture including an ethylenically unsaturated free radical polymerizable polycarbosiloxane monomer of formula (I) and at least a second free radical copolymerizable monomer, wherein the polycarbosiloxane monomer of formula (I) is present at from about 0.1 to about 30 percent by weight of the monomer mixture:
- wherein R1, R2, R4, R5, R6, R7, R8, R11, R12, R13, R14, R15 and R16 are each independently a monovalent atom or group selected from H, alkyl, halo alkyl, heteroalkyl, cyclo alkyl, heterocyclo alkyl, alkenyl, halo alkenyl, or aromatic;
- wherein R3 is a monovalent atom or group selected from H, alkyl, halo alkyl, heteroalkyl, cyclo alkyl, heterocyclo alkyl, alkenyl, halo alkenyl, aromatic or methacryloxypropyl;
- wherein at least one of R9 or R10 is hydrogen, and the other of R9 and R10 may not be present when monomers of formula (I) comprise -[silyl-alkenyl-siloxy]- units, and when present in a monomer comprising -[silyl-alkyl-siloxy]- units is independently a monovalent atom or group selected from H, alkyl, alkene, alkyne;
- y is 2-7;
- n is 1-100;
- n1 is greater than zero and up to 10;
- L is the same or different and is a divalent linker group or a bond;
- and V is an ethylenically unsaturated free radical polymerizable monovalent group.
Dependencies are inferred from the claim text.