US3912639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant containing alkali metal borates and phosphates
Assignee: Chevron USA Inc
•
Filing: 1973-07-05
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Granted: 1975-10-14
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Expires: 1993-07-05
Abstract
Abstract An extreme pressure lubricating composition having excellent water tolerance properties comprises (A) an oil of lubricating viscosity, (B) an alkali metal borate, (C) a trialkali metal phosphate, and (D) a lipophilic dispersant.
Inventors
- 👤 John H Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:51
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/085; C10M2201/087; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/04; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/14; C10M2207/141; C10M2207/142; C10M2207/144; C10M2207/146; C10M2207/24; C10M2207/28; C10M2207/287; C10M2207/289; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/028; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2225/00; C10M2225/04; C10M2225/041; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2040/00; C10N2040/02; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
A LUBRICATING COMPOSITION COMPRISING (1) AN OIL OF LUBRICATING VISCOSITY, (2) AN AMOUNT EFFECTIVE TO IMPART EXTREME PRESSURE PROPERTIES TO SAID OIL OF AN ALKALI METAL BORATE AND A TRIALKALI METAL PHOSPHATE, WHEREIN SAID MIXTURE IS 99-30 MOLAR PERCENT OF SAID BORATE AND 1-70 MOLAR PERCENT OF SAID PHOSPHATE, AND (3) AN AMOUNT EFFECTIVE TO DISPERSE SAID ALKALI METAL BORATE AND SAID TRIALKALI METAL PHOSPHATE OF A MIXTURE OF DISPERSANTS, SAID MIXTURE COMPRISING 95-65 WEIGHT PERCENT OF A LIPOPHILIC ANONIC SURFACE-ACTIVE AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SULFONATES AND ALKALINE EACTH METAL SULFONATES AND 5-35 WEIGHT PERCENT OF A LIPOPHILIC NONIONIC SURFACE-ACTIVE AGENT SELECTED FROM THE GROUP CONSISTING OF N-SUBSTITUTED ALKENYL SUCCINIMIDES OF AN ALKYLENE POLYAMINE.
Claim 2
Dependent Claim
119 words
A LUBRICATING COMPOSITION COMPRISING (1) AN OIL OF LUBRICATING VISCOSITY, (2) AN AMOUNT EFFECTIVE TO IMPART EXTREME PRESSURE PROPERTIES TO SAID OIL OF AN ALKALI METAL BORATE AND A TRIALKALI METAL PHOSPHATE, WHEREIN SAID MIXTURE IS 99-30 MOLAR PERCENT OF SAID BORATE AND 1-70 MOLAR PERCENT OF SAID PHOSPHATE, AND (3) AN AMOUNT EFFECTIVE TO DISPERSE SAID ALKALI METAL BORATE AND SAID TRIALKALI METAL PHOSPHATE OF A MIXTURE OF DISPERSANTS, SAID MIXTURE COMPRISING 95-65 WEIGHT PERCENT OF A LIPOPHILIC ANONIC SURFACE-ACTIVE AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL SULFONATES AND ALKALINE EACTH METAL SULFONATES AND 5-35 WEIGHT PERCENT OF A LIPOPHILIC NONIONIC SURFACE-ACTIVE AGENT SELECTED FROM THE GROUP CONSISTING OF N-SUBSTITUTED ALKENYL SUCCINIMIDES OF AN ALKYLENE POLYAMINE.
Claim 3
Dependent Claim
34 words
The composition of claim 1 wherein said mixture of dispersants comprises 0.25 to 5 weight percent of said composition and said mixture of borate and phosphate comprises 1 to 20 percent of said composition.
Claim 4
Dependent Claim
35 words
The composition of claim 2 wherein said mixture of dispersants comprises 0.5 to 3 weight percent of said composition and said mixture of borate and phosphate comprises 3 to 7 weight percent of said comPosition.
References Cited (Backward Citations)
US2732345A
Cited
US2664399A
Cited
US2990610A
Cited
US3125519A
Cited
US2987476A
Cited
US2964475A
Cited
US3186945A
Cited
US3313727A
Cited
US3313728A
Cited
US3313729A
Cited
US3565802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-13 | 1979-04-14 | 1979-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-13 | 1983-04-14 | 1983-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-13 | 1987-04-14 | 1987-10-14 | $7700.00 | Window Closed / Lapsed |