摘要:
A trunk piston or cross-head diesel engine having a centrifuge system including a sealing medium is lubricated with a lubricant which, for the cross-head engine, is a system lubricant and which contains 0.04 to 5 mass %, expressed as active ingredient, of a combination of one or more linked aromatic compounds and one or more nitrogen containing ashless disperants, in a mass:mass ratio in the range of 1:3 to 9:1.
摘要:
A lubricating oil composition having a total base number of more than 15 mg KOH/g, as determined by ASTM D2896, and including at least 40 mass % of an oil of lubricating viscosity; at least one detergent; and at least one compound of the formula (I) and/or formula (II): In formula (I), each Ar independently represents an aromatic moiety having 0 to 3 substituents selected from the group consisting of alkyl, alkoxy, alkoxyalkyl, aryloxy, aryloxyalkyl, hydroxy, hydroxyalkyl, halo and combinations thereof; each L is independently a linking moiety comprising a carbon-carbon single bond or a linking group; each Y is independently —OR1″ or a moiety of the formula H(O(CR12)n)yX—, wherein X is selected from the group consisting of (CR1′2)z, O and S; R1 and R1′ are each independently selected from H, C1 to C6 alkyl and aryl; R1″ is selected from C1 to C100 alkyl and aryl; z is 1 to 10; n is 0 to 10 when X is (CR1′2)z, and 2 to 10 when X is O or S; and y is 1 to 30; each a is independently 0 to 3, with the proviso that at least one Ar moiety bears at least one group Y; and m is 1 to 100. In formula (II), each Ar′ independently represents an aromatic moiety having 0 to 3 substituents selected from the group consisting of alkyl, alkoxy, alkoxyalkyl, hydroxy, hydroxyalkyl, acyloxy, acyloxyalkyl, aryloxy, aryloxy alkyl, halo and combinations thereof; each L′ is independently a linking moiety comprising a carbon-carbon single bond or a linking group; each Y′ is independently a moiety of the formula Z(O(CR22)n′)y′X′—, wherein X′ is selected from the group consisting of (CR2′2)z′, O and S; R2 and R2′ are each independently selected from H, C1 to C6 alkyl and aryl; z′ is 1 to 10; n′ is 0 to 10 when X′ is (CR2′2)z′, and 2 to 10 when X′ is O or S; y′ is 1 to 30; Z is H, an acyl group, an alkyl group or an aryl group; each a′ is independently 0 to 3, with the proviso that at least one Ar′ moiety bears at least one group Y′ in which Z is not H; and m′ is 1 to 100.
摘要:
A lubricating oil composition having a total base number of more than 15 mg KOH/g including oil of lubricating viscosity; detergent; and at least one compound of the formula (I) and/or formula (II): wherein Ar and Ar′ represent substituted or unsubstituted aromatic moieties; L and L′ are linking moieties; each Y is independently —ORI″or H(O(CR12)n)yX—, wherein X is (CR1′2)z, O or S; R1 and R1′ are H, alkyl or aryl; R1″ is alkyl or aryl; each Y′ is independently Z(O(CR22)n′)y′X′—, wherein X′ is (CR2′2)z′, O or S; R2 and R2′ are H, alkyl or aryl; Z is H, acyl, alkyl or aryl; z and z′ are 1 to 10; n is 0 to 10 when X is (CR1′2)z and 2 to 10 when X is O or S; n′ is 0 to 10 when X′ is (CR2′2)z′, and 2 to 10 when X′ is O or S; y and y′ are 1 to 30; a and a′ are 0 to 3; and m and m′ are 1 to 100, with the proviso that in compounds of formula (I), at least one Ar moiety bears at least one group Y and that in compounds of formula (II), at least one Ar′ moiety bears at least one group Y′ in wherein Z is not H.
摘要:
A diesel fuel composition made up of a major amount of a diesel fuel, a minor amount of at least one metallic species and a minor amount of a detergent additive is disclosed. The detergent additive includes a compound of formula: wherein:each Ar independently represents an aromatic moiety having 0 to 3 substituents selected from the group consisting of alkyl alkoxy, alkoxyalkyl, hydroxy, hydroxyalkyl, halo and combinations thereof or additionally, in the case of formula II, acyloxy, acyloxyalkyl, aryloxy, aryloxy alkyl, halo and combinations thereof, each L is independently a linking moiety comprising a carbon-carbon single bond or a linking group;each Y is independently a moiety of the formula H(O(CR2)n)yX—, wherein X is selected from the group consisting of (CR′2)2, O and S; R and R′ are each independently selected from H, C1 to C6 alkyl and aryl; z is 1 to 10; n is 0 to 10 when X is (CR′2)7, and 2 to 10 when X is O or S; and y is 1 to 30; each Y′ is independently a moiety of the formula Z(O(CR2)n)yX—, wherein X is selected from the group consisting of (CR′2)2, O and S; R and R′ are each independently selected from H, C1 to C6 alkyl and aryl; z is 1 to 10; n is 0 to 10 when X is (CR′2)z, and 2 to 10 when X is O or S; y is 1 to 30; Z is H, an acyl group, an alkyl group or an aryl group;each a is independently 0 to 3, with the proviso that in formula (I), at least one Ar moiety bears at least one group Y; and with the proviso that in formula (II), at least one Ar moiety bears at least one group Y′ in which Z is not H; and m is 1 to 100.
摘要:
Compositions in the form of lubricating oil compositions, greases, fuels or functional fluids containing, in the form of Michael adducts, N-substituted phenylenediamine additives in which at least one of the substituents on the N atoms carries a carbonyl group that is connected to an alkyl, alkoxyalkyl, or alkylthioalkyl group either directly or via an oxygen atom.
摘要:
Compositions in the form of lubricating oil compositions, greases, fuels or functional fluids containing, in the form of Michael adducts, N-substituted phenylenediamine additives in which at least one of the substituents on the N atoms carries a carbonyl group that is connected to an alkyl, alkoxyalkyl, or alkylthioalkyl group either directly or via an oxygen atom.
摘要:
A process for forming an ene reaction product wherein an enophile, such as maleic anhydride, is reacted with reactive polyalkene having a terminal vinylidene content of at least 30 mol. %, at high temperature in the presence of a free radical inhibitor. The polyalkenyl acylating agents are useful per se as additives in lubricating oils, functional fluids, and fuels and also serve as intermediates in the preparation of other products (e.g., succinimides) useful as additives in lubricating oils, functional fluids, and fuels. The presence of the free radical inhibitor during the high temperature reaction results in a reaction product that is low, or substantially free from sediment.
摘要:
The residual chlorine content of a polyolefin-substituted carboxylic acylating agent formed by a halogen-assisted reaction of a polyalkene and at least one olefinic, monounsaturated mono- or dicarboxylic acid, anhydride or ester, is reduced when the reaction is conducted in the presence of a controlled amount of a metal compound.
摘要:
The residual chlorine content of a polyolefin-substituted carboxylic acylating agent formed by a halogen-assisted reaction of a polyalkene and at least one olefinic, monounsaturated mono- or dicarboxylic acid, anhydride or ester, is reduced when the reaction is conducted in the presence of a controlled amount of a metal compound.
摘要:
Tetra-alkylated phenylenediamine compounds useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials and meet copper corrosion requirements, and lubricating oil compositions containing such phenylenediamine compounds.