WO2023287062A1 - 항균성 공중합체 - Google Patents
항균성 공중합체 Download PDFInfo
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- WO2023287062A1 WO2023287062A1 PCT/KR2022/009131 KR2022009131W WO2023287062A1 WO 2023287062 A1 WO2023287062 A1 WO 2023287062A1 KR 2022009131 W KR2022009131 W KR 2022009131W WO 2023287062 A1 WO2023287062 A1 WO 2023287062A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
- C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
- C08F220/10—Esters
- C08F220/34—Esters containing nitrogen, e.g. N,N-dimethylaminoethyl (meth)acrylate
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F8/00—Chemical modification by after-treatment
- C08F8/18—Introducing halogen atoms or halogen-containing groups
- C08F8/20—Halogenation
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/14—Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur or oxygen atoms in addition to the carboxy oxygen
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/14—Paints containing biocides, e.g. fungicides, insecticides or pesticides
Definitions
- the present invention relates to an antimicrobial copolymer exhibiting excellent antibacterial properties.
- microorganisms such as bacteria and molds may inhabit various environments such as diet, living environment, clothing, and industrial products.
- bacteria may cause various inflammations or food poisoning, and molds only cause odor
- it is a problem because it can cause various skin diseases, respiratory diseases, allergies, and atopic dermatitis.
- microorganisms inhabiting the surface of electronic products and household goods it may be a factor in deteriorating product performance.
- the inorganic antibacterial agent is an antimicrobial agent containing a metal such as silver or copper, and has the advantage of being excellent in thermal stability and maintaining antibacterial properties even under high temperature conditions, but is expensive and may discolor due to metal ions included after processing there is a problem.
- organic antibacterial agents have the advantage of being cheaper than inorganic antimicrobial agents and having excellent antibacterial effect even in small amounts, but there is a problem that antibacterial persistence is not good because they may be eluted after application to a product.
- organic antibacterial agents can secure the stability of products in terms of inhibition of propagation and death of microorganisms, but at the same time, they are toxic and cause irritation to the user's skin.
- an antibacterial material that has excellent antibacterial properties, can sustain antibacterial properties, and ensures human safety.
- Patent Document 0001 Korea Patent Registration No. 10-0601393
- the present invention is to provide an antibacterial copolymer that is environmentally friendly and advantageous in terms of human safety while maintaining excellent antibacterial activity continuously.
- the present invention is to provide an antimicrobial article comprising the antimicrobial copolymer.
- the first repeating unit is included in 3 to 60 mol% with respect to the total number of moles of the first repeating unit and the second repeating unit,
- An antimicrobial copolymer is provided:
- L is an alkylene having 1 to 10 carbon atoms
- R 1 to R 3 are each independently hydrogen or methyl
- R 4 to R 6 One is an alkyl having 5 to 20 carbon atoms, and the others are each independently an alkyl having 1 to 4 carbon atoms,
- X is halogen
- the present invention provides an antimicrobial article comprising the antimicrobial copolymer described above.
- the antimicrobial copolymer according to the present invention has an advantage in that safety of the human body can be secured while excellent antibacterial properties are continuously maintained.
- first and second are used to describe various components, and the terms are used only for the purpose of distinguishing one component from another.
- each layer or element when each layer or element is referred to as being formed “on” or “on” each layer or element, it means that each layer or element is formed directly on each layer or element, or other This means that layers or elements may be additionally formed between each layer or on the object or substrate.
- (meth)acrylate used herein includes both acrylate and methacrylate.
- the alkyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 20. According to one embodiment, the number of carbon atoms of the alkyl group is 1 to 10.
- alkyl group examples include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethylbutyl, pentyl, n -pentyl, isopentyl, neopentyl, tert-pentyl, 1-ethyl-propyl, 1,1-dimethylpropyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl, n-heptyl, isohexyl, 1-methylhexyl, 2-methylhexyl, 3-methylhexyl, 4-methylhexyl, 5-methylhexyl, cyclopent
- bacteria there are so many different types of bacteria (germs) that more than 5,000 have been identified. Specifically, bacteria have various cell shapes such as ball, rod, spiral, etc., and the degree of oxygen demand is also different for each bacteria, so they are divided into aerobic bacteria, facultative bacteria and anaerobic bacteria. Therefore, it has not been easy for one type of antibacterial agent to have a physical/chemical mechanism that can damage the cell membrane/cell wall or denature the protein of various bacteria.
- a copolymer further comprising a repeating unit derived from a comonomer capable of realizing different physical properties along with a repeating unit containing a quaternary ammonium salt moiety can be applied to various applications depending on the type of comonomer while continuously exhibiting excellent antibacterial properties. As confirmed, the present invention was completed.
