Skin cleansing composition incorporating anionic particles

• US 6,764,988 B2
• Filed: 04/18/2001
• Issued: 07/20/2004
• Est. Priority Date: 04/18/2001
• Status: Expired due to Fees

• Current Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Original Assignee: Kimberly-Clark Worldwide Incorporated (Kimberly-Clark Corporation)
• Inventors: Koenig, David William, Minerath, Bernard J., Williamson, Bruce Scott, Lange, Beth Anne
• Primary Examiner(s): BOYER, CHARLES I
• Application Number:
  US09/837,628
• Publication Number:
  US 20020183216A1
• Time in Patent Office: 1,189 Days
• Field of Search: 510/130, 510/138, 510/139, 510/471
• US Class Current: 510/130
• CPC Class Codes: A61K 2800/28 Rubbing or scrubbing compositions; Peeling or abrasive compositions; Containing exfoliants
• CPC Class Codes: A61K 8/0208 Tissues; Wipes; Patches
• CPC Class Codes: A61K 8/027 Fibers; Fibrils
• CPC Class Codes: A61K 8/731 Cellulose; Quaternized cellulose derivatives
• CPC Class Codes: A61Q 19/10 Washing or bathing preparations

Abstract

Novel skin cleansing formulations are disclosed herein. The formulations comprise an anionic particles, microfibers, or compounds which dislodge contaminants from skin through electrostatic interactions. The anionic particles, compounds, or microfibers can easily be incorporated into various products for improved skin cleaning and removal of the contaminant from the skin. The anionic particles do not necessarily kill microbes on the skin, but dislodge them from the skin surface such that they and other contaminants can easily be removed away from the skin by a substrate.

Claims

1. A wet wipe comprising a fibrous sheet material and a cleansing solution capable of dislodging contaminants from skin, the cleansing solution comprising from about 0.001 mg/(mL of cleansing solution) to about 10 mg/(mL of cleansing solution) of anionic particles having a diameter of from about 0.1 micrometers to about 10 micrometers, the anionic particles having an effective charge density of from about 0.1 microequivalents/g to about 500 milliequivalents/g, wherein the anionic particles are selected from the group consisting of cellulose carbonate, carboxymethyl chitin, carboxymethyl chitosan, carboxymethyl curdlan, carboxymethyl alpha-cyclodextrin, carboxymethyl beta-cyclodextrin, carboxymethyl dextran, and carboxymethylcellulose.

2. The wet wipe as set forth in claim 1 wherein the cleansing solution comprises from about 0.01 mg/(mL of cleansing solution) to about 5 mg/(mL of cleansing solution) of the anionic particles.

3. The wet wipe as set forth in claim 1 wherein the cleansing solution comprises from about 0.01 mg/(mL of cleansing solution) to about 0.25 mg/(mL of cleansing solution) of the anionic particles.

4. The wet wipe as set forth in claim 1. wherein the cleansing solution comprises from about 0.01 mg/(mL of cleansing solution) to about 0.1 mg/(mL of cleansing solution) of the anionic particles.

5. The wet wipe as set forth in claim 1 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 1000 microequivalents/g.

6. The wet wipe as set forth in claim 1 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 100 microequivalents/g.

7. The wet wipe as set forth in claim 1 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 10 microequivalents/g.

8. The wet wipe as set forth in claim 1 wherein the diameter of the anionic particles is from about 1 micrometer to about 8 micrometers.

9. The wet wipe as set forth in claim 1 wherein the diameter of the anionic particles is from about 2 micrometers to about 6 micrometers.

10. The wet wipe as set forth in claim 1 wherein the diameter of the anionic particles is from about 3 micrometers to about 4 micrometers.

11. A wet wipe comprising a fibrous sheet material and a cleansing solution capable of dislodging contaminants from skin, the cleansing solution comprising from about 0.001 mg/(mL of cleaning solution) to about 10 mg/(mL of cleansing solution) of anionic particles having a diameter of from about 0.1 micrometers to about 10 micrometers, the anionic particles having an effective charge density of from about 0.1 microequivalents/g to about 500 milliequivalents/g, wherein the anionic particles are carboxymethylcellulose microfibers.

