EP 1354931 A2 20031022 - Preparing a high viscosity index, low branch index dewaxed oil
Title (en)
Preparing a high viscosity index, low branch index dewaxed oil
Title (de)
HERSTELLUNG VON SCHMIERÖL MIT HOHEM VISKOSITÄTSINDEX UND NIEDRIGEM VERZWEIGUNGSINDEX
Title (fr)
Préparation d' une huile lubrifiante à haut indice de viscosité et à bas indice de branchement.
Publication
Application
Priority
- EP 99904511 A 19990129
- US 7707098 P 19980306
- US 10783598 A 19980630
Abstract (en)
There is disclosed a process for preparing an oil suitable for use as a lubricating oil base stock comprising: a) contacting a waxy feed over a dewaxing catalyst comprising a molecular sieve having 1-D pores with an effective pore size of between 5.0A and 7.0A, and at least one Group VIII metal present in the form of the sulfide, at a pressure of from 15 psig (103 kPa) to 2500 psig (13.8 MPa) to produce an isomerised oil having a wax content of from 3 to 40% by weight of the wax contained in the waxy feed and a pour point of greater than 0 DEG C; and b) solvent dewaxing the isomerised oil of step (a) to produce a lubricating oil base stock, whereby the lubricating base oil so produced by steps (a) and (b) has a viscosity index greater than 140 and a pour point less than or equal to -10 DEG C.There is disclosed a process for preparing an oil suitable for use as a lubricating oil base stock comprising: a) contacting a waxy feed over a dewaxing catalyst comprising a molecular sieve having 1-D pores with an effective pore size of between 5.0A and 7.0A, and at least one Group VIII metal present in the form of the sulfide, at a pressure of from 15 psig (103 kPa) to 2500 psig (13.8 MPa) to produce an isomerised oil having a wax content of from 3 to 40% by weight of the wax contained in the waxy feed and a pour point of greater than 0 DEG C; and b) solvent dewaxing the isomerised oil of step (a) to produce a lubricating oil base stock, whereby the lubricating base oil so produced by steps (a) and (b) has a viscosity index greater than 140 and a pour point less than or equal to -10 DEG C.
IPC 1-7
IPC 8 full level
C10G 45/64 (2006.01); C10G 67/04 (2006.01)
CPC (source: EP)
C10G 45/64 (2013.01); C10G 2400/10 (2013.01)
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 03014566 A 19990129