Described herein are associative polymers capable of controlling one or more physical and/or chemical properties of non-polar compositions and related compositions, methods and systems.

This disclosure relates to winterized pour point depressant compositions for petroleum fluids. Such compositions exhibit stability and are flowable at temperatures down to as low as 47 C., without the need for further dilution.

Described herein are associative polymers capable of controlling a physical and/or chemical property of non-polar compositions that can be used when the non-polar composition is in a flow, and related compositions, methods and systems. Associative polymers herein described have a non-polar backbone with a longest span having a molecular weight that remains substantially unchanged under the flow conditions and functional groups presented at ends of the non-polar backbone, with a number of the functional groups presented at the ends of the non-polar backbone formed by associative functional groups capable of undergoing an associative interaction with another associative functional group with an association constant (k) such that the strength of each associative interaction is less than the strength of a covalent bond between atoms and in particular less than the strength of a covalent bond between backbone atoms.

The present application relates to compositions comprising at least one polyalkyl(meth)acrylate polymer, a graft copolymer comprising a copolymer based on ethylene as graft base and one or more polyalkyl(meth)acrylate polymer(s) grafted thereon, and at least one non-grafted ethylene-based copolymer, as well as to the use of such compositions to improve the performance, especially the cold flow properties and injector nozzle coking tendency of middle distillates, especially diesel fuels, biodiesel and blends thereof.

The present invention relates to a novel copolymer, to processes for preparation thereof and to the use thereof.

The use is described of polymers which contain, in copolymerized form, an -olefin, a vinyl ester and an ester of an ,-unsaturated carboxylic acid as an additive for fuel oils and lubricants and in particular as a cold flow improver in fuel oils. In addition, the fuel oils and lubricants additized with these polymers; and also additive packages comprising such polymers are described.

Described herein are associative polymers capable of controlling a physical and/or chemical property of non-polar compositions that can be used when the non-polar composition is in a flow, and related compositions, methods and systems. Associative polymers herein described have a non-polar backbone with a longest span having a molecular weight that remains substantially unchanged under the flow conditions and functional groups presented at ends of the non-polar backbone, with a number of the functional groups presented at the ends of the non-polar backbone formed by associative functional groups capable of undergoing an associative interaction with another associative functional group with an association constant (k) such that the strength of each associative interaction is less than the strength of a covalent bond between atoms and in particular less than the strength of a covalent bond between backbone atoms.

Described herein are associative polymers capable of controlling one or more physical and/or chemical properties of non-polar compositions and related compositions, methods and systems.

The use of at one or more additives to reduce the filter blocking tendency of a fuel composition having a tendency to block filters, wherein the fuel composition comprises a renewable diesel component and a biodiesel component; and wherein the one or more additives are selected from (a) a copolymer comprising units of formula (I):

##STR00001## and units of formula (II):

##STR00002##

wherein R is an alkyl group and each of R.sup.1 and R.sup.2 is an alkyl or alkenyl group having 6 to 22 carbon atoms; (b) the reaction product of a polycarboxylic acid having at least one tertiary amino group and a primary or secondary amine; and (c) the reaction product of secondary amines and a copolymer of maleic anhydride and an -olefin.

A fuel composition including renewable diesel and one or more low temperature enhancing additives selected from (a) a copolymer comprising units of formula (I):

##STR00001##

and units of formula (II):

##STR00002##

In which the R is an alkyl group and each of R.sup.1 and R.sup.2 is an alkyl or alkenyl group having 6 to 22 carbon atoms; (b) the reaction product of a polycarboxylic acid having at least one tertiary amino group and a primary or secondary amine; and (c) the reaction product of secondary amines and a copolymer of maleic anhydride and an -olefin.