Additives for low-sulfur marine diesel

A method of dispersing paraffins which precipitate out of low-sulfur marine diesel having a sulfur content of 1% by weight or lower on storage at temperatures below the cloud point, by adding to the low-sulfur marine diesel an ethylene copolymer (A) containing, as well as ethylene, 8.0 to 17 mol % of one or more vinyl and/or (meth)acrylic esters, and a comb polymer (B) comprising structural units B1 which derive from C10-C28-alkyl esters of unsaturated mono- and dicarboxylic acids, C10-C28-alkyl vinyl esters, C10-C28-alkyl vinyl ethers, C10-C28-alkyl allyl ethers and/or linear C12-C30-α-olefins, and wherein at least 20 mol % of the alkyl radicals bonded to the repeat structural units (B1) have 12 to 16 carbon atoms and at least 5 mol % of the alkyl radicals have 18 or more carbon atoms, and in which the untreated low-sulfur marine diesel has a pour point of +6° C. or higher.

A method of dispersing paraffins which precipitate out of a low-sulfur marine diesel having a sulfur content of 1% by weight or lower on storage below the cloud point, wherein the low-sulfur marine diesel contains an ethylene copolymer (A), by adding a comb polymer (B) comprising structural units B1 which derive from C10-C28-alkyl esters of unsaturated mono- and dicarboxylic acids, C10-C28-alkyl vinyl esters, C10-C28-alkyl vinyl ethers, C10-C28-alkyl allyl ethers and/or linear C12-C30-α-olefins, and wherein at least 20 mol % of the alkyl radicals bonded to the repeat structural units (B1) have 12 to 16 carbon atoms and at least 5 mol % of the alkyl radicals have 18 or more carbon atoms, in which the untreated low-sulfur marine diesel has a pour point of +6° C. or higher, and in which the ethylene copolymer (A) contains, as well as ethylene, 8.0 to 17 mol % of one or more vinyl and/or (meth)acrylic esters.