Hypochlorite denture compositions and methods of use

• US 8,486,879 B2
• Filed: 12/19/2012
• Issued: 07/16/2013
• Est. Priority Date: 12/09/2008
• Status: Active Grant

• Current Assignee: Clorox Company
• Original Assignee: Clorox Company
• Inventors: Rumberger, Evan, Smith, William L.
• Primary Examiner(s): ANTHONY, JOSEPH DAVID
• Application Number:
  US13/720,743
• Publication Number:
  US 20130109608A1
• Time in Patent Office: 209 Days
• Field of Search: 252/187.27, 252/187.28, 252/187.29, 252/187.3, 252/186.37, 510/116, 510/117, 510/298, 510/302, 510/349, 510/380, 510/446, 422/28, 422/29
• US Class Current: 510/116
• CPC Class Codes: A61K 8/022 Powders; Compacted Powders
• CPC Class Codes: A61K 8/20 Halogens; Compounds thereof
• CPC Class Codes: A61K 8/362 Polycarboxylic acids
• CPC Class Codes: A61P 31/00 Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
• CPC Class Codes: A61Q 11/02 Preparations for deodorising, bleaching or disinfecting dentures
• CPC Class Codes: C11D 1/22 derived from aromatic compounds
• CPC Class Codes: C11D 17/0073 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 3/3409 Alkyl -, alkenyl -, cycloalkyl - or terpene sulfates or sulfonates
• 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 3/37 Polymers polymeric surface-active agents C11D1/008; polysaccharides C11D3/222
• 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

A solid composition including calcium and/or magnesium hypochlorite, a builder (e.g., one or more of carbonate, bicarbonate, sesquicarbonate), an acid, a water-soluble polymer, at least one anionic surfactant, and optionally, a hydrotrope. The composition does not include any potassium hypochlorite, sodium hypochlorite, lithium hypochlorite, N-halogenated compounds, peroxides, persulfates, hydantoins, isocyanurates, or carboxylic acids that also have hydroxyl, amino, amido, imino, or imido groups. Upon dissolution of the composition in water, the calcium and/or magnesium hypochlorite and acid react to form hypochlorous acid. The use of hypochlorous acid, rather than direct use of an alkaline or alkaline earth hypochlorite results in a composition that is typically acidic rather than basic, and that results in improved cleaning. The composition is particularly suited for cleaning and disinfecting dentures.

Claims

1. A solid, one-layered composition comprising:

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

ii. a builder selected from the group consisting of carbonate, bicarbonate, sesquicarbonate and mixtures thereof;

iii. at least 30% by weight of an acid selected from the group consisting of a carboxylic acid, a dicarboxylic acid, a sulfonic acid, an acid sulfate, an acid phosphate, and mixtures thereof;

iv. a water-soluble polymer selected from the group consisting of a polycarboxylate, a sulfonated carboxylate, a polysulfonate, a polyvinylpyrrolidone, a polypyridinium salt, a polyquaternary ammonium salt, and mixtures thereof; and

wherein the composition does not contain potassium hypochlorite, sodium hypochlorite, lithium hypochlorite, N-halogenated compounds, peroxides, persulfates, hydantoins, isocyanurates, carboxylic acids that also have hydroxyl, amino, amido, imino, or imido groups;

wherein the composition contains only one layer.

2. The composition of claim 1, wherein the hypochlorite is the calcium hypochlorite and the calcium hypochlorite comprises less than 50% by weight of the composition.

3. The composition of claim 1, wherein the acid comprises at least 50% by weight of the composition.

4. The composition of claim 1, wherein the acid is the dicarboxylic acid.

5. The composition of claim 1, wherein the water-soluble polymer is the polycarboxylate, and where the carboxylate ions for the polycarboxylate are derived from the group consisting of maleic acid, acrylic acid, methacrylic acid and mixtures thereof.

6. The composition of claim 1, further comprising at least one hydrotrope.

7. The composition of claim 6, wherein the hydrotrope is a salt selected from the group consisting of a toluene sulfonate, a cumene sulfonate, a xylene sulfonate, a naphthalene sulfonate, a methyl naphthalene sulfonate, and mixtures thereof.

8. The composition of claim 7, wherein the composition does not contain enzymes, waxes, resins, nonionic surfactants, chlorite salts, or chlorine dioxide.

9. The composition of claim 1, further comprising at least one anionic surfactant.

10. A solid, one-layered composition consisting essentially of:

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

ii. a builder selected from the group consisting of carbonate, bicarbonate, sesquicarbonate and mixtures thereof;

iii. at least 30% by weight of an acid selected from the group consisting of a carboxylic acid, a dicarboxylic acid, a sulfonic acid, an acid sulfate, an acid phosphate, and mixtures thereof;

iv. a water-soluble polymer selected from the group consisting of a polycarboxylate, a sulfonated carboxylate, a polysulfonate, a polyvinylpyrrolidone, a polypyridinium salt, a polyquaternary ammonium salt, and mixtures thereof;

v. at least one hydrotrope; and

vi. optionally, a cobuilder selected from the group consisting of a hydroxide, an oxide, a silicate, a phosphate, a borate and mixtures thereof; and

vii. optionally, colorants, perfumes, sequestrants, anti-corrosion agents, lubricants, binders, fillers, disintegration aids, preservatives, desiccants, and mixtures thereof.

11. The composition of claim 10, wherein the composition does not comprise any potassium hypochlorite, sodium hypochlorite, lithium hypochlorite, N-halogenated compounds, peroxides, persulfates, hydantoins, isocyanurates, carboxylic acids that have hydroxyl, amino, amido, imino, or imido group, enzymes, waxes, resins, or nonionic surfactants.

12. The composition of claim 10, wherein the hypochlorite is calcium hypochlorite and the calcium hypochlorite comprises less than 50% by weight of the composition.

13. The composition of claim 10, further comprising at least one anionic surfactant.

14. The composition of claim 10, wherein the acid is a dicarboxylic acid.

15. The composition of claim 10, wherein the water-soluble polymer is a polycarboxylate, and where the carboxylate ions for the polycarboxylate are derived from the group consisting of maleic acid, acrylic acid, methacrylic acid and mixtures thereof.

16. The composition of claim 10, wherein the hydrotrope is a salt selected from the group consisting of a toluene sulfonate, a cumene sulfonate, a xylene sulfonate, a naphthalene sulfonate, methyl naphthalene sulfonate, and mixtures thereof.