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:
Additives for lubricating oils and for fuel oils which comprise as the main component a disulfide represented by the following general formula (I) or (IV):
R 1 OOC-A 1 -S x -A 2 -COOR 2 (I)
(R 1 and R 2 each independently represent a hydrocarbyl group which has 1 to 30 carbon atoms and may have oxygen atom, sulfur atom or nitrogen atom, A 1 and A 2 each independently represent a group represented by CR 3 R 4 , R 3 and R 4 each independently representing hydrogen atom or a hydrocarbyl group having 1 to 20 carbon atoms, and x represents 2.)
R 1 OOC-A 3 -S x -A 4 -COOR 2 (IV)
(R 1 and R 2 are as defined above, A 3 and A 4 each independently represent a group represented by CR 5 R 6 -CR 7 R 8 , R 5 to R 8 each independently representing hydrogen atom or a hydrocarbyl group having 1 to 20 carbon atoms, and x represents 2.) The additives exhibit excellent functions as the extreme pressure additive and the antiwear agent and the suppressed corrosive property to nonferrous metals and are advantageously used as the sulfur-based extreme pressure additives for lubricating oils and fuel oils.
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:
Additives for lubricating oils and fuel oils, which contain as the main component disulfide compounds represented by the general formula (I) or (IV): R1OOC-A1-Sx-A2-COOR2 (I) (wherein R1 and R2 are each independently C1-30 hydrocarbyl which may contain oxygen, sulfur or nitrogen; A1 and A2 are each independently CR3R4 wherein R3 and R4 are each independently hydrogen or C1-20 hydrocarbyl; and x is 2), and R1OOC-A3-Sx-A4-COOR2 (IV) (wherein R1 and R2 are as defined above; A3 and A4 are each independently CR5R6-CR7R8 wherein R5 to R8 are each independently hydrogen or C1-20 hydrocarbyl; and x is 2). The additives exhibit excellent functions as extreme -pressure additive or anti-wear additive and little corrode nonferrous metals, thus being useful as sulfur-containing extreme-pressure additives suitable for lubricating oils and fuel oils.
摘要:
The present invention provides a polyvinyl ether compound containing an alkylene glycol or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a molecular weight in the range of 300 to 3,000. It shows high volume resistivity and a high viscosity index, so it can be favorably used as lubricating oil for a compression refrigerator.
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:
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:
An additive for lubricating oils and fuel oils comprising a disulfide compound, as the main component, represented by the general formula (I):
R 1 OOC-CR 3 R 4 -CR 5 (COOR 2 )-S-S-CR 10 (COOR 7 )-CR 8 R 9 -COOR 6 ··· (I)
wherein R 1 , R 2 , R 6 , and R 7 each independently represent a hydrocarbyl group having from 1 to 30 carbon atoms and may contain an oxygen, sulfur, or nitrogen atom; and R 3 to R 5 and R 8 to R 10 each independently represent a hydrogen atom or hydrocarbyl group having from 1 to 5 carbon atoms, a lubricant oil composition and fuel oil composition comprising the additive are prepared to provide a sulfur-based extreme-pressure additive which exhibits excellent load carrying capacity and wear resistance and corrosion resistance against nonferrous metals and can be used in lubricating oils and fuel oils, and to provide a lubricating oil composition and fuel oil composition containing the additive.
摘要翻译:用于润滑油和燃料油的添加剂,其包含以通式(I)表示的二硫化物化合物作为主要成分:ƒ€ƒ€ƒ€ƒ€ƒ€ƒR1 OOC-CR 3 R 4 -CR 5(COOR 2)-SS-CR 10(COOR 7)-CR 8 R 9 -COOR 6 ...€ƒ€ƒ€ƒ(I)其中R 1,R 2,R 6, 和R 7各自独立地表示具有1至30个碳原子的烃基,并且可以含有氧,硫或氮原子; R 3〜R 5和R 8〜R 10各自独立地表示氢原子或碳原子数为1〜5的烃基,制备含有该添加剂的润滑油组合物和燃料油组合物, 表现出优异的承载能力和耐磨性和耐有色金属的耐腐蚀性的压力添加剂,可用于润滑油和燃料油中,并提供含有该添加剂的润滑油组合物和燃料油组合物。