EP0396376A1
Expired / Lapsed
EP
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Polymerizable dye
Assignee: Bausch and Lomb Inc
•
Filing: 1990-04-30
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Granted: —
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Expires: 2010-04-30
Abstract
Abstract Dye monomers of the general chemical formula where X denotes an unsaturated polymerizable organic radical; and R is an organic diradical with 2 to 12 carbon atoms.
Inventors
- 👤 John B. Melpolder
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 23:39
CPC Classifications
C; C09; C09B; C09B69/00; C09B69/10; G; G02; G02B; G02B1/00; G02B1/04; G02B1/041; G02B1/043; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B69/101
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
27 words
A compound having the general chemical formula: wherein: R denotes a divalent radical with 1 to 12 carbon atoms; and X denotes a polymerizable unsaturated organic radical.
Claim 2
Dependent Claim
27 words
A compound having the general chemical formula: wherein: R denotes a divalent radical with 1 to 12 carbon atoms; and X denotes a polymerizable unsaturated organic radical.
Claim 3
Dependent Claim
21 words
A compound of Claim 1 wherein X is -Y-CO-C(Z)=CH₂ wherein Y is -O- or -NH- and Z is hydrogen or methyl.
Claim 4
Dependent Claim
15 words
A compound of Claim 1 or Claim 2 wherein R is a divalent phenylalkyl radical.
Claim 5
Dependent Claim
3 words
The compound 1,4-bis(4-(2-methacryloxyethyl)phenylamino)anthraquinone.
Claim 6
Dependent Claim
3 words
The compound 1,4-bis(4-(2-methacryloxyethyl)phenylamino)anthraquinone.
Claim 7
Dependent Claim
22 words
A hydrogel article formed by polymerizing a precopolymer mixture comprising a hydrophilic monomer and a compound as defined in any preceding claim.
Claim 8
Dependent Claim
12 words
An article as in Claim 5 wherein the precopolymer mixture contains 2-hydroxyethylmethacrylate.
Claim 9
Dependent Claim
13 words
An article as in Claim 5 wherein the precopolymer mixture contains N-vinyl pyrrolidone.
Claim 10
Dependent Claim
16 words
A hydrogel article as in any one of Claims 5-7 which is a soft contact lens.
References Cited (Backward Citations)
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