C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 3/20 (2006.01) C02F 5/10 (2006.01) C02F 5/12 (2006.01) C11D 1/62 (2006.01) C11D 1/72 (2006.01) C11D 1/835 (2006.01) C11D 1/94 (2006.01) C23G 1/02 (2006.01) C23G 1/08 (2006.01)
Patent
CA 2182676
Aqueous cleaning compositions for removing limescale on hani surfaces, especially metai surfa are disclosed which comprises a surfactant or mixtures then of, an acid with its first pKa not exceeding 5, or mixtures thereof, and m acid in a weight ratio of maleic acid to said acid such titat the surface safety is improved. Said compositions are particularly suitable to be used in the bathrooms and in the kitchens or for descaling appliances.
Cette invention se rapporte à des compositions de nettoyage aqueuses, qui servent à éliminer le tartre recouvrant des surfaces dures, en particulier des surfaces métalliques, et qui comprennent un tensioactif ou des mélanges de ce tensioactif, un acide dont le premier pKa ne dépasse pas 5 ou des mélanges de cet acide, ainsi que de l'acide maléique selon un rapport en poids entre l'acide maléique et ledit acide tel que la sécurité de surface est améliorée. Ces compositions sont particulièrement appropriées pour être utilisées dans les salles de bains et dans les cuisines ou pour détartrer des appareils ménagers.
Carrie Michel Jean
Koenig Axel
Vos Eddy
Dimock Stratton Llp
The Procter & Gamble Company
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