- these antimicrobial copolymers are effective against at least one of Gram-positive bacteria and Gram-negative bacteria, more specifically, against Gram-positive bacteria and Gram-negative bacteria. bacteria) can show antibacterial activity.
- the Gram-positive bacteria is a generic term for bacteria that are stained purple when stained by the Gram staining method.
- the cell wall of Gram-positive bacteria is composed of multiple layers of peptidoglycan, so even after staining with a basic dye such as crystal violet, treatment with ethanol can decolorize. It doesn't work, and it turns purple.
- Bacteria classified as Gram-positive bacteria include Enterococcus faecalis, Staphylococcus aureus, Streptococcus pneumoniae, Enterococcus faecium, or Lactobacillus lactis , etc. there is
- the Gram-negative bacteria are a generic term for bacteria that are stained red when stained by the Gram staining method, and instead of having a cell wall with a relatively small amount of peptidoglycan compared to Gram-positive bacteria, lipopolysaccharides, lipoproteins, and other complex It has an outer membrane composed of a polymer material. Accordingly, when dyed with a basic dye such as crystal violet and then treated with ethanol, discoloration occurs, and when counterstained with a red dye such as safranin, a red color is displayed.
- Bacteria classified as Gram-negative bacteria include Proteus mirabilis, Escherichia coli, Salmonella typhi, Pseudomonas aeruginosa, and Vibrio cholerae.
- the gram-positive and gram-negative bacteria can cause various diseases upon contact, and can also cause secondary infection in severely ill patients with low immunity. It is desirable to indicate
- the antimicrobial copolymer includes the first repeating unit represented by Chemical Formula 1, thereby exhibiting antibacterial activity against at least one of gram-positive bacteria and gram-negative bacteria.
- the ammonium cation of the quaternary ammonium salt is electrostatically attached to the cell wall of Gram-positive or Gram-negative bacteria. Adsorption, and then the surface layer structure of the bacteria cell by interaction with the alkyl group of the quaternary ammonium salt showing hydrophobicity, the coating composition can exhibit antibacterial properties.
- An antimicrobial copolymer of one embodiment a first repeating unit represented by the following formula (1); and a second repeating unit derived from a monomer having at least one ethylenically unsaturated group:
- L is an alkylene having 1 to 10 carbon atoms
- R 1 to R 3 are each independently hydrogen or methyl
- R 4 to R 6 One is an alkyl having 5 to 20 carbon atoms, and the others are each independently an alkyl having 1 to 4 carbon atoms,
- X is halogen
- the first repeating unit exhibiting antibacterial properties may be included in an amount of 3 to 60 mol% based on the total number of moles of the first repeating unit and the second repeating unit in the copolymer.
- the content of the first repeating unit is less than 3 mol%, it is difficult to exhibit a sufficient antibacterial effect, and when the content of the first repeating unit exceeds 60 mol%, chemical stability may be deteriorated, which may cause problems in application.
- n:m 3:97 to 60:40.
- the first repeating unit is present in an amount of 3 mol% or more, 5 mol% or more, 10 mol% or more, or 20 mol% or more based on the total number of moles of the first repeating unit and the second repeating unit in the copolymer. , 23.1 mol% or more, 25 mol% or more, 30 mol% or more, and may be included in 60 mol% or less, 50 mol% or less, 40 mol% or less, 35 mol% or less, or 33.3 mol% or less.
- the quaternary ammonium cation included in the first repeating unit has a linker (L) connected to the main chain and three terminal groups R 4 , R 5 and R 6 substituents.
- the linker (L) may be a linear alkylene having 1 to 10 carbon atoms. More specifically, L can be 1 to 5 linear alkylene, such as methylene, ethylene or propylene.
- one of the three terminal groups R 4 , R 5 and R 6 substituents substituted for the quaternary ammonium cation of the first repeating unit is alkyl having 5 to 20 carbon atoms. More specifically, one of the R 4 , R 5 and R 6 substituents is a linear, ie, straight-chain alkyl of 5 to 20 carbon atoms.
- R 4 , R 5 and R 6 If all of the substituents are alkyl having less than 5 carbon atoms, there is a problem of not exhibiting antimicrobial properties, and if any of the R 4 , R 5 and R 6 substituents are alkyl having more than 20 carbon atoms, the above There is an aspect in which the synthesis itself is impossible because the starting material for preparing the copolymer is not dissolved in a solvent.
