Detergent composition
First Claim
1. A detergent composition comprising three or more distinct regions, the composition comprising one or more anti-corrosion agents selected from benzotriazole or bis-benzotriazole and substituted derivatives thereof and/or metal salts or complexes chosen from the group consisting of zinc, cobalt and bismuth salts and/or complexes and a bleaching compound, wherein,a) at least 60% wt of the total amount of the bleaching compound in the detergent composition is located in a first distinct region, which region is substantially free of anti-corrosion agents;
- b) at least 95% wt of the total amount of one or more anti-corrosion agents in the detergent composition are located in a second distinct region having a pH, measured as a 1% wt solution, in the range of from 5 to 8.9 which second distinct region is not in direct contact with the first distinct region, wherein the second distinct region further comprises from 1% wt to 10% wt of the total amount of the bleaching compound in the detergent composition, and further wherein the second distinct region has a lower pH than the first distinct region; and
c) at least one further distinct region located between the first and second distinct regions comprises less than 5% wt of the total amount of anti-corrosion agents in the composition.
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Accused Products
Abstract
A detergent composition comprising three or more distinct regions, the composition comprising one or more anti-corrosion agents and a bleaching compound, wherein, the bleaching compound is predominantly located in a first distinct region, and the one or more anti-corrosion agents are predominantly located in a second distinct region having a pH in the range of from 5 to 8.9 which second distinct region is not in direct contact with the first distinct region, and further wherein the second distinct region has a lower pH than the first distinct region.
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Citations
18 Claims
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1. A detergent composition comprising three or more distinct regions, the composition comprising one or more anti-corrosion agents selected from benzotriazole or bis-benzotriazole and substituted derivatives thereof and/or metal salts or complexes chosen from the group consisting of zinc, cobalt and bismuth salts and/or complexes and a bleaching compound, wherein,
a) at least 60% wt of the total amount of the bleaching compound in the detergent composition is located in a first distinct region, which region is substantially free of anti-corrosion agents; -
b) at least 95% wt of the total amount of one or more anti-corrosion agents in the detergent composition are located in a second distinct region having a pH, measured as a 1% wt solution, in the range of from 5 to 8.9 which second distinct region is not in direct contact with the first distinct region, wherein the second distinct region further comprises from 1% wt to 10% wt of the total amount of the bleaching compound in the detergent composition, and further wherein the second distinct region has a lower pH than the first distinct region; and c) at least one further distinct region located between the first and second distinct regions comprises less than 5% wt of the total amount of anti-corrosion agents in the composition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification
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- Resources
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Current AssigneeReckitt Benckiser Finish B.V. (Reckitt Benckiser Group PLC)
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Original AssigneeReckitt Benckiser N.V. (Reckitt Benckiser Group PLC)
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InventorsGeret, Laurence, Hardt, Thomas
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Primary Examiner(s)Douyon, Lorna M
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Application NumberUS12/377,237Publication NumberTime in Patent Office2,076 DaysField of Search510/446, 510/224, 510/226, 510/227, 510/298, 510/375, 510/378, 134/25.2, 813/7US Class Current510/446CPC Class CodesC11D 17/0078 Multilayered tabletsC11D 3/0073 Anticorrosion compositionsC11D 3/28 Heterocyclic compounds cont...C11D 3/39 Organic or inorganic per-co...C11D 3/3942 Inorganic per-compounds C11...
