WO2023013643A1 - 抗菌剤、抗菌性樹脂組成物及び第4級アンモニウム塩 - Google Patents
抗菌剤、抗菌性樹脂組成物及び第4級アンモニウム塩 Download PDFInfo
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- WO2023013643A1 WO2023013643A1 PCT/JP2022/029669 JP2022029669W WO2023013643A1 WO 2023013643 A1 WO2023013643 A1 WO 2023013643A1 JP 2022029669 W JP2022029669 W JP 2022029669W WO 2023013643 A1 WO2023013643 A1 WO 2023013643A1
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- WIPO (PCT)
- Prior art keywords
- antibacterial
- group
- formula
- quaternary ammonium
- aliphatic hydrocarbon
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- VLTRZXGMWDSKGL-UHFFFAOYSA-M perchlorate Chemical compound [O-]Cl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-M 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000002504 physiological saline solution Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001721 polyimide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- 229920000582 polyisocyanurate Polymers 0.000 description 1
- 239000011495 polyisocyanurate Substances 0.000 description 1
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- FVSKHRXBFJPNKK-UHFFFAOYSA-N propionitrile Chemical compound CCC#N FVSKHRXBFJPNKK-UHFFFAOYSA-N 0.000 description 1
- 229940090181 propyl acetate Drugs 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000012488 sample solution Substances 0.000 description 1
- 238000013207 serial dilution Methods 0.000 description 1
- APSBXTVYXVQYAB-UHFFFAOYSA-M sodium docusate Chemical group [Na+].CCCCC(CC)COC(=O)CC(S([O-])(=O)=O)C(=O)OCC(CC)CCCC APSBXTVYXVQYAB-UHFFFAOYSA-M 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- 125000004079 stearyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 238000004659 sterilization and disinfection Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- WMOVHXAZOJBABW-UHFFFAOYSA-N tert-butyl acetate Chemical compound CC(=O)OC(C)(C)C WMOVHXAZOJBABW-UHFFFAOYSA-N 0.000 description 1
- 239000012085 test solution Substances 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000012137 tryptone Substances 0.000 description 1
- 125000002948 undecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000013026 undiluted sample Substances 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- 239000012138 yeast extract Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N33/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic nitrogen compounds
- A01N33/02—Amines; Quaternary ammonium compounds
- A01N33/12—Quaternary ammonium compounds
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01P—BIOCIDAL, PEST REPELLANT, PEST ATTRACTANT OR PLANT GROWTH REGULATORY ACTIVITY OF CHEMICAL COMPOUNDS OR PREPARATIONS
- A01P3/00—Fungicides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
Definitions
- the present invention relates to an antibacterial agent, an antibacterial resin composition using the same, and a quaternary ammonium salt.
- antibacterial resin compositions in which antibacterial agents are added to resins such as urethane resin, has been expanding due to hygiene needs in housing spaces and automobile cabins.
- Various inorganic and organic antibacterial agents are known as antibacterial agents added to resins, and quaternary ammonium salts, which are cationic surfactants exhibiting antibacterial properties, are also being investigated.
- Antibacterial agents comprising quaternary ammonium salts added to such resins include, for example, Patent Document 1 (International Publication No. 2016/043202), didecyldimethylammonium bromide, didecyldimethylammonium chloride, alkyl In addition to dimethylbenzylammonium chloride, didecyldimethylammonium adipate, etc., didecylmonomethylhydroxyethylammonium bromide, alkyldimethylhydroxyethylammonium chloride, N,N-didecyl-N-methyl-poly(oxyethyl)ammonium propionate -, didecylmonomethylhydroxyethylammonium adipate, didecylmonomethylhydroxyethylammonium gluconate, didecylmonomethylhydroxyethylammonium sulfonate, alkyldimethylhydroxyethylammonium adip
- Patent Document 2 Japanese Patent No. 4053635 describes the following quaternary ammonium salt (wherein R is a hydrogen atom or a hydrocarbon group, and x and y are integers of 1-4. ) is added to the urethane resin.
