Patent ID: 6703353
Filing Date: 2004-03-09
Classification: C10G,C10M,C10N,Y10S

Abstract:
A process for producing a Fischer-Tropsch derived lubricating base oil which comprises:a) recovering a Fischer-Tropsch derived product; b) separating the Fischer-Tropsch derived product into at least a first distillate fraction and a second distillate fraction, said first distillate fraction being characterized by a viscosity of about 2 cSt or greater but less than 3 cSt at 100 degrees C. and said second distillate fraction being characterized by a viscosity of about 3.8 cSt or greater at 100 degrees C.; and c) blending the first distillate fraction with the second distillate fraction in the proper proportion to produce a Fischer-Tropsch derived lubricating base oil characterized as having a viscosity of between about 3 and about 10 cSt at 100 degrees C. and a TGA Noack volatility of less than about 35 weight percent.