Patent US5494827A successfully refreshed from Google Patents.
US5494827A
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Method using azide catalyst for peroxyoxalate chemiluminescence reaction
Assignee: Agency for Defense Development
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Filing: 1994-06-13
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Granted: 1996-02-27
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Expires: 2014-06-13
Abstract
Abstract An azide catalyst for peroxyoxalate chemiluminescence reactions is provided, which catalyzes a reaction of an oxalic acid ester compound with a peroxide in a solvent to produce 1,4 dioxetane dione as an intermediate that is subsequently decomposed catalytically by a fluorescent agent to emit light. The catalyst improves not only luminous efficiency such as luminous time and luminous intensity but also reaction of the intermediate with a peroxide.
Inventors
- 👤 Sang K. Oh
- 👤 Seung H. Cha
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:44
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/06; C09K11/07; G; G01; G01N; G01N21/00; G01N21/75; G01N21/76; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/206664
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
51 words
A method for conducting a peroxyoxalate chemiluminescence reaction, which consists essentially of catalyzing with an azide catalyst the reaction, in a solvent, of oxalic acid ester and a peroxide in the presence of a fluorescent agent to produce an intermediate, and decomposing said intermediate with the fluorescent agent to emit light.
Claim 2
Independent Claim
51 words
A method for conducting a peroxyoxalate chemiluminescence reaction, which consists essentially of catalyzing with an azide catalyst the reaction, in a solvent, of oxalic acid ester and a peroxide in the presence of a fluorescent agent to produce an intermediate, and decomposing said intermediate with the fluorescent agent to emit light.
Claim 3
Dependent Claim
15 words
A method as claimed in claim 1, wherein said oxalic ester compound is bis-2,4,6-trichlorophenyl oxalate.
Claim 4
Dependent Claim
13 words
A method as claimed in claim 1, wherein the peroxide is hydrogen peroxide.
Claim 5
Dependent Claim
13 words
A method as claimed in claim 1, wherein the fluorescent agent is pyrene.
Claim 6
Dependent Claim
23 words
A method as claimed in claim 1, wherein the solvent is selected from the group consisting of acetonitrile, water, alcohols, and mixtures thereof.
Claim 7
Dependent Claim
44 words
A method as claimed in claim 1, wherein the azide, catalyst is selected from the group consisting of NaN 3 , KN 3 , Ca(N 3 ) 2 , butyl azide, chloroethyl azide, phenyl azide, azidocyclopentane, phenacyl azide, cyanogen azide, azidonitrobenzene, 2-azidoaniline, and β-iodoazide.
Claim 8
Dependent Claim
13 words
A method as claimed in claim 1, wherein the intermediate is 1,4-dioxetane dione.
References Cited (Backward Citations)
US4647532A
Cited
US5225584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-02-26 | 1999-08-28 | 2000-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-02-26 | 2003-08-28 | 2004-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-02-26 | 2007-08-28 | 2008-02-27 | $7700.00 | Window Closed / Lapsed |