Title:
NOVEL DEWAXING METHOD
Document Type and Number:
Japanese Patent JP2002097477
Kind Code:
A
Abstract:
To develop a dewaxing method which uses a chlorine-free dewaxing auxiliary effective for all types (light type, heavy type, and bright stock) of wax-containing hydrocarbon oils in the solvent dewaxing method.
This dewaxing method uses a random or block copolymer of a 2-4C olefin and an alkyl (meth)acrylate whose alkyl group has 1-22 carbon atoms as the dewaxing auxiliary. The dewaxing auxiliary to be used in this method shows effects on all types of wax-containing hydrocarbon oils singly. Further, the dewaxing auxiliary is chlorine-free, and accordingly environmentally friendly and has no fear of the corrosion of equipments even if it should be decomposed.
Inventors:
MATSUI YUICHI
HAGA NAOKI
HIRAIDE AKIYUKI
HAGA NAOKI
HIRAIDE AKIYUKI
Application Number:
JP2000326180A
Publication Date:
April 02, 2002
Filing Date:
September 21, 2000
Export Citation:
Assignee:
TOHO CHEM IND CO LTD
International Classes:
C10G73/06; C10G73/32; (IPC1-7): C10G73/06; C10G73/32