Use of a reaction product of carboxylic acids with aliphatic polyamines for improving or boosting the separation of water from fuel oils

Abstract

Use of a reaction product of saturated or unsaturated aliphatic mono- or polycarboxylic acids with aliphatic polyamines for improving or boosting the separation of water from fuel oils which comprise additives with detergent action. A Fuel additive concentrate comprising the said reaction product, certain additives with detergent action and optionally dehazers, cetane number improvers and solvents or diluents.

1 - 11 . (canceled) 
     
     
         12 : A fuel additive concentrate suitable for use in fuel oils, comprising
 (RP) 0.01 to 40% by weight of a reaction product of (A) at least one saturated or unsaturated aliphatic mono- or polycarboxylic acid with 10 to 200 carbon atoms or an anhydride thereof with (B) at least one aliphatic polyamine comprising 2 to 10 nitrogen atoms and 0 to 2 hydroxyl groups exhibiting at least one primary or secondary amino group;   (C) 5 to 40% by weight of at least one additive with detergent action selected from
 (i) compounds with moieties derived from succinic anhydride and having hydroxyl and/or amino and/or amido and/or imido groups; 
 (ii) nitrogen compounds quaternized in an acid-free manner, obtainable by addition of a compound comprising at least one oxygen- or nitrogen-containing group reactive with an anhydride and additionally at least one quaternizable amino group onto a polycarboxylic anhydride compound and subsequent quaternization; 
 (iii) polytetrahydrobenzoxazines and bistetrahydrobenzoxazines; 
   (D) 0 to 5% by weight of at least on dehazer selected from
 (iv) alkoxylation copolymers of ethylene oxide, propylene oxide, butylene oxide, styrene oxide and/or other oxides; 
 (v) alkoxylated phenol formaldehyde resins; 
   (E) 0 to 75% by weight of at least one cetane number improver;   (F) 0 to 50% by weight of at least one solvent or diluent.