Coated sodium percarbonate particles

Details Coated sodium percarbonate particles Coated sodium percarbonate particles

C - Chemistry, Metallurgy

11

D

C11D 3/39 (2006.01) C01B 15/10 (2006.01) C11D 3/02 (2006.01) C11D 3/12 (2006.01) C11D 17/00 (2006.01)

Patent

CA 2657195

Sodium percarbonate particles with a coating layer that contains 70 to 99.8% by weight moisture free sodium sulphate and 0.2 to 2% by weight of a sodium borate, the proportion by weight of the coating layer ranging from 1 to 10% relative to the mass of the sodium percarbonate particles, exhibit high storage stability in detergent and cleaning agent preparations, due to a synergistic effect of sodium sulphate and sodium borate on storage stability, and at the same time have only a low boron content.

Particules de percarbonate de sodium présentant une couche de pelliculage contenant 70 à 99,8 % de sulfate de sodium anhydre et 0,2 à 20 % en poids d'un borate de sodium, et dont la part en poids est de 1 à 10 % par rapport au poids des particules de percarbonate de sodium. Lesdites particules de percarbonate de sodium présentent une grande stabilité au stockage dans des préparations de lessive ou de détergent du fait de l'effet synergique du sulfate de sodium et du borate de sodium sur la stabilité au stockage, et ne présentent cependant qu'une faible teneur en bore.

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