Solid-Layered Bleach Compositions

• US 20100140544A1
• Filed: 11/18/2009
• Published: 06/10/2010
• Est. Priority Date: 12/09/2008
• Status: Active Grant

• Current Assignee: Clorox Company
• Original Assignee: Clorox Company
• Inventors: Rumberger, Evan M., Smith, William L.
• Granted Patent: US 8,287,755 B2
• Time in Patent Office: Days
• US Class Current: 252/186.100
• CPC Class Codes: C11D 17/0039 Coated compositions or coated components in the compositions, (micro)capsules
• CPC Class Codes: C11D 17/0078 Multilayered tablets
• CPC Class Codes: C11D 3/10 Carbonates ; Bicarbonates
• CPC Class Codes: C11D 3/2079 Monocarboxylic acids-salts thereof
• CPC Class Codes: C11D 3/2082 Polycarboxylic acids-salts thereof
• CPC Class Codes: C11D 3/33 Amino carboxylic acids
• CPC Class Codes: C11D 3/349 additionally containing nitrogen atoms, e.g. nitro, nitroso, amino, imino, nitrilo, nitrile groups containing compounds or their derivatives or thio urea
• CPC Class Codes: C11D 3/3761 in solid compositions
• CPC Class Codes: C11D 3/3776 Heterocyclic compounds, e.g. lactam
• CPC Class Codes: C11D 3/378 (Co)polymerised monomers containing sulfur, e.g. sulfonate
• CPC Class Codes: C11D 3/3953 Inorganic bleaching agents C11D3/3951 takes precedence

Abstract

The present invention provides a solid-layered composition having at least two parts. The first part comprises a) calcium hypochlorite, magnesium hypochlorite and mixtures thereof, b) a builder, c) a water-soluble polymer, d) an acid, and e) wherein the first part does not contain sodium hypochlorite, lithium hypochlorite, potassium hypochlorite and mixtures thereof. The second part comprises a) a surfactant, b) a builder, c) an acid, and d) wherein the second part does not contain any oxidant.

Claims

1. 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% of a hypochlorite selected from the group consisting of calcium hypochlorite, magnesium hypochlorite and mixtures thereof;

b) 20%-60% of a builder selected from carbonate, bicarbonate, sesquicarbonate and mixtures thereof;

c) 0.1%-60% 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% 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% of a surfactant selected from the group consisting of anionic, cationic, nonionic, amphoteric, zwitterionic and mixtures thereof;

b) 10-90% of a builder selected from carbonate, bicarbonate, sesquicarbonate and mixtures thereof;

c) 1-50% 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.

2. The composition of claim 1, wherein the composition is in the form of a tablet.

3. The composition of claim 1, wherein the composition is in the form of a granule.

4. The composition of claim 1, wherein the hypochlorite is a calcium hypochlorite.

5. The composition of claim 4, wherein said water-soluble polymer is a polycarboxylate.

6. The composition of claim 5, wherein the polycarboxylate is selected from the group consisting of acrylic, methacrylic, maleic and mixtures thereof.

7. The composition of claim 6, wherein the molecular weight of the polycarboxylate is between 1,000-6,000 daltons.

8. The composition if claim 6, wherein the acid in the first part and second part is a dicarboxylic acid.

9. The composition of claim 8, wherein the first part requires a water-swellable polymer.

10. The composition of claim 8, wherein the surfactant is an anionic surfactant.

11. The composition of claim 10, wherein the second part also requires 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.

12. The composition of claim 11, wherein the composition requires a third part wherein said third part is situated between the first part and second part and said third part comprises a component selected from the group consisting of binder, filler, colorant, desiccant, solid processing aids, sodium chloride, sodium silicate, sodium sulfate, magnesium sulfate, magnesium carbonate, calcium carbonate, calcium hydroxide, calcium oxide, magnesium oxide, magnesium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, sodium sesquicarbonate, potassium sesquicarbonate, sodium borate, boric acid, aluminum hydroxide, silica and mixtures thereof.

13. A solid-layered composition having at least two parts consisting essentially of a first part and a second part:

wherein said first part consisting essentially of,

a) 0.1%-50% of a hypochlorite selected calcium hypochlorite, magnesium hypochlorite and mixtures thereof;

b) 20%-60% of a builder selected from carbonate, bicarbonate, sesquicarbonate and mixtures thereof;

c) 0.1%-60% 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% of an acid selected from the group consisting of sulfonic acid, dicarboxylic acid, monocarboxylic acid, amino carboxylic 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 moiety, aliphatic or aromatic amine that possess a covalently bound proton to the nitrogen moiety, and mixtures thereof; and

wherein said second part consisting essentially of,

a) 0.01%-25% of a surfactant selected from the group consisting of anionic, cationic, nonionic, amphoteric, zwitterionic and mixtures thereof;

b) 10-90% of a builder selected from carbonate, bicarbonate, sesquicarbonate and mixtures thereof;

c) 1-50% of an acid selected from the group consisting of sulfonic acid, dicarboxylic acid, monocarboxylic acid, aminocarboxylic acid and mixtures thereof;

d) optionally, 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;

e) optionally, 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;

f) optionally dyes, fillers, desiccants, solid processing aids, fragrances, preservatives, colorants, anti-corrosion inhibitors, and mixtures thereof; and

g) wherein said second part does not contain any oxidant wherein said oxidant comprises hypochlorite, N-halo compound, peracid, peroxide, peroxygen bleach and mixtures thereof.

14. The composition of claim 13, wherein the water-soluble polymer is a polycarboxylate and the acid in the first and second part is a dicarboxylic acid.

15. The composition of claim 14, wherein the hypochlorite is calcium hypochlorite and the surfactant is anionic.

16. The composition of claim 15, wherein the first part requires a water-swellable polymer.

17. The composition of claim 16, wherein the second part requires a water-soluble polymer.

18. The composition of claim 17, wherein the second part requires a water-swellable polymer.

19. The composition of claim 18, wherein the composition requires a third part wherein said third part is situated between the first part and second part and said third part comprises a component selected from the group consisting of binder, filler, colorant, desiccant, sodium chloride, sodium silicate, sodium sulfate, magnesium sulfate, magnesium carbonate, calcium carbonate, calcium hydroxide, calcium oxide, magnesium oxide, magnesium hydroxide, sodium carbonate, potassium carbonate, sodium bicarbonate, sodium sesquicarbonate, potassium sesquicarbonate, sodium borate, boric acid, aluminum hydroxide, silica and mixtures thereof.

20. A solid-layered composition having at least two parts consisting of a first part and a second part:

wherein said first part consisting of,

a) 0.1%-50% of a hypochlorite selected from the group consisting of calcium hypochlorite, magnesium hypochlorite and mixtures thereof;

b) 20%-60% of a builder selected from carbonate, bicarbonate, sesquicarbonate and mixtures thereof;

c) 0.1%-60% 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) 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

e) 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 consisting of,

a) 0.01%-25% of a surfactant selected from the group consisting of anionic, cationic, nonionic, amphoteric, zwitterionic and mixtures thereof;

b) 10-90% of a builder selected from carbonate, bicarbonate, sesquicarbonate and mixtures thereof;

c) optionally dyes, fillers, desiccants, solid processing aids, fragrances, preservatives, colorants, anti-corrosion inhibitors, 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

d) wherein said second part does not contain any oxidant wherein said oxidant comprises hypochlorite, N-halo compound, peroxygen bleach and mixtures thereof.