Abstract:
An object of the present invention is to provide: an additive composition for a lubricating oil that exhibits high friction-reducing effects even under severe conditions in which high contact pressure is applied; and a lubricating oil composition obtained by blending the composition in a base oil. In order to achieve the object, the present invention provides the following lubricant composition and a lubricant oil composition obtained by blending the composition in a base oil. The lubricant composition includes: a molybdenum dithiocarbamate (A) represented by the general formula (1) ; and a copolymer (B) that includes, as essential constitutional units, a unit (a) represented by the general formula (2) and a unit (b) represented by the general formula (3), has a weight-average molecular weight of from 5,000 to 150,000, and has a composition ratio of the unit (a) to the unit (b), i.e., (a)/(b), of from 50/50 to 90/10 by mole.
Abstract:
PROBLEM TO BE SOLVED: To provide a lubricant composition comprising an amine-based antioxidant capable of inhibiting degradation of a lubricant composition for a long time. SOLUTION: The lubricant composition comprises, as an antioxidant, one or more compounds represented by general formulas (1)-(4), wherein one or more hydrogen atoms bonded to carbon atoms are replaced by hydrocarbon groups which may contain one or more groups selected from the group consisting of a carbonyl group, an ester group, an ether group or an amino group. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To meet the need for a lubricating oil capable of dispersing a large amount of sludge, which has arose along with the spread of compact, high-performance engines in recent years, as sludge formation cannot be avoided in engine oils and, although the formed sludge can be dispersed using dispersants such as alkenyl succinimide, sludge formation increases under high-temperature conditions produced by operation at high-speed rotation, and it is difficult for existing dispersants to completely disperse the increased amount of sludge. SOLUTION: The lubricant oil composition comprises a novel phosphomolybdenum compound and the existing dispersants, i.e. alkenyl succinimides. By adding the novel phosphomolybdenum compound, the lubricant oil composition exerts an excellent dispersing performance, even at elevated temperatures, and reduces the amount of sludge that used to be formed in large amounts in high-temperature regions. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a thiodicarboxylic acid ester of high long-term storage stability with its own anti-oxidizing performance and abrasion-resisting performance kept intact.SOLUTION: A lubricating oil additive composition is provided, comprising (A) a compound represented by general formula (1) (wherein, Rand Rare each independently a 6-18C hydrocarbon group; and Rand Rare each independently a 1-4C alkylene group) and (B) a compound represented by general formula (2) (wherein, Ris a 6-18C hydrocarbon group; and Rand Rare each independently a 1-4C alkylene group), and having an acid value of 0.01-0.4 mgKOH/g.
Abstract:
PROBLEM TO BE SOLVED: To provide a low temperature fluidity improver capable of efficiently improving low temperature fluidity and a CFPP of a fatty acid methyl ester. SOLUTION: The low temperature fluidity improver for a fatty acid methyl ester comprises following components (X) and (Y). The component (X) is a copolymer (X1) obtained by copolymerizing a monomer (a) (general formula (1)) and a monomer (b) (general formula (2)); and/or a copolymer (X2) obtained by copolymerizing the monomer (a), the monomer (b), and another monomer (c) having a carbon-carbon double bond. The component (Y) is a copolymer (Y1) obtained by copolymerizing a monomer (d) (general formula (3)) and a monomer (e) (general formula (4)); and/or a homopolymer (Y2) obtained by polymerizing the monomer (e). In general formula R 1 CH=CHR 2 (1), R 1 and R 2 are each independently an oxygen atom, a 1-100C hydrocarbon group which may be interrupted by -C(=O)-, -C(=O)O-, -OC(=O)-, or -OC(=O)O-, or a hydrogen atom. General formula (2) is shown in figure (2). In general formula R 3 CH=CH 2 (3), R 3 is a hydrogen atom or a phenyl group. In general formula CH 2 =CR 4 (LR 5 ) (4), R 4 is a hydrogen atom or a methyl group, L is -C(=O)O- or -OC(=O)-, and R 5 is a 1-40C hydrocarbon group. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a new indole compound suppressing oxidative deterioration of various lubricating oil compositions over a long period and to provide a lubricating oil composition comprising the compound. SOLUTION: The new indole compound is characterized as being represented by general formula (1) (wherein, R 1 to R 4 represent each a hydrogen atom or an alkyl group; and R 5 and R 6 represent each a hydrogen atom, an alkyl group or an oxyalkyl group, with the proviso that R 5 and R 6 are not simultaneously a hydrogen atom). COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lubricant durable for a longer use than existing antioxidants.SOLUTION: An antioxidant composition for a lubricant contains a phenolic compound (A) represented by the specified general formula (1) or the like, and a sulfur-containing compound (B) represented by the general formula (3) or the like.
Abstract:
PROBLEM TO BE SOLVED: To provide a low-temperature fluidity improver capable of improving low temperature fluidity and a CFPP (cold filter plugging point).SOLUTION: There is provided a low-temperature fluidity improver for fatty acid methyl ester represented by general formula (1) (wherein A1 is a linking group having an alkylene group; R is a 1-30C aliphatic hydrocarbon group or 6-20C aromatic hydrocarbon group which may be replaced with a hydroxy group; m is a mole fraction and is 0.25 to 0.85; and l is a number of 1 to 4,000).
Abstract:
PROBLEM TO BE SOLVED: To provide a lubricant additive exhibiting good antioxidation performances and being less corrosive, and a lubricating oil composition comprising the same. SOLUTION: The lubricant additive comprises a phosphorus-molybdenum compound prepared by causing a pentavalent and/or hexavalent inorganic molybdenum compound to react with an organic phosphorous compound other than acidic phosphate esters, particularly an acidic organic phosphorous compound represented by general formula (1) (wherein h, k, m and n are each a numerical value of 0 or 1; when n is 0, h+k+m is a numerical value of 0-3; when n is 1, h+k+m is a numerical value of 0-2; and R 1 -R 3 are each a hydrogen atom or a hydrocarbon group and R 1 -R 3 are not simultaneously a hydrogen atom). COPYRIGHT: (C)2009,JPO&INPIT
Abstract translation:要解决的问题:提供表现出良好的抗氧化性能和较少腐蚀性的润滑剂添加剂和包含该润滑剂的润滑油组合物。 解决方案:润滑添加剂包括通过使五价和/或六价无机钼化合物与除酸性磷酸酯以外的有机磷化合物,特别是由通式(I)表示的酸性有机磷化合物反应制备的磷钼化合物 1)(其中h,k,m和n各自为数值0或1;当n为0时,h + k + m为0-3的数值;当n为1时,h + k + m 是0-2的数值; R 1 SP> -R 3 SP>分别是氢原子或烃基,R 1 3 SP>不同时为氢原子)。 版权所有(C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a lubricating oil additive that affords an antioxidant attaining both prolongation of the life of a lubricating oil composition and reduction of a specific component such as a metal component or a phosphorus atom, and a lubricating oil composition comprising the same. SOLUTION: The phosphorus-molybdenum compound is represented by general formula (1) (wherein R 1 , R 2 and R 3 are each independently a 1-20C hydrocarbon group). COPYRIGHT: (C)2008,JPO&INPIT