US3928171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of stabilizing oils and products thereof
Assignee: Mobil Oil AS
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Filing: 1974-02-28
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Granted: 1975-12-23
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Expires: 1994-02-28
Abstract
Abstract A process is provided for improving the stability of a hydrocarbon mineral oil, particularly a hydrocracked stock, normally susceptible to thermal oxidation and the effects of light rays and for decreasing the tendency of the oil to form sludge material. The process involves reacting the hydrocarbon mineral oil before or after conventional treatment, such as dewaxing operations, with a stabilizing agent, such as an olefin, alcohol, ester or alkyl halide in the presence of a heterogeneous acidic catalyst which includes acid resins, clays and aluminosilicates, and which has a controlled alkylation activity. The final oil product has improved light stability over a conventionally treated oil.
Inventors
- 👤 Tsoung-Yuan Yan
- 👤 Robert F Bridger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:26
CPC Classifications
C; C10; C10G; C10G29/00; C10G29/20; B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/08; B01J31/10
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
83 words
A METHOD OF IMPROVING THE LIGHT STABILITY OF A HYDROCRACKED HYDROCARBON MINERAL OIL AND LESSENING THE FORMATION OF SLUDGE MATERIAL IN SAID OIL WHICH COMPRISES REACTING SAID OIL WITH AN OLEFIN, IN THE PRESENCE OF A CATALYST CONSISTING OF AN ACIDIC RESIN WHEREIN THE RESIN IS A POLYMERIC RESIN, SELECTED FROM THE GROUP CONSISTING OF PHENOLIC RESIN, STYRENE RESIN AND STYRENE COPOLYMER RESIN HAVING AS THE ACIDIC RADICALS ATTACHED THERETO A RADICAL SELECTED FROM THE GROUP CONSISTING OF SULFONIC-CONTAINING RADICALS AND PHOSPHONIC-CONTAINING RADICALS.
Claim 2
Independent Claim
83 words
A METHOD OF IMPROVING THE LIGHT STABILITY OF A HYDROCRACKED HYDROCARBON MINERAL OIL AND LESSENING THE FORMATION OF SLUDGE MATERIAL IN SAID OIL WHICH COMPRISES REACTING SAID OIL WITH AN OLEFIN, IN THE PRESENCE OF A CATALYST CONSISTING OF AN ACIDIC RESIN WHEREIN THE RESIN IS A POLYMERIC RESIN, SELECTED FROM THE GROUP CONSISTING OF PHENOLIC RESIN, STYRENE RESIN AND STYRENE COPOLYMER RESIN HAVING AS THE ACIDIC RADICALS ATTACHED THERETO A RADICAL SELECTED FROM THE GROUP CONSISTING OF SULFONIC-CONTAINING RADICALS AND PHOSPHONIC-CONTAINING RADICALS.
Claim 3
Dependent Claim
12 words
The method of claim 1 wherein the olefin has the bond group
Claim 4
Dependent Claim
21 words
The method of claim 2 wherein the olefin is selected from the group consisting of propene, butene, hexene, and propylene tetramer.
Claim 5
Dependent Claim
27 words
The method of claim 1 wherein the catalyst is a polymeric styrene resin having an acidic group selected from the group consisting of sulfonic-containing and phosphonic-containing radicals.
Claim 6
Dependent Claim
30 words
The method of claim 1 wherein the catalyst has a propylene-benzene alkylation activity rate of at least about 0.003 X 10 2 grams cumene per gram of catalyst per hour.
Claim 7
Dependent Claim
22 words
The method of claim 1 wherein the treatment is continuous and the liquid hourly space velocity is between about 0.1 and 10.
Claim 8
Dependent Claim
39 words
The method of claim 1 wherein the treatment is carried out on a lube oil fraction after the solvent extraction step normally employed in the refining of said oil and either before or after a conventional solvent dewaxing step.
Claim 9
Dependent Claim
49 words
The method of claim 1 wherein tHe oil has been hydrocracked and treated with an olefin in the presence of the acidic catalyst, at a temperature of 25* to 350*C., at a pressure of 0 to 500 p.s.i.g., and at a liquid hourly space velocity of 0.1 to 1.0.
Claim 10
Dependent Claim
36 words
The method of claim 1 wherein the olefin is selected from the group consisting of (1) a mixture of an olefin and the corresponding alkane and (2) an unsaturated gasoline product obtained from a cracking operation.
Claim 11
Dependent Claim
20 words
The method of claim 4 wherein the resin is a sulfonated ion-exchange resin gel of styrene crosslinked with divinyl benzene.
Claim 12
Dependent Claim
28 words
The method of claim 1 wherein the acidic radicals are selected from the group consisting of sulfonic acid, phosphonic acid, phenylphosphonic acid, phenylsulfonic acid and phenolsulfonic acid radicals.
Claim 13
Dependent Claim
10 words
The method of claim 2 wherein the olefin is hexene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-22 | 1979-06-23 | 1979-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-22 | 1983-06-23 | 1983-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-22 | 1987-06-23 | 1987-12-23 | $7700.00 | Window Closed / Lapsed |