- One aspect of the present invention has been made in view of the above-described problems of the prior art, and has excellent antibacterial activity, and when added to a resin to form an antibacterial resin composition, an alcohol-resistant cleaning agent with antibacterial activity
- An object of the present invention is to provide an antibacterial agent having excellent properties, an antibacterial resin composition using the same, and a novel quaternary ammonium salt functioning as the antibacterial agent.
- the present invention provides the following aspects.
- An antibacterial agent comprising a quaternary ammonium salt represented by formula (1).
- R 1 is an aliphatic hydrocarbon group in which at least one hydrogen atom is substituted with a hydroxyl group, The number of carbon atoms in R1 is 4 to 11 when only one hydrogen atom is substituted with a hydroxyl group; 3 to 11 when two or more hydrogen atoms are substituted with hydroxyl groups;
- R 2 is an aliphatic hydrocarbon group having 10 to 18 carbon atoms,
- R 3 is an aliphatic hydrocarbon group having 1 to 3 carbon atoms,
- a or c is 2
- the aliphatic hydrocarbon group represented by R 1 is at least one selected from the group consisting of a hydroxyalkyl group having 4 to 11 carbon atoms and a dihydroxyalkyl group having 3 to 11 carbon atoms, [1 ] or the antibacterial agent according to [2].
- n represents an integer from 12 to 16
- X - represents a halide ion.
- the antibacterial agent according to one aspect of the present invention has excellent antibacterial activity, and when it is added to a resin to form an antibacterial resin composition, the antibacterial activity and alcohol resistance are excellent. Therefore, according to another aspect of the present invention, it is possible to obtain an antibacterial resin composition having excellent antibacterial activity and excellent resistance to alcohol washing.
- novel quaternary ammonium salts are provided that function as antibacterial agents with excellent antibacterial activity and resistance to alcohol washing.
- the present invention will be described in detail below in accordance with its preferred embodiments. First, an antibacterial agent according to one aspect of the present invention will be described.
- the antimicrobial agent has the formula (1): (R 1 ) a (R 2 ) b (R 3 ) c N + ⁇ X ⁇ (1)
- R 1 is an aliphatic hydrocarbon group in which at least one hydrogen atom is substituted with a hydroxyl group, The number of carbon atoms in R1 is 4 to 11 when only one hydrogen atom is substituted with a hydroxyl group; 3 to 11 when two or more hydrogen atoms are substituted with hydroxyl groups;
- R 2 is an aliphatic hydrocarbon group having 10 to 18 carbon atoms, R 3 is an aliphatic hydrocarbon group having 1 to 3 carbon atoms,
- R 3 is an aliphatic hydrocarbon group having 1 to 3 carbon atoms, which may be linear or branched, saturated or unsaturated, Alkyl groups are preferred, and linear alkyl groups are particularly preferred. Without such an aliphatic hydrocarbon group having 1 to 3 carbon atoms, the quaternary ammonium cation becomes less accessible to bacteria, resulting in a decrease in antibacterial activity and resistance to washing with alcohol.
- R 3 include a methyl group, an ethyl group, a propyl group, etc. Among them, a methyl group is preferable from the viewpoint that the antibacterial activity and its resistance to washing with alcohol tend to be further improved.
- the number (c) of R 3 is 1 or 2, and c is preferably 2 from the viewpoint that the antibacterial activity and its resistance to washing with alcohol tend to be further improved. Also, when there are multiple R3 's in one molecule, they may be the same or different.
- R 2 is an aliphatic hydrocarbon group having 10 to 18 carbon atoms, which may be linear or branched, saturated or unsaturated, Alkyl groups are preferred, and straight-chain alkyl groups are particularly preferred, because of their increased antibacterial activity.
- the carbon number of R 2 is 10 to 18, specifically, for example, 10, 11, 12, 13, 14, 15, 16, 17, 18, any two of the numerical values exemplified here It may be within the range of the upper and lower limits.
- the present inventors presume that R 2 is an aliphatic hydrocarbon group having 10 to 18 carbon atoms, so that it has sufficient hydrophobicity and exhibits antibacterial properties based on its action on cell membranes, so that the antibacterial activity is excellent. ing.
- R2 in terms of high antibacterial activity examples include decyl, undecyl, dodecyl, tridecyl, tetradecyl, pentadecyl, hexadecyl, heptadecyl and octadecyl groups.
