Patent US3985642A successfully refreshed from Google Patents.
US3985642A
Expired / Lapsed
US
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Process of reclaiming lube oils
Assignee: Baker Petrolite LLC
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Filing: 1975-04-28
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Granted: 1976-10-12
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Expires: 1995-04-28
Abstract
Abstract This invention relates to a process of reclaiming lube oil which comprises treating spent lube oil with a surfactant, preferably an anionic surfactant, in combination with an amine, preferably a polyalkylene polyamine, and recovering the reclaimed oil.
Inventors
- 👤 John P. Friel
- 👤 Paul L. Hammond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:37
CPC Classifications
C; C10; C10M; C10M175/00; C10M175/0016
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
39 words
A process of reclaiming spent lube oil which comprises treating said spent lube oil with a composition consisting essentially of a surfactant and a polyalkylene polyamine at an elevated temperature, separating the settled impurities and recovering the reclaimed oil.
Claim 2
Dependent Claim
10 words
The process of claim 1 where the surfactant is anionic.
Claim 3
Dependent Claim
16 words
The process of claim 2 where the anionic surfactant contains a sulfate or a sulfonate radical.
Claim 4
Dependent Claim
15 words
The process of claim 3 where the polyalkylene polyamine is predominantly of the formula ##STR10##
Claim 5
Dependent Claim
12 words
The process of claim 4 where the surfactant is an alkylarylsulfonic acid.
Claim 6
Dependent Claim
12 words
The process of claim 5 where the alkylarylsulfonic acid is ammonium dodecylbenzenesulfonate.
Claim 7
Dependent Claim
50 words
The process of claim 1 wherein said elevated temperature is 50° to 200° C., the weight ratio of surfactant to polyalkylene polyamine is between 95 to 5 and 5 to 95 and the amount of treating composition employed is from about 0.02% to 5.0% by weight of the oil treated.
Claim 8
Dependent Claim
10 words
The process of claim 6 where said composition contains water.
Claim 9
Dependent Claim
12 words
The process of claim 8 where the polyalkylene polyamine is predominantly ##STR11##
Claim 10
Dependent Claim
12 words
The process of claim 8 where the polyalkylene polyamine is predominantly ##STR12##
References Cited (Backward Citations)
US3282827A
Cited
US3305478A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |