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.

The present disclosure provides a diesel fuel composition containing DMC and multifunctional additives to reduce particulate emission, improve efficiency and be used in cold and/or hypoxia conditions.

The present invention is a polymer having structural units, units of formula I, units of formula II and units of either formula IIIa or formula IIIb:

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The polymer improves the low-temperature properties of fuel oils from petroleum sources and especially from vegetable or animal sources.

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

The invention relates to the use, in a hydrocarbon distillate with a boiling temperature of between 150 and 450 C. and a crystallization onset temperature as measured by Differential Calorimetric Analysis of greater than or equal to 50 C., preferably of 5 C. to +10 C., of a homopolymer obtained from an olefinic ester of carboxylic acid of 3 to 12 carbon atoms and from a fatty alcohol containing a chain of more than 16 carbon atoms and optionally an olefinic double bond, as a compound for revealing the efficiency of filterability additives based on copolymer and/or terpolymers of ethylene and of vinyl ester of a carboxylic acid of 3 to 12 carbon atoms, and of a monoalcohol containing 1 to 10 carbon atoms. The invention is also directed to an additive composition comprising a conventional hydrocarbon filterability additive in combination with an efficiency reveal additive, and also to the combustion fuels, motor fuel and oil fuel that comprise these additive combinations.

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

A polymeric composition suitable for lowering the Pour Point of paraffinic crude oils comprising a synergic mixture including at least two ethylene-vinyl acetate copolymers respectively having an average molecular weight Mw lower than 130,000 Dalton (measured via GPC), a content of vinyl acetate monomer ranging from 15 to 50% by weight, with the proviso that the content of vinyl acetate monomer in the respective copolymers differs from one copolymer to another, by over 5%, on a weight basis.

A polymeric composition suitable for lowering the Pour Point of paraffinic crude oils comprising a synergic mixture including at least two ethylene-vinyl acetate copolymers respectively having an average molecular weight Mw lower than 130,000 Dalton (measured via GPC), a content of vinyl acetate monomer ranging from 15 to 50% by weight, with the proviso that the content of vinyl acetate monomer in the respective copolymers differs from one copolymer to another, by over 5%, on a weight basis.

Copolymers comprising ethylene, vinyl esters, in particular vinyl acetate and esters of (meth)acrylic acid, selected from esters comprising branched alkyl, cyclic alkyl or optionally alkyl substituted aryl moieties and having a weight average molecular weight of 35,000 g/mol to 150,000 g/mol, formulations of such copolymers in organic solvents and their use as pour point depressant, wax inhibitor and flow enhancer for crude oils.