- R 4 to R 6 One is an alkyl of 5 to 20 carbon atoms, and the others may each independently be methyl or ethyl.
- R 5 is alkyl having 5 to 20 carbon atoms, and R 4 and R 6 may each independently be methyl or ethyl.
- R 1 is methyl
- R 2 and R 3 are hydrogen
- R 4 to R 6 one is alkyl of 5 to 20 carbon atoms and the others are each independently methyl or ethyl; or
- R 1 to R 3 are hydrogen, and among R 4 to R 6 One is an alkyl of 5 to 20 carbon atoms, and the others may each independently be methyl or ethyl.
- the remaining two substituents other than alkyl having 5 to 20 carbon atoms may be identical to each other.
- R 4 , R 5 and R 6 One may have 6 or more, 7 or more, or 8 or more carbon atoms, and 20 or less, 18 or less, 16 or less, 14 or less, or 12 or less.
- the antimicrobial copolymer including the first repeating unit represented by Formula 1 may exhibit better antibacterial properties.
- R 1 is methyl
- R 2 and R 3 are hydrogen
- R 5 is alkyl having 6 to 16 carbon atoms
- R 4 and R 6 can each independently be methyl or ethyl.
- the antimicrobial copolymer including the first repeating unit having such a structure may exhibit excellent antibacterial activity against at least one of Gram-positive bacteria and Gram-positive bacteria, more specifically, against both Gram-positive bacteria and Gram-negative bacteria.
- X may be a halogen, preferably, chloro (Cl) or bromo (Br).
- repeating unit represented by Chemical Formula 1 may be represented by any one of the following Chemical Formulas 1-1 to 1-4:
- a is an integer from 2 to 9;
- b is an integer from 2 to 8;
- X is halogen
- a may be 2, 3, 4, 5, 6, 7, 8, or 9, and b may be 2, 3, 4, 5, 6, 7 , or 8.
- the first repeating unit represented by Chemical Formula 1 may be derived from a monomeric compound represented by Chemical Formula 1' below.
- the first repeating unit is any one selected from the group consisting of:
- the second repeating unit is derived from a monomer having at least one ethylenically unsaturated group, and may form a copolymer together with the first repeating unit.
- the copolymer may be a random copolymer in which the first repeating unit and the second repeating unit are randomly arranged with each other.
- the monomer having at least one ethylenically unsaturated group is one selected from the group consisting of an alkyl (meth) acrylate-based monomer, a halogenated vinyl monomer, a vinyl alkylate-based monomer, an alkenyl cyanide monomer, and an aromatic vinyl-based monomer may be ideal
- the alkyl (meth) acrylate monomers are methyl acrylate, ethyl acrylate, propyl acrylate, isopropyl acrylate, n-butyl acrylate, isobutyl acrylate, n-amyl acrylate, isoamyl acrylate, n -Ethylhexyl acrylate, 2-ethylhexyl acrylate, methyl methacrylate, ethyl methacrylate, propyl methacrylate, isopropyl methacrylate, n-butyl methacrylate, isobutyl methacrylate, n-amyl Methacrylate, isoamyl methacrylate, n-hexyl methacrylate, n-ethylhexyl methacrylate, 2-ethylhexyl methacrylate, lauryl acrylate, cetyl acrylate, stearyl acrylate, la
- halogenated vinyl monomer may be vinyl chloride, vinyl bromide, vinylidene chloride, or tetrafluoroethylene.
- the vinyl alkylate-based monomer is a vinyl alkylate such as vinyl acetate (CH 2 CH-OC(O)R, where R is an alkyl having 1 to 10 carbon atoms), vinyl pyrrolidone, vinyl carbazole, or vinyl alkyl. ether (CH 2 CH—OR, where R is an alkyl of 1 to 10 carbon atoms).
- the alkenyl cyanide monomer is a monomer containing both an ethylenically unsaturated group and a nitrile group in a molecule, and examples thereof include acrylonitrile, methacrylonitrile, and allyl cyanide.
- the aromatic vinyl monomer is styrene, ⁇ -methylstyrene, ⁇ -methylstyrene, p-t-butylstyrene, chlorostyrene, vinylbenzoic acid, vinylmethylbenzoate, vinylnaphthalene, chloromethylstyrene, hydroxymethylstyrene, or divinyl It may be benzene, preferably styrene.
- the monomer having at least one ethylenically unsaturated group may be methyl (meth)acrylate, vinyl chloride, vinyl acetate, acrylonitrile, or styrene.
- the antimicrobial copolymer may have a weight average molecular weight (Mw) of 10,000 to 1,000,000 g/mol. If the weight average molecular weight of the antimicrobial copolymer is less than 10,000 g / mol, some molecules may exist in the form of monomers or oligomers rather than polymers, so they can be easily eluted, and furthermore, due to low molecular weight, there is a problem of absorption into the human body And, when the weight average molecular weight of the antimicrobial copolymer exceeds 1,000,000 g / mol, there may be a problem in processability.
- Mw weight average molecular weight
- the antimicrobial copolymer has a weight average molecular weight (Mw; g / mol) of 10,000 or more, 15,000 or more, 20,000 or more, 23,000 or more, 25,000 or more, 25,636 or more, 29,376 or more, 1,000,000 or less, 500,000 or less, 300,000 or less , 100,000 or less, 50,000 or less, 40,000 or less, 35,000 or less, or 31,246 or less.
- Mw weight average molecular weight
- the weight average molecular weight (Mw) of the antimicrobial copolymer may be measured using gel permeation chromatography (GPC) using polystyrene (PS) as a standard sample for calibration. More specifically, after diluting 200 mg of the antimicrobial copolymer in 200ml N,N-Dimethylformamide (DMF) solvent to prepare a sample of about 1000ppm, using an Agilent 1200 series GPC instrument, through an RI detector at 1ml / min Flow The weight average molecular weight can be measured. At this time, the molecular weight of the sample can be calculated based on this after preparing a calibration curve using eight standard PS standards.
- GPC gel permeation chromatography
- PS polystyrene
- the antimicrobial copolymer may exhibit an excellent antibacterial effect against microorganisms, particularly at least one of Gram-positive bacteria and Gram-negative bacteria.
- the antimicrobial copolymer may exhibit antibacterial activity against at least one type of bacteria classified as Gram-positive bacteria.
- the antimicrobial copolymer may exhibit antibacterial activity against one or more bacteria classified as Gram-negative bacteria.
- the antimicrobial copolymer may exhibit antimicrobial activity against one or more bacteria classified as Gram-negative bacteria and one or more bacteria classified as Gram-positive bacteria.
- the gram-negative bacteria exhibiting antibacterial properties of the antimicrobial copolymer are Proteus mirabilis or Escherichia coli, and the gram-positive bacteria are Enterococcus faecalis or Staphylococcus aureus), but is not limited thereto. More preferably, the antimicrobial copolymer can exhibit antibacterial activity against both Gram-positive bacteria and Gram-negative bacteria.
- the meaning that the antimicrobial copolymer exhibits antimicrobial properties means that the antimicrobial copolymer is coated on a substrate and then dried, that is, the coating layer formed by removing the solvent from the coating composition exhibits antimicrobial properties, which will be described later. It can be confirmed that the bacterial growth inhibition rate measured in the antibacterial property evaluation using the absorbance to be 60% or more.
- Proteus mirabilis is a Gram-negative bacillus, facultative anaerobic or aerobic bacterium, which is distributed in various environments and can cause urinary system-related diseases by infecting the respiratory tract or skin of humans and animals .
- Proteus mirabilis it is known that when a person is infected with the Proteus mirabilis, it causes urinary tract infection or acute pyelonephritis.
- the antimicrobial activity of the antimicrobial copolymer against bacteria is evaluated according to JIS Z 2801 (measurement of antibacterial activity on plastic and non-porous surfaces) or ASTM E2149 (Determining the Antimicrobial Activity of Immobilized Antimicrobial Agents Under Dynamic Contact Conditions) can do.
- the bacteriostatic reduction rate of bacteria measured according to JIS Z 2801 of the antimicrobial copolymer is 75% or more, 80% or more, 83.3% or more, 90% or more, 92.7% or more, 95% or more, 96% or more, It may be 97% or more, 98% or more, 99% or more, or 99.9% or more and 100% or less.
- the copolymer may be prepared by copolymerization of the monomer compound represented by Chemical Formula 1' and a monomer having at least one ethylenically unsaturated group.
- the copolymerization may be performed in the presence of a polymerization initiator.
- a polymerization initiator may be appropriately selected depending on the polymerization method, and a thermal polymerization initiator is used when a thermal polymerization method is used, a photopolymerization initiator is used when a photopolymerization method is used, and a hybrid polymerization method (both heat and light) is used. When using), both a thermal polymerization initiator and a photopolymerization initiator may be used.
- a thermal polymerization initiator may be additionally used.
- any compound capable of forming radicals by light such as ultraviolet light may be used without limitation in its composition.
