C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
253/127
C10M 101/02 (2006.01)
Patent
CA 1122198
A B S T R A C T A base oil composition comprising: (a) a base oil having a viscosity index of at least 94 obtained by hydrotreating a solvent-extracted raffinate having a viscosity index of at most 92, and (b) a solvent-extracted raffinate having a viscosity index of at most 92, and/or a deasphalted vacuum residue and/or a hydrotreated deasphalted vacuum residue. shows improved oxidation stability.
325143
Shell Canada Limited
Smart & Biggar
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