C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 3/395 (2006.01) C11D 3/39 (2006.01) C11D 17/04 (2006.01) D06L 3/02 (2006.01)
Patent
CA 2211300
A process for bleaching and/or providing limescale removal at a surface, comprising applying to that surface an aqueous composition of hydrogen peroxide or an organic peracid, which composition has a pH of 2 or less and comprises a mixture of (a) an aqueous composition comprising hydrogen peroxide or an organic peracid having a pH of greater than 2 but less than 7 (hereinafter component (a)), and (b) an acidic composition (hereinafter component (b)), wherein components (a) and (b) are mixed not more than two hours before being applied to the surface requiring bleaching and/or limescale removal.
Procédé de blanchiment d'une surface ou d'élimination du calcaire d'une surface et consistant à appliquer à ladite surface une composition aqueuse de peroxyde d'hydrogène ou d'un peracide organique, dont le pH est égal ou inférieur à 2 et qui comprend un mélange (a) d'une composition aqueuse comprenant du peroxyde d'hydrogène ou un peracide organique, dont le pH est supérieur à 2 mais inférieur à 7 (constituant (a)), et (b) d'une composition acide (constituant (b)). On mélange lesdits constituants (a) et (b) pendant une durée ne dépassant pas deux heures avant de les appliquer à ladite surface à blanchir et/ou dont on veut éliminer le calcaire.
Fetherstonhaugh & Co.
Reckitt & Colman Products Limited
Reckitt Benckiser (uk) Limited
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