公开(公告)号：US5098551A

公开(公告)日：1992-03-24

申请号：US523806

申请日：1990-05-16

申请人： Jean-Marie A. Bertaux ,  Jean-Claude M. Holley ,  Martinus M. P. Janssen

发明人： Jean-Marie A. Bertaux ,  Jean-Claude M. Holley ,  Martinus M. P. Janssen

IPC分类号： C10G45/58 ,  C10G45/60 ,  C10G50/02 ,  C10G67/04 ,  C10G71/00

CPC分类号： C10G45/58 ,  C10G2400/10

摘要： Lubricating base oils having a high viscosity index, preferably at least 135, are manufactured by catalytic hydroisomerization of a hydrocarbonaceous feedstock, derived from a waxy crude oil, which feedstock has not been treated to remove a lubricating base oil fraction and which feedstock contains at least 30% by weight wax and has at least 80% by weight boiling above 300.degree. C. and at most 30% by weight boiling above 540.degree. C.