12. The wet wipe as set forth in claim 11 wherein the carboxymethylcellulose microfibers have a diameter of from about 2 micrometers to about 6 micrometers.

13. The wet wipe as set forth in claim 11 wherein the carboxymethylcellulose microfibers have a diameter of from about 3 micrometers to about 4 micrometers.

14. The wet wipe as set forth in claim 11 wherein the solution comprises from about 0.25 mg/(mL of the cleansing solution) to about 1 mg/(mL of the cleansing solution) of the carboxymethylcellulose microfibers.

15. The wet wipe as set forth in claim 11 wherein the carboxymethylcellulose fibers have an effective charge density of about 3 microequivalents/g.

16. A wet wipe comprising a fibrous sheet material and a cleansing solution capable of dislodging contaminants from skin, the cleansing solution having a pH of from about 5 to about 6 and comprising from about 0.001 mg/(mL of cleansing solution) to about 10 mg/(mL of cleansing solution) of anionic particles having a diameter of from about 0.1 micrometers to about 10 micrometers, the anionic particles having an effective charge density of from about 0.1 microequivalents/g to about 500 milliequivalents/g, wherein the anionic particles are selected from the group consisting of cellulose carbonate, carboxymethyl chitin, carboxymethyl chitosan, carboxymethyl curdlan, carboxymethyl alpha-cyclodextrin, carboxymethyl beta-cyclodextrin, carboxymethyl dextran, and carboxymethylcellulose.

17. The wet wipe as set forth in claim 16 wherein the cleansing solution comprises from about 0.01 mg/(mL of cleansing solution) to about 5 mg/(mL of cleansing solution) of the anionic particles.

18. The wet wipe as set forth in claim 16 wherein the cleansing solution comprises from about 0.01 mg/(mL of cleansing solution) to about 0.25 mg/(mL of cleansing solution) of the anionic particles.

19. The wet wipe as set forth in claim 16 wherein the cleansing solution comprises from about 0.01 mg/(mL of cleansing solution) to about 0.1 mg/(mL of cleansing solution) of the anionic particles.

20. The wet wipe as set forth in claim 16 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 1000 microequivalents/g.

21. The wet wipe as set forth in claim 16 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 100 microequivalents/g.

22. The wet wipe as set forth in claim 16 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 10 microequivalents/g.

23. The wet wipe as set forth in claim 16 wherein the diameter of the anionic particles is from about 1 micrometer to about 8 micrometers.

24. The wet wipe as set forth in claim 16 wherein the diameter of the anionic particles is from about 2 micrometers to about 6 micrometers.

25. The wet wipe as set forth in claim 16 wherein the diameter of the anionic particles is from about 3 micrometers to about 4 micrometers.

26. The wet wipe as set forth in claim 16 wherein the anionic particles are carboxymethylcellulose microfibers.

27. The wet wipe as set forth in claim 26 wherein the carboxymethylcellulose microfibers have a diameter of from about 2 micrometers to about 6 micrometers.

28. The wet wipe as set forth in claim 27 wherein the carboxymethylcellulose microfibers have a diameter of from about 3 micrometers to about 4 micrometers.

29. The wet wipe as set forth in claim 28 wherein the solution comprises from about 0.25 mg/(mL of the cleansing solution) to about 1 mg/(mL of the cleansing solution) of the carboxymethylcellulose microfibers.

30. The wet wipe as set forth in claim 29 wherein the carboxymethylcellulose fibers have an effective charge density of about 3 microequivalents/g.

31. A cleansing solution suitable for direct application to skin capable of dislodging contaminants from skin, the solution comprising from about 0.001 mg/(mL of cleansing solution) to about 10 mg/(mL of cleansing solution) of anionic particles having a diameter of from about 0.1 micrometers to about 10 micrometers, the anionic particles having an effective charge density of from about 0.1 microequivalents/g to about 500 milliequivalents/g, wherein the anionic particles are selected from the group consisting of cellulose carbonate, carboxymethyl chitin, carboxymethyl chitosan, carboxymethyl curdlan, carboxymethyl alpha-cyclodextrin, carboxymethyl beta-cyclodextrin, carboxymethyl dextran, and carboxymethylcellulose.

