Sulfur-containing compositions, and additive concentrates and lubricating oils containing same
A lubricating oil composition comprising a major amount of an oil of lubricating viscosity and a minor, property improving amount of an oil-soluble composition which comprises (A) at least one metal salt of at least one dithiocarbamic acid of the formula R/sub 1/(R/sub 2/)N-CSSH wherein R/sub 1/ and R/sub 2/ are each independently hydrocarbyl groups in which the total number of carbon atoms in R/sub 1/ and R/sub 2/ is sufficient to render the metal salt oil-soluble, and (B) at least one oil-soluble sulfurized Diels-Alder adduct of at least one dienophile with at least one aliphatic conjugated diene. The weight ratio of (A) to (B) is in the range of from about 1:10 to about 50:1 and further wherein the lubricating oil composition contains less than about 0.1% by weight of phosphorous.
- Assignee:
- Lubrizol Corp., Wickliffe, OH
- Patent Number(s):
- US 4623473
- OSTI ID:
- 7159284
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020500* -- Petroleum-- Products & By-Products
023000 -- Petroleum-- Properties & Composition
ADDITIVES
CARBAMIC ACID ESTERS
CARBOXYLIC ACID ESTERS
CHEMICAL COMPOSITION
DIENES
ESTERS
HYDROCARBONS
LUBRICANTS
LUBRICATING OILS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM PRODUCTS
PHOSPHORUS COMPOUNDS
POLYENES
QUANTITY RATIO
SOLUBILITY
SULFUR COMPOUNDS
VISCOSITY