Abstract:
The present invention describes a composition comprising at least one antioxidant 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 and oxidation stabilizer in fossil fuel oil and or biodiesel fuel oil.
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 provides a blend of FT derived diesel, crude derived diesel, and CFPP improving additive, wherein the FT diesel is from 1 vol % to 50 vol % of the blend, said blend having a CFPP of below −18° C. The invention extends to use of FT diesel as a blend component for a compression ignition fuel blend, said blend including the FT diesel, a crude derived diesel fuel and a CFPP improver additive, wherein the FT diesel is from 1 vol % to 50 vol % of the blend, which blend has a CFPP of below −20° C.
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 amide and/or imide groups of monomer 2, n1 are the individual chain lengths in the alkyl radicals of monomer 1, n2 are the individual chain lengths in the alkyl radicals of the amide and/or imide groups of monomer 2, i is the serial variable for the individual chain lengths in the alkyl radicals of monomer 1, and j is the serial variable for the individual chain lengths in the alkyl radicals of the amide and/or imide groups of monomer 2.
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 m9=1, w1i, w1j, w2i, w2j . . . wgp are the proportions by weight of the individual chain lengths i, j, . . . p of the alkyl radicals of the different monomers B) 1 to g, and n1i, n1j, n2i, n2j . . . ngp are the chain lengths of the alkyl radicals i, j, . . . p of the monomers B) 1 to g.
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 an additive for improving the flow properties of paraffin-containing mineral oils and mineral oil distillates, comprising a mixture of at least one ethylene/vinyl ester copolymer or terpolymer and at least one paraffin dispersant, wherein said mixture contains ethers and/or esters as solubilizers, wherea) the ethers conform to the formula 1R--O--R' (1) in which R is a linear or branched alkyl or alkenyl group having 4 to 30 carbon atoms, and R' is a linear or branched alkyl or alkenyl group having 1 to 30 carbon atoms,b) the esters are derived from monobasic or polybasic carboxylic acids having 4 to 30 carbon atoms (acid radical) and from monohydric or polyhydric alcohols having 1 to 30 carbon atoms (alcohol radical), orc) the ethers and/or esters are cyclic, with a ring size of from 6 to 30 carbon atoms.The invention furthermore relates to a process for improving the flow properties of mineral oils and mineral oil distillates which comprises adding the novel additive thereto.
Abstract:
The lubricity of low sulphur fuels is enhanced by incorporation of a lubricity enhancing additive in combination with a polyoxyalkylene compound.
Abstract:
Improving the flowability of mineral oils and mineral oil distillates using alkylphenol-aldehyde resinsThe invention relates to a process for improving the flowability of paraffin-containing mineral oils and mineral oil distillates by adding flow improvers based on ethylene/vinyl ester co- and terpolymers, alkylphenol-aldehyde resins and, if appropriate, other paraffin dispersants, mixtures of these different flow improvers and mineral oils and mineral oil distillates which comprise these flow improvers.