Patent US2760957A successfully refreshed from Google Patents.
US2760957A
Expired / Lapsed
US
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Phosphorus and/or sulfur-containing reaction products of carbonyl compounds and polyamines
Assignee: Shell Development Co
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Filing: 1953-06-01
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Granted: 1956-08-28
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Expires: 1973-06-01
Abstract
No abstract record available.
Inventors
- 👤 David E Adelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:30
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F9/00; C07F9/02; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L1/2493; C10L1/26; C10L1/2691; C10M2203/00; C10M2203/06; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2221/00; C10M2221/04; C10M2223/00; C10M2223/08; C10M2223/12; C10M2225/00; C10M2225/02; C10N; C10N2040/00; C10N2040/135
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A REACTION PRODUCT OBTAINED BY FIRST REACTING AN ORGANIC CARBONYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED KETONES AND UNSUBSTITUTED ALDEHYDES WITH AN ALKYLENE POLYAMINE IN THE MOLE RATIO OF 2 TO 6:1 TO 3, RESPECTIVELY, AT A TEMPERATURE OF FROM 50* TO 250* C. UNTIL WATER FORMATION CEASES AND TREATING THE RESULTING PRODUCT WITH AN INORGANIC CARBON-FREE SULFUR COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS SULFIDE, SULFUR HALIDE AND SULFUR IN THE MOLE RATIO OF FROM 1:1 TO 1:8, RESPECTIVELY, AT A TEMPERATURE RANGING FROM BELOW ZERO DEGREE TO ABOUT 175* C. AND FOR A PERIOD OF FROM 3 TO 24 HOURS.
Claim 2
Dependent Claim
105 words
A REACTION PRODUCT OBTAINED BY FIRST REACTING AN ORGANIC CARBONYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF UNSUBSTITUTED KETONES AND UNSUBSTITUTED ALDEHYDES WITH AN ALKYLENE POLYAMINE IN THE MOLE RATIO OF 2 TO 6:1 TO 3, RESPECTIVELY, AT A TEMPERATURE OF FROM 50* TO 250* C. UNTIL WATER FORMATION CEASES AND TREATING THE RESULTING PRODUCT WITH AN INORGANIC CARBON-FREE SULFUR COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHOSPHORUS SULFIDE, SULFUR HALIDE AND SULFUR IN THE MOLE RATIO OF FROM 1:1 TO 1:8, RESPECTIVELY, AT A TEMPERATURE RANGING FROM BELOW ZERO DEGREE TO ABOUT 175* C. AND FOR A PERIOD OF FROM 3 TO 24 HOURS.
References Cited (Backward Citations)
US2516119A
Cited
US2652367A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |