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US 8,784,643 B2Granted
170 neutral base oil with improved properties
AssigneeChevron U.S.A. Inc.
InventorsJohn Michael Rosenbaum, Brent K Lok, Kathy Ann Helling, Steven Lee, Ryan Joseph Schexnaydre, Susan Marjorie Abernathy
Life of this patent
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Abstract
We provide a base stock comprising hydrocarbons with consecutive numbers of carbon atoms, wherein the base stock has a boiling range from 388 to 538° C., a VI from 105 to less than 130, and a Noack volatility from 5 to 11.5 wt % or a CCS VIS at −25° C. from 2000 to 4000 mPa·s. We also provide a base stock slate comprising the base stock and an additional base stock having an additional boiling range from 371 to 496° C., and other properties.
Claims15
A base stock, comprising:
- hydrocarbons with consecutive numbers of carbon atoms, wherein the base stock has a boiling range from 730 to 1000° F. (388 to 538° C.);
- a VI from 105 to less than 130;
- a Noack volatility from 5 to 11.5 wt %;
- and less than 0.1 wt % total aromatics.
1 more element
A base stock, comprising:
- hydrocarbons with consecutive numbers of carbon atoms, wherein the base stock has a boiling range from 730 to 1000° F. (388 to 538° C.);
- a VI from 105 to less than 130;
- a CCS VIS at −25° C. from 2000 to 4500 mPa·s;
- and less than 0.1 wt % total aromatics.
1 more element
A base stock slate, comprising:
- a. a first base stock having a first boiling range front 730 to 1000° F. (388 to 538° C.);
- a first VI from 105 to less than 130;
- a first Noack volatility from 5 to 11.5 wt %, a first CCS VIS at −25° C. from 2000 to 4000 mPa·s;
- and less than 0.1 wt % total aromatics;
- and
- b. an additional base stock having:
- i. an additional boiling range from 700 to 925° F. (371 to 496° C.),
- ii. an additional VI from 105 to 119,
- iii. an additional Noack volatility less than 18 wt %, and
- iv. less than 0.1 wt % total aromatics.
7 more elements
Dependencies are inferred from the claim text.