C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 3/02 (2006.01) C01G 9/00 (2006.01) C11D 3/00 (2006.01) C11D 3/20 (2006.01)
Patent
CA 2509447
A process for preparing in-situ water-soluble zinc salts for use in as a base or additive in preparing an automatic dishwashing composition, said process is characterized by comprising the steps of: a) dispersing zinc oxide in water; b) combining an acid with said zinc oxide/water mixture; c) mixing said zinc oxide/water mixture and said acid until said zinc oxide is at least partially dissolved; d) maintaining said zinc oxide/water/acid mixture within an acidic pH range; and e) combining said zinc oxide/water/acid mixture with at least one rinse aid ingredient to form a rinse aid composition; wherein the order of addition of said process steps (a) and (b) is not critical.
L'invention concerne un procédé de préparation in situ de sels de zinc hydrosolubles destinés à être utilisés en tant que base ou additif dans la préparation d'une composition pour lave vaisselle automatique, ledit procédé étant caractérisé par les étapes consistant à : a) disperser de l'oxyde de zinc dans de l'eau; b) combiner un acide avec ledit mélange d'oxyde de zinc/eau; c) mélanger ledit mélange d'oxyde de zinc/eau et ledit acide jusqu'à ce que ledit oxyde de zinc soit au moins en partie dissous; d) maintenir ledit mélange d'oxyde de zinc/eau/acide dans une plage de pH acide; et e) combiner ledit mélange d'oxyde de zinc/eau/acide avec au moins un ingrédient d'aide au rinçage afin de former une composition d'aide au rinçage; l'ordre d'addition desdites étapes (a) et (b) du procédé n'étant pas critique.
Dimock Stratton Llp
The Procter & Gamble Company
LandOfFree
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