Photobleach speckle and laundry detergent compositions containing it
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United States of America Patent
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Feb 21, 2006
Grant Date -
May 8, 2003
app pub date -
Aug 19, 2002
filing date -
Aug 20, 2001
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A colored speckle composition for use in particulate laundry detergent compositions comprising a porous granular carrier and at least 0.01 wt % photobleach, preferably at least 0.05 wt %, more preferably at least 0.1 wt %, based on the active ingredient, the composition having an average bulk density of at most 600 g/l, preferably at most 500 g/l, most preferably at most 400 g/l. The carrier system reduces the staining tendency of the photobleach. The most preferred carrier is spray dried detergent base powder. The most preferred photobleach is a blend of Zn and Al sulphonated phthalocyanine.
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