D - Textiles – Paper – 06 – L
Patent
D - Textiles, Paper
06
L
D06L 3/08 (2006.01) C01B 11/06 (2006.01) C11D 3/28 (2006.01) C11D 3/395 (2006.01)
Patent
CA 2221109
The present invention discloses a process for the manufacture of liquid aqueous bleaching compositions comprising hypochlorite, a strong source of alkalinity and water, said process comprising the steps of: mixing said alkali metal hypochlorite, said strong source of alkalinity and said water; adding a precipitating agent, or mixtures thereof; and thereafter separating the precipitates formed from said composition. The compositions provided by the process according the present invention are substantially free of heavy metal ions, thereby providing improved whiteness performance and/or fabric safety performance.
La présente invention décrit un procédé permettant de fabriquer des compositions de blanchiment aqueuses liquides contenant de l'hypochlorite, une source d'alcalinité forte et de l'eau, ledit procédé consistant à: mélanger ledit hypochlorite de métal alcalin, ladite source d'alcalinité forte et ladite eau, ajouter un précipitant ou des mélanges de précipitants, puis séparer les précipités qui se sont formés de ladite composition. Les compositions obtenues par le procédé de la présente invention sont pratiquement exemptes d'ions métalliques lourds, ce qui améliore la blancheur et/ou la sécurité du tissu.
Dimock Stratton Llp
The Procter & Gamble Company
LandOfFree
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