COPOLYMERS, INCLUDING ETHYLENE, COMPLEX VINYL ETHERS AND COMPLEX EFFECTS OF PURPOSE (MET) ACRYLIC ACID, THEIR COMPOSITION AND APPLICATION AS DEPRESSANTS OF FLUID POINTS, WIPE INHIBITORS AND CHRONGES IN THE CENTURY OF THE THEME OF CHRONES OF THE THEME OF THE TIME OF THE THEME OF THE TIME OF THE THEME OF THE TIME OF THE AGRE OF CHRISMES OF THE THEME OF THE TIME OF THE THEME OF THE THEME OF THE TIME OF THE THEME OF THE TIME OF THE TIME OF THE TIME OF THE TIME OF THE TIME OF THE TIME OF THE TIME OF AGREEMENT AND IN THE CENTRAL TIME

摘要

Copolymers comprising ethylene, vinyl esters, in particular vinyl acetate, and (meth) acrylic esters selected from esters including branched alkyls, cyclic alkyls or optionally alkyl-substituted aryl groups and having a weight average molecular weight from 35,000 to 150,000 g / mol, the compositions of such copolymers in organic solvents and their use as pour point depressants, wax inhibitors and flow enhancers for crude oils.