摘要:
Amides of unsaturated cyclic keto acids, useful as friction improvers in lubricating oils, may be prepared by reaction of an amine such as ethanolamine with an unsaturated cyclic keto acid.
摘要:
A lubricating oil composition characterized by having a Total Base Number from about 5 to 40 comprising a mineral lubricating oil, an overbased calcium sulfonate, a zinc dihydrocarbyl dithiophosphate, an ethoxylated alkylphenol, an alkenylsuccinimide, a polymethacrylate, an ethylene-propylene copolymer, an alkylated diphenylamine and an N-alkylglycine derivative having the formula: ##STR1## in which R is a hydrocarbyl radical having from about 10 to 25 carbon atoms, R' represents hydrogen or an alkyl, hydroxyalkyl or an aminoalkyl radical having from 1 to 5 carbon atoms and R" represents an alkyl or hydroxyalkyl radical having from 1 to 5 carbon atoms or a --CH.sub.2 --CH.sub.2 --NH).sub.x H radical in which x has a value from 1 to 3, or ##STR2## in which X represents an oxygen atom or a divalent N--R' radical and R and R' have the values noted above.
摘要:
This specification relates to novel oxymolybdenum dialkyldithiophosphates having the generic formula [(RO).sub.2 PS.sub.2 ].sub.2 Mo.sub.2 O.sub.4, wherein R is a hydrocarbyl group having 1 to 30 carbon atoms. It also relates to the use of these compounds in lubricants as extreme pressure, antiwear, and oxidation-inhibiting additives.
摘要:
Aluminum bromide is prepared by an electrochemical process in a cell with an aluminum anode, employing as the electrolyte, a solution of hydrogen bromide in an aprotic solvent capable of dissolving both hydrogen bromide and aluminum bromide. After initiation of the reaction with an electric current, the reaction proceeds without additional electrical power. The product is a solution of aluminum bromide and may also include solid aluminum bromide if the amount produced exceeds the solubility limit of the solvent.
摘要:
The invention provides for compositions and methods for treating a patient suffering from chronic idiopathic thrombocytopenic purpura, and methods for making the composition. In preferred embodiments, the composition is made from several plant or herbs including: Radix Astragalus, Rehmania glutinosa, Rhizoma Acori gramenei, Rhizoma Alismatis, and Rhizoma Smilacis glabrae. The composition may be made in the form of an aqueous extract or decoction of the several or combined plants or herbs, or may be formed as a dry composition to be administered as a pill or suspension. The invention provides for an effective, low cost, simple to administer treatment for chronic idiopathic thrombocytopenic purpura, especially in otherwise refractive cases.
摘要:
Disclosed are novel compounds prepared by the reaction of an adduct of a phosphosulfurized polyisoalkylene or alpha olefin with an acidified hexavalent molybdenum salt which give enhanced copper corrosion protection relative to the non-molybdenum treated adducts when incorporated in lubricants.Also disclosed is the combination of such compounds with a zinc dialkyldithiophosphate, which combination imparts to lubricants an oxidation inhibition greater than is obtainable with either the zinc dialkyldithiophosphate or the molybdenum-containing adduct alone.
摘要:
Lubricating oil characterized by improved friction reduction contains friction reducing amounts of a keto amide prepared by the reaction of an amine and an unsaturated cyclic keto acid bearing pendant alkyl groups.
摘要:
A cylinder lubricating oil composition characterized by having a Total Base Number from about 50 to 100 comprising a mineral lubricating oil, from 10 to 20 percent of an overbased calcium sulfonate and an N-alkylglycine derivative having the formula: ##STR1## in which R is a hydrocarbyl radical having from about 10 to 25 carbon atoms, R' represents hydrogen or an alkyl, hydroxyalkyl or an aminoalkyl radical having from 1 to 5 carbon atoms and R" represents an alkyl or hydroxyalkyl radical having from 1 to 5 carbon atoms or a --CH.sub.2 --CH.sub.2 --NH).sub.x H radical in which x has a value from 1 to 3, or ##STR2## in which X represents an oxygen atom or a divalent N--R' radical and R and R' have the values noted above.
摘要:
A marine crankcase lubricating oil composition characterized by having a Total Base Number from about 3 to 10 comprising a mineral lubricating oil, an overbased calcium alkylphenolate, a zinc dihydrocarbyl dithiophosphate, an ethoxylated alkylphenol, and an N-alkylglycine derivative having the formula: ##STR1## in which R is a hydrocarbyl radical having from about 10 to 25 carbon atoms, R' represents hydrogen or an alkyl, hydroxyalkyl or an aminoalkyl radical having from 1 to 5 carbon atoms and R" represents an alkyl or hydroxyalkyl radical having from 1 to 5 carbon atoms or a --CH.sub.2 --CH.sub.2 --NH).sub.x H radical in which x has a value from 1 to 3, or ##STR2## in which X represents an oxygen atom or a divalent N-R' radical and R and R' have the values noted above.
摘要:
Disclosed are molybdenum derivatives of high molecular weight alkenylsuccinimides and lubricant compositions containing such derivatives which impart dispersant, oxidation inhibition, anti-wear and friction-reducing properties to these compositions.