Mineral oils: processes and products – Products and compositions – Lubricating oils
Reexamination Certificate
2007-03-27
2007-03-27
McAvoy, Ellen M. (Department: 1764)
Mineral oils: processes and products
Products and compositions
Lubricating oils
C208S019000, C208S027000, C208S097000, C208S950000
Reexamination Certificate
active
10743932
ABSTRACT:
A process for manufacturing a finished lubricant by: a) performing Fischer-Tropsch synthesis on syngas to provide a product stream; b) isolating from said product stream a substantially paraffinic wax feed having less than about 30 ppm total nitrogen and sulfur, and less than about 1 wt % oxygen; c) dewaxing said feed by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve comprising a noble metal hydrogenation component, wherein the hydroisomerization temperature is between about 600° F. (315° C.) and about 750° F. (399° C.), to produce an isomerized oil; and d) hydrofinishing said isomerized oil, whereby a lubricating base oil is produced having specific desired properties; and e) blending the lubricating base oil with at least one lubricant additive.
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“Product Brochure of Shell MDS (Malaysia) Sdn Bhd” dated May 1995.
Abernathy Susan M.
Farina Robert J.
Kramer David C.
Krug Russell R.
Miller Stephen J.
Abernathy Susan M.
Chevron U.S.A. Inc.
Klaassen Alan W.
McAvoy Ellen M.
Turner W. Keith
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