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EP-4736643-A1 - BIOFILM GERMICIDE COMPOSITION

EP4736643A1EP 4736643 A1EP4736643 A1EP 4736643A1EP-4736643-A1

Abstract

Provided are a biofilm bactericidal agent composition and a biofilm bactericidal method using the same excellent in bactericidal performance for bacteria existing in a biofilm adhering to an object article, especially a textile product. A biofilm bactericidal agent composition containing the following components (a) and (b), component (a): one or more compounds selected from (a1) a quaternary ammonium salt having a long-chain alkyl group represented by the general formula (a1), and (a2) a bispyridinium compound, and component (b): an anionic surfactant including one or more compounds selected from (b1) a specific anionic surfactant represented by the general formula (b1), and (b2) an internal olefin sulfonate with 14 or more and 20 or less carbons.

Inventors

  • SAEKI, Shiho
  • KIJITORI, HIROKI

Assignees

  • Kao Corporation

Dates

Publication Date
20260506
Application Date
20240326

Claims (15)

  1. A biofilm bactericidal agent composition comprising the following components (a) and (b), component (a): one or more compounds selected from (a1) a compound represented by the following general formula (a1) (hereinafter referred to as component (a1)) and (a2) a bispyridinium compound (hereinafter referred to as component (a2)), wherein in the general formula (a1), R 1a and R 2a are each independently a linear or branched alkyl group with 8 carbons, R 3a and R 4a are each independently a linear or branched alkyl group with 1 or more and 3 or less carbons, and X - is an anion, and component (b): an anionic surfactant including one or more compounds selected from (b1) a compound represented by the following general formula (b1) (hereinafter referred to as component (b1)) and (b2) an internal olefin sulfonate with 14 or more and 20 or less carbons (hereinafter referred to as component (b2)), R 1b -O-[(PO) p /(EO) q ]-SO 3 M (b1) wherein in the general formula (b1), R 1b is a hydrocarbon group with 8 or more and 22 or less carbons, PO is a propyleneoxy group, EO is an ethyleneoxy group, "/" is a symbol indicating that the order in which PO and EO are bonded is unrestricted, p is an average number of added moles of PO and is a number of 0 or more and 10 or less, q is an average number of added moles of EO and is a number of 0 or more and 25 or less, and M is a hydrogen ion, an alkali metal ion, an alkaline earth metal ion (1/2 atom), an ammonium ion, or an organic ammonium ion.
  2. The biofilm bactericidal agent composition according to claim 1, wherein the component (b) is an anionic surfactant including one or more compounds selected from the component (b1) of the general formula (b1), in which p is 0.1 or more and 10 or less and q is 0 or more and 25 or less, and the internal olefin sulfonate of the component (b2), which has 16 or more and 18 or less carbons.
  3. The biofilm bactericidal agent composition according to claim 1 or 2, wherein a content of the components (b1) and (b2) in the component (b) is 70 mass% or more and 100 mass% or less.
  4. The biofilm bactericidal agent composition according to any one of claims 1 to 3, wherein the component (a2) is octenidine dihydrochloride.
  5. The biofilm bactericidal agent composition according to any one of claims 1 to 4, wherein a mass ratio of a content of the component (a) to a content of the component (b), (a)/(b), is 0.005 or more and 30 or less.
  6. The biofilm bactericidal agent composition according to any one of claims 1 to 5, wherein the composition further comprises water, and a content of the component (a) is 0.001 mass% or more and 15 mass% or less and a content of the component (b) is 0.001 mass% or more and 80 mass% or less.
  7. The biofilm bactericidal agent composition according to any one of claims 1 to 6, wherein the composition is used for textile products.
  8. A biofilm bactericidal method comprising bringing the biofilm bactericidal agent composition according to any one of claims 1 to 7 or a treatment liquid which is an aqueous dilute solution of the composition into contact with an object article where a biofilm exists.
