Composition for aesthetic improvement of food and beverage containers and methods thereof

Patent metadata

Field	Value
Publication number	US-11028344-B2
Application number	US-201716324617-A
Country	US
Kind code	B2
Filing date	Aug 15, 2017
Priority date	Aug 16, 2016
Publication date	Jun 8, 2021
Grant date	Jun 8, 2021

Abstract

A composition for use in recycled food and beverage containers is disclosed. A mixture of a strong sequestrant, a weak sequestrant, a polymer, an antiscalant and a surfactant is disclosed. Methods directed to using the composition are also disclosed. A composition that cleans and also reduces the defects present on the external surface of containers during a wash cycle is disclosed. The composition may or may not have metallic salts.

First claim

We claim:

1. A composition for cleaning and reducing surface defects on beverage containers, the composition comprising:
5 wt % to 15 wt % of a salt of methylglycine diacetic acid;
5 wt % to 15 wt % of sodium gluconate;
0.1 wt % to 20 wt % of at least one ingredient selected from an acrylate/maleate copolymer, a zinc salt, or mixtures thereof;
0.1 wt % to 5 wt % of at least one antiscalant selected from aminotris(methylenephosphonic acid), 1-hydroxyethylidene-1,1-diphosphonic acid, or mixtures thereof; and
0.1 wt % to 10 wt % of at least one surfactant selected from an ethylene oxide/propylene oxide block copolymer, an alkoxylated primary or secondary alcohol, or mixtures thereof.

2. The composition of claim 1 , wherein the salt of methylglycine diacetic acid is sodium salt of methylglycine diacetic acid.

3. The composition of claim 1 , wherein the at least one antiscalant is 1-hydroxyethylidene-1,1-diphosphonic acid.

4. The composition of claim 1 , wherein the zinc salt is zinc chloride.

5. The composition of claim 1 , wherein the at least one ingredient is an acrylate/maleate copolymer and a zinc salt.

6. A method of preparing the composition of claim 1 , the method comprising:
stirring a solvent in a container;
adding the salt of methylglycine diacetic acid and the sodium gluconate;
mixing the composition until the salt of methylglycine diacetic acid and the sodium gluconate are dissolved;
adding the antiscalant while mixing the composition;
adjusting the pH of the composition until it becomes neutral;
adding the at least one ingredient while mixing the composition;
adding the at least one surfactant; and
mixing the composition for 1 second to 30 minutes.

7. A method of cleaning beverage containers, the method comprising:
mixing the composition of claim 1 for 1 second to 30 minutes;
transferring the composition to at least one beverage container; and
coating at least one beverage container with the composition.

8. The composition of claim 1 , wherein the salt of methylglycine diacetic acid is sodium salt of methylglycine diacetic acid; the zinc salt is zinc chloride; the at least one antiscalant is 1-hydroxyethylidene-1,1-diphosphonic acid; and the at least one surfactant is an ethylene oxide/propylene oxide block copolymer.

9. The composition of claim 8 , wherein the sodium salt of methylglycine diacetic acid is present at an amount of 10 wt %; the sodium gluconate is present at an amount of 11.37 wt %; the acrylate/maleate copolymer is present at an amount of 2.5 wt %; the 1-hydroxyethylidene-1,1-diphosphonic acid is present at an amount of 5 wt %; and the ethylene oxide/propylene oxide block copolymer is present at an amount of 8 wt %.

10. The composition of claim 9 , further comprising 0.024 wt % 1,2-benzisothiazolin-3-one; 16 wt % sodium cumene sulphonate; and 47.106 wt % water.

11. The composition of claim 8 , wherein the sodium salt of methylglycine diacetic acid is present at an amount of 10 wt %; the sodium gluconate is present at an amount of 11.37 wt %; the acrylate/maleate copolymer is present at an amount of 2 wt %; the zinc chloride is present at an amount of 1.77 wt %; the 1-hydroxyethylidene-1,1-diphosphonic acid is present at an amount of 5 wt %; the ethylene oxide/propylene oxide block copolymer is present at an amount of 8 wt %; and further comprising caustic lye at an amount of 2.5 wt %.

12. The composition of claim 11 , further comprising 0.024 wt % 1,2-benzisothiazolin-3-one; 16 wt % sodium cumene sulphonate; and 43.336 wt % water.

13. A composition for cleaning and reducing surface defects on beverage containers, the composition consisting of:
2.5 wt % to 40 wt % of at least one strong sequestrant;
2.5 wt % to 40 wt % of sodium gluconate;
0.1 wt % to 20 wt % of a polymer, a metallic salt, or both;
0.1 wt % to 5 wt % of at least one antiscalant;
0.1 wt % to 10 wt % of at least one surfactant;
optionally, 0.1 wt % to 5 wt % of an alkali;
optionally, a preservative;
optionally, a hydrotrope; and
optionally, a solvent.

14. The composition of claim 13 , wherein the at least one strong sequestrant is sodium salt of methylglycine diacetic acid; the polymer is acrylate/maleate copolymer; the metallic salt is zinc chloride; the at least one antiscalant is 1-hydroxyethylidene-1,1-diphosphonic acid; the at least one surfactant is an ethylene oxide/propylene oxide block copolymer; the alkali is caustic lye; the preservative is an isothiazolinone; the hydrotrope is sodium cumene sulphonate or sodium xylene sulphonate; and the solvent is water.

15. The composition of claim 14 , consisting of the sodium salt of methylglycine diacetic acid; the sodium gluconate; the acrylate/maleate copolymer; the 1-hydroxyethylidene-1,1-diphosphonic acid; the ethylene oxide/propylene oxide block copolymer; the isothiazolinone; the sodium cumene sulphonate; and the water.

16. The composition of claim 14 , consisting of the sodium salt of methylglycine diacetic acid; the sodium gluconate; the acrylate/maleate copolymer; the zinc chloride; the 1-hydroxyethylidene-1,1-diphosphonic acid; the ethylene oxide/propylene oxide block copolymer; the caustic lye; the isothiazolinone; the sodium cumene sulphonate; and the water.

17. The composition of claim 1 , wherein the composition has a neutral pH.

18. The composition of claim 1 , comprising 9 wt % to 11 wt % of the salt of methylglycine diacetic acid and 10 wt % to 12 wt % of the sodium gluconate.

19. The composition of claim 1 , comprising
5 wt % to 15 wt % of the salt of methylglycine diacetic acid;
5 wt % to 15 wt % of the sodium gluconate;
1 wt % to 5 wt % of the at least one ingredient;
1 wt % to 5 wt % of the at least one antiscalant; and
5 wt % to 10 wt % of at the least one surfactant.

20. The composition of claim 8 , comprising
5 wt % to 15 wt % of the sodium salt of methylglycine diacetic acid;
5 wt % to 15 wt % of the sodium gluconate;
1 wt % to 5 wt % of the at least one ingredient;
1 wt % to 5 wt % of the 1-hydroxyethylidene-1,1-diphosphonic acid; and
5 wt % to 10 wt % of at the ethylene oxide/propylene oxide block copolymer.

Assignees

• Diversey Inc

Inventors

• Chaudhari Uday
• Chaudhari Kedar

Classifications

• C11D3/362

  Phosphates or phosphites · CPC title

• C11D3/33 Primary

  Amino carboxylic acids · CPC title

• C11D3/3765

  in liquid compositions · CPC title

• C11D11/0094

  Process for making liquid detergent compositions, e.g. slurries, pastes or gels · CPC title

• C11D3/364

  containing nitrogen · CPC title