C - Chemistry – Metallurgy – 11 – D
Patent
C - Chemistry, Metallurgy
11
D
C11D 7/54 (2006.01) C11D 3/00 (2006.01) C11D 3/33 (2006.01) C11D 3/39 (2006.01)
Patent
CA 2144103
There is provided a bleaching composition providing enhanced anti-silver tarnishing properties containing an oxygen-releasing bleach system comprising a hydrogen peroxide source and a peroxyacid bleach precursor compound selected from the group consisting of (i) an N-acylated lactam bleach precursor (ii) perbenzoic acid precursor (iii) perbenzoic acid derivative precursor (iv) cationic peroxyacid precursor and any combinations of (i) - (iv); and (b) an Mn(II) compound.
Hartman Frederick A.
Macbeath Fiona S.
Smith Alison M.
Kirby Eades Gale Baker
The Procter & Gamble Company
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