USRE30529E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of naphthenic type lubricating oils
Assignee: Sunoco Inc R&M
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Filing: 1979-09-24
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Granted: 1981-02-24
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Expires: 1999-09-24
Abstract
Abstract A process for making naphthenic type lubricating oils from a low VI waxy crude which comprises distilling said low VI waxy crude to 500° to 650° F. at atmospheric pressure to separate distillable fractions therefrom, subjecting the residue to a vacuum distillation at about 25 to about 125 mm Hg absolute pressure to obtain one or more gas oil fractions, optionally hydrotreating said gas oil fractions in the presence of a Ni/Mo catalyst at 550° to 650° F., 0.25 to 1.0 LHSV, and 700-1500 psig, and catalytically dewaxing said distillates in the presence of a H + form mordenite catalyst containing a Group VI or Group VIII metal at 550° to 750° F., 500 to 1500 psig and 0.25 to 5.0 LHSV, to obtain said naphthenic type oils having pour points of from about -60° to +20° F.
Inventors
- 👤 Ronald W. Reynolds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:43
CPC Classifications
B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/18; B01J29/26; B01J29/20; C; C10; C10G; C10G2400/00; C10G2400/10
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
138 words
A process for making naphthenic type lubricating oils from a low VI waxy crude .Iadd.unsuitable for solvent lubes .Iaddend.which consists of distilling said low VI waxy crude to 500° to 650° F. at atmospheric pressure to separate distillable fractions therefrom, subjecting .Iadd.all of .Iaddend.the residue to a vacuum distillation at about 25 to about 125 mm Hg absolute pressure to obtain one or more distillate fractions having an SUS at 100° F. viscosity of from about 60 to about 2000, and catalytically dewaxing .[.all of.]. said .[.distillates.]. .Iadd.distillate fractions .Iaddend.in the presence of an H + form mordenite catalyst containing a Group VI or Group VIII metal at 550° to 750° F., 500 to 1500 psig and 0.25 to 5.0 LHSV to obtain said naphthenic type oils having a pour point of from about -50° to +20° F.
Claim 2
Dependent Claim
138 words
A process for making naphthenic type lubricating oils from a low VI waxy crude .Iadd.unsuitable for solvent lubes .Iaddend.which consists of distilling said low VI waxy crude to 500° to 650° F. at atmospheric pressure to separate distillable fractions therefrom, subjecting .Iadd.all of .Iaddend.the residue to a vacuum distillation at about 25 to about 125 mm Hg absolute pressure to obtain one or more distillate fractions having an SUS at 100° F. viscosity of from about 60 to about 2000, and catalytically dewaxing .[.all of.]. said .[.distillates.]. .Iadd.distillate fractions .Iaddend.in the presence of an H + form mordenite catalyst containing a Group VI or Group VIII metal at 550° to 750° F., 500 to 1500 psig and 0.25 to 5.0 LHSV to obtain said naphthenic type oils having a pour point of from about -50° to +20° F.
Claim 3
Dependent Claim
14 words
The process of claim 1 where the low VI waxy crude is Nigerian Medium.
Claim 4
Dependent Claim
18 words
The process of claim 1 where catalytic dewaxing is carried out in a fixed bed, trickle flow reactor.
Claim 5
Dependent Claim
15 words
The process of claim 1 where sulfur is added to the H + mordenite catalyst.
Claim 6
Dependent Claim
162 words
A process for making naphthenic type lubricating oils .[.fom.]. .Iadd.from .Iaddend.a VI waxy crude which consists of atmospherically distilling said crude to remove wet gas, straight run gasoline, naphtha and atmospheric gas oil fractions, subjecting the residue to a vacuum distillation at about 25 to 120 mm mercury pressure absolute to obtain gas oil fractions having an SUS at 100° F. viscosity of from about 60 to about 2000, hydrotreating said gas oil fractions in the presence of a Ni/Mo catalyst at about 650° F., a hydrogen pressure of about 800 psig and a LHSV of about 1.0, and catalytically dewaxing said hydrotreated gas oil fractions in the presence of an H + form mordenite catalyst containing platinum at a temperature of about 550° to about 600° F., a hydrogen pressure of about 850 psig, and a LHSV of from about 0.8 to about 1.0 to obtain naphthenic type oils having a pour point of from about -60° to about 20° F.
Claim 7
Dependent Claim
162 words
A process for making naphthenic type lubricating oils .[.fom.]. .Iadd.from .Iaddend.a VI waxy crude which consists of atmospherically distilling said crude to remove wet gas, straight run gasoline, naphtha and atmospheric gas oil fractions, subjecting the residue to a vacuum distillation at about 25 to 120 mm mercury pressure absolute to obtain gas oil fractions having an SUS at 100° F. viscosity of from about 60 to about 2000, hydrotreating said gas oil fractions in the presence of a Ni/Mo catalyst at about 650° F., a hydrogen pressure of about 800 psig and a LHSV of about 1.0, and catalytically dewaxing said hydrotreated gas oil fractions in the presence of an H + form mordenite catalyst containing platinum at a temperature of about 550° to about 600° F., a hydrogen pressure of about 850 psig, and a LHSV of from about 0.8 to about 1.0 to obtain naphthenic type oils having a pour point of from about -60° to about 20° F.
Claim 8
Dependent Claim
14 words
The process of claim 5 where the low VI waxy crude is Nigerian Medium.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-02-24 | 1984-08-25 | 1985-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-02-24 | 1988-08-25 | 1989-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-02-24 | 1992-08-25 | 1993-02-24 | $7700.00 | Window Closed / Lapsed |