Process for producing pvp-h2o2 products

Details Process for producing pvp-h2o2 products Process for producing pvp-h2o2 products

C - Chemistry, Metallurgy

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C01B 15/037 (2006.01) A01N 59/00 (2006.01) A61K 8/22 (2006.01) A61K 8/81 (2006.01) A61K 31/79 (2006.01) A61K 33/40 (2006.01) A61L 2/16 (2006.01) A61Q 17/00 (2006.01) A61Q 19/00 (2006.01) C01B 15/01 (2006.01) C11D 3/39 (2006.01)

Patent

CA 2106375

2106375 9217158 PCTABS00016 A process for the production of PVP-H2O2 products in the form of free-flowing powders, or a free-standing, porous solid or foam, is described. To prepare free-flowing powders, a fluidized bed is maintained at a reaction temperature of about room temperature to 60 ·C and is contacted with finely divided droplets of a 30 to 85 % by weigth aqueous H2O2 solution. Preferably the fluidized bed temperature is about 35·-45 ·C, a 5-70 % H2O2 solution is used, and the feed rate of introduction of the H2O2 solution is about 5-50 g/minute/kg PVP present. The PVP-H2O2 product preferably contains about 15-24 %, preferably 18-22 %, H2O2 (1:1 molar ratio) and less than about 5 % water.

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