- the number (b) of R2 is one.
- R 1 is an aliphatic hydrocarbon group in which at least one hydrogen atom is substituted with a hydroxyl group, and the aliphatic hydrocarbon group may be linear or branched. , which may be saturated or unsaturated, an alkyl group is preferred, and a straight-chain alkyl group is particularly preferred, since the antibacterial activity is enhanced.
- a hydroxyl group into at least one aliphatic hydrocarbon group in this way, when an antibacterial agent is added to the manufacturing process of a resin such as urethane, the functional group of the resin raw material and the hydroxyl group react to form a covalent bond, etc. Since it is immobilized on the resin by a bond (preferably a covalent bond), the antibacterial activity is improved in alcohol washing resistance.
- R 1 in formula (1) When R 1 in formula (1) has one substituted hydroxyl group, it must be an aliphatic hydrocarbon group having 4 to 11 carbon atoms.
- the hydrocarbon chain that is the linker between the cationic site and the hydroxyl group affects the antibacterial activity, and when the number of substituted hydroxyl groups is one, the number of carbon atoms in the aliphatic hydrocarbon group is less than 4, or the aliphatic hydrocarbon group exceeds 11 carbon atoms, the antibacterial activity is reduced.
- R 1 in formula (1) has one substituted hydroxyl group, the number of carbon atoms in R 1 is 4 to 11, or may be 5 to 11.
- R 1 is preferably a hydroxyalkyl group having 4 to 11 carbon atoms, such as a hydroxybutyl group, a hydroxypentyl group, a hydroxyhexyl group, a hydroxyheptyl group, a hydroxyoctyl group, a hydroxynonyl group, a hydroxydecyl group, a hydroxyun A decyl group etc. are mentioned as an example.
- the position where the hydroxyl group is bonded to the aliphatic hydrocarbon group is not particularly limited, but when added to the resin, it tends to react more easily with the functional group of the resin, and the antibacterial activity tends to further improve the alcohol washing resistance. From the viewpoint of being in, it is preferable that a hydroxyl group is bonded to the terminal carbon atom on the side not bonded to the N atom.
- R 1 in formula (1) When R 1 in formula (1) has two or more substituted hydroxyl groups, it must be an aliphatic hydrocarbon group having 3 to 11 carbon atoms.
- the hydrocarbon chain that is the linker between the cationic site and the hydroxyl group affects the antibacterial activity, and when the number of substituted hydroxyl groups is two or more, the number of carbon atoms in the aliphatic hydrocarbon group is less than 3, or the aliphatic carbonization When the number of carbon atoms in the hydrogen group exceeds 11, the antibacterial activity is lowered.
- R 1 in formula (1) has two or more substituted hydroxyl groups, R 1 has 3 to 11 carbon atoms, specifically, for example, 3, 4, 5, 6, 7.
- R 1 examples include a dihydroxypropyl group, a dihydroxybutyl group, a dihydroxypentyl group, a dihydroxyhexyl group, a dihydroxyheptyl group, a dihydroxyoctyl group, a dihydroxynonyl group, a dihydroxydecyl group, a dihydroxyundecyl group, a trihydroxypropyl group, Examples include a trihydroxybutyl group, a trihydroxypentyl group, a trihydroxyhexyl group, a trihydroxyheptyl group, a trihydroxyoctyl group, a trihydroxynonyl group, a trihydroxydecyl group, and a trihydroxyundecyl group.
- the number of substituted hydroxyl groups is preferably three or less, and two. is more preferred.
- R 1 is preferably a dihydroxyalkyl group having 3 to 11 carbon atoms.
- the position where the hydroxyl group is bonded to the aliphatic hydrocarbon group is not particularly limited, but when added to the resin, it becomes easier to react with the functional group of the resin, and the antibacterial activity and alcohol washing resistance are further improved. From the viewpoint that there is a tendency to preferable.
- the total number of carbon atoms of the aliphatic hydrocarbon groups represented by R 1 , R 2 and R 3 in one molecule of the quaternary ammonium salt represented by formula (1) is 15 or more and 23 or less. is necessary.
