Abstract:
A fuel oil composition comprising a major amount of fuel oil and a polymeric additive of Mn 1,000 to less than 3,000. The polymeric additive comprises the condensation reaction product of an aliphatic aldehyde having 1 to 4 carbon atoms and a mixture of alkylphenols comprising a major amount of a monoalkylphenol with more than 10 to less than 35 mole % of a dialkylphenol. The alkyl groups of the phenol have 1 to 20 carbon atoms. The polymeric additive is useful for improving the low temperature flow properties of a fuel oil.
Abstract:
An additive for low-sulfur mineral oil distillates having improved cold flowability and paraffin dispersancy, comprising at least one ester of an alkoxylated polyol and at least one polar nitrogen-containing paraffin dispersant.
Abstract:
The invention relates to additives for improving the flowability of mineral oils, containing: A) 1-40 wt. % of at least one copolymer, which is oil-soluble and improves the cold flow properties of mineral oil, selected from A1) copolymers consisting of 80 to 96.5 mol % ethylene and 3.5-20 mol % vinyl esters of carboxylic acids with 1-20 C atoms and/or (meth)acrylic acid esters of alcohols with 1-8 C atoms, and A2) homopolymers or copolymers of esters, containing C10-C30 alkyl radicals, of ethylenically unsaturated carboxylic acids with up to 20 mol % of other olefinically unsaturated compounds, B) 20-80 wt. % of at least one poly-alpha-olefin with a molecular weight of 250-5000, derived from monoolefins with 3-5 C atoms, and C) 5-70 wt. % of at least one organic acid selected from C1) alkylphenol-aldehyde resins of formula (1), wherein R1 and R2 independently designate H or alkyl radicals with 1-30 C atoms, but both radicals do not at the same time signify H, n represents an integer of 3-50, and R3 represents H or an alkyl radical with 1-4 C atoms, and C2) aliphatic and/or aromatic sulfonic acids of formula R18—SO3H, wherein R18 stands for C6-C40-alkyl, C6-C40-alkenyl, or an alk(en)yl aryl radical which has 1, 2, 3 or 4 aromatic rings and 1, 2, 3 or 4 alkyl or aryl radicals with respectively 6-40 C-atoms.
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 of at least one C8-C16-alkyl ester of an ethylenically unsaturated dicarboxylic acid and at least one C10-C20-olefin, wherein the sum Q 1 Q = null i null null w 1 null i null n 1 null i + null j null null w 2 null j null n 2 null j of the averages by weight of the carbon chain distributions in the alkyl side chains of the olefins on the one hand and the fatty alcohols on the other hand is from 23 to 27, where w1 and w2 are the weight proportions of the individual chain lengths in the different monomers 1 and 2, and n1 and n2 are the side chain lengths, in the case of olefins without the originally olefinically bonded carbon atoms, of the individual species, and the running variables i and j are the individual side chain lengths in the particular monomer groups.
Abstract:
The invention relates to additives for improving cold-flow and lubricating properties of fuel oils, comprising A) 5-95% by weight of at least one oil-soluble amphiphile of the formula in which R1 is an alkyl, alkenyl, hydroxyalkyl or aromatic radical having 1 to 50 carbon atoms, X is NH, NR3, O or S, y is 1, 2, 3 or 4, R2 is hydrogen or an alkyl radical carrying hydroxyl groups and having 2 to 10 carbon atoms and R3 is an alkyl radical carrying nitrogen and/or hydroxyl groups and having 2 to 10 carbon atoms or C1-C20-alkyl, and B) 5 to 95% by weight of a terpolymer containing from 10 to 35 mol % of structural units derived from the vinyl ester of a carboxylic acid having 2 to 4 carbon atoms, from 1 to 15 mol % of structural units derived from the vinyl ester of a neocarboxylic acid having 8 to 15 carbon atoms, and structural units of ethylene to 100 mol %, having a melt viscosity, measured at 140° C., of from 20 to 10,000 mPas.
Abstract:
The operation of marine diesel engines is improved through use of a defined fuel composition, containing one or more additives comprising a methal detergent, a non-metal detergent or both. The fuel is supplied to Diesel engines which operate in a maximum speed range of 1000 rpm (4-stroke engine) respectively 2500 rpm (2-stroke engine). The power output is greater than 200 bph. The cylinder bore is greater than 100 mm (2-stroke engine) while the piston stroke shall be greater than 150 mm (4-stroke engine) respectively greater than 120 mm (2-stroke engine). The metal containing detergent is a neutral calcium sulfonate, salicylate or calcium phenate. The non-metal containing detergent is a hydrocarbyl succinimide.
Abstract:
The invention relates to additives for improving cold-flow and lubricating properties of fuel oils, comprising A) 5-95% by weight of at least one oil-soluble amphiphile of the formulae in which R1 is an alkyl, alkenyl, hydroxyalkyl or aromatic radical having 1 to 50 carbon atoms, X is NH, NR3, O or S, y is 1, 2, 3 or 4, R2 is an alkyl radical carrying hydroxyl groups and having 2 to 10 carbon atoms and R3 is an alkyl radical carrying nitrogen and/or hydroxyl groups and having 2 to 10 carbon atoms or a C1-C20-alkyl radical, and B) 5 to 95% by weight of a terpolymer of ethylene, the vinyl ester of one or more aliphatic, linear or branched monocarboxylic acids which contain 2 to 20 carbon atoms in the molecule and a C5-C7-olefin containing from 9 to 18 mol % of vinyl ester and from 0.5 to 5 mol % of olefin (based in each case on the terpolymer), having a melt viscosity, measured at 140° C., of from 20 to 10,000 mPas.
Abstract:
The invention relates to low-temperature-stabilized additives for fuel oils having a sulfur content of up 0.05% by weight, comprising fatty acid mixtures of A1) from 1 to 99% by weight of at least one saturated mono- or dicarboxylic acid having from 6 to 50 carbon atoms, A2) from 1 to 99% by weight of at least one unsaturated mono- or dicarboxylic acid having from 6 to 50 carbon atoms, and B) at least one polar nitrogen-containing compound which is effective as paraffin dispersant in middle distillates, in an amount of from 0.01 to 90% by weight, based on the total weight of A1), A2) and B), and to the use of said mixtures for improving the lubrication properties of low-sulfur middle distillates.