LUBRICATING-OIL BASE OIL, METHOD FOR PRODUCING SAME, AND ELECTRICALLY INSULATING OIL

WIPO Patent Application WO/2014/157384

A1

Disclosed is a method for producing a lubricating-oil base oil in which the volume resistivity at 80°C is 1 TΩ·m or greater, and in which the volume resistivity at 25°C to the volume resistivity at 80°C satisfies the condition represented by the following formula (1), said method comprising: subjecting a synthetic wax obtained by a gas-to-liquid process, or a lubricating-oil fraction separated from said synthetic wax, to a hydrocracking treatment, and thereby obtaining a hydrocracked oil in which the content by percentage of normal paraffins is from 30% to 50% inclusive; and then, in the presence of a hydroisomerization catalyst, subjecting said hydrocracked oil to a hydroisomerization dewaxing treatment. Formula (1): B (25°C)/A (80°C) ≥ 1.5. (In formula (1), A (80°C) indicates the volume resistivity at 80°C of said lubricating-oil base oil, and B (25°C) indicates the volume resistivity at 25°C of said lubricating-oil base oil.)

WO/2018/125415	PROCESS AND APPARATUS FOR HYDROCRACKING A RESIDUE STREAM IN TWO STAGES WITH AROMATIC SATURATION
JP4938447	Lubricating base oil manufacturing method

TAGAWA KAZUO (JP)

PCT/JP2014/058633

October 02, 2014

March 26, 2014

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JX NIPPON OIL & ENERGY CORP (JP)

C10G65/12; C10G45/62; C10G45/64; C10G47/00; C10M105/04; C10M177/00; C10N20/00; C10N40/02; C10N40/04; C10N40/06; C10N40/08; C10N40/12; C10N40/16; C10N40/22; C10N40/24; C10N40/25; C10N40/30; C10N70/00

JP2008522008A	2008-06-26
JP2007186638A	2007-07-26
JPH10511425A	1998-11-04
JP2001143933A	2001-05-25
JP2010532084A	2010-09-30
JP2011148970A	2011-08-04

See also references of EP 2980190A4

HASEGAWA Yoshiki et al. (JP)
Yoshiki Hasegawa (JP)

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