Two-component treatment agent, treatment method for making metal surface antibacterial and antibacterial treatment agent

Patent metadata

Field	Value
Publication number	US-12570860-B2
Application number	US-202217677309-A
Country	US
Kind code	B2
Filing date	Feb 22, 2022
Priority date	Feb 22, 2021
Publication date	Mar 10, 2026
Grant date	Mar 10, 2026

Abstract

To provide a two-component treatment agent that is capable of easily making a metal surface composed of a variety of metals antibacterial by application thereof and can be used in an antibacterial treatment of a metal surface, a treatment method for making a metal surface antibacterial using the two-component treatment agent, and an antibacterial treatment agent that can be incorporated in the two-component treatment agent. An antibacterial treatment is carried out on a metal surface using a two-component treatment agent composed of a primer solution containing a metallic bonding compound (A) having a functional group capable of bonding to the metal surface and an antibacterial solution containing an antibacterial layer-forming compound (B), wherein the metallic bonding compound (A) and the antibacterial layer-forming compound (B) are capable of forming a covalent bond.

First claim

What is claimed is:

1 . A two-component treatment agent used for an antibacterial treatment of a metal surface, the two-component treatment agent comprising:
a primer solution containing a metallic bonding compound (A) having a functional group capable of bonding to the metal surface; and an antibacterial solution containing an antibacterial layer-forming compound (B), wherein the functional group capable of bonding to the metal surface is a phosphate group, and the metallic bonding compound (A) and the antibacterial layer-forming compound (B) are capable of forming a covalent bond.

2 . The two-component treatment agent according to claim 1 ,
wherein the antibacterial layer-forming compound (B) is a reaction product of an antibacterial compound (B1) and a base material resin (B2), and the antibacterial layer-forming compound (B) is capable of forming a covalent bond with the metallic bonding compound (A).

3 . The two-component treatment agent according to claim 2 ,
wherein the base material resin (B2) is an olefin-based polymer having a constituent unit derived from an olefin having an amino group or polyethyleneimine.

4 . The two-component treatment agent according to claim 2 ,
wherein the base material resin (B2) is an olefin-based polymer having a constituent unit derived from an olefin having an amino group or polyethyleneimine, and the antibacterial compound (B1) is a compound having an ethylenic unsaturated double bond and an antibacterial group.

5 . The two-component treatment agent according to claim 4 , wherein the antibacterial group is at least one selected from a quaternary ammonium salt group and a pyridinyl group.

6 . The two-component treatment agent according to claim 5 , wherein the antibacterial compound is at least one selected from the group consisting of a compound represented by the following formula (b1):
CH 2 ═CR b1 —CO—R b6 —R b2 —N + R b3 R b4 R b5 ·X −   (b1),
a compound represented by the following formula (b2):
X b1 —R b2 —N + R b3 R b4 R b5 ·X −   (b2),

2-vinylpyridine, 3-vinylpyridine and 4-vinylpyridine, wherein, in the formula (b1), R b1 is a hydrogen atom or a methyl group, R b2 is an alkylene group having 1 or more and 8 or less carbon atoms, R b3 , R b4 and R b5 are each independently an alkyl group having 1 or more and 4 or less carbon atoms or an aralkyl group having 7 or more and 10 or less carbon atoms, R b6 is —O— or —NH—, and X is a counter anion for a quaternary ammonium cation, and wherein, in the formula (b2), R b2 is an alkylene group having 1 or more and 8 or less carbon atoms, R b3 , R b4 and R b5 are each independently an alkyl group having 1 or more and 4 or less carbon atoms or an aralkyl group having 7 or more and 10 or less carbon atoms, X-is a counter anion for a quaternary ammonium cation, and X b1 is a halogen atom.

7 . A treatment method for making a metal surface antibacterial using the two-component treatment agent according to claim 1 , the method comprising:
a primer treatment of applying the primer solution to the metal surface and then bonding the metallic bonding compound (A) in the primer solution to the metal surface; and an antibacterial treatment of applying the antibacterial solution to the metal surface subjected to the primer treatment.

8 . The treatment method according to claim 7 , wherein the metal surface is a surface composed of stainless steel.

9 . An antibacterial treatment agent comprising an antibacterial layer-forming compound comprising a reaction product of an antibacterial compound (B1) and a base material resin (B2),
wherein the antibacterial compound (B1) comprises a low-molecular-weight compound represented by the following formula (b1):
CH 2 ═CR b1 —CO—R b6 —R b2 —N + R b3 R b4 R b5 ·X −   (b1), or

a compound represented by the following formula (b2):
X b1 —R b2 —N + R b3 R b4 R b5 ·X −   (b2),

wherein, in the formula (b1), R b1 is a hydrogen atom or a methyl group, R b2 is an alkylene group having 1 or more and 8 or less carbon atoms, R b3 , R b4 and R b5 are each independently an alkyl group having 1 or more and 4 or less carbon atoms or an aralkyl group having 7 or more and 10 or less carbon atoms, R b6 is —O— or —NH—, and X is a counter anion for a quaternary ammonium cation, wherein, in the formula (b2), R b2 is an alkylene group having 1 or more and 8 or less carbon atoms, R b3 , R b4 and R b5 are each independently an alkyl group having 1 or more and 4 or less carbon atoms or an aralkyl group having 7 or more and 10 or less carbon atoms, X is a counter anion for a quaternary ammonium cation, and X b1 is a halogen atom, and wherein the base material resin (B2) is an olefin-based polymer having a constituent unit derived from an olefin having an amino group or polyethyleneimine.

10 . The two-component treatment agent according to claim 1 , wherein the metallic bonding compound (A) is selected from the group consisting of a phosphate alkenyl ester and a phosphonooxyalkyl (meth)acrylate.

Assignees

• Tokyo Ohka Kogyo Co Ltd

Inventors

• Senzaki Takahiro

Classifications

• C09D201/02

  characterised by the presence of specified groups {, e.g. terminal or pendant functional groups} · CPC title

• B05D7/14

  to metal, e.g. car bodies (involving a chemical reaction between the metal and the coating C23) · CPC title

• A01N43/40

  six-membered rings · CPC title

• A01N33/12

  Quaternary ammonium compounds · CPC title

• C09D139/02

  Homopolymers or copolymers of vinylamine · CPC title