FUEL OIL ADDITIVE FOR IMPROVING COLD FLOW PERFORMANCE OF MIDDLE DISTILLATE, MIDDLE DISTILLATE COMPRISING THE SAME, AND USE OF FUEL ADDITIVE FOR IMPROVING COLD FLOW PROPERTIES OF MIDDLE DISTILLATE

摘要

PURPOSE: To provide an additive comprising a block copolymer and a derivative of fatty amine for improving the cold flow performance of middle distillates, a middle distillate comprising the additive, and the use of the additive for improving the cold flow performance of middle distillates. CONSTITUTION: The additive comprises at least one paraffin dispersant which is a derivative of a fatty amine, at least one block copolymer having a structure of either (AB)nA or (AB)m, where A represents blocks consisting of olefinically unsaturated aromatic monomers, and B represents blocks which consist of structural elements based on polyolefins and are capable of cocrystallizing with paraffins precipitating out of the middle distillates in the course of cooling, and n ranges from 1 to 10 and m ranges from 2 to 10.