Patent US3679842A successfully refreshed from Google Patents.
US3671450A
Expired / Lapsed
US
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Chemiluminescent compositions
Assignee: Wyeth Holdings LLC
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Filing: 1969-09-22
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Granted: 1972-06-20
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Expires: 1989-09-22
Abstract
Abstract A novel composition and the process of producing the composition, whereby the composition is in the form of a gel having chemiluminescent properties. More particularly, the invention relates to the direct production of light from chemical energy employing any chemiluminescent compositions in the presence of a gelling agent. By ''''light'''' as referred to herein is meant electromagnetic radiation at wavelengths falling between about 350 m Mu and 1,000 m Mu .
Inventors
- 👤 Michael Mckay Rauhut
- 👤 Andrew Milo Semsel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:55
CPC Classifications
C; C09; C09K; C09K11/00; C09K11/06; C09K11/07
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
49 words
A composition according to claim 1 in which said gelling agent is selected from the group consisting of alkali metal soaps, alkaline earth metal soaps, bentonite, polyaryl ureas, silica, calcium carbonate, saccharides, indanthrene blue, natural plant hydrocolloids, starches, starch derivatives, cellulose, synthetic cellulose derivatives, polyvinyl compounds, and hevea latex.
Claim 2
Dependent Claim
53 words
A composition according to claim 2 in which said natural plant hydrocolloids are selected from the group consisting of guar, tragacanth, algin, and pectin, in which said synthetic cellulose comprises nitrocellulose, and in which said polyvinyl compounds are selected from the group consisting of polyvinyl alcohol, polyvinyl pyrrolidone, polyacrylate, and ethylene oxide polymer.
Claim 3
Dependent Claim
13 words
A composition according to claim 1 in which said gelling agent is silica.
Claim 4
Dependent Claim
13 words
A composition according to claim 1 in which said gelling agent is nitrocellulose.
Claim 5
Dependent Claim
13 words
A composition according to claim 1 in which said chemiluminescent reactant is 3-aminophthalhydrazide.
Claim 6
Dependent Claim
17 words
A composition according to claim 1 in which said chemiluminescent reactant is a derivative of oxalic acid.
Claim 7
Dependent Claim
32 words
A chemiluminescent composition according to claim 7 in which said gelling agent is silica ranging from about 1 percent to about 20 percent on the basis of total weight of said gel.
Claim 8
Dependent Claim
60 words
A process for obtaining a light-emitting gel comprising reacting together a chemiluminescent reactant, a gelling agent, a fluorescer, an oxidizing agent and an organic solvent said fluorescer being present as a moiety of said chemiluminescent reactant or as a separate organic fluorescent compound, each ingredient being present in amounts sufficient (1) to obtain chemiluminescence and (2) to obtain the gel.
Claim 9
Dependent Claim
21 words
A process according to claim 9 in which said gelling agent is nitrocellulose in amounts sufficient to form an explosive composition.
Claim 10
Dependent Claim
12 words
A chemiluminescent composition comprising luminol, a solvent, an oxidizing agent and silica.
Claim 11
Dependent Claim
23 words
A composition according to claim 1 in which said chemiluminescent reactant is an electronegatively-substituted aryl oxalic ester and containing a separate fluorescent compound.
Claim 12
Dependent Claim
13 words
A composition according to claim 12 in which said gelling agent is silica.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |