METHOD OF PRODUCING AMIDOIMIDES OF ALKENYLSUCCINIC ACID Russian patent published in 2013 - IPC C08F8/32 C08F8/46 C08F122/40 

FIELD: chemistry.

SUBSTANCE: method of producing amidoimides of alkenylsuccinic acid is carried out by reacting aminoamides, obtained by reacting industrial polyamines or a mixture of polyamines with butyric acid or isobutyric acid or oleic acid or stearic acid or stearine, at temperature of 160-190°C for 4-6 hours in molar ratio polyamine: acid of 1-1.1:1, with alkenylsuccinic anhydride, first at temperature of 25-29°C for 0.5 hours, then at 110-115°C for 0.5-1 hours and the obtained mixture is then held at 145-150°C for 3-4 hours. The molar ratio of alkenylsuccinic anhydride to aminoamide is equal to 1:1.1-1.4 and the process is carried out in the presence of industrial oil. The industrial polyamines are selected from diethylenetriamine or triethylenetetramine or N,N'-bis(β-ethylamino)piperazine or tetraethylenepentamine or ethylenediamine.

EFFECT: improved method of producing succinimide additives, wider range of additives and corrosion inhibitors.

5 cl, 2 tbl, 30 ex