Search

EP-3885421-B1 - HYDROPHILIZATION TREATMENT AGENT COMPOSITION

EP3885421B1EP 3885421 B1EP3885421 B1EP 3885421B1EP-3885421-B1

Inventors

  • SAITO, TAKANORI
  • KAWAGUCHI, HIROKO
  • NOMURA, TAKAYUKI
  • SHIMIZU, HARUNA
  • ITO, KANA

Dates

Publication Date
20260506
Application Date
20191120

Claims (14)

  1. A hydrophilization treatment agent composition comprising (A) a branched-type anionic surfactant, (B) a polyvalent metal ion, and water, wherein a molar ratio between (A) and (B), (B)/(A), is 0.01 or more and 10 or less.
  2. The hydrophilization treatment agent composition according to claim 1, wherein (A) is contained in an amount of 0.001 mass% or more and 60 mass% or less.
  3. The hydrophilization treatment agent composition according to claim 1 or 2, wherein (A) is one or more branched-type anionic surfactants selected from an internal olefin sulfonate salt, an alkylbenzene sulfonate salt, a secondary alkane sulfonate salt and a dialkyl sulfosuccinate salt.
  4. The hydrophilization treatment agent composition according to claim 1, wherein the branched-type anionic surfactant (A) is (A1) an internal olefin sulfonate salt.
  5. The hydrophilization treatment agent composition according to claim 4, wherein (A1) is contained in an amount of 0.03 mass% or more.
  6. The hydrophilization treatment agent composition according to any one of claims 1 to 5, wherein the composition is for use on hard surfaces.
  7. The hydrophilization treatment agent composition according to any one of claims 1 to 6, wherein (B) is a divalent metal ion.
  8. A method for hydrophilizing a solid surface, wherein a treatment liquid comprising (A) a branched-type anionic surfactant, (B) a polyvalent metal ion, and water, in which a molar ratio between (A) and (B), (B)/(A), is 0.01 or more and 10 or less, is brought into contact with the solid surface.
  9. The method for hydrophilizing a solid surface according to claim 8, wherein the solid surface is a solid surface of a hard article.
  10. The method for hydrophilizing a solid surface according to claim 8 or 9, wherein the solid surface is rinsed with water after the treatment liquid is brought into contact with the solid surface.
  11. The method for hydrophilizing a solid surface according to any one of claims 8 to 10, wherein the treatment liquid is obtained by mixing the hydrophilization treatment agent composition according to any one of claims 1 to 3 with water.
  12. The method for hydrophilizing a solid surface according to any one of claims 8 to 10, wherein the treatment liquid is obtained by mixing a composition comprising the component (A) and water with a composition comprising the component (B) and water.
  13. Use of the composition according to claim 4 or 5 as a hydrophilization detergent composition, wherein the composition is used by mixing with water comprising a hardness component.
  14. A method for hydrophilizing and washing a solid surface comprising the following step 1: <step 1> a step of bringing a hydrophilization detergent liquid (I) comprising (A) a branched-type anionic surfactant, (B) a polyvalent metal ion, and water, wherein the branched-type anionic surfactant (A) is (A1) an internal olefin sulfonate salt, a molar ratio between (A1) and (B), (B)/(A1), is 0.01 or more and 10 or less, and (A1) is contained in an amount of 0.03 mass% or more into contact with the solid surface.

Description

Field of the Invention The present invention relates to a hydrophilization treatment agent composition and a method for hydrophilizing a solid surface. Background of the Invention Conventionally, as methods for imparting antisoiling properties or decontaminating properties to solid surfaces, relatively distinct methods have been known: water repellent treatment and hydrophilization treatment. Water repellent treatment is a technique of performing surface treatment for making a solid surface such as glass, metal, fiber or the like water repellant to prevent dirt contained in water from adhering thereto. For example, it is widely practiced to treat clothes with a fabric softener after washing, to spray water repellent on ski wear or the like to render it waterproof, or to wax the painted surface of automobiles. However, it is difficult to make the surfaces completely water repellent by the water repellent treatments and the repeated contact of the solid surfaces with water causes dirt contained in the water to accumulate thereon, so that an antisoiling effect is difficult to fully develop, and reduction in a decontaminating effect, which results in the adhered dirt becoming harder to remove, may also occur. On the other hand, if the solid surfaces are subjected to hydrophilization treatment, that is, the treatment of decreasing the contact angle of the solid surfaces relative to water to make the solid surfaces easy to get wet with water, dirt adhering to the solid surfaces after the said treatment becomes easier to remove when washed, or a recontamination prevention effect against dirt can be expected, and in addition, the followings can be expected: an anti-fogging effect on glass, mirrors or the like; an antistatic effect; frost prevention on aluminum fins of heat exchangers; and imparting antisoiling properties, decontaminating properties or the like to the surface of a bathtub, a toilet or the like. As treatment agents and methods for hydrophilizing solid surfaces, several proposals have been made. For example, JP-A 2001-181601 discloses an aqueous antisoiling composition containing an amphoteric polyelectrolyte. JP-A 2006-514150 discloses a cleaning or rinsing composition containing a surfactant and a specific polybetaine. JP-A 2012-25820 discloses a hydrophilization treatment agent composition containing an acrylic resin obtained by copolymerizing a polymerizable unsaturated monomer having a specific betaine structure and a specific polymerizable unsaturated monomer, hydrophilic crosslinked polymer particles and a crosslinking agent. JP-A 2009-545642 discloses a method for improving the wettability/hydrophilicity of a hydrophobic substrate including the step of applying a composition including an amphiphilic block copolymer to the substrate, wherein the amphiphilic block copolymer contains a hydrophilic block with a specific structure and a hydrophobic block formed of an ethylenic unsaturated hydrophobic monomer. JP-A 2015-105313 discloses a hydrophilization treatment agent composed of a block polymer A having a polymer segment A-1 derived from an unsaturated monomer including a repeating unit derived from a hydrophobic unsaturated monomer and a polymer segment A-2 derived from an unsaturated monomer including a repeating unit derived from an unsaturated monomer having a sulfobetaine group, wherein the content of the polymer segment A-1 is 0.05 mass% or more and 75 mass% or less. JP-A 2017-190381 discloses a surface treatment agent composed of a copolymer including a specific constituting unit (A) having a betaine group and a specific constituting unit (B) having a cationic group. In addition, WO-A 2019/102823 discloses a hydrophilization treatment agent composed of a copolymer including a polymer segment A-1 having a betaine group and a polymer segment A-2 having an aromatic group. Moreover, it states that surfactants are used to improve the hydrophilization performance of solid surfaces when oily stain substances adhere thereto. JP-A 2001-504227 relates to a membrane composed of polymers suitable for use in immunodiagnostic assays and blotting assays, and methods of preparing and using the same. This literature discloses a monodentate sulfonate surfactant and/or an α-olefin sulfonate surfactant as preferable hydrophilic compounds, and Bioterge AS-40 prepared by Stepan Co. as the most preferable surfactant. WO-A 2002-102907 discloses a coating composition including a sulfonic acid salt. It states that the sulfonic acid salt is selectively used since it is excellent in permeability into the resultant coating film and in wetting property. WO-A 2019/013322 discloses a method for washing a hard article, the method including a contact step of bringing a detergent liquid obtained by mixing (a) a potassium internal olefin sulfonate and (b) water having a hardness of 5°dH or more into contact with the hard article, and a step of rinsing the hard article after the contact step with water having a hardness of 5