Paraffin dispersants for crude oil middle distillates

摘要

PCT No. PCT/EP97/02781 Sec. 371 Date Nov. 30, 1998 Sec. 102(e) Date Nov. 30, 1998 PCT Filed May 28, 1997 PCT Pub. No. WO97/46640 PCT Pub. Date Dec. 11, 1997A mixture contains (a) from 10 to 90% by weight of at least one imide of a copolymer based on an alpha -olefin and an ethylenically unsaturated dicarboxylic acid and a polyamine and (b) from 10 to 90% by weight of at least one reaction product of a poly(C2-C20-carboxylic acid) having a tertiary amino group with secondary amines and is used as a paraffin dispersant in mineral oil middle distillates.