Patent ID: 11867874
Assignee: ALCON INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC G  C | IPC C  G

Claim 11:
12. The embedded silicone hydrogel contact lens of claim 11, wherein said at least one second polysiloxane vinylic crosslinker comprises a vinylic crosslinker of formula (III), in which:
d1 is an integer of from 30 to 500 and d2 is an integer of from 1 to 75, provided that d2/d1 is from about 0.035 to about 0.15;
X01 is O or NRIN in which RIN is hydrogen or C1-C10-alkyl;
RI0 is hydrogen or methyl;
RI1 and RI2 independently of each other are a substituted or unsubstituted C1-C10 alkylene divalent radical or a divalent radical of —RI4-0—O—RI5— in which RI4 and RI5 independently of each other are a substituted or unsubstituted C1-C10 alkylene divalent radical;
RI3 is a monovalent radical of any one of formula (IIIa) to (IIIe), k1 is zero or 1; m1 is an integer of 2 to 4; m2 is an integer of 1 to 5; m3 is an integer of 3 to 6; m4 is an integer of 2 to 5;
RI6 is hydrogen or methyl;
RI7 is a C2-C6 hydrocarbon radical having (m2+1) valencies;

RI8 is a C2-C6 hydrocarbon radical having (m4+1) valencies;
RI9 is ethyl or hydroxymethyl;
RI10 is methyl or hydroxymethyl;
RI11 is hydroxyl or methoxy;
XI1 is a sulfur linkage of —S— or a tertiary amino linkage of —NRI12— in which RI2 is C1-C1 alkyl, hydroxyethyl, hydroxypropyl, or 2,3-dihydroxypropyl; and
XI2 is an amide linkage of, in which RI13 is hydrogen or C1-C10 alkyl.