Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1996-02-01
1998-04-28
Howard, Jacqueline V.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510367, 510372, 134 3, C23G 102
Patent
active
057444390
ABSTRACT:
A process for bleaching and/or providing limescale removal at a surface, by applying to that surface an aqueous composition having 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 and (b) an acidic composition wherein components (a) and (b) are mixed not more than two hours before being applied to the surface requiring bleaching and/or limescale removal. The organic acid of component (a) has the formula XC (O)OOH where X is hydrogen or CH.sub.3 (CH.sub.2).sub.n and n is 0 to 8. The acid composition (b) comprises hydrochloric, sulphamic, tartaric, phosphoric, oxalic, citric, salicylic or ascorbic acids.
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Derwent Abstracts Nos. JP 55-109498 (Aug. 1980); JP 59-164400 (Sep. 1984); JP 1-240600 Sep. 1989); JP 3-140400 (Jun. 1991); JP 4-59900 (Feb. 1992); JP 5-156293 (Jun. 1993); and JP 6-192692 (Jul. 1994).
Copy of International Search Report for Int'l Appln. No. PCT/GB96/00054 dated 6 Dec. 1996.
Howard Jacqueline V.
Reckitt & Colman Products Limited
Toomer Cephia D.
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