- photopolymerization initiator examples include benzoin ether, dialkyl acetophenone, hydroxyl alkylketone, phenyl glyoxylate, and benzyl dimethyl ketal. Ketal), acyl phosphine, and alpha-aminoketone ( ⁇ -aminoketone) may be used at least one selected from the group consisting of.
- specific examples of acylphosphine include diphenyl (2,4,6-trimethylbenzoyl) phosphine oxide, phenylbis (2,4,6-trimethylbenzoyl) phosphine oxide, ethyl (2,4,6- Trimethylbenzoyl) phenylphosphinate etc. are mentioned. More various photoinitiators are well described in "UV Coatings: Basics, Recent Developments and New Application (Elsevier 2007)" p115, a book by Reinhold Schwalm, and are not limited to the above examples.
- the photopolymerization initiator may be included in an amount of 0.001 to 1 part by weight based on 100 parts by weight of the total amount of the monomers.
- the content of the photopolymerization initiator is less than 0.001 parts by weight, the polymerization rate may be slowed down, and when the content of the photopolymerization initiator exceeds 1 part by weight, the molecular weight of the polymer may be small and physical properties may become non-uniform.
- the photopolymerization initiator is included in an amount of 0.005 parts by weight or more, or 0.01 parts by weight or more, or 0.1 parts by weight or more, and 0.5 parts by weight or less, or 0.3 parts by weight or less, based on 100 parts by weight of the total sum of the monomers.
- thermal polymerization initiator when used as the polymerization initiator, at least one selected from the group consisting of a persulfate-based initiator, an azo-based initiator, hydrogen peroxide, and ascorbic acid may be used as the thermal polymerization initiator.
- examples of the persulfate-based initiator include sodium persulfate (Na 2 S 2 O 8 ), potassium persulfate (K 2 S 2 O 8 ), and ammonium persulfate ((NH 4 ) 2 S 2 O 8 ) and the like
- examples of the azo-based initiator include azobisisobutylonitrile, 2-azobis-(2-amidinopropane) dihydrochloride (2, 2-azobis (2-amidinopropane ) dihydrochloride), 2,2-azobis- (N, N-dimethylene) isobutyramidine dihydrochloride (2,2-azobis- (N, N-dimethylene) isobutyramidine dihydrochloride), 2- (carbamoyl azo ) Isobutyronitrile (2- (carbamoylazo) isobutylonitril), 2, 2-azobis [2- (2-imidazolin-2-yl) propane] dihydrochloride (2,2-azobis [[2-
- the thermal polymerization initiator may be included in an amount of 0.001 to 3 parts by weight based on 100 parts by weight of the total amount of the monomers. If the content of the thermal polymerization initiator is less than 0.001 part by weight, additional thermal polymerization hardly occurs, and the effect of adding the thermal polymerization initiator may be insignificant. If the content of the thermal polymerization initiator exceeds 3 parts by weight, the molecular weight of the polymer is small and the physical properties may become inhomogeneous.
- the thermal polymerization initiator is 0.005 parts by weight or more, or 0.01 parts by weight or more, or 0.1 parts by weight or more, and 3 parts by weight or less, 2.5 parts by weight or less, or 2.3 parts by weight or less based on 100 parts by weight of the total sum of the monomers. can be included in the amount of
- the monomers and polymerization initiator may be prepared in the form of a solution dissolved in a solvent.
- the solvent that can be used at this time can be used without limitation in composition as long as it can dissolve the above-mentioned components, and for example, water, ethanol, ethylene glycol, diethylene glycol, triethylene glycol, 1,4-butanediol, Propylene glycol, ethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monomethyl ether acetate, methyl ethyl ketone, acetone, methyl amyl ketone, cyclohexanone, cyclopentanone, diethylene glycol monomethyl ether, diethylene glycol At least one selected from ethyl ether, toluene, xylene, butyrolactone, carbitol, methyl cellosolve acetate, and N, N-dimethylacetamide may be used in combination.
- copolymerization between such monomers can be carried out without any particular limitation as long as it is a commonly known method.
- the copolymerization may be performed at a temperature of 60 to 100 ° C. or 70 to 90 ° C. for 1 hour to 24 hours, and when the reaction is completed, the prepared polymer is extracted and dried to finally obtain the desired copolymer.
- an antimicrobial article comprising the antimicrobial copolymer described above is provided.
- the antibacterial article is not limited in its kind, such as various household chemical products, medical supplies, automobile parts, and building materials requiring antibacterial properties. More specifically, the antibacterial article may be at least one selected from materials for freshness, fabric products, agricultural films, various office supplies, various packaging materials, and medical supplies.
- packaging materials such as food packaging materials, vegetable packaging materials, grain packaging materials, fruit packaging materials, meat packaging materials, aquatic product packaging materials, processed food packaging materials, vegetables, grains, fruits, meat, aquatic products, processed foods, etc. materials for maintaining freshness, such as containers of; tray mats for food; Table mats, table cloths, carpets. fabric products such as seat covers and the like for seats; agricultural film; Mask; office supplies such as tapes, adhesive tapes, masking tapes, and masking films; various packaging materials such as flower packaging materials, plastic bags, easy open packaging bags, shopping bags, standing bags, transparent packaging boxes, automatic packaging films, electronic parts packaging materials, and mechanical parts packaging materials; It may be a medical product such as a medical film, medical tape, or cell culture pack.
- the antimicrobial monomer 1-2' was prepared using the same method as in Preparation Example A, except that bromododecane was used instead of bromohexane (15 g , yield: 75%).
- the prepared copolymer 1 was a copolymer composed of the above-described repeating units, and the weight average molecular weight of the copolymer was 25,636 g/mol, n was 36 and m was 120. At this time, the weight average molecular weight of copolymer 1 was measured using GPC (Agilent 1200 series GPC) and was measured by dissolving the polymer in DMF.
- GPC Garent 1200 series GPC
- Copolymer 2 was prepared in the same manner as in Example 1, except that 0.5 equivalent of the antimicrobial monomer 1-2' was used instead of 0.3 equivalent in Example 1.
- the weight average molecular weight of the prepared copolymer 2 was 31,246 g/mol, n was 54 and m was 108.
- Copolymer 3 was prepared in the same manner as in Example 1, except that 0.7 equivalent of methyl methacrylate was used instead of 1 equivalent in Example 1.
- the weight average molecular weight of the prepared copolymer 3 was 29,376 g/mol, n was 48 and m was 112.
- the weight average molecular weight of the prepared homopolymer PMMA was 19,423 g/mol, and the number of repeating units derived from methyl methacrylate was 194.
- Copolymer 4 was prepared in the same manner as in Example 1, except that 0.029 equivalent of the antimicrobial monomer 1-2' was used instead of 0.3 equivalent, and 0.971 equivalent of methyl methacrylate was used instead of 1 equivalent in Example 1. manufactured.
- the weight average molecular weight of the prepared copolymer 4 was 41,368 g/mol, n was 58 and m was 1942.
- Copolymer 5 was prepared in the same manner as in Example 1, except that 0.7 equivalent of the antimicrobial monomer 1-2' was used instead of 0.3 equivalent, and 0.3 equivalent of methyl methacrylate was used instead of 1 equivalent in Example 1. manufactured.
- the weight average molecular weight of the prepared copolymer 4 was 35,389 g/mol, n was 84 and m was 36.
- a bacterial solution of 2.5 -10 ⁇ 10 5 CFU / mL was prepared by isolating strains cultured for 24 hours in a constant temperature and humidity chamber at 37 ° C and diluting with sterilized tryptic soy broth.
- the copolymer prepared in Examples and Comparative Examples was dissolved in dimethyl sulfoxide (DMSO) at 5% to 20% and operated at 1200 rpm for 2 minutes using a spin coater to prepare a film having a size of 5 X 5 cm. This was cut into squares with a size of 5 cm ⁇ 5 cm, and this was used as a specimen. The surface of the specimen was washed with 70% ethanol and sterilized with ultraviolet light for 30 minutes.
- DMSO dimethyl sulfoxide
- the sterilized specimen was placed on a petri dish, and 0.4 mL (2.5 -10 ⁇ 10 5 CFU/mL) of the bacterial solution was inoculated on the surface of the specimen, and then covered with a 4 cm ⁇ 4 cm LDPE film to ensure complete adhesion.
- the bacteria-coated specimens were incubated for 24 hours in a constant temperature and humidity chamber at 37 ° C, and then washed by putting the film and 10 mL of tryptic soy broth nutrient medium together in a stalker bag.
- A is the average number of viable cells immediately after inoculation of the specimen prepared using Comparative Example 1,
- C is the average value of the number of viable cells after 24 hours of culturing of specimens prepared using Examples and Comparative Examples.
- the bacteria were recovered and cultured in a medium, and then the bacteriostatic reduction rate was calculated by comparing the CFU (colony forming unit) with the control.
- the preparation method of the medium and test group required for the antibacterial test and the detailed method of the antibacterial test are as follows.
