US3888786A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorinated bis(phenylethynyl)anthracenes as fluorescers in chemiluminescent systems
Assignee: Wyeth Holdings LLC
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Filing: 1973-11-23
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Granted: 1975-06-10
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Expires: 1993-11-23
Abstract
Abstract This invention relates to a chemiluminescent system to obtain chemiluminescent light by reacting an oxalic-type compound of the group consisting of an oxalic-type ester with a hydroperoxide compound in the presence of a solvent and chloro, fluoro, or lower alkyl bis phenylethynyl-substituted aromatic compound as a fluorescer.
Inventors
- 👤 Donald Roy Maulding
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:01
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/06; C09K11/07; C07; C07C; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
21 words
A CHEMILUMINESCENT COMPOSITION FOR REACTION WITH A HYDROPEROXIDE TO OBTAIN CHEMILUMINESCENT LIGHT, SAID COMPOSITION COMPRISING (1) AN ESTER OF THE FORMULA:
Claim 2
Dependent Claim
21 words
A CHEMILUMINESCENT COMPOSITION FOR REACTION WITH A HYDROPEROXIDE TO OBTAIN CHEMILUMINESCENT LIGHT, SAID COMPOSITION COMPRISING (1) AN ESTER OF THE FORMULA:
Claim 3
Dependent Claim
17 words
A composition according to claim 1, in which said chemiluminescent compound is a bis-ester of oxalic acid.
Claim 4
Dependent Claim
35 words
A composition according to claim 2 in which said ester comprises an ester formed from oxalic acid and a phenol, said phenol characterized by an ionization constant in water greater than 1.3 X 10 10.
Claim 5
Dependent Claim
12 words
A composition according to claim 3 in which said bis(substituted-phenyl)oxalate comprises bis(2,4,5-trichloro-6-carbopentoxyphenyl)oxalate.
Claim 6
Dependent Claim
15 words
A composition according to claim 2 wherein said bis-phenyl ester is substituted with carbalkoxy groups.
Claim 7
Dependent Claim
18 words
A composition according to claim 2 wherein said fluorescer is a monochloro or a dichloro derivative of 9,10-bis-(phenylethynyl)anthracene.
Claim 8
Dependent Claim
20 words
A composition according to claim 6 wherein said fluorescer is selected from the group consisting of 1,5-dichloro-9,10-bis(phenylethynyl)anthracene; 1,8-dichloro-9,10-bis(phenylethynyl)anthracene; and 2,3-dichloro-9,10-bis(phenylethynyl)anthracene.
Claim 9
Dependent Claim
11 words
A composition according to claIm 2 wherein said fluorescer is 2-methyl-9,10-bis(phenylethynyl)anthracene.
Claim 10
Dependent Claim
11 words
A composition according to claim 3 wherein said fluorescer is 1-chloro-9,10-bis(phenylethynyl)anthracene.
Claim 11
Dependent Claim
11 words
A composition according to claim 3 wherein said fluorescer is 2-chloro-9,10-bis(phenylethynyl)anthracene.
References Cited (Backward Citations)
US3399137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |