Colorant neutralizer

Patent metadata

Field	Value
Publication number	US-9657257-B2
Application number	US-80161207-A
Country	US
Kind code	B2
Filing date	May 10, 2007
Priority date	May 10, 2007
Publication date	May 23, 2017
Grant date	May 23, 2017

Abstract

A composition for a medium that can discharges organic unsaturated colorant molecules that may stain is described. The composition can quickly and effectively neutralize a discoloration that results from, in particular, blood or blood-based, ink, or grease stains. The composition can remove the stain within, typically about 20-30 minutes, and can achieve color contrast of a ΔE value of about 15-20 or greater. The composition can be adapted for different uses and embodied in various cleaning, stain-fighting, cosmetic, personal hygiene, or medical products.

First claim

We claim:

1. A composition for discharging blood stains, the composition comprising: an aqueous or other polar solvent-based solution containing about 0.01% to about 95% by volume of a unsaturated aliphatic acid or ester, said aliphatic acid or ester molecule having a carbon chain of at least C 8 or greater, and more than one carbon-carbon double bond; an oxidative catalyst; and a cell-lysing agent, wherein said unsaturated aliphatic acid or ester and cell lysing agent, when present, are present in amounts expressed as a ratio ranging from about 1:1 up to about 30:1, respectively.

2. The composition according to claim 1 , wherein said carbon double bonds are conjugated.

3. The composition according to claim 1 , wherein said oxidative catalyst is an oxidizing agent, a peroxide or cyclic peroxide molecule.

4. The composition according to claim 3 , wherein said oxidizing agent is present in an amount from about 0.02% to about 1% by volume.

5. The composition according to claim 1 , wherein said aliphatic acid or ester includes at least one of the following: linoleic acid; alpha-linolenic acid; eicosadienoic acid; eicosatrienoic acid; arachidonic acid (also known as eicosatetraenoic acid); eicosapentaenoic acid; or docosahexaenoic acid.

6. The composition according to claim 1 , wherein the unsaturated aliphatic acid is present as an ester component of natural seed oils.

7. The composition according to claim 6 , wherein the natural seed oil is selected from safflower, grape or pumpkin or soybean, or linseed, or peanut, or poppy, or perilla or a mixture thereof.

8. The composition according to claim 1 , wherein said cell lysing agent is selected from a surfactant, alcohol, base, self-heating agent, quaternary ammonium compounds, and non-isotonic solutions.

9. The composition according to claim 1 , wherein said unsaturated aliphatic acid or ester and cell lysing agent are present in amounts expressed as a ratio ranging from about 1:5 up to about 25:1, respectively.

10. The composition according to claim 1 , wherein said unsaturated aliphatic acid or ester and cell lysing agent are present in amounts expressed as a ratio ranging from about 1:7 up to about 20:1, respectively.

11. The composition according to claim 1 , wherein said blood stain is discharged within a period of about 60 minutes or less.

12. The composition according to claim 11 , wherein said blood stain is discharged within about 15 minutes.

13. The composition according to claim 11 , wherein said blood stain is discharged within about 3 minutes.

14. The composition according to claim 1 , wherein the color of the stain is reduced by a ΔE of ≧5.

15. The composition according to claim 1 , wherein the color of the stain is reduced by at least a ΔE value of 20.

16. The composition according to claim 1 , wherein said composition is embodied in an aerosol, a liquid, a gel, a paste, or a solid form.

17. The composition according to claim 16 , wherein said gel or solid form is either shear thinning or temperature responsive, which transforms to a liquid during application.

18. The composition according to claim 1 , wherein said composition is used on surfaces of woven and nonwoven fabrics, clothing, skin, fur, carpet, walls, enamel, glass, metal, or agar and growth media.

19. The composition according to claim 1 , wherein said composition discharges the color of blood or menses.

20. The composition according to claim 1 , wherein said composition is used in bandages, medical patches, wraps, personal absorbent articles, medical drapes, meat trays and pads, and garments.

21. A blood stain-fighting product comprising:
an aqueous or polar-solvent based solution of polyunsaturated fatty acids and a cell-lysing agent in amounts expressed as a ratio ranging from about 1:5, up to about 30:1 respectively; and
an oxidizing agent in an amount of 0.02% to 1% by volume, and which produces an observable color change in which a stain is reduced by at least a ΔE value of 5.

22. The stain-fighting product according to claim 21 , wherein said oxidizing agent includes either peroxide or cyclic peroxide molecules.

23. The stain-fighting product according to claim 22 , wherein said oxidizing agent is present in an amount from about 0.15-0.55% by volume.

24. The stain-fighting product according to claim 21 , wherein said polyunsaturated fatty acid includes at least one of the following: a) linoleic acid (C 18 :2); b) alpha-linolenic acid (C 18 :3); c) arachidonic acid (C 20 :4); d) eicosapentaenoic acid (C 20 :5); docosahexaenoic acid (C 22 :6); eicosadienoic acid (C 20 :2); f) eicosatrienoic acid (C 20 :3); g) a combination thereof.

25. The stain-fighting product according to claim 21 , wherein said fatty acids are present as esters of alkyl alcohols (C1-C8), cyclic aliphatic alcohols, aromatic alcohols, glycerides, glycols (diols), polyvinyl alcohols, or polyethers.

26. The stain-fighting product according to claim 21 , wherein said cell-lysing agent includes a surfactant.

27. The stain-fighting product according to claim 21 , wherein said fatty acids and cell lysing agent are present in amounts expressed as a ratio ranging from about 1:7 up to about 25:1, respectively.

28. The stain-fighting product according to claim 21 , wherein said surfactant is present at about 1-10% concentration, or 5-20% by volume of polyunsaturated aliphatic acid or ester.

Assignees

• Macdonald John Gavin
• Smith Molly K
• Yang Shu-Ping
• Kimberly Clark Co

Inventors

• Macdonald John Gavin
• Smith Molly K
• Yang Shu-Ping

Classifications

• A61C19/02

  Protective casings, e.g. boxes for instruments; Bags {(A61C5/44 takes precedence)} · CPC title

• C11D3/2093

  Esters; Carbonates · CPC title

• C11D3/2079

  Monocarboxylic acids-salts thereof · CPC title

• A61C11/00 Primary

  Dental articulators, i.e. for simulating movement of the temporo-mandibular joints; Articulation forms or mouldings · CPC title

• A61K8/361

  Carboxylic acids having more than seven carbon atoms in an unbroken chain; Salts or anhydrides thereof · CPC title