US4351642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elements sensitive to certain polluting agents, particularly hydrocarbons and method of use
Assignee: IFP Energies nouvelles
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Filing: 1980-04-28
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Granted: 1982-09-28
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Expires: 2000-04-28
Abstract
Abstract A sensitive element which deteriorates when contacted with the polluting agent, this material comprising a sequenced styrene-butadiene copolymer, of which at least a part is hydrogenated. These elements can be used in pollution sensing devices, or for constituting at least a wall portion of a container housing a product for fighting against pollution.
Inventors
- 👤 Gerard Bonavent
- 👤 Lucien Montabord
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:53
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/042; G01M3/045; G01N; G01N33/00; G01N33/18; G01N33/1826; G01N33/1833; Y; Y02; Y02W; Y02W10/00; Y02W10/30; Y02W10/37; Y10; Y10S; Y10S210/00; Y10S210/918; Y10S210/922; Y10S210/924; Y10T; Y10T436/00; Y10T436/19; Y10T436/20; Y10T436/200833; Y10T436/21
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
60 words
A sensitive element comprising (a) a component made of a material which is resistant to sunlight but which deteriorates upon contact with an organic pollutant, and (b) means for generating a countermeasure, said means cooperating with said component and being actuated upon deterioration thereof; wherein said material comprises a sequenced styrene-butadiene copolymer of which at least a part is dehydrogenated.
Claim 2
Dependent Claim
60 words
A sensitive element comprising (a) a component made of a material which is resistant to sunlight but which deteriorates upon contact with an organic pollutant, and (b) means for generating a countermeasure, said means cooperating with said component and being actuated upon deterioration thereof; wherein said material comprises a sequenced styrene-butadiene copolymer of which at least a part is dehydrogenated.
Claim 3
Dependent Claim
13 words
A sensitive element according to claim 1, wherein said material contains 400K oil.
Claim 4
Dependent Claim
18 words
A sensitive element according to claim 1, wherein said material includes stabilizing agents with respect to ultra-violet rays.
Claim 5
Dependent Claim
12 words
A sensitive element according to claim 1, wherein said material includes anti-oxidants.
Claim 6
Dependent Claim
13 words
A sensitive element according to claim 1, wherein said countermeasure comprises a signal.
Claim 7
Dependent Claim
16 words
A sensitive element according to claim 1, wherein said component is a film 50-200 microns thick.
Claim 8
Dependent Claim
29 words
A method for detecting an organic pollutant, comprising placing a sensitive element according to claim 1 in a location where the presence of said pollutant is to be detected.
Claim 9
Dependent Claim
33 words
A sensitive element according to claim 1, wherein said component constitutes at least one wall portion of a container housing an anti-pollution product; and wherein said countermeasure comprises the release of said product.
Claim 10
Dependent Claim
33 words
A method of treating organic pollutants, comprising placing a sensitive element according to claim 8 in a location where an organic pollutant is present to contact said component thereby releasing said anti-pollution product.
Claim 11
Dependent Claim
14 words
A method according to claim 7 or 9, wherein said pollutant is a hydrocarbon.
Claim 12
Dependent Claim
18 words
A sensitive element according to claim 1, wherein a part but not all of said copolymer is hydrogenated.
Claim 13
Dependent Claim
25 words
A sensitive element according to claim 11, wherein said copolymer comprises about 86% by weight of hydrogenated styrene-butadiene copolymer and about 14% non-hydrogenated styrene-butadiene copolymer.
Claim 14
Dependent Claim
22 words
A sensitive element according to claim 12, wherein the copolymer further contains 400K oil, carbon black, an anti-oxidant and an ultra-violet stabilizer.
Claim 15
Dependent Claim
73 words
A component suitable for use in a sensitive element comprising (a) a component which deteriorates upon contact with an organic pollutant, and (b) means for generating a countermeasure, said means cooperating with said component and being actuated upon deterioration thereof; said component being a film 40-200 microns thick and made of a material which is resistant to sunlight and which comprises a sequenced styrene-butadiene copolymer of which at least a part is hydrogenated.
Claim 16
Dependent Claim
73 words
A component suitable for use in a sensitive element comprising (a) a component which deteriorates upon contact with an organic pollutant, and (b) means for generating a countermeasure, said means cooperating with said component and being actuated upon deterioration thereof; said component being a film 40-200 microns thick and made of a material which is resistant to sunlight and which comprises a sequenced styrene-butadiene copolymer of which at least a part is hydrogenated.
Claim 17
Dependent Claim
14 words
A component according to claim 14, wherein said film is about 100 microns thick.
Claim 18
Dependent Claim
20 words
A component according to claim 14, in the form of a wall portion for a container housing an anti-pollution product.
Claim 19
Dependent Claim
15 words
A component according to claim 14, wherein said copolymer is partly but not completely hydrogenated.
Claim 20
Dependent Claim
24 words
A component according to claim 17, wherein said copolymer comprises about 86% by weight of hydrogenated styrene-butadiene copolymer and about 14% non-hydrogenated styrene-butadiene copolymer.
Claim 21
Dependent Claim
21 words
A component according to claim 18, wherein the copolymer further contains 400K oil, carbon black, an anti-oxidant and an ultra-violet stabilizer.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |