摘要:
Provided is a lubricating oil composition favorable for reducing friction in a sliding mechanism equipped with a piston ring and a liner, in a device having the sliding mechanism. The lubricating oil composition contains a lubricant base oil, (1) a polymethacrylate and/or an olefin copolymer having a mass-average molecular weight of 100,000 to 600,000, and (2) an ester-type ashless friction modifier and/or an amine-type ashless friction modifier, and has a shear viscosity at 150°C of 2.3 mPa· or more and less than 3.7 mPa·s.
摘要:
Disclosed herein is a composition comprising: (A) a hydrocarbon fuel; (B) at least one hydroxy carboxylic or hydroxy polycarboxylic acid ester having the following generic formula:
wherein: R 3 is selected from the group consisting of C 1 - C 18 linear or branched alkyl, C 1 - C 18 linear or branched alkenyl, alkoxyalkyl, hydroxyalkyl, aryl, and benzyl; and X- is selected from the group consisting of
and
wherein: R 1 is selected from the group consisting of hydrogen, CH 2 CO 2 R 3 , CH(OH)CO 2 R 3 , alkyl, aryl, alkoxyalkyl, and alkaryl; R 2 is selected from the group consisting of hydrogen, alkyl, and CH 2 CO 2 R 3 ; provided that: if R 1 is CH 2 CO 2 R 3 , then R 2 is hydrogen or CH 2 CO 2 R 3 ; if R 1 is CH(OH)CO 2 R 3 , then R 2 is hydrogen; if R 1 is alkyl, aryl, alkoxyalkyl, or alkaryl, then R 2 is hydrogen or alkyl;
R 4 is selected from the group consisting of hydrogen and CH 2 CO 2 R 3 ; R 5 and R 6 are independently selected from the group consisting of hydrogen, alkyl,
and aryl; and R 7 , R 8 , R 9 , and R 10 are independently selected from the group consisting of hydrogen, CO 2 R 3 , alkyl, and fused aryl; and, optionally,
(C) at least one zinc dihydrocarbyldithiophosphate of formula:
wherein n is 2 and R 2 and R 3 are independently selected hydrocarbyl groups.
摘要翻译:本文公开了一种组合物,其包含:(A)烃燃料; (B)至少一种具有以下通式的羟基羧酸或羟基多羧酸酯:其中:R 3选自C 1 -C 18直链或支链烷基,C 1 -C 18直链或支链烯基, 烷氧基烷基,羟烷基,芳基和苄基; 和X选自由以下组成的组:其中:R 1选自氢,CH 2 CO 2 R 3,CH(OH)CO 2 R 3,烷基,芳基,烷氧基烷基和烷芳基; R 2选自氢,烷基和CH 2 CO 2 R 3; 条件是:如果R 1是CH 2 CO 2 R 3,则R 2是氢或CH 2 CO 2 R 3; 如果R 1是CH(OH)CO 2 R 3,则R 2是氢; 如果R 1是烷基,芳基,烷氧基烷基或烷芳基,则R 2是氢或烷基; R 4选自氢和CH 2 CO 2 R 3; R 5和R 6独立地选自氢,烷基和芳基; R 7,R 8,R 9和R 10独立地选自氢,CO 2 R 3,烷基和稠合芳基; 和(C)至少一种下式的二烃基二硫代磷酸锌:其中n为2,R 2和R 3为独立选择的烃基。
摘要:
A process for producing alkyl fatty acid esters suitable for use as a fuel and/or lubricant. The process includes treating a feedstock containing glycerides and/or free fatty acids with a lipase, a lower alkyl alcohol and an acid catalyst under conditions to produce said alkyl fatty acid esters.
摘要:
A grease composition which comprises a lube base oil, at least one of diurea compounds represented by the general formulae (1) to (3), a naphthenic acid salt, and either succinic acid or a derivative thereof, wherein the respective contents of the diurea compounds represented by the general formulae (1) to (3) satisfy the relationships (4) and (5) and the content of the naphthenic acid salt and that of the succinic acid or derivative thereof each is 0.1 to 10 wt.% based on the total amount of the grease composition. (1) (2) (3) (In the formulae (1) to (3), R1 represents a C7-12 aromatic-ring-containing hydrocarbon group; R2 represents a C6-15 divalent hydrocarbon group; and R3 represents cyclohexyl or C7-12 alkylcyclohexyl.) 5 ≤ W1+W2+W3 ≤ 35 (4) 0 ≤ (W1+0.5×W2)/(W1+W2+W3) ≤ 0.55 (5) [In the relationships (4) and (5), W1, W2, and W3 are the contents (wt.%) of the diurea compounds respectively represented by the general formulae (1) to (3) based on the total amount of the grease composition.]
摘要:
Alkenyl or alkyl succinimide additives which are the reaction product of a high molecular weight alkenyl- or alkyl-substituted succinic anhydride and a polyalkylene polyamine having an average of greater than 4 nitrogen atoms per mole, wherein the reaction product is post-treated with a cyclic carbonate, are compatible with fluoroelastomer engine seals and, for concentration levels at which fluoroelastomer seal compatibility is achieved, possess improved dispersancy and/or detergency properties when employed in chlorine-free lubricating oils.
标题翻译:THERMISCHE UMSETZUNGSPRODUKTE AUS MALEINSURANHYDRID UND OLIGOALKENEN,DERIVATE DER THERMISCHEN UMSETZUNGSPRODUKTE MIT AMINEN ODER ALKOHOLEN UND IHRE VERWENDUNG
摘要:
The invention relates to thermal conversion products comprised of maleic anhydride and oligoalkenes which can be obtained by the oligomerization of linear C8- to C12-1-alkenes, preferably in the presence of a titanium, zirconium or hafnium-metallocene catalyst and in the presence of an activator based on organoaluminum, organoboron or carbocationic compounds. Said conversion products comprise a vinylidene double bond portion of over 30 % and a numerical mean molecular weight ranging from 1,000 to 20,000. The invention also relates to derivatives of the thermal conversion products with amines or alcohols and to the use of said derivatives as fuel and lubricant additives.
摘要:
Methods are revealed for producing polyolefin substituted carboxylic acylating agents having less than 1000 ppm chlorine, and reaction products formed therefrom such as dispersants. The carboxylic acylating agents are formed by reacting a polyolefin having labile halogen content with an α-β unsaturated carboxylic acid. The products formed in this invention are used in lubricating compositions.
摘要:
A low sediment process for forming a borated, oil soluble, polymer-substituted, nitrogen- or ester-containing lubricating oil additive. A polymer-substituted, nitrogen- or ester-containing additive in the presence of a solvent therefor, is contacted under boronating reaction conditions in a reaction zone with particulate boric acid. The boric acid has a particle size distribution in lubricating oil characterized by a Ζ value of not greater than about 450. The Ζ value is the ratio of said particles' total spherical volume divided by said particles' total spherical external surface area; i.e., Ζ = total spherical volume/total spherical surface area = Σi (4/3)Niπdi3/Σ¿i? Niπdi?2¿ wherein, for each of a plurality of distribution segments defining a particle size range; d¿i? is the average particle diameter for the ith distribution segment; Ni is the particle volume percent of the ith distribution segment; and the sum is taken over all the distribution segments.