US4713198A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature plastic scintillators
Assignee: Atos Origin IT Services Inc
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Filing: 1985-04-11
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Granted: 1987-12-15
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Expires: 2005-04-11
Abstract
Abstract A plastic scintillator comprises a polymethylpentene thermoplastic material containing a fluorescent additive. This plastic scintillator material functions at high temperatures with excellent optical properties in the detection of neutrons. The plastic scintillator may also include an energy transfer compound, a wavelength shifter, a solubility enhancer for the polymethylpentene and a decolorizing agent.
Inventors
- 👤 John J. Simonetti
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:47
CPC Classifications
G; G01; G01T; G01T1/00; G01T1/16; G01T1/20; G01T1/203
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
76 words
As an article of manufacture, a plastic scintillator which will function at high temperatures and retain as optical properties, said scintillator comprising a polymethylpentene host plastic containing a fluorescent agent, an energy transfer compound to cause energy from the fluorescent agent to be re-radiated at a lower wavelength, a wavelength shifter to absorb energy from the energy transfer agent and re-radiate it at a higher wavelength, a solubility enhancer for the polymethylpentene, and a decolorizing agent.
Claim 2
Dependent Claim
76 words
As an article of manufacture, a plastic scintillator which will function at high temperatures and retain as optical properties, said scintillator comprising a polymethylpentene host plastic containing a fluorescent agent, an energy transfer compound to cause energy from the fluorescent agent to be re-radiated at a lower wavelength, a wavelength shifter to absorb energy from the energy transfer agent and re-radiate it at a higher wavelength, a solubility enhancer for the polymethylpentene, and a decolorizing agent.
Claim 3
Dependent Claim
26 words
An article of manufacture according to claim 1 wherein the energy transfer compound comprises an oxazole, an oxidiazole, a styryl or stilbene derivative or mixtures thereof.
Claim 4
Dependent Claim
23 words
An article according to claim 1 wherein the wavelength shifter comprises an oxazole, an oxadiazole, a styryl or stilbene derivative or mixtures thereof.
Claim 5
Dependent Claim
22 words
An article according to claim 1 wherein the solubility enhancer is selected from the group consisting of dodecyl benzene and dodecyl alcohol.
Claim 6
Dependent Claim
17 words
An article according to claim 1 wherein the decolorizing agent comprises sodium borohydride saturated in dodecyl alcohol.
Claim 7
Dependent Claim
54 words
As an article of manufacture, a plastic scintillator which will function at high temperatures and retain its optical properties, said scintillator comprising a polymethylpentene host plastic containing an aromatic hydrocarbon fluorescent agent selected from the group consisting of p-terphenyl and mixtures of p-terphenyl with a compound selected from napthalene, napthalene derivatives and mixtures thereof.
Claim 8
Dependent Claim
54 words
As an article of manufacture, a plastic scintillator which will function at high temperatures and retain its optical properties, said scintillator comprising a polymethylpentene host plastic containing an aromatic hydrocarbon fluorescent agent selected from the group consisting of p-terphenyl and mixtures of p-terphenyl with a compound selected from napthalene, napthalene derivatives and mixtures thereof.
Claim 9
Dependent Claim
35 words
As an article of manufacture, a plastic scintillator which will function at high temperatures and retain its optical properties, said scintillator comprising a polymethylpentene host plastic, an aromatic hydrocarbon fluorescent agent and a solubility enhancer.
Claim 10
Dependent Claim
35 words
As an article of manufacture, a plastic scintillator which will function at high temperatures and retain its optical properties, said scintillator comprising a polymethylpentene host plastic, an aromatic hydrocarbon fluorescent agent and a solubility enhancer.
Claim 11
Dependent Claim
38 words
As an article of manufacture, a plastic scintillator which will function at high temperatures and retain its optical properties, said scintillator comprising a polymethylpentene host plastic, an aromatic hydrocarbon fluorescent agent, a solubility enhancer and a decolorizing agent.
Claim 12
Dependent Claim
38 words
As an article of manufacture, a plastic scintillator which will function at high temperatures and retain its optical properties, said scintillator comprising a polymethylpentene host plastic, an aromatic hydrocarbon fluorescent agent, a solubility enhancer and a decolorizing agent.
Claim 13
Dependent Claim
14 words
An article according to claim 8 wherein the scintillator also includes a wavelength shifter.
Claim 14
Dependent Claim
15 words
An article according to claim 8 wherein the scintillator also includes an energy transfer compound.
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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) | 1990-12-14 | 1991-06-15 | 1991-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-14 | 1995-06-15 | 1995-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-14 | 1999-06-15 | 1999-12-15 | $7700.00 | Window Closed / Lapsed |