摘要:
A lubricating oil composition having improved antiwear, antioxidancy and fuel economy properties which comprises a hydroisomerized wax basestock and an alkoxylated amine salt of a dihydrocarbyldithiophosphoric acid of the formula ##STR1## where R.sup.1 and R.sup.2 are each independently hydrocarbyl groups having from 3 to 30 carbon atoms, R.sup.3 is a hydrocarbyl group of 2 to 22 carbon atoms, x and y are each independently integers from 1 to 15 with the proviso that the sum of x+y is from 2 to 20.
摘要:
A method for recovering oil in a reservoir by generating chemical microexplosions in the reservoir. The invention treats the hydrocarbon-bearing reservoir by decomposing in situ at least one imidazolidone derivative, thereby generating heat, shock, and CO2. A preferred method comprises the steps of depositing an imidazolidone derivative into the formation and depositing an acid into the formation to cause the imidazolidone derivative to decompose and generate heat and gas.
摘要:
The lubricating oil used to lubricate diesel engines is stabilized against the detrimental degradation effects of biodiesel fuel by the addition to the lubricating oil of an additive concentrate comprising a premix of a first antioxidant, a second antioxidant of a type different from the first and an organometallic compound.
摘要:
The invention provides novel methods for optimizing the design of a fatty acid alkyl ester-containing biofuel (e.g. a biodiesel, a biodiesel blend, or a jet biofuel) and for identifying a fatty acid alkyl ester-containing biofuel's feedstock.
摘要:
Lubricating oil used for the lubrication of engines run on biodiesel fuels are improved in their resistance to oxidation, sludge and deposits formation by the addition to said lubricating oil of detergent to increase the TBN of the lubricating oil or the addition of organic bases.
摘要:
Lubricating oil compositions of the invention comprise a major amount of a base oil of lubricating viscosity and an effective amount of at least one lubricant antioxidant, the base oil comprising a blend of a Group III base oil derived from a synthesis gas, and a Group IV base oil wherein the ratio of the Group III to Group IV base oils is such that the lubricating composition exhibits an oxidation stability determined by a measure of high temperature deposits that is less than half the mathematical sum of the oxidative stability determined for each of the unblended Group III and Group IV oils containing the same antioxidant in the same amount as in the blend.
摘要:
The invention comprises lubricating compositions and hydraulic fluids containing N,N′-diaryl-m-phenylene diamine compounds that impart good levels of oxidation inhibition in the lubricants and hydraulic fluids.
摘要:
The present invention is directed to green lubricant compositions comprising a base oil and an effective amount of premixed additives that improve wear protection and reduce phosphorus emissions.
摘要:
A wide-cut lubricant base stock is made by hydroisomerizing and then catalytically dewaxing a waxy Fischer-Tropsch synthesized hydrocarbon fraction feed and comprises the entire dewaxate having an initial boiling point in the 650-75O° F.+ range. Formulated lubricating oils made by admixing the base stock with a commercial automotive additive package meet all specifications, including low temperature properties, for multigrade internal combustion engine crankcase oils. The waxy feed has an initial boiling point in the 650-750° F. range and continuously boils to an end point of at least 1050° F.+. Lower boiling hydrocarbons produced by the process are separated from the base stock by simple flash distillation. The base stock comprises the entire dewaxate having an initial boiling point in the 650-750° F. range.
摘要:
The addition of an O-alkyl-N-alkoxycarbonylthionocarbamate to a lubricating oil imparts antiwear, antioxidant and/or friction reducing performance to the oil.