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LUBRICATING OIL ADDITIVE COMPOSITION AND METHOD FOR IMPROVING STORAGE STABILITY OF LUBRICATING OIL ADDITIVE COMPOSITION

机译:润滑油添加剂组合物和提高润滑油添加剂组合物贮存稳定性的方法

摘要

An object of the present invention is to provide a thiodicarboxylic acid ester having high long-term storage stability without impairing antioxidation and abrasion resistance of thiodicarboxylic acid esters. In order to achieve the above object, the present invention provides a process for preparing a compound (A) comprising a compound (A) represented by the following formula (1) and a compound (B) represented by the following formula / RTI In the formulas, 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.
机译:本发明的目的是提供一种在不损害硫代二羧酸酯的抗氧化性和耐磨耗性的情况下具有高长期储存稳定性的硫代二羧酸酯。为了实现上述目的,本发明提供了一种制备化合物(A)的方法,该化合物(A)包括下式(1)表示的化合物(A)和下式表示的化合物(B)。式中,R 1 和R 4 分别独立地表示碳原子数6〜18的烃基,R 2 和R 3 各自独立地表示具有1-4个碳原子的亚烷基。式中,R 5 表示碳原子数6〜18的烃基,R 6 和R 7 分别独立地表示亚烷基。具有1-4个碳原子

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