Abstract: There is disclosed an antifoam component which includes at least one acrylamide polymer for use in a diesel fuel. Acrylamide polymers prepared by polymerizing a (meth)acrylamide monomer to yield a homopolymer or, alternatively, the acrylamide polymer may be prepared by polymerizing a (meth)acrylamide monomer and a (meth)acrylate monomer to yield a heteropolymer.

Abstract: 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.

Abstract: To provide is a lubricating oil composition capable of exerting an improved fuel-saving performance and having an improved shear stability. The lubricating oil composition comprises (A) a mineral base oil having kinematic viscosity at 100° C. of no more than 5 mm2/s and % CP of no less than 90; and (B) a polymer having weight average molecular weight of no more than 15000.

Abstract: The invention provides terpolymers of ethylene, at least one ethylenically unsaturated ester and propene, which a) contain from 12.0 to 16.0 mol % of structural units derived from at least one ethylenically unsaturated ester, b) contain from 1.0 to 4.0 methyl groups derived from propene per 100 aliphatic carbon atoms, and c) have fewer than 6.5 methyl groups stemming from chain ends per 100 CH2 groups. and also their use as cold additives for middle distillates.

Abstract: The invention provides additive mixtures comprising A) at least one terpolymer of ethylene, propene and at least one ethylenically unsaturated ester, which i) contains from 6.0 to 12.0 mol % of structural units derived from at least one ethylenically unsaturated ester having a C1- to C3-alkyl radical, ii) contains from 0.5 to 4.0 methyl groups derived from propene per 100 aliphatic carbon atoms, iii) has fewer than 8.0 methyl groups stemming from chain ends per 100 CH2 groups, and B) from 0.5 to 20 parts by weight, based on A), of at least one further component which is effective as a cold additive for mineral oils and is selected from B1) copolymers of ethylene and ethylenically unsaturated compounds whose content of ethylenically unsaturated compounds is at least 2 mol % higher than the content of ethylenically unsaturated esters in the terpolymer defined under A), B2) comb polymers, and B3) mixtures of B1) and B2), and also their use as a cold additive for middle distillates.

Abstract: The invention thus provides terpolymers of ethylene, at least one ethylenically unsaturated ester and propene, which have i) from 4.0 to 12.0 mol % of structural units derived from at least one ethylenically unsaturated ester having a C4- to C20-alkyl radical, ii) from 0.5 to 4.0 methyl groups derived from propene per 100 aliphatic carbon atoms, and iii) fewer than 8.0 methyl groups stemming from chain ends per 100 CH2 groups.

Abstract: Quaternized terpolymer formed from (A) ethylene, (B) C2-C14-alkenyl esters of one or more aliphatic C1-C20-monocarboxylic acids or C1-C24-alkyl esters of acrylic acid or of methacrylic acid and (Cq) ethylenically unsaturated monomers which comprise at least one tertiary nitrogen atom which is partly or fully in quaternized form. The quaternized terpolymer is suitable as a fuel additive for reducing or preventing deposits, for reducing fuel consumption and for minimizing power loss in direct-injection diesel engines, especially in diesel engines with common-rail injection systems.

Abstract: The invention relates to the use of at least one oil-soluble compound B) which acts as a nucleating agent for paraffin crystallization and which is selected from ethylene copolymers and 2 to 10.5 mole % of at least one ethylenically unsaturated carbonic ester for improving the response of cold flow improvers for mineral oils C), which are different from B), in middle distillates that contain at least one ashless, nitrogenous detergent additive A), which is an oil-soluble, amphiphilic compound that comprises at least one alkyl or alkenyl group bound to a polar group, said alkyl or alkenyl group having 10 to 500 C atoms and the polar group having 2 or more nitrogen atoms.

Abstract: The present invention describes a composition comprising at least one polyalkyl(meth)acrylate polymer having a number average molecular weight Mn of from 1000 to 10000 g/mol and a polydispersity Mw/Mn of from 1 to 8 and at least one ethylene vinyl acetate copolymer comprising units being derived from at least one alkyl (meth)acrylate having 1 to 30 carbon atoms in the alkyl residue. The composition is useful as cold flow improver in fossil fuel oil and or biodiesel fuel oil.

