Patent ID: 6258135
Filing Date: 2001-07-10
Classification: C07C,C10L

Abstract:
A fuel oil composition obtainable by the addition, to a major proportion of a liquid hydrocarbon middle distillate fuel oil having a sulfur concentration of 0.2% by weight of less, based on the weight of fuel, of a minor proportion of either(a) a compound of the general formula (I): ##STR10##wherein Ar represents an aromatic ring system;B represents a hydrocarbon group (i);OR' represents a hydroxyl group or derivative thereof (ii) wherein R' represents hydrogen, or a hydrocarbyl group, or a group of the formula ##STR11##wherein M represents an oxygen atom or an NH group and n represents a number from 1 to 50, and wherein R' may be bonded either directly to the oxygen depending from the ring system or indirectly via a linking group;--COOR"" represents an ester group (iii) wherein R"" represents an alkyl group optionally substituted by one or more hydroxyl groups, andA represents a group of the formula (II): ##STR12##wherein Ar, B, R' and R"" are as defined above, and A' and A"" each independently represent hydrocarbylene groups, and wherein v represents an integer in the range of from 0 to 10, w represents an integer in the range of from 1 to 3, and x, y and z each independently represent an integer in the range of from 1 to 3;(b) an additive composition comprising one or more additives for fuel oils and into which has been incorporated the compound (a); or(c) an additive concentrate obtainable by incorporating the compound (a) or additive composition (b), and optionally one or more additional additives, into a mutually-compatible solvent therefor.