公开(公告)号：US3790470A

公开(公告)日：1974-02-05

申请号：US3790470D

申请日：1972-12-06

Applicant: TEXACO INC

Inventor： MEAD T ,  CUMMINS B ,  COLEMAN R

IPC: C10G67/04 ,  C10G13/00

CPC classification number: C10G67/0409 ,  C10G2400/10

Abstract: LUBRICATING OILS OF IMPROVED VISCOSITY INDEX AND IMPROVED STABILITY TO ULTRAVIOLET LIGHT ARE PREPARED BY A PROCEDURE INVOLVING HYDROCRACKING, SOLVENT EXTRACTION, HYDRGENATION OF THE AROMATIC-RICH EXTRACT AND REBLENDING.

公开(公告)号：US3830730A

公开(公告)日：1974-08-20

申请号：US24214372

申请日：1972-04-07

Applicant: TEXACO INC

Inventor： MEAD T ,  ODELL N ,  BENSON R

IPC: C10G71/00 ,  C10G31/14 ,  C10G23/02 ,  C10G43/08

CPC classification number: C10G71/00

Abstract: A METHOD OF IMPROVING THE VISCOSITY INDEX (vI) OF HYDROCARBON LUBRICATING OIL FRACTIONS COMPRISING ESSENTIALLY COMPLETELY ABSORBING A HYDROCARBON LUBRICATING CHARGE OIL, E.G., A SOLVENT EXTRACT RECOVERED FROM AN EXTRACT PHASE EXITING FROM EXTRACTION ZONE IN SOLVENT REFINING OF LUBRICATING OIL, ON A SOLID ABSORBENT, SELECTIVELY ELUTING THE OIL CONTAINING SOLID ABSORBENT WITH AT LEAST ONE LIQUID SOLVNET HAVING A DIELECTRIC CONSTANT OF LESS THAN ABOUT 15, RECOVERING FROM THE RESULTANT ELUTION SOLUTION AN ELUATE LUBE OIL FRACTION OF HIGHER VISCOSITY INDEX THAN THE CHARGE OIL AND HYDROREFINING THE RECOVERED HIGHER VISCOSITY INDEX ELUATE OIL FRACTION TO FORM A HYDROREFINED OIL FRACTION OF A VISCOSITY INDEX GREATER THAN SAID ELUATE OIL FRACTION.

公开(公告)号：US3803028A

公开(公告)日：1974-04-09

申请号：US35427673

申请日：1973-04-25

Applicant: TEXACO INC

Inventor： CUMMINS B ,  ASHTON W ,  MEAD T ,  COLEMAN R

IPC: C10G45/44 ,  C10G47/02 ,  C10G49/00 ,  C10G37/10 ,  C01B33/28

CPC classification number: C10G49/007 ,  C10G2400/10

Abstract: The viscosity index of a lubricating oil is improved by contacting the oil at elevated temperature and pressure with a catalyst having hydrogenation activity in the presence of hydrogen and in the presence of carbon monoxide.