Abstract: The invention provides a fuel oil composition comprising a fuel oil of mineral origin and a fuel oil of vegetable and/or animal origin and as a cold additive, the constituents, at least one copolymer composed of ethylene and 8-21 mol % of at least one acrylic and vinyl ester having a C1-C18 alkyl radical and at least one comb polymer containing structural units composed of at least one olefin as monomer 1 which bears at least one C8-C18 alkyl radical on the olefinic double bond, and at least one ethylenically unsaturated dicarboxylic acid as monomer 2 which bears at least one C8-C16 alkyl radical bonded via an amide and/or imide moiety.

Abstract: The invention relates to fuel oils comprising a larger proportion of middle distillates having a sulfur content of at most 350 ppm and an aromatics content of at most 22% by weight, and also a smaller proportion of at least one copolymer of ethylene and vinyl esters, said copolymer containing a) bivalent structural units derived from ethylene of the formula 1 —CH2—CH2—??(1) b) from 5 to 12 mol % of bivalent structural units of the formula 2 where R1 is saturated, branched C5-C18-alkyl, and c) from 4 to 13 mol % of bivalent structural units of the formula 3 and the sum of the molar proportions of structural units of the formulae 2 and 3 being between 12 and 16 mol %, to the corresponding polymers, and also to their use for improving the cold flow behavior of middle distillates having a sulfur content of at most 350 ppm and an aromatics content of at most 22% by weight.

Abstract: 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.

Abstract: The present invention provides an additive comprising A) a copolymer of ethylene and 8-21 mol % of at least one acrylic or vinyl ester having a C1-C18-alkyl radical and B) a comb polymer containing structural units of B1) at least one olefin as monomer 1, which bears at least one C8-C18-alkyl radical on the olefinic double bond, and B2) at least one ethylenically unsaturated dicarboxylic acid as monomer 2, which bears at least one C8-C16-alkyl radical bonded via an amide and/or imide moiety, wherein the sum Q Q = ? i ? w 1 ? i · n 1 ? i + ? j ? w 2 ? j · n 2 ? j of the molar averages of the carbon chain length distributions in the alkyl radicals of monomer 1 on the one hand and the alkyl radicals of the amide and/or imide groups of monomer 2 on the other hand is from 23 to 27, where w1 is the molar proportion of the individual chain lengths in the alkyl radicals of monomer 1, w2 is the molar proportion of the individual chain lengths in the alkyl radicals of the am

Abstract: The invention provides a fuel oil composition comprising a fuel oil of animal or vegetable origin and an additive comprising A) at least one copolymer of ethylene and 8-21 mol % of at least one acrylic or vinyl ester having a C1-C18-alkyl radical and B) at least one comb polymer containing structural units having C8-C16-alkyl radicals, the structural units being selected from C8-C16-alkyl (meth)acrylates, C8-C16-alkyl vinyl esters, C8-C16-alkyl vinyl ethers, C8-C16-alkyl (meth)acrylamides, C8-C16-alkyl allyl ethers and C8-C16-diketenes, where the sum R R = m 1 · ? i ? w 1 ? i · n 1 ? i + m 2 · ? j ? w 2 ? j · n 2 ? j + … + m g · ? p ? w gp · n gp is the molar average of the carbon chain length distributions in the alkyl radicals of the monomers B) is from 11.0 to 14.0, where m1, m2, . . . mg are the molar fractions of the abovementioned monomers B) in the polymer and the sum of the molar fractions m1 to mg=1, w1i, w1j . . . w2i, w2j . .

Abstract: The invention provides a fuel oil composition F) comprising F1) a fuel oil of mineral origin and F2) a fuel oil of vegetable and/or animal origin, and, as a cold additive, the constituents A) at least one copolymer composed of ethylene and 8-21 mol % of at least one acrylic or vinyl ester having a C1-C18-alkyl radical and B) at least one comb polymer containing structural units having C8-C16-alkyl radicals, the structural units being selected from C8-C16-alkyl (meth)acrylates, C8-C16-alkyl vinyl esters, C8-C16-alkyl vinyl ethers, C8-C16-alkyl(meth)acrylamides, C8-C16-alkyl allyl ethers and C8-C16-diketenes, where the sum R R = m 1 · ? i ? w 1 ? i · n 1 ? i + m 2 · ? j ? w 2 ? j · n 2 ? j + … + m g · ? p ? w gp · n gp of the molar averages of the carbon chain length distributions in the alkyl radicals of the monomers B) is from 11.0 to 14.0, where m1, m2, . . .