- NB broth In the case of a solid medium, 8 g of NB broth, 25 g of agar powder, and 1 L of distilled water were put into a 2 L container and dissolved by stirring or heating with a spoon. Since the agar powder on the wall does not melt even at high temperatures during the sterilization process, shake it and do not dissolve it. And sterilized under the same conditions as the liquid medium. Since the NB broth hardens at 40 ° C., when the temperature is lowered to 60 ° C. after sterilization, 25 mL of the solution is poured into a petri dish with a diameter of 90 mm and solidified.
- a part of the strain in the small intestine was transplanted into 10 mL of a liquid medium, and cultured in suspension at (37 ⁇ 1) ° C for 18 to 24 hours using a shaking incubator.
- the bacteria cultured in the liquid phase were centrifuged at 2000 rpm for 3 minutes to separate only the bacteria from the medium, and then diluted with 1X PBS so that the OD value (optical density) was 1 at a wavelength of 600 nm.
- the prepared sample was cultured in suspension at (37 ⁇ 1)°C for 18 to 24 hours using a shaking incubator.
- the solid medium was cultured at (37 ⁇ 1) ° C for 24 to 48 hours.
- the bacteriostatic reduction rate (%) was calculated by calculating the percentage reduction in the number of CFUs of the sample compared to the control group according to Equation 2 below, and the average value obtained after three repeated tests was obtained.
- Bacteriostatic reduction rate (%) [1- (number of bacteria in test group / number of bacteria in control group)] x 100
- the number of bacteria in the test group is the number of antimicrobial test bacteria in the copolymers of each Example and Comparative Example.
- the number of bacteria in the control group is the number of bacteria after the antibacterial test in the copolymer of Comparative Example 1.
- the copolymers of Examples are the copolymers of Comparative Example 1 not containing the first repeating unit represented by Formula 1 and Comparative Examples in which the content of the first repeating unit represented by Formula 1 is too low.
- Proteus Mirabilis, Escherichia coli (E.coli), Enterococcus faecalis (E.faecalis), and Staphylococcus aureus (S.aureus, ATCC 15923) are all significantly improved antibacterial It can be seen that the characteristic
- copolymer 5 of Comparative Example 3 having an excessively high content of the first repeating unit represented by Formula 1
- the surface of the specimen was deformed to white and became sticky This occurred, and swelling and stickiness occurred because the polymer surface was dissolved in water even according to ASTM E2149. Therefore, the copolymer 5 of Comparative Example 3 has poor durability and chemical resistance, so it can be said that its applicability to articles is very low, since deterioration in physical properties is expected during use.
- the copolymers of Examples did not undergo deformation and stickiness caused by bacteria, and thus had excellent durability and chemical resistance.
- the antimicrobial copolymer of Example including the first repeating unit represented by Chemical Formula 1 in a specific range exhibits improved antibacterial properties against Gram-negative bacteria and Gram-positive bacteria while having excellent chemical resistance.
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Abstract
Description
| 중합체 종류 |
제1 반복단위 대 제2 반복단위의 몰 비 |
정균 감소율 (%) | 내화학성 테스트 |
|||||
| Proteus Mirabilis |
E.coli | E.faecalis | S.aureus | JIS Z 2801 | ASTM E2149 | |||
| 실시예 1 |
공중합체 1 |
23.1:76.9 (0.3:1) |
99.9 | 99.9 | 83.3 | 92.7 | ○ | ○ |
| 실시예 2 |
공중합체 2 |
33.3:66.7 (0.5:1) |
99.9 | 99.9 | 99.9 | 99.9 | ○ | ○ |
| 실시예 3 |
공중합체 3 |
30:70 | 99.9 | 99.9 | 99.9 | 99.9 | ○ | ○ |
| 비교예 1 |
PMMA | 0:100 | 0 | 0 | 0 | 0 | ○ | ○ |
| 비교예 2 |
공중합체 4 |
2.9:97.1 | 71.3 | 74.5 | 53.2 | 67.1 | ○ | ○ |
| 비교예 3 |
공중합체 5 |
70:30 | 99.9 | 99.9 | 99.9 | 99.9 | X | X |
Claims (14)
- 제1항에 있어서,상기 화학식 1에서,L은 메틸렌, 에틸렌, 또는 프로필렌인,항균성 공중합체.
- 제1항에 있어서,상기 화학식 1에서,R4 내지 R6 중 하나는 탄소수 5 내지 20의 알킬이고, 나머지는 각각 독립적으로 메틸 또는 에틸인,항균성 공중합체.