- the total number of carbon atoms in the aliphatic hydrocarbon groups (R 1 to R 3 ) attached to the N atom of the quaternary ammonium salt also affects the antibacterial activity. If the total number of carbon atoms exceeds 23, the antibacterial activity will decrease.
- the total number of carbon atoms of the aliphatic hydrocarbon groups represented by R 1 , R 2 and R 3 is 15 or more and 23 or less. 22 and 23, and any two of the numerical values exemplified here may be within a range having upper and lower limits.
- X 1 - in formula (1) is a conjugate base of an acid. It is preferred that X - is the conjugate base of a strong acid.
- X - is the conjugate base of a strong acid.
- Conjugate bases of strong acids include halide ions such as bromine (Br), chlorine (Cl), fluorine (F), and iodine (I), nitrate ions, sulfate ions, phosphate ions, perchlorate ions, and the like.
- halide ions such as bromine (Br), chlorine (Cl), fluorine (F), and iodine (I), nitrate ions, sulfate ions, phosphate ions, perchlorate ions, and the like.
- the halide ion is preferable, and bromine (Br) or chlorine (Cl) is particularly preferable, from the viewpoint that the antibacterial activity tends to be further improved.
- the method for producing the antibacterial agent according to one aspect of the present invention is not particularly limited, but for example the following method. is preferably adopted.
- the reaction solvent used in the quaternization reaction is not particularly limited, and acetonitrile, propanenitrile, dimethylformamide (hereinafter sometimes referred to as DMF), dimethylsulfoxide (hereinafter sometimes referred to as DMSO), nitromethane, Nitroethane, benzonitrile, nitrobenzene, methanol, ethanol, propanol, 2-propanol, butanol, methyl acetate, ethyl acetate, propyl acetate, isopropyl acetate, butyl acetate, isobutyl acetate, tert-butyl acetate, toluene, xylene, chlorobenzene, o- Examples include dichlorobenzene, m-dichlorobenzene, nitrobenzene, etc. Among them, acetonitrile is preferable from the viewpoint of good yield.
- the antibacterial resin composition is obtained by immobilizing the antibacterial agent on a resin containing functional groups reactive with hydroxyl groups.
- Examples of functional groups reactive with hydroxyl groups include isocyanate groups and epoxy groups. Among them, covalent bonds are formed by reaction with hydroxyl groups in a temperature range where quaternary ammonium does not decompose, and are immobilized on the resin.
- An isocyanate group is preferable from the viewpoint that the antibacterial activity tends to further improve the alcohol-resistant washability.
- Resins containing such functional groups are not particularly limited, but examples thereof include urethane resins, urea resins, urethane urea resins, polyimide resins, polyoxazolidone resins, polycarbodiimide resins, polyisocyanurate resins, and the like. Among them, urethane resins obtained from polyisocyanate and polyol, poly Urea resins obtained from isocyanates and polyamines, and urethane urea resins obtained from polyisocyanates, polyols and polyamines (monoamines) are preferred.
- the amount of the antibacterial agent added in the antibacterial resin composition is not particularly limited, and is appropriately adjusted according to the purpose, etc., but usually the amount of the antibacterial agent added in the resin composition is 5% by mass or less. and more preferably 0.1 to 5% by mass.
- antioxidants for example, antioxidants, ultraviolet absorbers, pigments, paints, solvents, flame retardants, hydrolysis inhibitors, lubricants, plasticizers, fillers, antistatic Additives such as agents, dispersants, catalysts, storage stabilizers, surfactants, leveling agents, etc., can be added as appropriate.
- the method for obtaining the antibacterial resin composition by immobilizing the antibacterial agent on the resin is not particularly limited, for example, the following method is preferably employed.
- An antibacterial agent is mixed in a resin-forming composition in the previous step of reacting resin raw materials (e.g., polyisocyanate and polyol), and the resulting resin-forming composition is reacted to obtain an antibacterial resin.
- a method of obtaining the composition is preferably employed.
- a method for obtaining an antibacterial resin composition by mixing resin pellets or powdery resin and an antibacterial agent in a mixer, and then heat-melting and kneading them in an extruder.
- the shape and the like of the antibacterial resin composition are not particularly limited. It is used for various applications with high hygienic needs in automobile cabins.
- a first quaternary ammonium salt according to one aspect of the present invention has the formula (2):
- n represents an integer of 6 to 11, specifically, for example, 6, 7, 8, 9, 10, 11, within the range of upper and lower limits any two of the numerical values exemplified here good too.
- n represents an integer from 10 to 14, specifically, for example, 10, 11, 12, 13, 14, any two of the numerical values exemplified here may be within a range of upper and lower limits .
- m+n satisfies 16 to 21, specifically, for example, 16, 17, 18, 19, 20, 21, any two of the numerical values exemplified here may be within the range of upper and lower limits .
- quaternary ammonium salts represented by formula (2) those in which m is 6 and n is an integer of 12 to 14 are preferred, and such quaternary ammonium salts are represented by formula (3):
- n an integer from 12 to 14
- X - represents a halide ion.
- the second quaternary ammonium salt according to one aspect of the present invention has the formula (5):
- n an integer from 12 to 16
- X - represents a halide ion.
- the quaternary ammonium salts represented by formulas (2) to (5) have excellent antibacterial activity, and when added to a resin to form an antibacterial resin composition, the antibacterial activity and alcohol resistance are excellent. It is a novel compound that functions as an antibacterial agent.
- the quaternary ammonium salts represented by formulas (2) to (5) can be produced according to the above-described methods 1 to 4, and the quaternary ammonium salts represented by formula (2)
- the salts are Examples 1 to 5 described later
- the quaternary ammonium salts represented by the formula (3) are described later as Examples 2 and 3
- the quaternary ammonium salts represented by the formula (4) are described later.
- Example 1 the quaternary ammonium salt represented by formula (5) was actually produced as Examples 7 and 8, which will be described later.
- the antibacterial agent according to one aspect of the present invention has excellent antibacterial activity, and when added to a resin to form an antibacterial resin composition, the antibacterial activity and alcohol-resistant washability are excellent. . Therefore, according to another aspect of the present invention, it is possible to obtain an antibacterial resin composition having excellent antibacterial activity and excellent resistance to alcohol washing.
- novel quaternary ammonium salts are provided that function as antibacterial agents with excellent antibacterial activity and resistance to alcohol washing.
- the structural analysis of the antibacterial agent, the antibacterial evaluation of the antibacterial agent, and the antibacterial evaluation of the antibacterial treated urethane resin were performed and evaluated by the following methods.
- each antibacterial agent was determined by NMR spectroscopy.
- Deuterated chloroform manufactured by ambridge Isotope Laboratories, Inc., hereinafter referred to as CDCl 3
- deuterated dimethyl sulfoxide manufactured by ambridge Isotope Laboratories, Inc., hereinafter Using DMSO-d 6
- each antibacterial agent was dissolved at a concentration of 1% by mass based on the chemical shift standard, and a nuclear magnetic resonance apparatus (manufactured by Bruker, "AVANCE II”) was used to analyze at 400 MHz ( 1 H- NMR) frequency.
- the antibacterial activity of each antibacterial agent was evaluated by measuring the minimum inhibitory concentration (MIC).
- the stock solution was diluted 10-fold with the Nutrient liquid medium to obtain a solution with the maximum diluted concentration (800 ⁇ g/mL).
- the poorly water-soluble test substance was adjusted to a concentration of 80 mg/mL with dimethyl sulfoxide (manufactured by Tokyo Kasei Kogyo Reagent Co., Ltd.), and the unsterilized one was used as the stock solution.
- the stock solution was diluted 100-fold with the Nutrient liquid medium to obtain a solution with the maximum diluted concentration (800 ⁇ g/mL).
- test substance solution was prepared by diluting the test substance (antibacterial agent) with the Nutrient liquid medium so that there were 11 levels, including the maximum concentration at a dilution rate of 2, with the solution with the maximum diluted concentration as the maximum concentration.
- 100 ⁇ L of each test substance solution was dispensed into a 96-well microplate (U-shaped well), and each well was inoculated with 5 ⁇ L of the inoculum solution of each test bacterium.
- 100 ⁇ L of Nutrient liquid medium containing no test substance was dispensed into a 96-well microplate and inoculated with 5 ⁇ L of the inoculum solution of each test bacterium. served as a growth control.