Abstract: The present invention relates to an additive for improving the lubrication capacity of fuel oils with a maximum sulfur content of 0.035 wt. %. The additive contains at least one ester of a bivalent or polyvalent alcohol and a mixture of unsaturated and optionally saturated fatty acids, whose carbon chain lengths are between 8 and 30 carbon atoms, the aforementioned esters having an OH value of less than 200 mg KOH/g ester and an iodine value greater than 100 g l/100 g ester. The invention also relates to fuel oils with a maximum sulfur content of 0.035 wt. %, which contain the inventive additives. The novel additives exhibit less tendency to emulsify than the additives of the prior art.

Abstract: A fuel oil comprising: A) a mineral oil having a cloud point of less than ?8° C., a boiling range (90-20%) of less than 120° C. and a difference between CFPP and PP of less than 10° C., and B) one or more copolymers, wherein the copolymers comprise: a) bivalent structural unit (B1), wherein (B1) is a bivalent structural unit of formula (1) —CH2—CH2—??(1) and b) one or more bivalent structural units (B2), wherein (B2) is either a bivalent structural unit of formula (2) —CH2—CR1R2—??(2) ?in which R1 is hydrogen or methyl, R2 is COOR3, OR3 or OCOR3, and R3 is an alkyl radical having at least 4 and at most 30 carbon atoms, or (B2) is a bivalent structural unit of formula (2a) ?in which R3 is an alkyl radical having at least 4 and at most 30 carbon atoms.

Abstract: The invention relates to fuel oils comprising a larger proportion of middle distillates having a sulfur content of at most 350 ppm and an aromatics content of at most 22% by weight, and also a smaller proportion of at least one copolymer of ethylene and vinyl esters, said copolymer containing

Abstract: Additive compositions comprising: (i) at least one oil-soluble hydrogenated block diene polymer, comprising at least one crystallizable block, obtainable by end-to-end polymerization of a linear diene, and at least one non-crystallizable block, the non-crystallizable block being obtainable by 1,2-configuration polymerization of a linear diene, by polymerization of a branched diene, or by a mixture of such polymerizations, (ii) at least one ethylene-unsaturated ester compound; and (iii) at least one comb polymer. The additive compositions are used to improve cold flow characteristics in fuel oils. The additive compositions are particularly effective in fuel oils having a 90-20% boiling temperature range, as measured in accordance with ASTM D-86, of more than 115° C., preferably more than 120° C., more preferably more than 130° C., and most preferably more than 140° C., and a final boiling point of more than 370° C., preferably more than 380° C.

Abstract: Jet fuel compositions having good low temperature operability.

Abstract: Improved fuel additives and distillate fuels containing said additives are described. The additives impart improved low temperature flow and filterability and also impart stability to distillate fuels, particularly hard-to-treat distillate fuels. The additives are a combination of an olefin/vinyl carboxylate polymer and two specific polyimides having different alkyl substituents.

Abstract: A macromolecular cold flow improver in which a crystalline moiety and an oil-solubility enhancing moiety are linked by a functional group.

Abstract: Compositions comprising an ethylene/vinyl acetate or propionate/vinyl branched carboxylate terpolymer improve the low temperature properties of fuel oils.

Abstract: A composition comprising a hydrogenated block diene polymer and saturated hydrocarbon mixture as a cold flow improver in an oil.

Abstract: An additive combination for distillate fuels and a fuel composition having improved cold flow properties. The additive combination is incorporated into a major proportion of distillate fuel and is comprised of an ethylene vinyl acetate isobutylene terpolymer in combination with one or more of a maleic anhydride &agr;-olefin copolymer component, a polyimide component, and an alkyl phenol component each having one or more hydrocarbon substituents within specified carbon number ranges. Optionally, an ethylene vinyl acetate copolymer may also be incorporated as a component therein.

Abstract: Compositions comprising an ethylene/vinyl acetate or propionate/vinyl linear carboxylate terpolymer improve the low temperature properties of oils having wax contents of at least 3% wt.

