Patent FR1480045A successfully refreshed from Google Patents.
Patent US3281359A successfully refreshed from Google Patents.
US3281359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Neopentyl polyol derivatives and lubricating compositions
Assignee: Texaco Inc
•
Filing: 1964-08-27
•
Granted: 1966-10-25
•
Expires: 1984-08-27
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Oberender
- 👤 David D Reed
- 👤 James M Petersen
- 👤 Hazel E Kluge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:18
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/123; C10M159/126; C07; C07F; C07F9/00; C07F9/02; C07F9/04; C10M2207/00; C10M2207/02; C10M2207/023; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2219/00; C10M2219/04; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/12; C10M2223/121; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
125 words
A METHOD OF PREPARING A DETERGENT-DISPERSANT POLYOL DERIVATIVE COMPRISING: (A) CONTACTING AN ALIPHATIC POLYOLEFIN OF AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 250 AND 50,000 WITH P2S5 IN THE PRESENCE OF BETWEEN ABOUT 0.1 AND 5 WT. PERCENT SULFUR AT A TEMPERATURE OF BETWEEN ABOUT 100 AND 320* C., P2S5 COMPRISING BETWEEN ABOUT 5 AND 40 WT. PERCENT OF THE REACTION MIXTURE, (B) CONTACTING THE RESULTANT POLYOLEFFIN-P2S5 REACTION PRODUCT WITH STEAM AT A TEMPERATURE BETWEEN ABOUT 100 AND 260*C. UTILIZING AT LEAST ABOUT A MOLE RATIO EXCESS OF STEAM IN RESPECT TO SAID POLYOLEFIN-P2S5 REACTION PRODUCT, (C) REMOVING INORGANIC PHOSPHORUS ACID FROM THE STEAM TREATED POLYOLEFIN-P2S5 REACTION PRODUCT, (D) CONTACTING THE INORGANIC ACID FREE, STEAM HYDROLYZED POLYOLEFIN-P2S5 REACTION PRODUCT WITH A NEOPENTYL POLYOL OF THE FORMULA:
Claim 2
Independent Claim
125 words
A METHOD OF PREPARING A DETERGENT-DISPERSANT POLYOL DERIVATIVE COMPRISING: (A) CONTACTING AN ALIPHATIC POLYOLEFIN OF AN AVERAGE MOLECULAR WEIGHT BETWEEN ABOUT 250 AND 50,000 WITH P2S5 IN THE PRESENCE OF BETWEEN ABOUT 0.1 AND 5 WT. PERCENT SULFUR AT A TEMPERATURE OF BETWEEN ABOUT 100 AND 320* C., P2S5 COMPRISING BETWEEN ABOUT 5 AND 40 WT. PERCENT OF THE REACTION MIXTURE, (B) CONTACTING THE RESULTANT POLYOLEFFIN-P2S5 REACTION PRODUCT WITH STEAM AT A TEMPERATURE BETWEEN ABOUT 100 AND 260*C. UTILIZING AT LEAST ABOUT A MOLE RATIO EXCESS OF STEAM IN RESPECT TO SAID POLYOLEFIN-P2S5 REACTION PRODUCT, (C) REMOVING INORGANIC PHOSPHORUS ACID FROM THE STEAM TREATED POLYOLEFIN-P2S5 REACTION PRODUCT, (D) CONTACTING THE INORGANIC ACID FREE, STEAM HYDROLYZED POLYOLEFIN-P2S5 REACTION PRODUCT WITH A NEOPENTYL POLYOL OF THE FORMULA:
Claim 3
Dependent Claim
47 words
A LUBRICATING OIL COMPOSITION COMPRISING A MAJOR AMOUNT OF LUBRICANT OIL AND AN EFFECTIVE DETERGENT-DISPERSAN AMOUNT OF A POLYOL DERIVATIVE PREPATED IN ACCORDANCE WITH CLAIM 1, SAID LUBRICATING OIL SELECTED FROM THE GROUP CONSISTING OF MINERAL LUBRICATING OIL, SYNTHETIC ESTER LUBRICATING OIL AND SYNTHETIC ETHER LUBRICATING OIL.
References Cited (Backward Citations)
US2767163A
Cited
GB838928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |