Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2005-08-30
2005-08-30
Douyon, Lorna M. (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S438000, C510S444000, C510S477000, C510S509000
Reexamination Certificate
active
06936577
ABSTRACT:
A particulate laundry detergent composition which comprises a detergent base powder comprising surfactant and builder and, as separate particulate components:(a) an alkali metal carbonate salt selected from carbonate, bicarbonate, sesquicarbonate and combinations thereof; and(b) a water-soluble organic acid which, when reacted with (a) in the presence of water, generates carbon dioxide gas;wherein the alkali metal carbonate salt, when taken separately, has a 90% dissolution time of less than 15 seconds, preferably less than 10 seconds, more preferably less than 7 seconds; and the water-soluble organic acid has a d50particle size which is in the range of from 150 to 1500 microns. The alkali metal carbonate salt preferably has an average bulk density of at most 1000 g/l, preferably at most 800 g/l, more preferably at most 600 g/l. The alkali metal carbonate salt preferably has a d50particle size of at most 250 microns, preferably from 1 to 200 microns, more preferably from 10 to 150 microns. The alkali metal carbonate salt is preferably sodium and/or potassium carbonate.
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Dontula Prasanna Rao
Parry Alyn James
Powell Catherine Maria
Robinson Karen
Schokker Wiebe
Douyon Lorna M.
Unilever Home Products and Care USA division of Conopco, Inc.
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