Patent US2694738A successfully refreshed from Google Patents.
US2694738A
Expired / Lapsed
US
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Process for stabilization of nuclear halogenated aromatic hydrocarbons
Assignee: Occidental Chemical Corp
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Filing: 1951-11-13
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Granted: 1954-11-16
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Expires: 1971-11-13
Abstract
No abstract record available.
Inventors
- 👤 John T Rucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:54
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/38; C07C17/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
IN A METHOD FOR MAKING NUCLEAR CHLORINATED AROMATIC MATERIALS SELECTED FROM THE GROUP CONSISTING OF POLYCHLOROBENZENES, POLYCHLORODIPHENYLS, CHLORINATED DIPHENYL OXIDE, CHLORINATED DIPHENYL METHANE, ALKYL CHLORINATED BENZENES HAVING LESS THAN SEVEN CARBON ATOMS IN THE HYDROCARBON SIDE CHAIN, CHLORINATED NAPHTHALENES AND MIXTURES THEREOF, STABLE FOR USE AS A DIELECTRIC, THE STEP COMPRISING: HEATING THE MATERIAL TO BE STABILIZED WITH BETWEEN 0.1 AND 20 PER CENT BY WEIGHT OF AN ALKALI IN THE PRESENCE OF BETWEEN 0.01 AND 5 PER CENT BY WEIGHT OF AN ALIPHATIC POLYHYDRIC ALCOHOL AT A TEMPERATURE ABOVE ABOVE 140 DEGREES CENTIGRADE FOR A TIME SUFFICIENT TO RENDER THE MATERIAL STABLE AND SEPARATING THE NUCLEAR CHLORINATED AROMATIC MATERIAL THEREFROM.
Claim 2
Dependent Claim
111 words
IN A METHOD FOR MAKING NUCLEAR CHLORINATED AROMATIC MATERIALS SELECTED FROM THE GROUP CONSISTING OF POLYCHLOROBENZENES, POLYCHLORODIPHENYLS, CHLORINATED DIPHENYL OXIDE, CHLORINATED DIPHENYL METHANE, ALKYL CHLORINATED BENZENES HAVING LESS THAN SEVEN CARBON ATOMS IN THE HYDROCARBON SIDE CHAIN, CHLORINATED NAPHTHALENES AND MIXTURES THEREOF, STABLE FOR USE AS A DIELECTRIC, THE STEP COMPRISING: HEATING THE MATERIAL TO BE STABILIZED WITH BETWEEN 0.1 AND 20 PER CENT BY WEIGHT OF AN ALKALI IN THE PRESENCE OF BETWEEN 0.01 AND 5 PER CENT BY WEIGHT OF AN ALIPHATIC POLYHYDRIC ALCOHOL AT A TEMPERATURE ABOVE ABOVE 140 DEGREES CENTIGRADE FOR A TIME SUFFICIENT TO RENDER THE MATERIAL STABLE AND SEPARATING THE NUCLEAR CHLORINATED AROMATIC MATERIAL THEREFROM.
References Cited (Backward Citations)
US1953070A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-15 | 1958-05-17 | 1958-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-15 | 1962-05-17 | 1962-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-15 | 1966-05-17 | 1966-11-16 | $7700.00 | Window Closed / Lapsed |