- a 96-well microplate was sealed with an air-permeable sheet, and the test solution was allowed to stand and culture at 30°C for 48 hours. After culturing, when no turbidity or sedimentation was observed with the naked eye, and even if there was one sedimentation with a diameter of 1 mm or less, the growth inhibition was determined. After confirming the growth of test bacteria in the nutrient liquid medium containing no test substance used as a control, the lowest test substance concentration in wells in which no growth of bacteria was visually observed was taken as the MIC. Each test substance was tested twice, and the average value was used as the measured value.
- NA medium double concentration Nutrient liquid medium (manufactured by Difco) + 5.0 g / L: NaCl + 15 g / L: agar) 2) NB medium (ordinary bouillon medium, manufactured by Eiken Chemical Co., Ltd.) 3) SCDLP medium (Daigo, manufactured by Nihon Pharmaceutical Co., Ltd.) 4) SA medium (2.5 g / L: yeast extract, 5.0 g / L: tryptone peptone, 1.0 g / L: glucose, 15 g / L: agar) 5) Phosphate buffered saline (42.5 mg/L: KH2PO4 , 8.5 g/L: NaCl, pH : 7.2).
- test bacteria Staphylococcus epidermidis NBRC 100911 Test bacteria Staphylococcus epidermidis NBRC 100911
- Test Bacterial Solution A strain that had been cryopreserved was cultured in NA medium at 35° C. for 24 hours. This culture was transferred to new NA medium and cultured at 35° C. for 24 hours. The grown colonies were scraped off and adjusted to about 1 ⁇ 10 6 cells/mL with 1/100 concentration NB medium, and this was used as a test fungus solution.
- Test method was carried out as follows with reference to "JIS Z2801:2012 Antibacterial processed products Antibacterial test method/antibacterial effect”. 1) Inoculation and culture of test bacteria solution Cut into 50 mm squares, wipe and disinfect the entire surface with a paper wipe soaked with 99% ethanol, and then completely dry the test product (antibacterial treated urethane resin and untreated urethane resin ) was placed on a Petri dish, and 0.4 mL of the test bacterial solution was dropped. A 40 mm square covering film (polyethylene film) was placed on the dripped test fungus solution, and the test fungus solution was brought into close contact with the entire test article.
- test product antibacterial treated urethane resin and untreated urethane resin
- Bacterial growth inhibition rate (%) ⁇ 1-(test bacteria count of antibacterial urethane resin 24 hours after inoculation) / (test bacteria count of unprocessed urethane resin 24 hours after inoculation) ⁇ ⁇ 100 (formula 1).
- N-(2,3-dihydroxypropyl)-N-hexadecyl-N A white solid of N-dimethylammonium bromide (yield: 5.47 g, yield: 85%) was obtained.
- the NMR analysis results of the obtained antibacterial agent are as follows, and Table 1 shows the antibacterial evaluation results.
- N-dodecyl-N-(2,3-dihydroxypropyl)-N A white solid of N-dimethylammonium bromide (yield: 4.82 g, yield: 85%) was obtained.
- the NMR analysis results of the obtained antibacterial agent are as follows, and Table 1 shows the antibacterial evaluation results.
- Antibacterial Urethane Resin Production Example 1 Example 1/PU-A 45.7 g of polyisocyanate (isocyanurate-type polyisocyanate based on hexamethylene diisocyanate: "Coronate HXR" manufactured by Tosoh Corporation, NCO average functionality 3.5, NCO content 21.0%) temperature-controlled to 60 ° C.; 54.3 g of polyol (polycarbonate diol based on hexanediol: manufactured by Tosoh Corporation, OH functionality: 2, molecular weight: 500) and 1 g of antibacterial agent A were mixed, and dioctyl was used as a catalyst.
