METHOD OF PRODUCING ZINC STEARATE Russian patent published in 2014 - IPC C01G9/00 C07C51/41 

FIELD: chemistry.

SUBSTANCE: method of producing zinc stearate involves reacting stearic acid and zinc hydroxide with heating and intense stirring, followed by heat treatment, filtration, drying and packaging. When reacting stearic acid and zinc hydroxide, hydrochloric acid is further added to the mixture as a catalyst. The reaction is carried out in an aqueous medium which is heated to 96-98°C. Circulation is carried out for 2.0 hours. The zinc stearate suspension is then turned into a stable emulsion state and held at that temperature for 30-45 minutes. Further, heat treatment is carried out to aggregate particles, which are then held for 20-25 minutes to solution pH 4.5-5.0, acid number of 5.0 mg and basic substance content of 10-11%. Water is added, followed by stirring and filtering. The precipitate is dried with hot air at temperature of 80-90°C.

EFFECT: invention simplifies production of zinc stearate.

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