Mineral oils: processes and products – Products and compositions – Lubricating oils
Reexamination Certificate
2007-11-28
2010-06-29
Hill, Jr., Robert J (Department: 1797)
Mineral oils: processes and products
Products and compositions
Lubricating oils
C208S049000, C208S062000, C208S064000, C208S065000, C208S133000, C208S134000, C585S310000, C585S317000, C585S331000
Reexamination Certificate
active
07744742
ABSTRACT:
The process as described herein produces a moderately aromatic isoparaffinic base oil from a distillate range product. This process comprises: (a) providing a distillate range paraffin feed comprising paraffins and cycloparaffins; (b) mildly reforming the distillate range paraffin feed to convert at least a portion of the cycloparaffins to alkylaromatics and provide a mildly reformed distillate range stream; (c) treating a stream comprising the mildly reformed distillate range stream in a molecular redistribution reactor to provide a distributed stream; (d) dewaxing at least a portion of the distributed stream to provide a dewaxed stream; (e) combining at least a portion of the dewaxed stream with the stream to be processed in the molecular redistribution reactor to provide the distributed stream; and (f) isolating a moderately aromatic isoparaffinic base oil from the dewaxed stream. According to another aspect, the process generates low ring content isoparaffinic base oil by hydrotreating the moderately aromatic isoparaffinic base oil.
REFERENCES:
patent: 3699035 (1972-10-01), Hughes et al.
patent: 3718576 (1973-02-01), Hughes et al.
patent: 3728410 (1973-04-01), Hughes
patent: 3775505 (1973-11-01), Hughes
patent: 3784622 (1974-01-01), Hughes
patent: 3793251 (1974-02-01), Hughes
patent: 3808285 (1974-04-01), Hughes
patent: 3856876 (1974-12-01), Burnett
patent: 3864417 (1975-02-01), Hughes
patent: 3914330 (1975-10-01), Hughes
patent: 4507517 (1985-03-01), DeVries et al.
patent: 4599474 (1986-07-01), DeVries et al.
patent: 4704487 (1987-11-01), DeVries et al.
patent: 4704493 (1987-11-01), DeVries et al.
patent: 4709108 (1987-11-01), DeVries et al.
patent: 4734537 (1988-03-01), DeVries et al.
patent: 4814533 (1989-03-01), DeVries et al.
patent: 4814534 (1989-03-01), DeVries et al.
patent: 4814538 (1989-03-01), DeVries et al.
patent: 6225359 (2001-05-01), O'Rear et al.
patent: 6359018 (2002-03-01), O'Rear et al.
patent: 6369286 (2002-04-01), O'Rear et al.
patent: 6392109 (2002-05-01), O'Rear et al.
patent: 6441263 (2002-08-01), O'Rear et al.
patent: 6562230 (2003-05-01), O'Rear et al.
patent: 6566569 (2003-05-01), Chen et al.
patent: 6627779 (2003-09-01), O'Rear et al.
patent: 6768037 (2004-07-01), O'Rear et al.
patent: 6833065 (2004-12-01), O'Rear et al.
patent: 6858133 (2005-02-01), Dath et al.
patent: 6864398 (2005-03-01), O'Rear et al.
patent: 6890423 (2005-05-01), O'Rear et al.
patent: 2007/0060781 (2007-03-01), Goldman et al.
patent: 1741767 (2007-01-01), None
Robert L. Burnett and Thomas R. Hughes, “Mechanism and Poisoning of the Molecular Redistribution of Alkanes with a Dual-Functional Catalyst System,” Journal of Catalysis 31, 55-64 (1973).
Thomas R. Hughes, Robert L. Burnett and Robert G. Wall, “Molecular Redistribution of Alkanes and Alkybenzenes” Proc. International Congress on Catalysis, 5th (Palm Beach, FL, Aug. 21-25) paper 87, 1217-1228 (1972).
Goldman et al., “Catalygic Alkane Metathesis by Tandem Alkane Dehydrogenation—Olefin Metathesis” Science, vol. 312, No. 5771, pp. 257-261, Apr. 14, 2006.
McPhee, A. “Upgrading kerosene to normal paraffins”, Petrochemicals and Gas Processing Petroleum Technology Quarterly, pp. 127-131, (Winter 1999/2000).
Robert L. Burnett and Thomas R. Hughes, “Mechanism and Poisoning of the Molecular Redistribution of Alkanes with a Dual Functional Catalyst System,” Journal of Catalysis 31, 55-54 (1973).
Thomas R. Hughes, Robert L. Burnett and Robert G. Wall, Proc. International Congress on Catalysis, 5th (Palm Beach, FL, Aug. 21-25) 1972 paper 87, 1217-1228.
Chevron U.S.A. Inc.
Hill, Jr. Robert J
McCaig Brian
Merchant & Gould P,C,
LandOfFree
Integration of molecular redistribution and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integration of molecular redistribution and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integration of molecular redistribution and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4229173