Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Sulfurized compound of indeterminate structure – which is a...
Patent
1999-03-23
2000-12-19
Howard, Jacqueline V.
Solid anti-friction devices, materials therefor, lubricant or se
Lubricants or separants for moving solid surfaces and...
Sulfurized compound of indeterminate structure, which is a...
508460, 508574, C10M14102, C10M14108
Patent
active
061627690
ABSTRACT:
A lubricating oil composition reduces the adverse effects of oxidation in a medium speed diesel engine. That lubricating oil composition has a major amount of a base oil of lubricating viscosity, from 1% to 30% of a highly overbased oil-soluble sulfurized alkaline earth metal hydrocarbyl phenate-carboxylate and from 0.1% to 5% of a polyalkylene succinimide prepared by reacting under reactive conditions a mixture of an alkenyl or alkylsuccinic acid derivative, an unsaturated acidic reagent copolymer of an unsaturated acidic reagent and an olefin, and a polyamine. When that lubricating oil composition has 0.1% to 2% of a physical mixture of from 20% to 90% of a zinc dialkyldithiophosphate derived from only primary alkyl alcohols, and from 10% to 80% of a zinc dialkyldithiophosphate derived from only secondary alkyl alcohols, the lubricating oil composition is useful for increasing the water tolerance of a medium speed diesel engine that are susceptible to water contamination.
REFERENCES:
patent: 4948522 (1990-08-01), Dunn et al.
patent: 5162085 (1992-11-01), Cane et al.
patent: 5397484 (1995-03-01), Cane et al.
patent: 5492638 (1996-02-01), Wallace et al.
patent: 5691283 (1997-11-01), Poat et al.
patent: 5714443 (1998-02-01), Cane et al.
patent: 5716912 (1998-02-01), Harrison et al.
patent: 5716914 (1998-02-01), Cane et al.
patent: 5728657 (1998-03-01), Campbell et al.
patent: 5792735 (1998-08-01), Cook et al.
patent: 5942476 (1999-08-01), Campbell
Polhaar Gerardus J. E.
Vrolijk Dick J. E.
B.V. Chevron Centrale Laboratoria
Howard Jacqueline V.
Sheridan Richard J.
Stumpf Walter L.
LandOfFree
Lubricating oil compositions suitable for use in medium speed di 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 suitable for use in medium speed di, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Lubricating oil compositions suitable for use in medium speed di will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-271191