- polyisocyanate isocyanurate-type polyisocyanate based on hexamethylene diisocyanate: "Coronate HXR" manufactured by Tosoh Corporation, NCO average functionality 3.5, NCO content 21.0
- polyol polycarbonate diol based on hexanediol: manufactured
- a urethane resin-forming composition was prepared by adding 0.01 g of tin dilaurate (“special grade reagent” manufactured by Tokyo Chemical Industry Co., Ltd.) and mixing. This composition was sufficiently defoamed under a reduced pressure of 5 mmHg, poured into a mold for forming a flat plate of 2 mm thickness preheated to 100 to 120° C., and cured in an atmosphere of 100° C. for 30 minutes. After that, the cured urethane resin composition was taken out and cured in an atmosphere of 40 to 50° C. for 24 hours to obtain an antibacterial urethane resin composition (PU-A).
- Table 1 shows the evaluation results of the antibacterial properties of the obtained antibacterial urethane resin composition.
- Antibacterial Urethane Resin Production Examples 2-11 Examples 2-8/PU-B-PU-H, Comparative Examples 1-3/PU-I-PU-K
- Antibacterial urethane resin compositions (Examples 2 to 8/ PU-B to PU-H) and comparative antibacterial urethane resin compositions (Comparative Examples 1 to 3/PU-I to PU-K) were obtained.
- Table 1 shows the evaluation results of the antibacterial properties of the obtained antibacterial urethane resin composition.
- the antibacterial agent according to one aspect of the present invention comprising a quaternary ammonium salt according to one aspect of the present invention has excellent antibacterial activity compared to the antibacterial agent for comparison. Furthermore, when added to a urethane resin to form an antibacterial resin composition, the antibacterial resin composition according to one aspect of the present invention has an antibacterial activity and alcohol resistance compared to the antibacterial resin composition for comparison. It was confirmed that the washability was excellent.
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JPH0812506A (ja) * | 1994-06-28 | 1996-01-16 | Nikka Chem Co Ltd | 抗菌効果を有する衣料用害虫忌避剤 |
JP2012522063A (ja) * | 2009-03-27 | 2012-09-20 | カール・フロイデンベルク・カー・ゲー | 反応性ポリウレタン乳濁液を製造するための方法 |
US20190106525A1 (en) * | 2017-10-06 | 2019-04-11 | The University Of Akron | Contact-killing, qac functionalized thermoplastic polyurethane for catheter applications |
-
2022
- 2022-08-02 JP JP2023540366A patent/JPWO2023013643A1/ja active Pending
- 2022-08-02 WO PCT/JP2022/029669 patent/WO2023013643A1/ja active Application Filing
- 2022-08-04 TW TW111129323A patent/TW202312876A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0812506A (ja) * | 1994-06-28 | 1996-01-16 | Nikka Chem Co Ltd | 抗菌効果を有する衣料用害虫忌避剤 |
JP2012522063A (ja) * | 2009-03-27 | 2012-09-20 | カール・フロイデンベルク・カー・ゲー | 反応性ポリウレタン乳濁液を製造するための方法 |
US20190106525A1 (en) * | 2017-10-06 | 2019-04-11 | The University Of Akron | Contact-killing, qac functionalized thermoplastic polyurethane for catheter applications |
Non-Patent Citations (2)
Title |
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D. B. KUDRYAVTSEV; A. R. PANTELEEVA; A. V. YURINA; A. D. VOLOSHINA; S. S. LUKASHENKO; V. V. ZOBOV; YU. P. KHODYREV; A. B. MIRGOROD: "Anticorrosive effects and antimicrobial properties of alkyldimethyl(hydroxyalkyl)ammonium bromides", PETROLEUM CHEMISTRY, NAUKA/INTERPERIODICA, MO, vol. 51, no. 4, 27 July 2011 (2011-07-27), Mo , pages 293 - 298, XP019931018, ISSN: 1555-6239, DOI: 10.1134/S096554411103008X * |
PALEOS C. M., ARKAS M., SKOULIOS A.: "Mesomorphic Character of Quaternary Ammonium Salts Affected by Secondary Hydrogen Bonding Interactions", MOLECULAR CRYSTALS AND LIQUID CRYSTALS, TAYLOR & FRANCIS INC., US, vol. 309, no. 1, 1 January 1998 (1998-01-01), US , pages 237 - 250, XP093033266, ISSN: 1058-725X, DOI: 10.1080/10587259808045531 * |
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TW202312876A (zh) | 2023-04-01 |
JPWO2023013643A1 (zh) | 2023-02-09 |
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