  9. The biofilm bactericidal method according to claim 8, wherein the biofilm bactericidal agent composition or the treatment liquid is left for 10 seconds or more and 1 hour or less after bringing it into contact with the object article where a biofilm exists.
  10. The biofilm bactericidal method according to claim 8 or 9, wherein the biofilm bactericidal agent composition or the treatment liquid brought into contact with the object article is made to flow.
  11. The biofilm bactericidal method according to any one of claims 8 to 10, wherein the object article is a textile product.
  12. A biofilm bactericidal method comprising bringing a treatment liquid into contact with an object article where a biofilm exists, the treatment liquid comprising the following components (a) and (b) and water, component (a): one or more compounds selected from (a1) a compound represented by the following general formula (a1) (hereinafter referred to as component (a1)) and (a2) a bispyridinium compound (hereinafter referred to as component (a2)), wherein in the general formula (a1), R 1a and R 2a are each independently a linear or branched alkyl group with 8 carbons, R 3a and R 4a are each independently a linear or branched alkyl group with 1 or more and 3 or less carbons, and X - is an anion, and component (b): an anionic surfactant including one or more compounds selected from (b1) a compound represented by the following general formula (b1) (hereinafter referred to as component (b1)) and (b2) an internal olefin sulfonate with 14 or more and 20 or less carbons (hereinafter referred to as component (b2)), R 1b -O-[(PO) p /(EO) q ]-SO 3 M (b1) wherein in the general formula (b1), R 1b is a hydrocarbon group with 8 or more and 22 or less carbons, PO is a propyleneoxy group, EO is an ethyleneoxy group, "/" is a symbol indicating that the order in which PO and EO are bonded is unrestricted, p is an average number of added moles of PO and is a number of 0 or more and 10 or less, q is an average number of added moles of EO and is a number of 0 or more and 25 or less, and M is a hydrogen ion, an alkali metal ion, an alkaline earth metal ion (1/2 atom), an ammonium ion, or an organic ammonium ion.
  13. The biofilm bactericidal method according to claim 12, wherein a mass ratio of a content of the component (a) to a content of the component (b) in the treatment liquid, (a)/(b), is 0.005 or more and 30 or less.
  14. The biofilm bactericidal method according to claim 12 or 13, wherein the treatment liquid is left for 10 seconds or more and 1 hour or less after bringing it into contact with the object article where a biofilm exists.
  15. Use of a composition comprising the following components (a) and (b) for killing bacteria in a biofilm adhering to a textile product or a hard article, component (a): one or more compounds selected from (a1) a compound represented by the following general formula (a1) (hereinafter referred to as component (a1)) and (a2) a bispyridinium compound (hereinafter referred to as component (a2)), wherein in the general formula (a1), R 1a and R 2a are each independently a linear or branched alkyl group with 8 carbons, R 3a and R 4a are each independently a linear or branched alkyl group with 1 or more and 3 or less carbons, and X - is an anion, and component (b): an anionic surfactant including one or more compounds selected from (b1) a compound represented by the following general formula (b1) (hereinafter referred to as component (b1)) and (b2) an internal olefin sulfonate with 14 or more and 20 or less carbons (hereinafter referred to as component (b2)), R 1b -O-[(PO) p /(EO) q ]-SO 3 M (b1) wherein in the general formula (b1), R 1b is a hydrocarbon group with 8 or more and 22 or less carbons, PO is a propyleneoxy group, EO is an ethyleneoxy group, "/" is a symbol indicating that the order in which PO and EO are bonded is unrestricted, p is an average number of added moles of PO and is a number of 0 or more and 10 or less, q is an average number of added moles of EO and is a number of 0 or more and 25 or less, and M is a hydrogen ion, an alkali metal ion, an alkaline earth metal ion (1/2 atom), an ammonium ion, or an organic ammonium ion.

