Abstract:
Cold-stabilized additive (A) for fuel oils with 0.05 wt.% of sulfur content comprises fatty acid mixture of 6-50C saturated mono- or dicarboxylic acid (1-99 wt.%), 6-50C unsaturated mono- or dicarboxylic acid (1-99 wt.%) and at least a polar nitrogen-containing compound (0.01-90 wt.%) as a paraffin dispersant in an average distillate. Cold-stabilized additive (A) for fuel oils with 0.05 wt.% of sulfur content comprises fatty acid mixture of 6-50C saturated mono- or dicarboxylic acid (1-99 wt.%), 6-50C unsaturated mono- or dicarboxylic acid (1-99 wt.%) and at least a polar nitrogen-containing compound (0.01-90 wt.%) such as amide and/or ammonium salts of aminoalkylene polycarboxylic acid with secondary amines (I) and (II) of formulae ((R6>)(R7>)N-CO-CH2))2N-R10>-N(CH2-CO-N(R6>)(R7>))2 and N((CH2-CO-N(R6>)(R7>))3 respectively, as paraffin dispersant in an average distillate. R10>2-6C alkylene or organic remainder of formula -(CH2)2-N(CH2-COON-(R6>)(R7>))-(CH2)2-; R6>,R7>8-36C-alkyl, 6-36C-cycloalkyl or 8-36C-alkenyl and the remaining groups are H, 1-36C-alkyl, 2-36C-alkenyl, 6-36C cycloalkyl, cyclohexyl or a group of formula -(A-O)x-E or -(CH2)n-NY1>Z; A : ethylene or propylene; E : H, 1-30C-alkyl, 5-12C-cycloalkyl or 6-30C-aryl; Y1>, Z : H, 1-30C-alkyl or -(A-O)x; x : 1-50; and n : 2-4. Where the amide exhibits partially or completely in the form of ammonium salt of formula ((R6>)(R7>)NH2+> COO->). Independent claims are included for: (1) a cold-stabilized solution of (A) in organic solvents, where the solution contains 1-80 wt.% of the solvent; (2) a cold-stabilized fatty acid mixture containing (A); and (3) a fuel oil comprising an average distillate with 0.05 wt.% of sulfur content and (A).
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel oil containing a middle distillate and a fatty acid ester, having a CFPP (cold filter plugging point) value of ≤ -20°C, and having improved low-temperature characteristics. SOLUTION: A fuel oil composition (F) contains (F1) a fuel oil originated from a mineral, (F2) a fuel oil originated from a plant and/or an animal, and components (A) and (B) as low-temperature additives, wherein the component (A) comprises at least one kind of copolymer which is formed out of ethylene and 8-21 mol% of at least one kind of acrylic acid ester or vinyl ester having a 1-18C alkyl residue, the component (B) comprises at least one kind of comb-shaped polymer containing structural units having an 8-16C alkyl group, the structural units in the component (B) are selected from 8-16C alkyl (meth)acrylates, 8-16C alkyl vinyl esters, 8-16C alkyl vinyl ethers, 8-16C alkyl (meth)acrylamides, 8-16C alkyl allyl ethers, and 8-16C diketenes, and a total (R) of molar average values in carbon chain length distribution of the alkyl residues of monomers in the component (B) is in a range of 11.0 to 14.0. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a fuel oil comprising an intermediate distillate and a plant- or animal-originated oil and exhibiting improved low-temperature fluidity. SOLUTION: The fuel oil composition comprises (F1) 89-50 vol% of a fuel oil originated from minerals, (F2) 11-50 vol% of a fuel oil originated from plants and/or animals and a comb-shaped polymer comprising the following components as low-temperature additive components, wherein the sum Q of the molar average of the carbon chain length distribution in the alkyl groups of one monomer 1 and the molar average of the carbon chain length distribution in the alkyl groups in the ester group of the other monomer 2 is 21.0-28.0. The low-temperature additive components are (A) at least one copolymer comprising 8-21 mol% of ethylene and at least one acrylate or vinyl ester bearing a 1-18C alkyl group, (B1) at least one olefin bearing at least one 8-18C alkyl group on an olefinic double bond of the monomer 1, and (B2) at least one ethylenically unsaturated dicarboxylic acid bearing at least one 8-16C alkyl group bonded via the ester portion of the monomer 2. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
The present invention relates to terpolymers based on alpha , beta -unsaturated dicarboxylic acid anhydrides, alpha , beta -unsaturated compounds and polyoxyalkylene ethers according to Claim 1, and also a process for the preparation of the same according to Claim 5. The invention likewise provides a mixture of at least one terpolymer according to Claim 1 and at least one ethylene-vinyl ester copolymer. The terpolymers of the invention, and also their mixtures, are used as paraffin inhibitors in crude oils and petroleum products.