Substrate treated with a binder comprising positive or neutral ions

• US 6,667,290 B2
• Filed: 08/12/2002
• Issued: 12/23/2003
• Est. Priority Date: 09/19/2001
• Status: Expired

• Current Assignee: Commun-I-Tec, Ltd.
• Original Assignee: Jeffrey S. Svendsen
• Inventors: Svendsen, Jeffrey S.
• Primary Examiner(s): BOYER, CHARLES I
• Application Number:
  US10/217,294
• Publication Number:
  US 20030054970A1
• Time in Patent Office: 498 Days
• Field of Search: 510/234, 510/237, 510/238, 510/245, 510/254, 510/363, 510/365, 510/382, 510/384, 510/391, 510/504, 510/438
• US Class Current: 510/438
• CPC Class Codes: A01N 2300/00 Combinations or mixtures of active ingredients covered by classes A01N27/00 - A01N65/48 with other active or formulation relevant ingredients, e.g. specific carrier materials or surfactants, covered by classes A01N25/00 - A01N65/48
• 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 33/12 Quaternary ammonium compounds
• CPC Class Codes: A61K 8/0208 Tissues; Wipes; Patches
• CPC Class Codes: A61L 2/16 using chemical substances
• CPC Class Codes: A61L 2/232 layered or coated
• CPC Class Codes: A61L 2/235 cellular, porous or foamed
• CPC Class Codes: A61Q 17/005 Antimicrobial preparations
• CPC Class Codes: C11D 1/62 Quaternary ammonium compounds
• CPC Class Codes: C11D 17/049 Cleaning or scouring pads; Wipes
• CPC Class Codes: C11D 3/48 Medical, disinfecting agents, disinfecting, antibacterial, germicidal or antimicrobial compositions

Abstract

An article for sanitizing a surface with a sanitizing solution while maintaining the concentration level of a sanitizer in the sanitizing solution at an effective concentration level. A substrate that absorbs and holds the sanitizing solution is treated with a sanitizer release polymer composition. The substrate may be a woven, nonwoven, or knit fabric, a foam or sponge, or the like. The sanitizer release polymer composition may include a cationic or nonionic surfactant or binder that is operable to maintain the concentration level of the sanitizer at the effective level during prolonged periods of use.

Claims

1. An article for sanitizing a surface utilizing a sanitizing solution that includes a sanitizer comprising positively charged ions at an effective concentration level, said article comprising:

a substrate that absorbs and holds the sanitizing solution, said substrate having a structure that enables a user to wipe the surface with the substrate, thereby applying the sanitizing solution to the surface; and

an adhesive binder that binds together the structure of the substrate, said binder including positively or neutrally charged ions that provide the substrate with a predominantly positive or neutral charge that prevents the substrate from neutralizing the positively charged ions in the sanitizer when the sanitizer is subsequently applied to the substrate, thereby maintaining the concentration level of the sanitizer at the effective level.

2. The article of claim 1 wherein the article is further treated with a cationic surfactant applied to the surface of the substrate.

3. The article of claim 1 wherein the binder includes the positively or neutrally charged ions in an amount of about 0.1 to about 99 weight percent, based on a total weight of the binder.

4. The article of claim 3 wherein the binder includes the positively or neutrally charged ions in an amount of about 0.5 to about 50 weight percent, based on a total weight of the binder.

5. The article of claim 4 wherein the binder includes the positively or neutrally charged ions in an amount of about 1 to about 10 weight percent, based on a total weight of the binder.

6. The article of claim 2 wherein the cationic surfactant is selected from the group consisting of:

dieicosyldimethyl ammonium chloride;

didocosyldimethyl ammonium chloride;

dioctadecyldimethyl ammonium chloride;

dioctadecyldimethyl ammonium methosulphate;

ditetradecyldimethyl ammonium chloride and naturally occurring mixtures of fatty groups;

di(hydrogenated tallow)dimethyl ammonium metho-sulphate;

ditallow dimethyl ammonium chloride; and

dioleyldimethyl ammonium chloride.

7. The article of claim 2 wherein the article is also treated with a co-surfactant selected from the group consisting of:

a nonionic surfactant;

an anionic surfactant;

an amphoteric surfactant;

a zwitterionic surfactant; and

a semi-polar surfactant.

8. The article of claim 7 wherein the amphoteric surfactant is selected from the group consisting of:

derivatives of secondary and tertiary amines;

derivatives of quaternary ammonium;

quaternary phosphonium; and

tertiary sulfonium compounds.

9. The article of claim 2 wherein the cationic surfactant includes at least one additive agent that provides for improved bonding of the cationic surfactant to the substrate.

10. The article of claim 1 wherein the binder also includes at least one filler.

11. The article of claim 2 wherein the article is also treated with at least one nonionic co-surfactant selected from the group consisting of:

C₆ to C₁₂ alkylphenol ethoxylates;

C₈ to C₂₀ alkanol alkoxylates;

block copolymers of ethylene oxide and propylene oxide;

C₄ to C₁₈ alkyl glucosides; and

alkoxylated products obtainable from C₄ to C₁₈ alkyl glucosides by alkoxylation.

12. The article of claim 1 wherein the article is further treated with a nonionic surfactant applied to the surface of the substrate.

13. The article of claim 12 wherein the nonionic surfactant is selected from the group consisting of:

C₈ to C₁₂ alkylphenol ethoxylates;

C₈ to C₂₀ alkanol alkoxylates;

block copolymers of ethylene oxide and propylene oxide;

C₄ to C₁₈ alkyl glucosides; and

alkoxylated products obtainable from C₄ to C₁₈ alkyl glucosides by alkoxylation.

