Patent ID: 8287755

Claim:
A solid-layered bleach composition having at least two parts comprising a first part and a second part: wherein said first part comprises, a) 0.1%-50% by weight of a hypochlorite selected from the group consisting of calcium hypochlorite, magnesium hypochlorite and mixtures thereof; b) 20%-60% by weight of a builder selected from carbonate, bicarbonate, sesquicarbonate and mixtures thereof; c) 0.1%-60% by weight of a water-soluble polymer, wherein said water-soluble polymer is selected from the group consisting of a polycarboxylate, sulfonated carboxylate, polysulfonate, polyvinylpyrrolidone, copolymers and mixtures thereof; d) 1%-50% by weight of an acid selected from the group consisting of sulfonic acid, dicarboxylic acid, monocarboxylic acid, aminocarboxylic acid and mixtures thereof; e) optionally, fillers, desiccants, solid processing aids, colorants, a water-swellable polymer wherein said water-swellable polymer is selected from the group consisting of cross-linked polycarboxylate, cross-linked polysulfonate, cross-linked carboxymethyl cellulose, cellulose, sodium carboxymethylcellulose, and mixtures thereof; and f) wherein said first part does not contain sodium hypochlorite, lithium hypochlorite, potassium hypochlorite, hydantoins, isocyanurates, carboxylic acids that have one or more hydroxyl group moieties, aliphatic or aromatic amines that possess a covalently bound proton to the nitrogen moiety, and mixtures thereof; and wherein said second part comprises, a) 0.01%-25% by weight of a surfactant selected from the group consisting of anionic, cationic, nonionic, amphoteric, zwitterionic and mixtures thereof; b) 10-90% by weight of a builder selected from carbonate, bicarbonate, sesquicarbonate and mixtures thereof; c) 1-50% by weight of an acid selected from the group consisting of sulfonic acid, dicarboxylic acid, monocarboxylic acid, aminocarboxylic acid and mixtures thereof; d) optionally dyes, fillers, desiccants, solid processing aids, fragrances, preservatives, colorants, anti-corrosion inhibitors, and mixtures thereof; and e) wherein said second part does not contain any oxidant wherein said oxidant comprises hypochlorite, N-halo compound, peracid, peroxide, peroxygen bleach and mixtures thereof.