METHOD OF PRODUCING IRON CARBOXYLATES Russian patent published in 2017 - IPC C09F9/00 

FIELD: chemistry.

SUBSTANCE: invention relates to chemical industry and, in particular, can be used in production of siccatives and catalyst systems, as well as to petrochemical industry and in production of polymer materials with controlled service life. Method involves saponification of a mixture of fatty acid with sodium compounds, followed by reaction with variable-valence metal compounds. Fatty acid component used is a mixture of light vegetable oils extracted from soap stock, having acid number of 100÷120 mg KOH/g. Saponification process is carried out with sodium carbonate or bicarbonate while stirring continuously in temperature range 200÷220 °C to obtain a mixture of sodium carboxylate with an acid number 1÷1.3 mg KOH/g. Further, method includes uniformly adding to said an inorganic salt of di- or trivalent iron, for example iron sulphate, iron oxide, iron chloride, etc., in molar ratio 2:1 or 3:1 depending on valence of iron compounds. Obtained mixture is heated at a temperature of 105÷160 °C with continuous stirring until conversion of sodium carboxylate into iron carboxylate with acid number of up to 1.0 mg KOH/g. Agglomerate in form of sodium sulphate is removed from reaction mixture.

EFFECT: method of producing iron carboxylates according to invention enables to improve and simplify technology for production of iron, carboxylates, provides high degree of conversion and yield, intensifies process, widens field of use, in particular, is used in producing oxy-biodegradable additives.

1 cl, 1 tbl, 6 ex