Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1997-08-21
1999-10-26
Douyon, Lorna M.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510440, 510446, 510447, C11D 1700
Patent
active
059728701
ABSTRACT:
A chemical dispensing device comprising a dissolvable, multi-layered, laundry tablet for insertion in a washing machine at the initiation of the laundry washing process. The laundry tablet includes a dissolvable first or outer layer which includes an alkaline substance for raising the pH level of the wash water upon dissolving, and a dissolvable second or inner layer which includes an acidic substance for subsequently lowering or neutralizing the pH level of the wash water. The laundry tablet thus provides an effective device for automatically varying the pH level of the laundry wash water, which automatic variation is effected by the single step of depositing the tablet in the laundry wash water at the initiation of the wash cycle.
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Douyon Lorna M.
Vision International Production, Inc.
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