METHOD OF PRODUCING CALCIUM STEARATE Russian patent published in 2019 - IPC C07C51/41 C01F11/00 

FIELD: technological processes.

SUBSTANCE: invention relates to production of calcium stearate and can be used in production of polyvinyl chloride (PVC) composites, synthetic rubber, oil producing and oil refining, in production of artificial leather and linoleum, medicines and perfume and cosmetic industry. Method of producing calcium stearate is carried out by reacting stearic acid and calcium oxide or hydroxide in equimolar ratio with intense stirring in the solid phase. At first, reaction mixture is exposed to multiple impact loads by rotating multi-tier blades of jet mill in pseudo-liquefied layer at temperature below melting point of stearic acid. After impact of multiple impact loads by rotating multilayered blades of jet mill reaction mixture is directed into oscillating extrusion mixer, in which deformation stirring is carried out at temperature of reaction mass higher than fusion point of stearic acid, but lower than melting temperature of calcium stearate.

EFFECT: invention enables to obtain calcium stearate with stable quality indices using a continuous method in a time which is 4,5 times less compared to the prototype.

1 cl, 2 tbl, 8 ex