Process for manufacturing granular sodium percarbonate

Compositions – Oxidative bleachant – oxidant containing – or generative – Composition containing a stabilizer or a product in the form...

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25218628, 25218629, 4234152, 510302, 510309, 510367, 8111, C11D 3395, C11D 712

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active

058514201

ABSTRACT:
This invention relates to a process of manufacturing granular sodium percarbonate and more particularly, to a process of a stable granular sodium percarbonate detergent composition having an excellent solution velocity when added to water, comprising the following steps: hydrogen peroxide solution is directly sprayed to unpurified anhydrous sodium carbonate to produce granular sodium percarbonate followed by the addition of a stabilizer having a new composition in a reactor or fluidized bed dryer, then recycling sodium percarbonate particles which are of nonuniform particle size back into the process for continuous manufacturing.

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patent: 5599781 (1997-02-01), Haeggberg et al.

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