Title:
【発明の名称】高粘度指数潤滑剤の製造
Document Type and Number:
Japanese Patent JPH10510565
Kind Code:
A
Abstract:
Petroleum wax feeds having a low oil content are converted to high viscosity index lubricants by a two-step hydrocracking-hydroisomerization process in which the wax feed is initially subjected to hydrocracking under mild conditions with a conversion to lube range products of between generally 30 and 40 weight percent of the feed. The hydrocracking is carried out at a hydrogen pressure of at least 800 psig using an amorphous catalyst which preferentially removes the aromatic components present in the initial feed. The hydrocracked effluent is then subjected to hydroisomerization in a second step using a low acidity zeolite beta catalyst. The second stage may be operated at high pressure by cascading the first stage product into the second stage or at a lower pressure, typically from 200 to 1000 psig. The second stage catalyst is preferably a noble metal containing zeolite beta catalyst. The second stage is carried out at relatively low temperature, typically from 600 DEG to 650 DEG F. A final dewaxing step to target pour point may be used.
Inventors:
Lead, Willia Soon
Degunan, Tous Francis
Don, Nicholas
Degunan, Tous Francis
Don, Nicholas
Application Number:
JP51779996A
Publication Date:
October 13, 1998
Filing Date:
December 07, 1995
Export Citation:
Assignee:
Mobile Oil Coration
International Classes:
B01J29/78; C10G45/64; C10G47/12; C10G65/04; C10G65/10; C10G65/12; C10G67/04; C10G70/06; C10M101/02; C10M177/00; C10N30/02; (IPC1-7): C10G65/12; C10M177/00; C10G67/04
Attorney, Agent or Firm:
Aoyama Ryo (1 person outside)