32. The cleansing solution as set forth in claim 31 wherein the cleansing solution comprises from about 0.01 mg/(mL of cleansing solution) to about 5 mg/(mL of cleansing solution) of the anionic particles.

33. The cleansing solution as set forth in claim 31 wherein the cleansing solution comprises from about 0.01 mg/(mL of cleansing solution) to about 0.25 mg/(mL of cleansing solution) of the anionic particles.

34. The cleansing solution as set forth in claim 31 wherein the cleansing solution comprises from about 0.01 mg/(mL of cleansing solution) to about 0.1 mg/(mL of cleansing solution) of the anionic particles.

35. The cleansing solution as set forth in claim 31 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 1000 microequivalents/g.

36. The cleansing solution as set forth in claim 31 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 100 microequivalents/g.

37. The cleansing solution as set forth in claim 31 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 10 microequivalents/g.

38. The cleansing solution as set forth in claim 31 wherein the diameter of the anionic particles is from about 1 micrometer to about 8 micrometers.

39. The cleansing solution as set forth in claim 31 wherein the diameter of the anionic particles is from about 2 micrometers to about 6 micrometers.

40. The cleansing solution as set forth in claim 31 wherein the diameter of the anionic particles is from about 3 micrometers to about 4 micrometers.

41. The cleansing solution as set forth in claim 31 wherein the anionic particles are carboxymethylcellulose microfibers.

42. The cleansing solution as set forth in claim 41 wherein the carboxymethylcellulose microfibers have a diameter of from about 2 micrometers to about 6 micrometers.

43. The cleansing solution as set forth in claim 42 wherein the carboxymethylcellulose microfibers have a diameter of from about 3 micrometers to about 4 micrometers.

44. The cleansing solution as set forth in claim 42 wherein the solution comprises from about 0.25 mg/(mL of the cleansing solution) to about 1 mg/(mL of the cleansing solution) of the carboxymethylcellulose microfibers.

45. The cleansing solution set forth in claim 44 wherein the carboxymethylcellulose fibers have an effective charge density of about 3 microequivalents/g.

46. A cleansing solution suitable for direct application to skin capable of dislodging contaminants from skin, the solution having a pH of from about 5 to about 6 and comprising from about 0.001 mg/(mL of cleansing solution) to about 10 mg/(mL of cleansing solution) of anionic particles having a diameter of from about 0.1 micrometers to about 10 micrometers, the anionic particles having an effective charge density of from about 0.1 microequivalents/g to about 500 milliequivalents/g, wherein the anionic particles are selected from the group consisting of cellulose carbonate, carboxymethyl chitin, carboxymethyl chitosan, carboxymethyl curdlan, carboxymethyl alpha-cyclodextrin, carboxymethyl beta-cyclodextrin, carboxymethyl dextran, and carboxymethylcellulose.

47. The cleansing solution as set forth in claim 46 wherein the cleansing solution comprises from about 0.01 mg/(mL of cleansing solution) to about 5 mg/(mL of cleansing solution) of the anionic particles.

48. The cleansing solution as set forth in claim 46 wherein the cleansing solution comprises from about 0.01 mg/(mL of cleansing solution) to about 0.25 mg/(mL of cleansing solution) of the anionic particles.

49. The cleansing solution as set forth in claim 46 wherein the cleansing solution comprises from about 0.01 mg/(mL of cleansing solution) to about 0.1 mg/(mL of cleansing solution) of the anionic particles.

50. The cleansing solution as set forth in claim 46 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 1000 microequivalents/g.

51. The cleansing solution as set forth in claim 46 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 100 microequivalents/g.

52. The cleansing solution as set forth in claim 46 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 10 microequivalents/g.

53. The cleansing solution as set forth in claim 46 wherein the diameter of the anionic particles is from about 1 micrometer to about 8 micrometers.

