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Clariant Patents Bleach Activator Granules



Published November 14, 2005
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Patent No. US 6,645,927 B1: German researchers for Clariant GmbH patented a coated bleach activator granule process. The process includes forming a mixture of at least one bleach activator, a granulating auxiliary and additives; agglomerating the mixture into activator base granules; coating the granules with a melt of a coating substance and thermally conditioning the coated granules with a heat treatment.


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