Intercalated bleach compositions, related methods of manufacture and use

• US 9,074,164 B2
• Filed: 10/09/2013
• Issued: 07/07/2015
• Est. Priority Date: 10/09/2013
• Status: Active Grant

• Current Assignee: Clorox Company
• Original Assignee: Clorox Company
• Inventors: Rumberger, Evan, Macnaughtan, Marisa, Smith, William L., Kornaus, Kelsey
• Primary Examiner(s): Delcotto, Gregory R
• Application Number:
  US14/050,085
• Publication Number:
  US 20150097141A1
• Time in Patent Office: 636 Days
• Field of Search: 510/302, 510/303, 510/380, 510/445, 510/446, 510/435, 510/509
• US Class Current: 1/1
• CPC Class Codes: A01N 25/08 containing solids as carriers or diluents
• CPC Class Codes: A01N 25/34 Shaped forms, e.g. sheets, not provided for in any other sub-group of this main group
• CPC Class Codes: A01N 59/06 Aluminium; Calcium; Magnesium; Compounds thereof
• CPC Class Codes: C01B 11/064 Hypochlorites of alkaline-earth metals
• CPC Class Codes: C01B 11/066 Magnesium hypochlorite
• CPC Class Codes: C11D 1/00 Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
• CPC Class Codes: C11D 17/0073 Tablets
• CPC Class Codes: C11D 17/041 Compositions releasably affixed on a substrate or incorporated into a dispensing means
• CPC Class Codes: C11D 17/06 Powder; Flakes; Free-flowing mixtures; Sheets
• CPC Class Codes: C11D 3/04 Water-soluble compounds
• CPC Class Codes: C11D 3/042 Acids
• CPC Class Codes: C11D 3/044 Hydroxides or bases
• CPC Class Codes: C11D 3/046 Salts
• CPC Class Codes: C11D 3/08 Silicates
• CPC Class Codes: C11D 3/10 Carbonates ; Bicarbonates
• CPC Class Codes: C11D 3/12 Water-insoluble compounds
• CPC Class Codes: C11D 3/1213 Oxides or hydroxides, e.g. Al2O3, TiO2, CaO or Ca(OH)2
• CPC Class Codes: C11D 3/3757 (Co)polymerised carboxylic acids, -anhydrides, -esters in solid and liquid compositions
• CPC Class Codes: C11D 3/3953 Inorganic bleaching agents C11D3/3951 takes precedence
• CPC Class Codes: C11D 3/3956 Liquid compositions
• CPC Class Codes: C11D 3/50 : Perfumes

Abstract

The invention relates to compositions, methods of use, and methods of manufacture for an intercalated bleach compound and compositions thereof. The intercalated bleach compound has the formula M_x(OCl)_y(O)_m(OH)_n where M is an alkaline earth metal such as magnesium, calcium or mixture thereof. The values of x and y independently equal any number greater than or equal to 1 (e.g., 1, 2, 3, 4, etc.), and m and n independently equal any number greater than or equal to 0 (e.g., 0, 1, 2, 3, 4, etc.), but m and n are not both 0. In addition, the molar ratio of the alkaline earth metal (e.g., magnesium or calcium) to hypochlorite is at least 3:1. In other words, x is ≧3y. The compounds exhibit excellent stability, little or no chlorine bleach odor, exhibit excellent pH buffering characteristics, and less reactivity with organic materials as compared to alternative chlorine bleach products.

Claims

1. A method of using a bleach composition, the method comprising:

(a) providing a bleach composition comprising a bleach compound having the formula;

M_x(OCl)_y(O)_m(OH)_n

wherein M is selected from the group consisting of magnesium, calcium and mixtures thereof;

wherein x and y independently equal any number greater than or equal to 1;

wherein m and n independently equal any number greater than or equal to 0, but m and n are not both 0; and

wherein x is ≧

3y; and

(b) contacting the bleach composition with a surface or material wherein the bleach composition treats the surface or material.

2. The method of claim 1, wherein M is Mg a magnesium.

3. The method of claim 1, wherein M is Ca a calcium.

4. The method of claim 1, wherein the bleach composition further comprises a surfactant.

5. The method of claim 1, wherein the bleach composition further comprises an acid.

6. The method of claim 1, wherein the bleach composition further comprises one or more alkaline earth metal salts or alkali metal salts.

7. The method of claim 6, wherein alkali metal salts or alkaline earth metal salts are selected from the group consisting of alkaline earth oxides, alkaline earth hydroxides, alkaline earth carbonates, alkaline earth bicarbonates, alkaline earth chlorides, alkali chlorides, alkali carbonates, alkali bicarbonates, and combinations thereof.

8. The method of claim 7, wherein alkali metal salts or alkaline earth metal salts are selected from the group consisting of magnesium oxide, magnesium hydroxide, magnesium chloride trihydroxide, magnesium chloride pentahydroxide, magnesium carbonate, magnesium chloride, calcium oxide, calcium hydroxide, calcium carbonate, calcium chloride, sodium chloride, sodium carbonate, sodium bicarbonate, and combinations thereof.

9. The method of claim 1, wherein 2m+n≧

5y.

10. The method of claim 1, wherein x=0.5y+m+0.5n.

11. The method of claim 1, wherein x, y, m, and n are integers.

12. The method of claim 1, wherein the bleach compound has a range of available chlorine from about 3% to about 25%.

13. The method of claim 1, wherein the bleach compound is a hydrate.

14. The method of claim 1, wherein the bleach composition further comprises at least one member selected from the group consisting of builders, surfactants, water soluble polymers, acids, fillers, diluents, desiccants, buffers, solid processing aids, preservatives, colorants, anti-corrosion inhibitors, dyes, fragrances, hydrotropes, polymer dispersants, chelating agents, water-swellable polymers, disinfectants, antimicrobials, essential oils, enzymes, and combinations thereof.

15. The method of claim 1, wherein the bleach composition is a solid.

16. The method of claim 15, wherein the bleach composition is in powder, granule, or tablet form.

17. A method of using a bleach composition, the method comprising:

(a) providing a bleach composition comprising a bleach compound having the formula;

Mg_x(OCl)_y(O)_m(OH)_n

wherein x and y independently equal any number greater than or equal to 1;

wherein m and n independently equal any number greater than or equal to 0, but m and n are not both 0; and

wherein x is ≧

3y; and

(b) contacting the bleach composition with a surface or material wherein the bleach composition treats the surface or material.

18. The method of claim 17, wherein the bleach composition further comprises an acid.

19. A method of using a bleach composition, the method comprising:

(a) providing a bleach composition comprising;

a surfactant; and

a bleach compound having the formula;

Mg_x(OCl)_y(O)_m(OH)_n

wherein x and y independently equal any number greater than or equal to 1;

wherein m and n independently equal any number greater than or equal to 0, but m and n are not both 0; and

wherein x is ≧

3y; and

(b) contacting the bleach composition with a surface or material wherein the bleach composition treats the surface or material.

20. The method of claim 19, wherein the bleach composition further comprises an acid.