USE OF MINERAL OILS CONTAINING DETERGENT ADDITIVE FOR IMPROVING COLD FLOW CHARACTERISTICS AND MIDDLE DISTILLATE Russian patent published in 2013 - IPC C10L1/14 C10L1/16 C10L10/14 

FIELD: chemistry.

SUBSTANCE: present invention relates to use of at least one oil-soluble compound B) which acts as a nucleating agent for paraffin crystallisation and is selected from essentially linear hydrocarbons having at least 20 carbon atoms in order to improve response of additive C), which improves cold flow of mineral oil in middle distillates which contain at least one ash-free nitrogen-containing detergent additive A) which is an oil-soluble amphiphilic compound which contains at least one alkyl or alkenyl radical bound to a polar group, the alkyl or alkenyl radical containing 10-500 carbon atoms and the polar group containing 2 or more nitrogen atoms. The present invention also relates to an additive for middle distillates and a middle distillate having sulphur content lower than 100 ppm and 90% final boiling point lower than 360°C.

EFFECT: use of oil-soluble compounds as nucleating agents for paraffin crystallisation in order to prevent deterioration of efficiency of traditional additives for improving cold flow under the action of nitrogen-containing detergent additives.

24 cl, 45 ex, 4 tbl