摘要:
The invention provides a lubricating oil additive for internal combustion engines which additive enables to prepare a lubricating oil composition for internal combustion engines having an enhanced base number without impairing the performance of an exhaust gas treatment apparatus such as a PM trap or an oxidation catalyst member; a lubricating oil additive composition for internal combustion engines; and a lubricating oil composition for internal combustion engines containing the lubricating oil additive composition. The invention is directed to a lubricating oil additive composition for internal combustion engines including a succinimide compound represented by formula (1) : (wherein R 1 represents a C6-C30 alkenyl group or alkyl group; each of R 1 , R 8 , R 9 , and R 10 represents hydrogen or a C1-C3 alkyl group; q is an integer from 2 to 4; n is an integer from 0 to 3; r is an integer from 2 to 4; and A represents an amino group or an N-piperazyl group), or a boron-introduced product thereof; and to use thereof.
摘要:
The present invention provides lubricating oil for a compression refrigerator, characterized by including an alkylene glycol or polyoxy alkylene glycol unit and a vinyl ether unit in a molecule and containing a polyvinyl ether compound having a molecular weight of 300 to 3,000. The lubricating oil for a compression refrigerator has a high viscosity index and excellent compatibility under a natural refrigerant atmosphere such as carbon dioxide.
摘要:
Provided are a borosuccinimide compound obtained through reaction of (a) a succinic acid/anhydride substituted with an alkyl or alkenyl group having a number-average molecular weight of from 200 to 5,000, (b) a polyalkylene-polyamine of which at least 5 mol% has a terminal cyclic structure, and (c) a boron compound; and a succinimide compound obtained through reaction of (A) a succinic acid/anhydride substituted with an alkyl or alkenyl group having a molecular weight of from 200 to 5,000, with (D) a hydrocarbon-substituted polyalkylene-polyamine. These compounds are stable even at high temperatures and have good high-temperature detergency, and they are useful for ashless detergent dispersants having the ability to disperse fine particles. Also provided are a mixture of any of these compounds and a specific ester derivative; a lubricant additive and a fuel oil additive comprising the mixture as the essential ingredient; and a lubricant and a fuel oil composition containing the additive.
摘要:
A polyvinyl ether compound characterized by having, in the molecule, an alkylene glycol unit or polyoxyalkylene glycol unit and a vinyl ether unit and having a molecular weight of 300-3,000. It has a high volume resistivity and a high viscosity index and is suitable for use as, e.g., an lubricating oil for compression refrigerating machines.
摘要:
Provided is a detergent-dispersant for a lubricant having excellent detergency and dispersibility effects. Specifically provided are: a detergent-dispersant including a heterocyclic compound having a heterocyclic skeleton derived from a compound selected from the group consisting of pyridines, pyrroles, pyrimidines, pyrazoles, pyridazines, imidazoles, pyrazines, triazines, triazoles, tetrazoles, oxazoles, oxadiazoles, thiazoles, thiadiazoles, furans, dioxanes, pyrans, and thiophenes; and an additive composition for a lubricant and a lubricant composition, each containing the detergent-dispersant.
摘要:
A lubricating oil for a compression-type refrigerator using a hydrofluorocarbon refrigerant including a polyvinyl ether-based compound containing in the molecule an alkylene glycol unit or a polyoxyalkylene glycol unit and a polyvinyl ether unit and having a molecular weight in the range of 300 to 3,000, and a refrigeration apparatus using the lubricating oil. The present invention can provide a lubricating oil for a compression-type refrigerator having good compatibility in the atmosphere of a hydrofluorocarbon and a high viscosity index, and a refrigeration apparatus using such a lubricating oil.
摘要:
A borosuccinimide compound which is obtained by reacting (a) succinic acid/anhydride substituted with alkyl or alkenyl having a number-average molecular weight of 200 to 5,000, (b) a polyalkylene-polyamine at least 5 mol% of which has a ring structure at an end, and (c) a boron compound; and a succinimide compound which is obtained by reacting (A) succinic acid/anhydride substituted with alkyl or alkenyl having a molecular weight of 200 to 5,000 with (D) a polyalkylene-polyamine substituted with a hydrocarbon group. The compounds are excellent in high-temperature stability and high-temperature detergency and are useful as an ash-free detergent dispersant having the ability to disperse fine particles. Also provided are: a mixture of either of the compounds with a specific ester derivative; a lubricant additive and a fuel oil additive each comprising these compounds as major ingredients; and a lubricant and a fuel oil composition each containing the additive.
摘要:
A lubricating oil for a compression-type refrigerator using a hydrofluorocarbon refrigerant including a polyvinyl ether-based compound containing in the molecule an alkylene glycol unit or a polyoxyalkylene glycol unit and a polyvinyl ether unit and having a molecular weight in the range of 300 to 3,000, and a refrigeration apparatus using the lubricating oil. The present invention can provide a lubricating oil for a compression-type refrigerator having good compatibility in the atmosphere of a hydrofluorocarbon and a high viscosity index, and a refrigeration apparatus using such a lubricating oil.
摘要:
The refrigerator oil of the present invention is a refrigerator oil for a refrigerant including difluoromethane (R32), which contains a polyvinyl ether-based compound (A) including a constitutional unit (a1) having a methoxyethyl group in a side chain thereof.