一种润滑改性剂及其应用,该润滑改性剂包含具有式(I)所示结构的化合物,其中基团R1和R2各自独立地为单键或取代或未取代的C1-C20亚烃基,基团R3和R4 各自独立地为氢或取代或未取代的C1-C10烃基,基团X和Y各自独立地为氢或取代或未取代的C1-C50烃基,且X和Y中的至少一个为氢。 本发明的润滑改性剂产品在油品中低用量即可显着提高油品的润滑性,稳定性好,不易氧化和/或变质,能长期保持良好的润滑性改善效果。
本发明公开了一种乙醇汽油除水保护剂及其制备方法与使用方法，该除水保护剂按重量份包括如下原料组分制成：乳化剂0.5～10份，金属腐蚀抑制剂0.02～5份和溶剂85～99份，其中，所述乳化剂为妥尔油二乙醇酰胺、失水山梨醇三硬脂酸酯或聚氧乙烯聚羟基硬脂酸酯中的一种或多种，所述金属腐蚀抑制剂为苯并三氮唑、三乙醇胺油酸脂、十二烯基丁二酸或烯基丁二酸脂中的一种或多种，制备方法为将乳化剂、金属腐蚀抑制剂和溶剂混合反应、过滤，使用方法为按乙醇汽油重量份的0.1份～2份将除水保护剂加入到乙醇汽油中。本发明的除水保护剂除水效果好，可防止燃油系统中部件锈蚀，制备简单、成本低、稳定性好。
本发明涉及至少一种羟基多元羧酸的油溶性甘油单酯、甘油二酯或甘油三酯、或其衍生物在非水性润滑剂组合物中和/或燃料组合物中作为抗凸轮轴磨损添加剂的用途。
Ethylene terpolymers with a low number average molecular weight of from 1500 to 5500 and a vinyl acetate content of from 10 to 20% by weight, useful in wax modifiers or petroleum fraction additives, are prepared by high pressure polymerization (at least 500 bar and 150°C) in presence of 10 to 25% by weight of an iso olefin such as isobutylene. Incorporation of the iso olefin gives terpolymer products containing from 3 to 13% weight of iso olefin.
包括（ａ）一种乙烯—混合不饱和酯共聚物或（ｂ）两种或多种，例如在其酯链上不同的乙烯—不饱和酯共聚物的组合物，用来改进燃料油的低温性能。
A fuel oil composition comprises a major proportion of a liquid hydrocarbon middle distillate fuel having a sulphur concentration of 0.2 % or less by weight based on the weight of the fuel, and a minor proportion of a wear-reducing additive comprising an ester for increasing the lubricity of the fuel.
A telomeric acid, a tertiary amine, and an epoxide are reacted in the absence of added water. The product recovered is effective in improving the filterability and reducing the pour point of diesel fuel. Alternatively the product can be prepared by reacting a quaternary ammonium hydroxide and a telomeric acid.
The invention provides the use of a poly(hydroxy-carboxylic acid)amide or -ester derivative of general formula I:wherein R is the residue of an amine, an aminoalcohol or a polyol linked to the or each poly(hydroxycarboxylic acid) via an amide or ester linkage; R1 is hydrogen or optionally substituted hydrocarbyl group containing up to 50 carbon atoms; A is an optionally substituted hydrocarbyl group; n is from 1-100, preferably 1-10 and p is from 1-5, as a fuel additive acting as a detergent and as a lubricity additive in fuel compositions.Moreover, the invention provides a fuel oil composition comprising of a major amount of a fuel oil, and a minor amount of an the additive as well as a additive concentration for use in a fuel oil composition.
Long chain alkyl derivs. of difunctional sulphonic gp.-contg. cpds. of formula (I) are new, where -Y-R2=SO3(-) (+)D-R2, -SO2NR3R2 or -SO3R2; -X-R1=-Y-R2, -CONR3R1, -CO2(-)(+)D-R1, -R4COOR'-R4COOR1 -NR3COR1, -R4OR1, -R4OCOR1, -R4R1 or -N(COR3)R1; D=NR3.3, HNR3.2, H2NR3 or H3N; R1, R2=alkyl, alkoxyalkyl or polyalkoxyalkyl contg. at least 10C atoms in the main chain; R3=hydrocabryl (same or different); R4=nothing or 1-5C alkylene. In the group (i) the C-C bond is either (a) ethylenically unsatd., when A and B are alkyl, alkenyl or substd. hydrocarbyl groups, or (b) part of a cyclic structure which may be aromatic, polynuclear aromatic or cycloaliphatic.
