申请人:NIPPON OIL CO. LTD.
公开号:EP0452816A2
公开(公告)日:1991-10-23
A synthetic lubricating oil comprising as a base oil at least one kind of a carbonic acid ester selected from the group consisting of:
[I] a carbonic acid ester represented by the general formula (1)
wherein R¹ and R² are each an alkyl or dihydric alcohol residue, R³ is an alkylene, and a is 0 - 30,
[II] a carbonic acid ester represented by the general formula (2)
wherein X¹ is -H or
R⁴-R⁶ are each an alkyl, cycloalkyl or neopentyl type polyol residue, R⁷ is an alkyl, b is 1 or 2, c is 0 or 1 (b + c = 2), d is 0 - 30, and e is 1 - 3, and
[III] a carbonic acid ester of which alcohol moieties are (A) a monohydric alcohol, (B) a dihydric alcohol, and (C) a neopentyl type polyol or dimer or trimer thereof.
一种合成润滑油,其基础油包含至少一种碳酸酯,该碳酸酯选自以下组别: 1:
[I] 由通式(1)表示的碳酸酯
其中 R¹ 和 R² 分别为烷基或二元醇残基,R³ 为亚烷基,a 为 0 - 30、
[II] 由通式(2)代表的碳酸酯
其中 X¹ 是-H 或
R⁴-R⁶各自是烷基、环烷基或新戊基型多元醇残基,R⁷是烷基,b 是 1 或 2,c 是 0 或 1(b + c = 2),d 是 0 - 30,e 是 1 - 3,以及
[III] 碳酸酯,其中醇分子为 (A) 一元醇,(B) 二元醇,和 (C) 新戊基多元醇或其二聚体或三聚体。