| abstract |
The invention belongs to the technical field of synthesis of lubricating oil detergents, and particularly relates to a fluoro-polyester detergent, and further discloses a preparation method thereof and a lubricating oil composition prepared from the fluoro-polyester detergent. The fluorinated polyester type detergent adopts fluorinated compounds as main organic raw materials, so that the high temperature resistance and the carbon deposition resistance of a final product are ensured; meanwhile, the polyester has larger molecular weight, more carboxyl groups and strong dispersing capacity, so that a detergent product with high base number (380-420mgKOH/g), low pour point, excellent high-temperature resistance and more stable performance can be obtained, and the fluoro-polycarboxy polyester salt with larger molecular weight can better form an adsorption film on the metal surface of an engine, thereby providing excellent high-temperature cleaning performance and greatly improving the comprehensive application performance. |