| 摘要 |
FIELD: chemistry.SUBSTANCE: invention relates to coated sodium percarbonate particles, which can be used as bleaching component in compositions of detergents for household washing of fabrics or washing up. Coated sodium percarbonate particles contain sodium percarbonate core and coating, constituting from 5 to 20 wt % of weight of coated sodium percarbonate particle. Coating contains at least one coating layer, containing, at least, 20 wt % of sodium carbonate, at least, 75 wt % of are in form of monohydrate, with the total content of sodium carbonate monohydrate in particle being less than 20 wt % of the weight of coated particle. Method for obtaining coated sodium percarbonate particles includes bringing particles of sodium percarbonate core without coating in contact with coating solution, containing sodium carbonate, at temperature 45-60°C and drying coated particles at temperature 60-75°C.EFFECT: good stability and high rate of dissolution of coated sodium percarbonate particles with low production costs.12 cl, 11 tbl, 14 ex |
