Pre-moistened wipe comprising polymeric biguanide for treating a surface

• US 20050054257A1
• Filed: 09/23/2004
• Published: 03/10/2005
• Est. Priority Date: 09/27/1999
• Status: Active Grant

• Current Assignee: The Procter & Gamble Company
• Original Assignee: The Procter & Gamble Company
• Inventors: Sherry, Alan Edward, Barnabas, Mary Vijayarani, Wolff, Ann Margaret
• Granted Patent: US 7,417,000 B2
• Time in Patent Office: Days
• US Class Current: 442/408
• CPC Class Codes: A47L 13/20 Mops
• CPC Class Codes: A47L 13/22 with liquid-feeding devices
• CPC Class Codes: A47L 13/256 for mops made of cloth
• CPC Class Codes: A47L 13/51 Storing of cleaning tools, e.g. containers therefor
• CPC Class Codes: B05B 9/0861 the motor being electric
• CPC Class Codes: B05B 9/0866 the pump being a gear, centrifugal or screw-type pump
• CPC Class Codes: C11D 1/662 Carbohydrates or derivatives
• CPC Class Codes: C11D 1/72 Ethers of polyoxyalkylene glycols
• CPC Class Codes: C11D 1/825 Mixtures of compounds all of which are non-ionic
• CPC Class Codes: C11D 17/049 Cleaning or scouring pads; Wipes
• CPC Class Codes: C11D 3/2082 Polycarboxylic acids-salts thereof
• CPC Class Codes: C11D 3/2086 Hydroxy carboxylic acids-salts thereof
• CPC Class Codes: C11D 3/323 urea or derivatives thereof
• CPC Class Codes: C11D 3/3723 Polyamines or polyalkyleneimines
• CPC Class Codes: C11D 3/3792 Amine oxide containing polymers
• CPC Class Codes: C11D 3/43 Solvents
• CPC Class Codes: C11D 3/48 Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions
• CPC Class Codes: Y10T 442/2484 Coating or impregnation is water absorbency-increasing or hydrophilicity-increasing or hydrophilicity-imparting
• CPC Class Codes: Y10T 442/2525 Coating or impregnation functions biologically [e.g., insect repellent, antiseptic, insecticide, bactericide, etc.]
• CPC Class Codes: Y10T 442/689 Hydroentangled nonwoven fabric
• CPC Class Codes: Y10T 442/692 : Containing at least two chemically different strand or fiber materials

Abstract

The present invention relates to a pre-moistened wipe for treating a surface, said pre-moistened wipe comprising: (a) a substrate; wherein said substrate is substantially free of a binder or latex material and said; and (b) a composition applied to said substrate, said composition having (i) a pH of about 7 or less and comprising (ii) at least about one surfactant; and (iii) a polymeric biguanide.

Claims

1. A pre-moistened wipe for treating a surface, said pre-moistened wipe comprising:

(a) a substrate;

wherein said substrate is substantially free of a binder or latex material; and

(b) an aqueous composition applied to said substrate, said composition having a pH of about 7 or less; and

comprising;

(i) at least one surfactant; and

(ii) a polymeric biguanide.

2. The pre-moistened wipe of claim 1 wherein said substrate is made by a hydroentangling process.

3. The pre-moistened wipe of claim 1 wherein said surfactant is an alkyl polyglycoside, wherein said substrate comprises at least about 50% synthetic fibers by weight and wherein the pH of said composition is from about 5 to about 7.

4. The pre-moistened wipe of claim 1 wherein said composition comprises an organic acid.

5. The pre-moistened wipe of claim 4 wherein said organic acid is selected from the group consisting of citric acid, lactic acid, tartaric acid and mixtures thereof.

6. The pre-moistened wipe of claim 5 wherein said organic acid is citric acid.

7. The pre-moistened wipe of claim 1 wherein said surfactant is a low-residue surfactant.

8. The pre-moistened wipe of claim 7 wherein said low-residue surfactant is selected from the group consisting of zwitterionic, amphoteric surfactants, non-ionic surfactants comprising at least one sugar moiety and mixtures thereof.

9. The pre-moistened wipe of claim 8 wherein said low-residue surfactant is selected from the group consisting of sulfobetaines, ampho glycinates, ampho propionates, betaines, poly alkyl glycosides, sucrose esters and mixtures thereof.

10. The pre-moistened wipe of claim 9 wherein said low-residue surfactant is selected from the group consisting of sulfobetaines, poly alkyl glycosides, and mixtures thereof.

11. The pre-moistened wipe of claim 1 wherein said surfactant is selected from the group consisting of alkyl ethoxylates, capped alkyl ethoxylates and mixtures thereof, wherein said surfactant comprises from about 8 to about 18 carbon atoms in the hydrophobic chain-length, and an average of about 1 to about 15 ethoxy moieties per surfactant molecule.

12. The pre-moistened wipe of claim 1 wherein said polymeric biguanide is selected from the group consisting of oligo- hexamethylene biguanide, poly-hexamethylene biguanide, salts thereof and a mixture thereof.

13. The pre-moistened wipe of claim 12 wherein said polymeric biguanide is poly (hexamethylene biguanide) hydrochloride.

14. The pre-moistened wipe of claim 1 wherein the level of said acidifying agent is from about 0.01% to about 3% by weight;

the level of said surfactant is from about 0.01% to about 1.5% by weight;

the level of said polymeric biguanide is from about 0.01% to about 2% by weight; and

the pH of said composition is from about 0.5 to about 7.

15. The pre-moistened wipe of claim 14 wherein the level of said acidifying agent is from about 0.05% to about 2% by weight;

the level of said surfactant is from about 0.01% to about 1.0% by weight;

the level of polymeric biguanide is from about 0.01% to about 1.0% by weight; and

the pH of said composition is from about 2.0 to about 5.5.

16. The pre-moistened wipe of claim 15 wherein the level of said acidifying agent is from about 0.1% to about 1% by weight;

the level of surfactant is from about 0.01% to about 0.5% by weight;

the level of said polymeric biguanide is from about 0.02% to about 0.75% by weight; and

the pH of the aqueous composition is from about 2.5 to about 5.

17. The pre-moistened wipe of claim 1 wherein the total level of solids does not exceed about 3% by weight of said composition.

18. A pre-moistened wipe according to claim 1 that further comprising from about 0.5% to about 25% by weight of a solvent.

19. The pre-moistened wipe of claim 18 wherein said solvent has a vapour pressure of about 6.66 Pa (about 0.05 mm Hg at 25°

C. and atmospheric pressure).

20. The pre-moistened wipe of claim 1 that further comprising an hydrotrope.

21. The pre-moistened wipe of claim 20 wherein said hydrotrope is an alkyl ethoxylates comprising from about 8 to about 18 carbon atoms in the hydrophobic group and at least an average of about 15 ethoxylate groups per hydrophobic group.

22. The pre-moistened wipe of claim 1 wherein said substrate is loaded at a factor of from about 1 gram of aqueous solution per gram of substrate to about 10 grams of aqueous solution per gram of substrate.

23. The pre-moistened wipe of claim 1 wherein said substrate comprises an homogeneous blend of synthetic and non-synthetic fibers.

24. The pre-moistened wipe of claim 1 wherein said substrate comprises a non-homogeneous blend of fibers such that at least one of the visible surface areas of the substrate has a significantly higher synthetic content than the overall substrate composition.

25. The pre-moistened wipe of claim 1 wherein the synthetic content by weight of the overall substrate is at least about 20% preferably at least about 30%.

26. The pre-moistened wipe of claim 25 wherein said synthetic material is selected from the group consisting of polyethylene, polypropylene, polyester and mixtures thereof.

27. The pre-moistened wipe of claim 1, wherein said composition provides antimicrobial benefits.

28. A method of cleaning a surface, comprising the steps of:

contacting said surface with a pre-moistened wipe according to claim 1, and wiping said surface with said wipe.