Patent US2693485A successfully refreshed from Google Patents.
US2693485A
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Process for producing metal salts of alkylene bis-dithiocarbamic acids
Assignee: EIDP Inc
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Filing: 1952-05-22
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Granted: 1954-11-02
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Expires: 1972-05-22
Abstract
No abstract record available.
Inventors
- 👤 Richard J Gobeil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:00
CPC Classifications
C; C07; C07C; C07C333/00; C07C333/14; C07C333/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
IN A PROCESS WHEREIN A METAL SALT OF AN ALKYLENE BISDITHIOCARBAMIC ACID IS FORMED BY THE INTERACTION OF THE REAGENTS CARBON DISULFIDE, AN ALKYLENE DIAMINE, AND A METAL HYDROXIDE HAVING AN HYDROXYL ION DISSOCIATION CONSTANT GREATER THAN THAT OF TH ALKYLENE DIAMINE, THE IMPROVEMENT COMPRISING BRINGING TOGETHER SAID REAGENTS FOR REACTION BY INTRODUCING CARBON DISULFIDE AND THE METAL HYDROXIDE INTO CONTACT WITH THE ALKYLENE DIAMINE IN AN AQUEOUS MEDIUM, WHILE AGITATING THE RESULTING AQUEOUS MASS, AT SUCH RATES RELATIVE TO EACT OTHER AS TO KEEP THE PH OF THE AQUEOUS MASS WITHIN THE RANGE OF 8.5 TO 11.0 THRUOUT THE REACTION PERIOD.
Claim 2
Dependent Claim
102 words
IN A PROCESS WHEREIN A METAL SALT OF AN ALKYLENE BISDITHIOCARBAMIC ACID IS FORMED BY THE INTERACTION OF THE REAGENTS CARBON DISULFIDE, AN ALKYLENE DIAMINE, AND A METAL HYDROXIDE HAVING AN HYDROXYL ION DISSOCIATION CONSTANT GREATER THAN THAT OF TH ALKYLENE DIAMINE, THE IMPROVEMENT COMPRISING BRINGING TOGETHER SAID REAGENTS FOR REACTION BY INTRODUCING CARBON DISULFIDE AND THE METAL HYDROXIDE INTO CONTACT WITH THE ALKYLENE DIAMINE IN AN AQUEOUS MEDIUM, WHILE AGITATING THE RESULTING AQUEOUS MASS, AT SUCH RATES RELATIVE TO EACT OTHER AS TO KEEP THE PH OF THE AQUEOUS MASS WITHIN THE RANGE OF 8.5 TO 11.0 THRUOUT THE REACTION PERIOD.
References Cited (Backward Citations)
US1983240A
Cited
US2229562A
Cited
US2356764A
Cited
US2317765A
Cited
US2563007A
Cited
US2561208A
Cited
US2609389A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |