Title:
【発明の名称】改良された酸化安定性を有する潤滑剤基油を製造するための方法
Document Type and Number:
Japanese Patent JP2003517496
Kind Code:
A
Abstract:
The instant invention is directed to a process for producing an improved lubricating base stock having a preselected desired oxidation stability comprising the steps of: (a) hydroisomerizing a hydrocarbon wax to obtain a lubricating base stock, (b) irradiating, within the frequency of about 4600 to about 3500 cm-1 or about 1300 to about 600 cm-1, said lubricating base stock produced from hydroisomerization of said hydrocarbon wax, (c) measuring the absorption spectrum, within said frequency range of step (b), of said lubricating base stock using FT-IR, (d) converting said absorption spectrum into a number representative of the viscosity index of said lubricating base stock of step (a), (e) comparing the viscosity index produced in step (c) to a preselected viscosity index correlating to a preselected desired oxidative stability for said lubricating base stock of step (a), and then, (f) modifying said hydroisomerization of said hydrocarbon wax to increase the production of lubricating base stock having said preselected desired oxidative stability of step (e).
Inventors:
Aldrich Harven Scott
Suzobota John Stefan
Whittenblink Robert Jay
Suzobota John Stefan
Whittenblink Robert Jay
Application Number:
JP2000563743A
Publication Date:
May 27, 2003
Filing Date:
July 30, 1999
Export Citation:
Assignee:
EXXON RESEARCH AND ENGINEERING COMPANY
International Classes:
C10G45/58; C10G45/72; C10G71/00; C10M105/04; G01N33/28; C10N20/00; C10N30/02; C10N30/10; C10N70/00; (IPC1-7): C10G45/58; C10G71/00; C10M105/04
Attorney, Agent or Firm:
Toshiaki Ikeura