EXTREME PRESSURE AGENT FOR LUBRICANT OIL, AND LUBRICANT OIL COMPOSITION CONTAINING SAME
申请人:Adeka Corporation
公开号:EP2607464A1
公开(公告)日:2013-06-26
The purpose of the present invention is to provide an extreme pressure agent which does not contain any metal element or the like and is highly safe but which exhibits performance equivalent to those of conventional extreme pressure agents each containing a metal element or the like when used in lubrication purposes.
This extreme pressure agent comprises a copolymer (A) which comprises an alkyl acrylate (a) represented by general formula (1) and a hydroxyalkyl acrylate (b) represented by general formula (2) as the essential constituent monomers, and is characterized in that the reaction ratio of the component (a) to the component (b) (i.e., (a)/(b)) is 50/50 to 80/20 (by mole) and the copolymer (A) has a weight average molecular weight of 40,000-150,000. (In formula (1), R1 represents an alkyl group having 10-18 carbon atoms.) (In formula (2), R2 represents an alkylene group having 2-4 carbon atoms.)
(in the formula, R1 represents an alkyl group having 10 to 18 carbon atoms)
(in the formula, R2 represents an alkylene group having 2 to 4 carbon atoms).
本发明的目的是提供一种极压剂,该极压剂不含任何金属元素或类似物,安全性高,但在用于润滑目的时,其性能与含有金属元素或类似物的传统极压剂相当。
这种极压剂由共聚物 (A) 组成,共聚物 (A) 由通式 (1) 所代表的丙烯酸烷基酯 (a) 和通式 (2) 所代表的丙烯酸羟烷基酯 (b) 作为基本组成单体,其特征在于组分 (a) 与组分 (b) 的反应比(即 (a)/(b) )为 50/50 至 80/20 (按摩尔计),共聚物 (A) 的重量平均分子量为 40,000-150,000 。式(1)中,R1 代表具有 10-18 个碳原子的烷基。(在式(2)中,R2 代表具有 2-4 个碳原子的亚烷基)。
(在式(1)中,R1 代表具有 10-18 个碳原子的烷基)(在式(2)中,R2 代表具有 2-4 个碳原子的亚烷基)。
(在式中,R2 代表具有 2 至 4 个碳原子的亚烷基)。