ADDITIVES FOR LUBRICATING OILS AND FUEL OILS, LUBRICATING OIL COMPOSITIONS, AND FUEL OIL COMPOSITIONS
申请人:IDEMITSU KOSAN CO., LTD.
公开号:EP1602709A1
公开(公告)日:2005-12-07
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):
R1OOC-A1-Sx-A2-COOR2 (I)
(R1 and R2 each independently represent a hydrocarbyl group which has 1 to 30 carbon atoms and may have oxygen atom, sulfur atom or nitrogen atom, A1 and A2 each independently represent a group represented by CR3R4, R3 and R4 each independently representing hydrogen atom or a hydrocarbyl group having 1 to 20 carbon atoms, and x represents 2.)
R1OOC-A3-Sx-A4-COOR2 (IV)
(R1 and R2 are as defined above, A3 and A4 each independently represent a group represented by CR5R6-CR7R8, R5 to R8 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.
用于润滑油和燃油的添加剂,其主要成分是由以下通式 (I) 或 (IV) 所代表的二硫化物:
R1OOC-A1-Sx-A2-COOR2 (I)
(R1 和 R2 分别独立地代表具有 1 至 30 个碳原子并可能具有氧原子、硫原子或氮原子的烃基,A1 和 A2 分别独立地代表 CR3R4 所代表的基团,R3 和 R4 分别独立地代表氢原子或具有 1 至 20 个碳原子的烃基,x 代表 2)。
R1OOC-A3-Sx-A4-COOR2 (IV)
(R1 和 R2 如上定义,A3 和 A4 各自独立地代表一个由 CR5R6-CR7R8 所代表的基团,R5 至 R8 各自独立地代表氢原子或具有 1 至 20 个碳原子的烃基,x 代表 2)。这些添加剂具有优异的极压添加剂和抗磨剂功能以及对有色金属的抑制腐蚀性能,可作为润滑油和燃料油的硫基极压添加剂使用。