Abstract: A process for improving the cold flow properties of fuel oils comprising the addition to fuel oil of an additive comprising copolymers of lower olefins and vinyl esters and a terpolymer of 4-methylpentene-1 and an additive composition comprising copolymers of lower olefins and vinyl esters and a terpolymer of 4-methylpentene-1.

Abstract: The invention relates to a process for improving the cold-flow properties of oils having a sulfur content of less than 500 ppm and a content of n-paraffins having a chain length of C.sub.18 or longer of at least 8% by weight, comprising adding an additive comprising a mixture of A) from 15 to 50% by weight of a copolymer comprising, besides from 87 to 92 mol % of structural units derived from ethylene;a) from 6.5 to 12 mol % of structural units derived from vinyl acetate andb) from 0.5 to 6 mol % of structural units derived from 4-methyl-1-pentene, with the proviso that the sum of the molar proportions of structural units a) and b) is from 8 to 14 mol %, and B) from 85 to 50% by weight of at least one further copolymer or terpolymer of ethylene and vinyl esters or acrylates which is per se a cold-flow improver.The invention furthermore relates to an additive for improving the cold-flow behavior of mineral oils and mineral-oil distillates, and to fuel oil compositions containing these additives.

Abstract: The low temperature flow properties of wax-containing liquids are improved by adding a composition comprising (i) a polymer of a C.sub.8-20 alkyl ester of an ethyleneically unsaturated 1,2-diacid, and (ii) the reaction product of an alkanolamine with a C.sub.8-50 hydrocarbyl-substituted acylating agent.

Abstract: A fuel oil composition comprising: (A) a major proportion of a middle distillate petroleum fuel having a wax content of less than 2 wt % at 10.degree. C. below the wax appearance point of the fuel, and either: (i) a final boiling point of greater than 355.degree. C. and either a (90-20%) distillation range of greater than 115 .degree. C. or a (FBP-90%) distillation range of 30.degree. C. or greater; or (ii) a final boiling point of greater than 360.degree. C. and either a (90-20%) distillation range of greater than 110.degree. C. or a (FBP-90%) distillation range of 25.degree. C. or greater; or (iii) a final boiling point of greater than 370.degree. C. and either a (90-20%) distillation range of greater than 100.degree. C. or a (FBP-90%) distillation range of 250.degree. C.

Abstract: A two-cycle oil composition comprising: (a) 10-20% of a first synthetic ester base stock oil (a copolymer of an alpha-olefin with an ester of a dicarboxylic acid, viscosity 20 to 50 cSt at 100.degree. C.); (b) 18-30% of a second synthetic ester base stock oil (an oxo alcohol of a dicarboxylic acid, viscosity 3 to 10 cSt at 100.degree. C.; (c) 30-40% of a polybutene polymer (Mn 300-1500); (d) 15-25% of a nor liquid solvent (boiling point up to 300.degree. C., flash point of 60 .degree.-120.degree. C.); (e) 0.2 to 2.0% of an oil soluble copper compound, and (f) 0 to 5% of other lubricating oil additives.

Abstract: Additive compositions comprising an ethylene/vinyl acetate or propionate/vinyl branched carboxylate terpolymer and an ethylene-unsaturated ester copolymer improve the low temperature properties of fuel oils.

Abstract: Adding to a fuel oil a composition of from about 1 to about 40 parts by weight ethylene/vinyl acetate copolymer having a vinyl acetate content of from about 10% by weight to about 50% by weight and a weight average molecular weight of from about 2,000 to about 10,000, and 1 part by weight esterified copolymer of at least one generally linear .alpha.-olefin of from about 18 to about 50 carbon atoms and maleic anhydride in an .alpha.-olefin to maleic anhydride molar ratio of from about 4:1 to about 1:2, the copolymer having a weight average molecular weight of from about 2,000 to about 20,000, the esterified copolymer having been esterified with a plurality of aliphatic alcohols having from about four to about forty carbon atoms, imparts to the fuel oil surprisingly improved low temperature fluidity, provided that the alcohols include an eight carbon alcohol making up from about 50 to about 85 molar percent of the alcohols.