14. The article of claim 1 wherein the substrate is a nonwoven fabric comprising a multiplicity of strands of material that are bound together by the adhesive binder.

15. The article of claim 1 wherein the substrate is selected from the group consisting of woven fabrics, nonwoven fabrics, knit fabrics, and foams.

16. The article of claim 15 wherein the article is a sanitizing towel utilized to sanitize one of a plurality of areas in a restaurant.

17. A method of manufacturing a substrate, said substrate being utilized with a sanitizing solution that includes a sanitizer comprising positively charged ions, said method comprising the steps of:

selecting an adhesive binder comprising predominantly positively or neutrally charged ions; and

applying the binder to a plurality of loose strands of material to bind the strands together into a web-like structure forming the substrate;

whereby, when the substrate is utilized with the sanitizing solution, the positively or neutrally charged ions in the binder prevent the substrate from neutralizing the positively charged ions in the sanitizer.

18. The method of claim 17 wherein the step of selecting a substrate includes selecting a substrate from the group consisting of woven fabrics, nonwoven fabrics, knit fabrics, and foams.

19. The method of claim 17 further comprising applying a cationic surfactant to the surface of the substrate, said cationic surfactant being selected from the group consisting of:

dieicosyldimethyl ammonium chloride;

didocosyldimethyl ammonium chloride;

dioctadecyldimethyl ammonium chloride;

dioctadecyldimethyl ammonium methosulphate;

ditetradecyldimethyl ammonium chloride and naturally occurring mixtures of fatty groups;

di(hydrogenated tallow)dimethyl ammonium metho-sulphate;

ditallow dimethyl ammonium chloride; and

dioleyldimethyl ammonium chloride.

20. The method of claim 19 wherein the step of applying the cationic surfactant to the surface of the substrate includes the steps of:

mixing a composition in which the cationic surfactant is present in an amount of about 0.1 to about 99 weight percent, based on a total weight of the composition; and

applying the composition to the substrate.

21. The method of claim 20 wherein the step of mixing a composition includes mixing a composition in which the cationic surfactant is present in an amount of about 1 to about 10 weight percent, based on a total weight of the composition.

22. The method of claim 20 wherein the step of applying the composition to the substrate includes the steps of:

diluting the composition with an organic solvent; and

dip coating the substrate in the diluted composition.

23. The method of claim 20 wherein the step of applying the composition to the substrate includes the steps of:

diluting the composition with an organic solvent; and

spray coating the substrate with the diluted composition.

24. The method of claim 20 wherein the step of applying the composition to the substrate includes the steps of:

diluting the composition with an organic solvent; and

foam coating the substrate with the diluted composition.

25. The method of claim 20 wherein the step of applying the composition to the substrate includes the steps of:

diluting the composition with water; and

dip coating the substrate in the diluted composition.

26. The method of claim 20 wherein the step of applying the composition to the substrate includes the steps of:

diluting the composition with water; and

spray coating the substrate with the diluted composition.

27. The method of claim 20 wherein the step of applying the composition to the substrate includes the steps of:

diluting the composition with water; and

foam coating the substrate with the diluted composition.

28. The method of claim 20 further comprising the steps of:

selecting a nonionic co-surfactant for use with the cationic surfactant in the composition; and

mixing the nonionic co-surfactant with the cationic surfactant to form the composition.

29. The method of claim 20 further comprising the steps of:

selecting an additive agent for use with the cationic surtactant in the composition, said additive agent being operable to improve bonding of the cationic surfactant to the substrate; and

mixing the additive agent with the cationic surfactant to form the composition.

30. A combination for sanitizing a surface, said combination comprising:

a liquid sanitizing solution that includes a sanitizer comprising positively charged ions at an effective concentration level;

a substrate that absorbs and holds the sanitizing solution, said substrate having a structure that enables a user to wipe the surface with the substrate, thereby applying the sanitizing solution to the surface; and

an adhesive binder that binds together the structure of the substrate, said binder including positively or neutrally charged ions that provide the substrate with a predominantly positive or neutral charge that prevents the substrate from neutralizing the positively charged ions in the sanitizer when the sanitizer is subsequently applied to the substrate, thereby maintaining the concentration level of the sanitizer at the effective level.

31. The combination of claim 30 wherein the sanitizer in the sanitizing solution is a quaternary ammonium compound (QAC)-based sanitizer.

32. A combination for sanitizing a surface, said combination comprising:

a liquid sanitizing solution that includes a sanitizer comprising positively charged ions at an effective concentration level; and

a cationic or nonionic substrate that absorbs and holds the sanitizing solution, said substrate having a structure that enables a user to wipe the surface with the substrate, thereby applying the sanitizing solution to the surface, said substrate having a cationic surfactant bonded to the surface of the substrate during manufacturing to provide the substrate with a predominantly positive or neutral charge, thereby preventing the substrate from neutralizing the positively charged ions in the sanitizer when the sanitizer is subsequently applied to the substrate.

33. A method of manufacturing an article for sanitizing surfaces, said article being utilized with a sanitizing solution that includes a sanitizer comprising positively charged ions, said method comprising the steps of:

selecting a substrate for the article having a structure suitable for absorbing and holding the sanitizing solution during use;

selecting a cationic surfactant comprising predominantly positively charged ions; and

bonding the cationic surfactant to the surface of the substrate to provide the substrate with a predominantly positive or neutral charge;

whereby, when the article is subsequently utilized with the sanitizing solution, the positively or neutrally charged substrate prevents the article from neutralizing the positively charged ions in the sanitizer.