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.

The invention provides dispersions comprising I) at least one oil-soluble polymer effective as a cold flow improver for mineral oils, II) at least one organic, water-immiscible solvent, III) a dispersant comprising, based on the total amount of dispersant, a) 10-90% by weight of a salt of an ethercarboxylic acid and b) 90-10% by weight of a nonionic surfactant, IV) water and V) at least one organic, water-miscible solvent.

The invention provides dispersions comprising I) at least one oil-soluble polymer effective as a cold flow improver for mineral oils, II) at least one organic, water-immiscible solvent, III) a dispersant comprising, based on the total amount of dispersant, a) 10-90% by weight of a salt of an ethercarboxylic acid and b) 90-10% by weight of a nonionic surfactant, IV) water and V) at least one organic, water-miscible solvent.

The present invention relates to novel uses of corrosion inhibitors in fuels and lubricants.

An additive composition containing a polymer (A) and an anti-static additive (B). The polymer (A) has the following monomer components: (i) one or more compounds of formula (I) ##STR00001##
wherein R.sub.1 is hydrogen or CH.sub.3; and R.sub.2 is a hydrocarbon group having 6 to 30 carbon atoms and is a straight-chain or branched-chain alkyl group, or an aliphatic or aromatic cyclic group;
(ii) one or more compounds of formula (II) ##STR00002##
wherein R.sub.1 has the meaning above and wherein R.sub.3 is hydrogen or C.sub.1-C.sub.22 alkyl; each R.sub.4 is independently hydrogen or C.sub.1-C.sub.22 alkyl; R.sub.5 is hydrogen, a substituted or unsubstituted aliphatic or aromatic cyclic group, or a substituted or unsubstituted straight-chain or branched-chain alkyl group having 1 to 22 carbon atoms; n=0 or an integer from 1 to 22; and m is an integer from 1 to 30; and
(iii) one or more compounds of formula (III) ##STR00003##
wherein R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 are each independently hydrogen, a straight-chain or branched-chain alkyl group having 1 to 20 carbon atoms which may be substituted or unsubstituted, hydroxyl, NH.sub.2, or wherein two or more of R.sub.6, R.sub.7, R.sub.8, R.sub.9 and R.sub.10 may together form an aliphatic or aromatic ring system, which ring system may be substituted or unsubstituted. The anti-static additive (B) is (iv) an olefin polysulfone and (v) a polymeric polyamine reaction product of epichlorohydrin and an aliphatic primary monoamine or an N-aliphatic hydrocarbyl alkylene diamine, or the sulfonic acid salt of the polymeric polyamine reaction product. The weight:weight ratio of the polymer (A) to the anti-static additive (B) in the additive composition is from about 1:1 to about 500:1.

An additive composition comprises a polymer (A) and a condensation product (B) wherein Polymer (A) comprises the following monomer components: (i) one or more compounds of formula (I) (ii) one or more compounds of formula (II); and (iii) one or more compounds of formula (III); wherein condensation product (B) comprises the product formed by the reaction of an aliphatic aldehyde or ketone, or a reactive equivalent, with a substituted phenol or mixture of substituted phenols; The weight:weight ratio of the polymer (A) to the condensation product (B) is from 1:20 to 20:1.

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 present invention relates to novel uses of corrosion inhibitors in fuels and lubricants.

The present technology is related to amide or ester containing quaternary ammonium salts having a hydrocarbyl substituent of number average molecular weight less 300, and additive packages having such quaternary ammonium salts and improved stability.