Abstract: Adding to a fuel oil a composition of from about 1 to about 40 parts by weight ethylene/vinyl acetate copolymer having a vinyl acetate content of from about 10% by weight to about 50% by weight and a weight average molecular weight of from about 2,000 to about 10,000, and 1 part by weight esterified copolymer of at least one generally linear .alpha.-olefin of from about 18 to about 50 carbon atoms and maleic anhydride in an .alpha.-olefin to maleic anhydride molar ratio of from about 4:1 to about 1:2, the copolymer having a weight average molecular weight of from about 2,000 to about 20,000, the esterified copolymer having been esterified with a plurality of aliphatic alcohols having from about four to about forty carbon atoms, imparts to the fuel oil surprisingly improved low temperature fluidity, provided that the alcohols include an eight carbon alcohol making up from about 50 to about 85 molar percent of the alcohols.

Abstract: The low temperature properties of a blend of biofuel and petroleum-based fuel oil are improved by the addition of an ethylene-unsaturated ester copolymer, or a comb polymer, or a polar N compound, or a compound having at least one linear alkyl groups connected to a non-polymeric organic residue.

Abstract: Compositions comprising two or more ethylene-unsaturated ester copolymers differing in their ester proportions improve the low temperature properties of fuel oils.

Abstract: The present invention improves the low temperature flow property of a fuel oil having a boiling point of 120.degree.-150.degree. C. by adding a novel compound prepared by reacting pri-, sec- or tert-aliphatic amine containing alkyl group of 1-30 carbon atoms with 9,10-dihydroanthracene-9,10-endo-.alpha.,.beta.-succinic acid or anhydride thereof together with a polymer having ethylene structure and/or a terpolymer of dialkyl fumarate-vinyl ester-vinyl ether.

Abstract: Additives for distillate fuel are a copolymer of (1) an alpha olefin having two to seventeen carbon atoms per molecule or an aromatic substituted olefin having eight to forty carbon atoms per molecule and (2) a mono- or di-alkyl fumarate, itaconate, citraconate, mesaconate, trans- or cis-glutaconate, in which the alkyl group has 8 to 23 carbon atoms.

Abstract: Polymer of number average molecular weight 1,000 to 20,000 containing the repeating units (I) (II) or (III) (II) have been found useful as low temperature flow improvers for distillate fuels particularly in combination with other additives.

Abstract: Copolymers of straight chain alpha olefins and maleic anhydride esterified with an alcohol wherein the alpha olefin is of the formula:R.CH=CH.sub.2and the alcohol is of the formula:R.sup.1 OHin which at least one of R and R.sup.1 is greater than 10 and the sum of R and R.sup.1 is from 18 to 38 and R.sup.1 is linear or contains a methyl branch at the 1 or 2 position have been found to be effective additives for improving the low temperature properties of distillate fuels.

Abstract: The cold flow properties of distillate petroleum fuel are improved by adding a polymer or copolymer containing at least 25 wt. % of an n-alkyl ester of the general formula ##STR1## wherein R.sub.1 and R.sub.2 are hydrogen or a C.sub.1 alkyl group, e.g., methyl, R.sub.4 is COOR.sub.3, hydrogen or a C.sub.1 to C.sub.4 alkyl group preferably COOR.sub.3 and R.sub.3 has an average number of carbon atoms from 12 to 20 and contains a methyl branch at the 1 and/or 2 position.

Abstract: Terpolymers obtained by polymerizing a mixture of ethylene, vinyl acetate, and isobutyl vinyl ether, a process for their preparation, and methods of their use as additives for mineral oil distillates.

Abstract: Polyalkyl acrylates and methacrylates, suitable for improvement of the viscosity index, are used as oil additives imparting improved dispersant and detergent effects in diesel and gasoline engines, said polyalkyl acrylates or methacrylates being copolymers comprising from 80 to 99.5 parts by weight of alkyl acrylates of methacrylates of the formula ##STR1## wherein R is hydrogen or methyl and R.sub.1 is alkyl having from 6 to 24, and preferably from 8 to 20, carbon atoms, together with from 0.5 to 20 parts by weight of at least one functionalized alkyl methacrylate of the formula ##STR2## wherein R.sup.1 is hydrogen or methyl and R.sub.2 is alkyl having from 2 to 6 carbon atoms and substituted with at least one OH group, or is a polyalkoxylated group of the formula ##STR3## wherein R.sub.3 and R.sub.4 are hydrogen or methyl, R.sub.