Ionic silicone hydrogels having improved hydrolytic stability
US-9260544-B2 · Feb 16, 2016 · US
US11046636B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11046636-B2 |
| Application number | US-201916398722-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 30, 2019 |
| Priority date | Jun 29, 2018 |
| Publication date | Jun 29, 2021 |
| Grant date | Jun 29, 2021 |
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Described are polymerizable high energy light absorbing compounds of formula I: Wherein Y, Pg, R 1 , R 2 , R 3 , R 4 , R 5 , and R 6 are as described herein. The compounds absorb various wavelengths of ultraviolet and/or high energy visible light and are suitable for incorporation in various products, such as biomedical devices and ophthalmic devices.
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We claim: 1. A compound of formula I: wherein: Y is a linking group; P g is a polymerizable group; R 1 is H or C 1 -C 6 alkyl; R 2 and R 3 are independently C 1 -C 6 alkyl or cycloalkyl; R 4 is C 1 -C 6 alkyl; and R 5 and R 6 are independently H or C 1 -C 6 alkyl. 2. The compound of claim 1 wherein R 1 is H. 3. The compound of claim 1 wherein R 5 and R 6 are independently H or methyl. 4. The compound of claim 1 wherein Y comprises: C 1 -C 8 alkylene, alkyleneoxy, C 1 -C 8 oxaalkylene, C 1 -C 8 thiaalkylene, C 1 -C 8 alkylene-ester-C 1 -C 8 alkylene, C 1 -C 8 alkylene-amide-C 1 -C 8 alkylene, or C 1 -C 8 alkylene-amine-C 1 -C 8 alkylene. 5. The compound of claim 1 wherein P g comprises: styryl, vinyl carbonate, vinyl ether, vinyl carbamate, N-vinyl lactam, N-vinylamide, (meth)acrylate, or (meth)acrylamide. 6. The compound of claim 1 wherein R 2 , R 3 , and R 4 are independently C 1 -C 3 alkyl. 7. A compound of claim 1 that is: 2-(4-acetyl-3-amino-2,6-dimethoxyphenoxy)ethyl methacrylate; 2-((4-acetyl-3-amino-2,6-dimethoxyphenyl)thio)ethyl methacrylate; 2-((4-acetyl-3-amino-2,6-dimethoxyphenyl)(methyl)amino)ethyl methacrylate; 2-((4-acetyl-3-amino-2,6-dimethoxyphenyl)amino)ethyl methacrylate; N-(2-(4-acetyl-3-amino-2,6-dimethoxyphenoxy)ethyl)methacrylamide; N-(2-((4-acetyl-3-amino-2,6-dimethoxyphenyl)thio)ethyl)methacrylamide; N-(2-((4-acetyl-3-amino-2,6-dimethoxyphenyl)amino)ethyl)methacrylamide; N-(2-((4-acetyl-3-amino-2,6-dimethoxyphenyl)(methyl)amino)ethyl)methacrylamide; N-(2-(4-acetyl-3-amino-2,6-dimethoxyphenoxy)ethyl)acrylamide; N-(2-((4-acetyl-3-amino-2,6-dimethoxyphenyl)thio)ethyl)acrylamide; N-(2-((4-acetyl-3-amino-2,6-dimethoxyphenyl)amino)ethyl)acrylamide; N-(2-((4-acetyl-3-amino-2,6-dimethoxyphenyl)(methyl)amino)ethyl)acrylamide 3-(4-acetyl-3-amino-2,6-dimethoxyphenyl)propyl methacrylate N-(3-(4-acetyl-3-amino-2,6-dimethoxyphenyl)propyl)methacrylamide 4-acetyl-3-amino-2,6-dimethoxyphenethyl methacrylate; or N-(4-acetyl-3-amino-2,6-dimethoxyphenethyl)methacrylamide.
having amino groups bound to carbon atoms of six-membered aromatic rings of the carbon skeleton · CPC title
Esters of keto-carboxylic acids {or aldehydo-carboxylic acids} · CPC title
Polysiloxanes · CPC title
condensed with carbocyclic rings · CPC title
Carboxylic acid amides · CPC title
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