Description

Field of the Invention The present invention relates to a biofilm bactericidal agent composition and a biofilm bactericidal method. Background of the Invention Once bacteria adhere to object articles, the bacteria adhering to the object articles grow and form biofilms. Biofilms are also called biological films or slime, and generally refer to three-dimensional structures formed from macromolecular compounds such as polysaccharides, proteins, and nucleic acids, or the like produced by microorganisms such as bacteria or the like to envelop microorganisms when microorganisms adhere to and grow on the surface of matter. Biofilms also pose problems for individual ordinary people in various situations. For example, in wet environments in households such as the kitchen, sink, areas near bathroom drains, and others, they cause unpleasant slimy stains, foul odors, or the like. Further, not only in these direct water environment areas, but also in situations where water, dampness, and dirt coexist, such as scratches on cutting boards, the inside of dishwashing sponges, washing tubs, and further, fabric products such as clothing, dishcloths, rags, bath mats, or the like, and others, biofilms are more likely to be formed and cause problems. Further, detergents formulated with various types of surfactants are widely used for washing textile products such as clothing or the like. In recent years, as people have become more aware of hygiene, concern about bacteria or viruses adhering to the surfaces of textile products has also been increasing. Therefore, people are undertaking extra efforts or costs to do their washing, such as soaking socks or sweat-stained clothing prone to bacterial growth in detergent liquids for some time, using disinfectants or bleaching agents together with detergents for textile products, or the like. US-B 5728667 discloses a germicidal light-duty dishwashing detergent composition in either a gel or liquid form, which contains a dioctyl dimethylammonium salt and an alkyl ether carboxylate. Summary of the Invention Biofilms adhering to object articles, especially textile products are very difficult to remove because macromolecules constituting biofilms act as a protection barrier that guards bacteria from various types of base agents, and bacteria existing in biofilms are also very difficult to kill. The present invention provides a biofilm bactericidal agent composition and a biofilm bactericidal method using the same excellent in bactericidal performance for bacteria existing in a biofilm adhering to an object article, especially a textile product. In the present invention, the biofilm bactericidal agent composition refers to a composition having an effect on bactericidal performance for bacteria existing in a biofilm. Further, in the present invention, the biofilm bactericidal method refers to a method for killing bacteria existing in a biofilm. Further, in the present invention, biofilm bacteria killing refers to killing bacteria existing in a biofilm. Further, in the present invention, the viewpoint of biofilm bacteria killing refers to the viewpoint of more enhancing the effect of killing bacteria existing in a biofilm. The present invention relates to a biofilm bactericidal agent composition containing the following components (a) and (b), component (a): one or more compounds selected from (a1) a compound represented by the following general formula (a1) (hereinafter referred to as component (a1)) and (a2) a bispyridinium compound (hereinafter referred to as component (a2)), wherein in the general formula (a1), R1a and R2a are each independently a linear or branched alkyl group with 8 carbons, R3a and R4a are each independently a linear or branched alkyl group with 1 or more and 3 or less carbons, and X- is an anion, andcomponent (b): an anionic surfactant including one or more compounds selected from (b1) a compound represented by the following general formula (b1) (hereinafter referred to as component (b1)) and (b2) an internal olefin sulfonate with 14 or more and 20 or less carbons (hereinafter referred to as component (b2)),         R1b-O-[(PO) p/(EO)q]-SO3M     (b1) wherein in the general formula (b1), R1b is a hydrocarbon group with 8 or more and 22 or less carbons, PO is a propyleneoxy group, EO is an ethyleneoxy group, "/" is a symbol indicating that the order in which PO and EO are bonded is unrestricted, p is an average number of added moles of PO and is a number of 0 or more and 10 or less, q is an average number of added moles of EO and is a number of 0 or more and 25 or less, and M is a hydrogen ion, an alkali metal ion, an alkaline earth metal ion (1/2 atom), an ammonium ion, or an organic ammonium ion. Further, the present invention relates to a biofilm bactericidal method including bringing the biofilm bactericidal agent composition of the present invention or a treatment liquid which is an aqueous dilute solution of the composition into contact with an object article wh