Patent ID: 6506297
Filing Date: 2003-01-14
Classification: C10G,C10M,C10N

Abstract:
A biodegradable hydrocarbon lubricant base oil, wherein isoparaffins contained in said hydrocarbon lubricant base oil have methyl branches in an amount less than about 7.5 methyl branches per 100 carbons in the isoparaffin molecules, produced by a process comprisingcontacting a 700Â° F.+ Fischer-Tropsch feed with hydrogen over a bifunctional non-noble Group VIII metal catalyst to produce hydroisomerization and hydrocracking reaction at 700Â° F.+ conversion levels ranging from about 20 to about 50 percent on a once through basis, based on the weight of 700Â° F.+ feed converted to 700Â° F.âˆ’ materials to produce a C5-1050Â° F.+ crude fraction, recovering from the C5-1050Â° F.+ fraction a residual fraction having an initial boiling point ranging from about 650Â° F. to about 750Â° F., dewaxing the residual fraction and recovering a dewaxed oil thereby producing a biodegradable hydrocarbon base oil.