| 摘要 |
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 comb-shaped polymers which include alkyl side chains having a length of at least 20 carbon atoms, in order to improve response of additive C), which improves cold flow of mineral oil and is different from B), 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.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 |