- 제1항에 있어서,상기 화학식 1에서,R1은 메틸이고,R2 및 R3는 수소이고,R4 내지 R6 중 하나는 탄소수 6 내지 16의 알킬이고, 나머지는 각각 독립적으로 메틸 또는 에틸인,항균성 공중합체.
- 제1항에 있어서,상기 하나 이상의 에틸렌성 불포화기를 갖는 단량체는 알킬 (메트)아크릴레이트계 단량체, 할로겐화 비닐 단량체, 비닐 알킬레이트계 단량체, 알케닐 시안화물 단량체 및 방향족 비닐계 단량체로 구성되는 군으로부터 선택되는 1종 이상인,항균성 공중합체.
- 제7항에 있어서,상기 하나 이상의 에틸렌성 불포화기를 갖는 단량체는 메틸 (메트)아크릴레이트, 비닐 클로라이드, 비닐 아세테이트, 아크릴로니트릴, 또는 스티렌인,항균성 공중합체.
- 제1항에 있어서,상기 항균성 공중합체는 중량평균분자량이 10,000 내지 1,000,000 g/mol인,항균성 공중합체.
- 제1항에 있어서,상기 항균성 공중합체는 그람양성균(Gram-positive bacteria) 및 그람음성균(Gram-negative bacteria) 중 적어도 하나에 대해 항균성을 나타내는,항균성 공중합체.
- 제10항에 있어서,상기 그람 음성균은 프로테우스 미라빌리스(Proteus mirabilis), 또는 대장균(Escherichia coli)이고,상기 그람 양성균은 엔터코쿠스 페칼리스(Enterococcus faecalis), 또는 황색포도상구균(Staphylococcus aureus)인,항균성 공중합체.
- 제10항에 있어서,상기 항균성 공중합체는 그람양성균(Gram-positive bacteria) 및 그람음성균(Gram-negative bacteria) 모두에 대해 항균성을 나타내는,항균성 공중합체.
- 제1항 내지 제12항 중 어느 한 항에 따른 항균성 공중합체를 포함하는,항균성 물품.
- 제13항에 있어서,상기 항균성 물품은 선도 유지용 재료, 패브릭 제품, 농업용 필름, 각종 사무 용품, 각종 포장 재료 및 의료 용품 중에서 선택되는 1종 이상인,항균성 물품.
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| EP22842324.0A EP4339215A4 (en) | 2021-07-16 | 2022-06-27 | ANTIBACTERIAL COPOLYMER |
| US18/576,260 US20240247089A1 (en) | 2021-07-16 | 2022-06-27 | Antibacterial Copolymer |
| JP2023579601A JP2024523571A (ja) | 2021-07-16 | 2022-06-27 | 抗菌性共重合体 |
| CN202280045673.1A CN117616060A (zh) | 2021-07-16 | 2022-06-27 | 抗菌共聚物 |
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| KR102837118B1 (ko) * | 2023-06-26 | 2025-07-22 | 주식회사 엘지화학 | 항균 수지 및 이를 포함하는 성형체 |
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| KR100601393B1 (ko) | 2004-04-06 | 2006-07-14 | 한국식품연구원 | 항균 기능성 플라스틱 복합필름 구조물 및 그 제조방법 |
| WO2008082293A1 (en) * | 2006-12-29 | 2008-07-10 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Substrate with antimicrobial coating |
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| US5235015A (en) * | 1991-02-21 | 1993-08-10 | Minnesota Mining And Manufacturing Company | High speed aqueous solvent developable photopolymer compositions |
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| US8513322B2 (en) * | 2007-05-31 | 2013-08-20 | 3M Innovative Properties Company | Polymeric beads and methods of making polymeric beads |
| CN105145566A (zh) * | 2015-07-18 | 2015-12-16 | 广州大学 | 一种季铵盐抗菌剂和结构型抗菌树脂 |
| JP2017202982A (ja) * | 2016-05-09 | 2017-11-16 | ライオン株式会社 | 抗菌性ポリマー |
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| KR100601393B1 (ko) | 2004-04-06 | 2006-07-14 | 한국식품연구원 | 항균 기능성 플라스틱 복합필름 구조물 및 그 제조방법 |
| WO2008082293A1 (en) * | 2006-12-29 | 2008-07-10 | Nederlandse Organisatie Voor Toegepast-Natuurwetenschappelijk Onderzoek Tno | Substrate with antimicrobial coating |
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| EP4339215A4 (en) | 2024-07-10 |
| CN117616060A (zh) | 2024-02-27 |
| JP2024523571A (ja) | 2024-06-28 |
| US20240247089A1 (en) | 2024-07-25 |
| KR20230012889A (ko) | 2023-01-26 |
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