LONG-TERM PRESERVATION AND NOVEL APPLICATION OF CHLOROUS ACID AQUEOUS SOLUTION FORMULATION

• US 20160113285A1
• Filed: 05/15/2014
• Published: 04/28/2016
• Est. Priority Date: 05/20/2013
• Status: Abandoned Application

• Current Assignee: Honbu Sankei Co., Ltd
• Original Assignee: Honbu Sankei Co., Ltd
• Inventors: GODA, Hisataka
• Application Number:
  US14/892,343
• Publication Number:
  US 20160113285A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: A01N 25/22 containing ingredients stabilising the active ingredients
• CPC Class Codes: A01N 25/32 Ingredients for reducing the noxious effect of the active substances to organisms other than pests, e.g. toxicity reducing compositions, self-destructing compositions
• 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 59/00 Biocides, pest repellants or attractants, or plant growth regulators containing elements or inorganic compounds
• CPC Class Codes: A01N 59/26 Phosphorus; Compounds thereof
• CPC Class Codes: A61L 2/18 Liquid substances or solutions comprising solids or dissolved gases
• CPC Class Codes: A61P 17/00 Drugs for dermatological disorders
• CPC Class Codes: A61P 31/04 Antibacterial agents
• CPC Class Codes: C01B 11/08 Chlorous acid
• CPC Class Codes: D06M 11/30 with oxides of halogens, oxyacids of halogens or their salts, e.g. with perchlorates
• CPC Class Codes: D06M 16/00 Biochemical treatment of fibres, threads, yarns, fabrics, or fibrous goods made from such materials, e.g. enzymatic
• CPC Class Codes: D06M 2101/06 cellulosic

Abstract

The present invention provides a technique enabling long-term preservation of a chlorous acid aqueous solution and novel application thereof. A sterilizing agent comprising an aqueous solution comprising chlorous acid (chlorous acid aqueous solution), which is used as a sterilizing agent, comprises a chlorous acid aqueous solution, metal hydroxide, and metal phosphate. Preferably, an agent in which potassium is the metal and/or pH is 3.5 or higher and less than 7.0 is prepared, whereby an unexpected long-term stabilizing effect was demonstrated. Further, the present invention provides: a sterilizing agent for preventing secondary contamination, comprising a chlorous acid aqueous solution, or an article impregnated with a chlorous acid aqueous solution for preventing secondary contamination; an article impregnated with a chlorous acid aqueous solution for sterilizing a floor surface; an agent for removing odor comprising a chlorous acid aqueous solution or an article impregnated with a chlorous acid aqueous solution for removing odor; and an agent for removing microbes adhering to the body, comprising a chlorous acid aqueous solution or an article impregnated with a chlorous acid aqueous solution for removing body adhering microbes.

Claims

1-34. -34. (canceled)

35. A method of preserving a chlorous acid aqueous solution for a long period of time, comprising maintaining the chlorous acid aqueous solution at 10°

C. or lower.

36. The method of claim 35, comprising maintaining the chlorous acid aqueous solution at 4°

C. or lower.

37. A sterilizing agent comprising a chlorous acid aqueous solution, metal hydroxide, and metal phosphate wherein the metal comprises potassium.

38. The sterilizing agent of claim 37, wherein pH is 3.2 or higher and lower than 7.0.

39. The sterilizing agent of claim 37, wherein pH is 5.0 to 7.0.

40. The sterilizing agent of claim 37, wherein pH is about 5.5.

41. The sterilizing agent of claim 37, wherein the chlorous acid aqueous solution is 0.25%-75%, potassium dihydrogen phosphate is 0.70% to 13.90%, and potassium hydroxide is 0.10% to 5.60%.

42. The sterilizing agent of claim 37, wherein potassium hydroxide are 0.1 N to 1.0 N and buffer pH of potassium phosphate is 3.2 or higher and lower than 7.0.

43. An article impregnated with the sterilizing agent of claim 37.

44. The article of claim 43, wherein the article is selected from a sheet, film, patch, brush, nonwoven fabric, paper, fabric, absorbent cotton, and sponge.

45. The article of claim 43, wherein the article is an article in a form of a sheet with one layer or two or more layers, wherein a chlorous acid aqueous solution is impregnated at a concentration of 3000 ppm or higher in the sterilizing agent.

46. The article of claim 45, wherein the article in a form of a sheet is made of cotton.

47. The article of claim 43, wherein the article is an article in a form of a sheet with three or more layers.

48. A method for preventing secondary contamination, comprising contacting a target with a sterilizing agent comprising a chlorous acid aqueous solution, metal hydroxide, and metal phosphate, wherein the metal comprises potassium.

49. A method for preventing secondary contamination, comprising contacting a target with an article impregnated with an aqueous solution comprising a chlorous acid aqueous solution, metal hydroxide, and metal phosphate, wherein the metal comprises potassium.

50. The method of claim 49, wherein the article is selected from a sheet, film, patch, brush, nonwoven fabric, paper, fabric, absorbent cotton, and sponge.

51. The method of claim 49, wherein the article is a sheet with one layer or two or more layers, and chlorous acid is impregnated at a concentration of 3000 ppm or higher.

52. The method of claim 51, wherein the sheet is made of cotton.

53. The method of claim 49, wherein the article is a sheet with three or more layers.

54. A method for sterilizing a floor surface, comprising contacting the floor surface with an article impregnated with an aqueous solution comprising a chlorous acid aqueous solution, metal hydroxide and metal phosphate, wherein the metal comprises potassium.

55. The method of claim 54, wherein the article is selected from a sheet, film, patch, brush, nonwoven fabric, paper, fabric, absorbent cotton, and sponge.

56. The method of claim 54, wherein chlorous acid is impregnated at a concentration of 1000 ppm or higher.

57. The method of claim 55, wherein the sheet is made of cotton.

58. A method for removing odor comprising contacting odor causing substance with an agent comprising an aqueous solution comprising a chlorous acid aqueous solution, metal hydroxide, and metal phosphate, wherein the metal comprises potassium.

59. A method for removing odor comprising contacting odor causing substance with an article impregnated with an aqueous solution comprising a chlorous acid aqueous solution, metal hydroxide, and metal phosphate, wherein the metal comprises potassium.

60. The method of claim 59, wherein the article is selected from a sheet, film, patch, brush, nonwoven fabric, paper, fabric, absorbent cotton, and sponge.

61. The method of claim 59, wherein the article is a sheet and chlorous acid is impregnated at a concentration of 500 ppm or higher.

62. The method of claim 61, wherein the sheet is made of cotton.

63. A method for removing microbes adhering to a body, comprising contacting the body with an agent comprising an aqueous solution comprising a chlorous acid aqueous solution, metal hydroxide, and metal phosphate, wherein the metal comprises potassium.

64. A method for removing microbes adhering to a body, comprising contacting the body with an article impregnated with an aqueous solution comprising a chlorous acid aqueous solution, metal hydroxide, and metal phosphate, wherein the metal comprises potassium.

65. The method of claim 64, wherein the article is selected from a sheet, film, patch, brush, nonwoven fabric, paper, fabric, absorbent cotton, and sponge.

66. The method of claim 64, wherein the article is a sheet and chlorous acid is impregnated at a concentration of 3000 ppm or higher.

67. The method of claim 66, wherein the sheet is made of cotton.