US2563007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of alkali metal salts of n-substituted dithiocarbamic acids
Assignee: Phillips Petroleum Co
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Filing: 1947-08-25
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Granted: 1951-08-07
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Expires: 1967-08-25
Abstract
No abstract record available.
Inventors
- 👤 Willie W Crouch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:30
CPC Classifications
C; C07; C07C; C07C333/00; C07C333/14; C07C333/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
163 words
A METHOD FOR PRODUCING AN ALKALI METAL SALT OF AN N-SUBSTITUTED DITHIOCARBAMIC ACID WHICH COMPRISES CONTACTING AN AMINE SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY ALKYL, CYCLOAKLYL, AND HETEROCYCLIC AMINES WITH CARBON DISULFIDE IN THE PRESENCE OF A 10 TO 40 WEIGHT PER CENT AQUEOUS SOLUTION OF AN ALKALI METAL HYDROXIDE WHILE BOTH SAID AMINE AND SAID CARBON DISULFIDE ARE IN SOLUTION IN A NEUTRAL ORGANIC SOLVENT WHICH IS CHEMICALLY INACTIVE WITH RESPECT TO THE REACTANTS AND THE PRODUCT, WHICH HAS A SOLUBILITY FOR AT LEAST 0.5 PER CENT WATER, AND IN WHICH THE PRODUCT ALKALI METAL SALT OF THE N-SUBSTITUTED DITHIOCARBAMIC ACID IS SUBSTANTIALLY INSOLUBLE AND THEREBY EFFECTING FORMATION AND PRECIPITATION OF SAID ALKALI METAL SALT OF THE N-SUBSTITUTED DITHIOCARBAMIC ACID, UTILIZING DURING THE COURSE OF THE REACTION 4 TO 8 PARTS BY WEIGHT OF SOLVENT PER PART OF COMBINED AMINE AND CARBON DISULFIDE AND K ABOUT ONE MOL OF ALKALI METLA HYKDROXIDE PER MOL OF AMINE. MOL OF AMINE.
Claim 2
Independent Claim
163 words
A METHOD FOR PRODUCING AN ALKALI METAL SALT OF AN N-SUBSTITUTED DITHIOCARBAMIC ACID WHICH COMPRISES CONTACTING AN AMINE SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY ALKYL, CYCLOAKLYL, AND HETEROCYCLIC AMINES WITH CARBON DISULFIDE IN THE PRESENCE OF A 10 TO 40 WEIGHT PER CENT AQUEOUS SOLUTION OF AN ALKALI METAL HYDROXIDE WHILE BOTH SAID AMINE AND SAID CARBON DISULFIDE ARE IN SOLUTION IN A NEUTRAL ORGANIC SOLVENT WHICH IS CHEMICALLY INACTIVE WITH RESPECT TO THE REACTANTS AND THE PRODUCT, WHICH HAS A SOLUBILITY FOR AT LEAST 0.5 PER CENT WATER, AND IN WHICH THE PRODUCT ALKALI METAL SALT OF THE N-SUBSTITUTED DITHIOCARBAMIC ACID IS SUBSTANTIALLY INSOLUBLE AND THEREBY EFFECTING FORMATION AND PRECIPITATION OF SAID ALKALI METAL SALT OF THE N-SUBSTITUTED DITHIOCARBAMIC ACID, UTILIZING DURING THE COURSE OF THE REACTION 4 TO 8 PARTS BY WEIGHT OF SOLVENT PER PART OF COMBINED AMINE AND CARBON DISULFIDE AND K ABOUT ONE MOL OF ALKALI METLA HYKDROXIDE PER MOL OF AMINE. MOL OF AMINE.
References Cited (Backward Citations)
US2265851A
Cited
US2400934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |