Detergent compositions
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United States of America Patent
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-
Mar 19, 2002
Grant Date -
N/A
app pub date -
Jun 4, 1998
filing date -
Jun 6, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A tablet of compacted particulate detergent composition including surfactant and detergency builder, suitable for fabric washing, is sub-divided into a plurality of discrete regions with differing compositions. At least one region of the tablet contains a water-swellable polymer serving to promote disintegration of this region. The polymer is present in this region in a concentration greater than in at least one other region of the tablet so as to cause disintegration of the region at a greater speed than disintegration of another region of the tablet.
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