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Title:
LUBRICANT BASE OIL AND METHOD FOR PRODUCING THE SAME, AND ELECTRICAL INSULATION OIL
Document Type and Number:
Japanese Patent JP2014196391
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a lubricant base oil excellent in electrical insulation, and a method for producing the same, and an electrical insulation oil.SOLUTION: The lubricant base oil can be produced by: subjecting a synthetic wax obtained by gas-to-liquid process, or a lube oil fraction separated from the synthetic wax, to hydrocracking treatment, to obtain hydrocracked oil whose normal paraffin content percentage is 30% or more and 50% or less; and then, subjecting the hydrocracked oil to hydrogenation-isomerization dewaxing treatment in the presence of hydrogenation-isomerization catalyst, to obtain lubricant base oil whose specific volume resistance at 80°C is 1 TΩ m or more and the specific volume resistance at 25°C to the specific volume resistance at 80°C satisfies the condition represented by the following equation (1). B(25°C)/A(80°C)≥1.5 (1) [In equation (1), A(80°C) denotes specific volume resistance of the lubricant base oil at 80°C and B(25°C) denotes specific volume resistance of the lubricant base oil at 25°C.]

Inventors:
TAGAWA KAZUO
Application Number:
JP2013072237A
Publication Date:
October 16, 2014
Filing Date:
March 29, 2013
Export Citation:
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Assignee:
JX NIPPON OIL & ENERGY CORP
International Classes:
C10G65/12; C10G45/62; C10G45/64; C10G47/00; C10M105/04; C10M177/00
Domestic Patent References:
JP2008522008A2008-06-26
JP2007186638A2007-07-26
JPH10511425A1998-11-04
JP2008522008A2008-06-26
JP2007186638A2007-07-26
JPH10511425A1998-11-04
Other References:
JPN6016026356; 潤滑ハンドブック 第3版, 19750601, p.276-283, 株式会社 養賢堂
Attorney, Agent or Firm:
Yoshiki Hasegawa
Yoshiki Kuroki
Yoshinori Shimizu
Hiroyuki Hirano