US3720622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Generation of light from the decomposition of dioxetaneones in the presence of a fluorescer
Assignee: Wyeth Holdings LLC
•
Filing: 1970-01-02
•
Granted: 1973-03-13
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Expires: 1990-01-02
Abstract
Abstract A bright chemiluminescent light emission is obtained when ketene or substituted ketenes such as diphenylketene are reacted with singlet oxygen or a precursor thereof such as triphenylphosphiteozone complex in the presence of a fluorescer.
Inventors
- 👤 L Bollyky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:18
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/06; C09K11/07
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
94 words
A chemiluminescent light composition adapted to be reacted with singlet oxygen or a precursor thereof to produce chemiluminescent light, containing the reactants (1) A) a ketene of the general formula where X equals hydrogen, alkyl, haloalkyl, aryl, halide and acyl, or B) a ketene precursor that is capable of producing a ketene or a ketene acetal; (2) an organic fluorescent compound, and (3) an organic solvent for said reactants, said solvent being inert to said ketene or ketene precursor, said reactants being present in such ratios as to obtain visible chemiluminescent light upon reaction.
Claim 2
Dependent Claim
94 words
A chemiluminescent light composition adapted to be reacted with singlet oxygen or a precursor thereof to produce chemiluminescent light, containing the reactants (1) A) a ketene of the general formula where X equals hydrogen, alkyl, haloalkyl, aryl, halide and acyl, or B) a ketene precursor that is capable of producing a ketene or a ketene acetal; (2) an organic fluorescent compound, and (3) an organic solvent for said reactants, said solvent being inert to said ketene or ketene precursor, said reactants being present in such ratios as to obtain visible chemiluminescent light upon reaction.
Claim 3
Dependent Claim
20 words
A composition of claim 1 where the ketene is selected from the group consisting of unsubstituted ketene, diphenylketene, and bis(trifluoromethyl)ketene.
Claim 4
Dependent Claim
13 words
A composition of claim 1 where the ketene precursor is dimethylketene dimethylmaleic acylal
Claim 5
Dependent Claim
14 words
A composition of claim 1 where the singlet oxygen precursor is a triphenylphosphite-ozone complex.
Claim 6
Dependent Claim
24 words
A composition of claim 1 where the singlet oxygen precursor is selected from the group consisting of rubrene endoperoxide, 1, 4-dimethoxy 9,10-diphenylanthracene and endoperoxide.
Claim 7
Dependent Claim
42 words
A process for producing visible light which is, reacting the reactants, a ketene precursor, a singlet oxygen precursor and an organic fluorescent compound in an organic solvent for said reactants, said reactants being present in such ratios as to produce visible light.
Claim 8
Dependent Claim
42 words
A process for producing visible light which is, reacting the reactants, a ketene precursor, a singlet oxygen precursor and an organic fluorescent compound in an organic solvent for said reactants, said reactants being present in such ratios as to produce visible light.
References Cited (Backward Citations)
US2627477A
Cited
US2608520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |