C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 141/06 (2006.01) C10M 133/04 (2006.01) C10M 133/16 (2006.01) C10M 161/00 (2006.01) C10M 169/04 (2006.01)
Patent
CA 2489147
A lubricant composition comprising a major amount of baseoil lubricant and a minor amount of lubricant additive. The lubricant additive includes (a) a dispersant containing at least one member selected from hydrocarbyl-substituted succinimides, hydrocarbyl-substituted amines, and Mannich base adducts derived from hydrocarbyl- substituted phenols condensed with an aldehyde and an amine, and (b) a viscosity index improver that includes a substantially linear block copolymer having a number average molecular weight as determined by gel permeation chromatography ranging from about 50,000 to about 250,000. The block copolymer is derived from a conjugated diene monomer containing no less than 5 carbon atoms and a monoalkenylarene monomer, wherein the block copolymer has an aromatic content ranging from about 10 wt.% to about 50 wt% and an olefinic unsaturation ranging from about 0.5 wt.% to about 5 wt%.
Lam William Y.
Mishra Munmaya K.
Srinivasan Sanjay
Afton Chemical Corporation
Macrae & Co.
LandOfFree
Lubricating oil compositions does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Lubricating oil compositions, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lubricating oil compositions will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1756921