摘要:
The purpose of the present invention is to provide a thiodicarboxylic acid ester which has high long-term storage stability without inhibiting antioxidant properties and wear-resistant properties of the thiodicarboxylic acid ester. In order to achieve the above-mentioned purpose, the present invention provides a lubricating oil additive composition which is characterized by containing a compound (A) represented by general formula (1) and a compound (B) represented by general formula (2) and by having an acid value of 0.01-0.4 mgKOH/g.
(in the formula, R 1 and R 4 each independently represent a hydrocarbon group having 6 to 18 carbon atoms and R 2 and R 3 each independently represent an alkylene group having 1 to 4 carbon atoms)
(in the formula, R 5 represents a hydrocarbon group having 6 to 18 carbon atoms and R 6 and R 7 each independently represent an alkylene group having 1 to 4 carbon atoms).
摘要:
Provided is a lubricating oil composition for an internal combustion engine, including as essential components the following component (A), component (B), and component (C), in which a phosphorus content of the composition is 50 ppm by mass to 1,000 ppm by mass: Component (A): a base oil; Component (B): a compound represented by the following general formula (1); and Component (C): a metal-containing antioxidant:
where R 1 to R 8 each independently represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms, Z represents a hydrocarbon group having 2 to 20 carbon atoms, and n represents a number of 1 to 10.
摘要:
Disclosed is a lubricant additive capable of providing an antioxidant which enables a lubricant composition to have long drain intervals, while reducing specific components such as metal contents and phosphorus atoms. Also disclosed is a lubricant composition containing such a lubricant additive. Specifically disclosed is a phosphorus-molybdenum compound represented by the following general formula (I) where R1, R2 and R3 independently represent a hydrocarbon group having 1-20 carbon atoms.
摘要:
A lubricating oil additive capable of providing an antioxidant which enables a lubricating oil composition to have long drain intervals, while reducing specific components such as metals and phosphorus atoms, and a lubricating oil composition containing the lubricating oil additive are provided. A phosphorus molybdenum compound represented by the following general formula (1)
where R 1 , R 2 , and R 3 each independently represent a hydrocarbon group having 1 to 20 carbon atoms is also provided.
摘要:
The purpose of the present invention is to provide a thiodicarboxylic acid ester which has high long-term storage stability without inhibiting antioxidant properties and wear-resistant properties of the thiodicarboxylic acid ester. In order to achieve the above-mentioned purpose, the present invention provides a lubricating oil additive composition which is characterized by containing a compound (A) represented by general formula (1) and a compound (B) represented by general formula (2) and by having an acid value of 0.01-0.4 mgKOH/g. (in the formula, R 1 and R 4 each independently represent a hydrocarbon group having 6 to 18 carbon atoms and R 2 and R 3 each independently represent an alkylene group having 1 to 4 carbon atoms) (in the formula, R 5 represents a hydrocarbon group having 6 to 18 carbon atoms and R 6 and R 7 each independently represent an alkylene group having 1 to 4 carbon atoms).
摘要:
Provided is an antioxidant composition, including: a compound (A) represented by the following general formula (1); and an amine-based antioxidant (B) and/or a phenol-based antioxidant (C) other than the compound (A):
(wherein R represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, and n represents a number from 1 to 3.)
摘要:
Provided is a phosphorus molybdenum amine compound, represented by the following general formula (1).
where R 1 to R 6 each independently represent a hydrogen atom or a hydrocarbon group and p represents a number of 1 to 5, provided that all of R 1 to R 6 are can not al be hydrogen atoms at the same time and the phosphorus molybdenum compound is obtained by reducing a hexavalent molybdenum compound with a reducing agent, and then reacting the resulting with an acidic phosphate after neutralization with a mineral acid.