Process for bleaching fabrics
AssigneeThe Procter & Gamble Company
InventorAndrea Agostini
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Abstract
The present invention relates to the bleaching of fabrics with a hypochlorite-containing composition. The well-known prejudice against using hypochlorite bleaches to bleach synthetic fabrics because of the resulting fabric yellowing is addressed by the presence of silicate salts in the bleaching medium.
Claims25
A process for bleaching a synthetic fabric having a brightener deposited onto its surface, wherein said fabric is contacted with an aqueous solution of a bleaching amount of an alkali metal hypochlorite, or mixtures thereof, and from 0.0015% to 0.5% by weight, of an alkali metal salt of silicate, or mixtures thereof, whereby the yellowing of said fabric is reduced as compared to the same solution without silicate or prevented.
Dependencies are inferred from the claim text.