Patent ID: 11945895
Assignee: ALCON INC.
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C  G | IPC C  G

Claim 9:
10. The photochromic polydiorganosiloxane vinylic crosslinker of claim 6, wherein said at least one reactive photochromic compound comprises 3,3-bis(4-methoxyphenyl)-6,11-dimethyl-13-hydroxyethoxy-13-phenyl-3H,13H-indeno [2′,3′:3,4]naphtho[1,2-b]pyran; 3,3-bis(4-methoxyphenyl)-6,11-dimethyl-13-(2-hydroxycarbonylethyl)carboxyethoxy-13-phenyl-3H,13H-indeno [2′,3′:3,4]naphtho[1,2-b]pyran; 3,3-bis(4-methoxyphenyl)-6,11-dimethyl-13-hydroxy-13-phenyl-3H,13H-indeno [2′,3′:3,4]naphtho[1,2-b]pyran; or a mixture thereof.