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