54. The cleansing solution as set forth in claim 46 wherein the diameter of the anionic particles is from about 2 micrometers to about 6 micrometers.

55. The cleansing solution as set forth in claim 46 wherein the diameter of the anionic particles is from about 3 micrometers to about 4 micrometers.

56. The cleansing solution as set forth in claim 46 wherein the anionic particles are carboxymethylcellulose microfibers.

57. The cleansing solution as set forth in claim 56 wherein the carboxymethylcellulose microfibers have a diameter of from about 2 micrometers to about 6 micrometers.

58. The cleansing solution as set forth in claim 57 wherein the carboxymethylcellulose microfibers have a diameter of from about 3 micrometers to about 4 micrometers.

59. The cleansing solution as set forth in claim 57 wherein the solution comprises from about 0.25 mg/(mL of the cleansing solution) to about 1 mg/(mL of the cleansing solution) of the carboxymethylcellulose microfibers.

60. The cleansing solution as set forth in claim 59 wherein the carboxymethylcellulose microfibers have an effective charge density of about 3 microequivalents/g.

61. A product comprising a substrate comprising anionic particles capable of dislodging contaminants from skin, the substrate comprising from about 0.001 mg/(g of substrate) to about 10 mg/(g of substrate) of anionic particles having a diameter of from about 0.1 micrometers to about 10 micrometers, the anionic particles having an effective charge density of from about 0.1 microequivalents/g to about 500 milliequivalents/g, wherein the anionic particles are selected from the group consisting of cellulose carbonate, carboxymethyl chitin, carboxymethyl chitosan, carboxymethyl curdlan, carboxymethyl alpha-cyclodextrin, carboxymethyl beta-cyclodextrin carboxymethyl dextran, and carboxymethylcellulose.

62. The product as set forth in claim 61 wherein the substrate comprises from about 0.01 mg/(g of substrate) to about 5 mg/(g of substrate) of the anionic particles.

63. The product as set forth in claim 61 wherein the substrate comprises from about 0.01 mg/(g of substrate) to about 0.25 mg/(g of substrate) of the anionic particles.

64. The product as set forth in claim 61 wherein the substrate comprises from about 0.01 mg/(g of substrate) to about 0.1 mg/(g of substrate) of the anionic particles.

65. The product as set forth in claim 61 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 1000 microequivalents/g.

66. The product as set forth in claim 61 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 3.00 microequivalents/g.

67. The product as set forth in claim 61 wherein the effective charge density of the anionic particles is from about 0.1 microequivalents/g to about 10 microequivalents/g.

68. The product as set forth in claim 61 wherein the diameter of the anionic particles is from about 1 micrometer to about 8 micrometers.

69. The product as set forth in claim 61 wherein the diameter of the anionic particles is from about 2 micrometers to about 6 micrometers.

70. The product as set forth in claim 61 wherein the diameter of the anionic particles is from about 3 micrometers to about 4 micrometers.

71. The product as set forth in claim 61 wherein the anionic particles are carboxymethylcellulose microfibers.

72. The product as set forth in claim 61 wherein the carboxymethylcellulose microfibers have a diameter of from about 2 micrometers to about 6 micrometers.

73. The product as set forth in claim 72 wherein the carboxymethylcellulose microfibers have a diameter of from about 3 micrometers to about 4 micrometers.

74. The product as set forth in claim 73 wherein the solution comprises from about 0.25 mg/(mL of the cleansing solution) to about 1 mg/(mL of the cleansing solution) of the carboxymethylcellulose microfibers.

75. The product as set forth in claim 61 wherein the substrate is selected from the group consisting of woven webs, non-woven webs, spunbonded fabrics, meltblown fabrics, wet-laid fabrics, needle punched webs, cellulosic material, or a combination thereof.

76. The product as set forth in claim 61 wherein the substrate is selected from the group consisting of facial tissue, bathroom tissue, diapers, training pants, incontinence garments, nursing pads, tampons, sanitary napkins, hand towels, surgical drapes, wound dressings, gowns, bedsheets, hand mitts, dry acne wipes, oil blotting paper and pillowcases.