The synthesis of double tail surfactants having crown ethers as polar heads was performed by reacting di‐F‐alkyl mercaptosuccinate on cyclic polyethylene glycol maleates. Surface tension and critical micelle concentration (CMC) were determined for these new surfactants. According to CMC values, the solubility in water is higher with perfluoroalkyl surfactants having a bigger loop size and shorter hydrophobic
ADDITIVE FOR LUBRICATING OIL AND FUEL OIL, LUBRICATING OIL COMPOSITION, AND FUEL OIL COMPOSITION
申请人:SHIMIZU Nobuaki
公开号:US20090292137A1
公开(公告)日:2009-11-26
Processes for producing disulfide compounds that are useful as additives for lubricating oils and fuel oils comprising a disulfide compound, as the main component, is provided.