USING COMB POLYMERS TO REDUCE FUEL CONSUMPTION Russian patent published in 2013 - IPC C08F290/04 C08F255/06 C10M145/14 

FIELD: chemistry.

SUBSTANCE: described is a comb polymer which contains in the backbone chain repeating units derived from polyolefin-based macromonomers and repeating units derived from low molecular weight monomers selected from a group consisting of: styrene monomers having 8-17 carbon atoms, alkyl (meth)acrylates having 1-10 carbon atoms in the alcohol group, as well as mixtures of said monomers, wherein in total, the comb polymer contains at least 80 wt % (with respect to the weight of all repeating units) repeating units which are derived from polyolefin-based macromonomers and repeating units which are derived from low molecular weight monomers, selected from a group consisting of styrene monomers having 8-17 carbon atoms, alkyl (meth)acrylates having 1-10 carbon atoms in the alcohol group, as well as mixtures of said monomers, characterised by that the comb polymer contains 8-30 wt % repeating units with respect to total weight of repeating units derived from polyolefin-based macromonomers, and molar degree of branching of the comb polymer is in the range of 0.3 to 1.1 mol % and repeating units derived from polyolefin-based macromonomers include groups which are derived from monomers selected from a group consisting of alkenes with 2-10 carbon atoms and/or alkadienes with 4-10 carbon atoms. Described also is a method of producing said comb polymer, a lubricant oil formulation containing said comb polymer. Use of said comb polymer to reduce car fuel consumption is also described.

EFFECT: reduced fuel consumption.

24 cl, 8 tbl, 6 ex