28 results about "Antimicrobial polymer" patented technology

An antibacterial polymer having a molecular weight above a certain level, which is highly miscible with other polymers compared to a monomolecular type antibacterial agent and can be added during the melt extrusion process. Further the antibacterial polymer has the advantage of exhibiting excellent antibacterial properties against Gram-negative bacteria and does not elute over time.

The present application discloses an antimicrobial nylon material, along with its preparation method and application. The present application relates to the technical field of antimicrobial polymer materials and addresses the limitations of existing antimicrobial nylon 6, particularly its insufficient antimicrobial efficacy and challenges in scalability for industrial production. In the present application, a seven-membered cyclic lysine-derived monomer is copolymerized with a lactam via hydrolytic copolymerization using water as an initiator, yielding a copolyamide. The resulting copolyamide is then subjected to a protonation reaction through heating and stirring in an acidic solution, followed by purification to obtain the final antimicrobial nylon material. The seven-membered cyclic lysine-derived monomer may be an unprotected cyclic lysine monomer, a mono-protected cyclic lysine monomer, or a salt form cyclic lysine monomer. The present invention exhibits broad applicability in antimicrobial-sensitive fields such as textiles, plates, pipes, packages or panels.

The present invention relates to the field of polymer materials. Disclosed are an isobutylene-based cationic salt ionic polymer, a preparation method therefor, and the use thereof. The polymer comprises a structure represented by formula (2) and / or formula (3), and optionally, a structural unit A represented by formula (1), a structural unit B represented by formula (4) and a structural unit C represented by formula (5), Q being formula (6), formula (7), formula (8) or formula (9). The side group and the main chain of the polymer both contain cationic salt groups, so that the polymer has a high polyionic degree and thus can be used as an antibacterial agent for preparing antibacterial polymer materials, such as antibacterial plastics, antibacterial rubber, antibacterial fibers and antibacterial coatings.

Disclosed herein are PEG-maximin H5 peptide conjugates and methods for using the same in the treatment or prevention of biofilms and biofouling.

The present invention provides an antibacterial structure comprising: a polymeric support layer carrying an antibacterial component; and an antibacterial polymeric layer applied onto the support layer. The antibacterial structure according to the present invention exhibits an excellent antibacterial effect, shows a contact angle of 150° or higher with a solvent even if the antibacterial component is carried, and has antifouling properties.

The application provides a guanidine-containing antibacterial polymer, a preparation method and application thereof, and has the structure shown in the following formula I. When a nanofiber membrane prepared from the guanidine-containing antibacterial polymer is used to filter PM in air, the nanofiber membrane has good filtering effect, and has good bacteriostatic effect on staphylococcus aureus and escherichia coli, and even has better bacteriostatic effect when stored for a long time.

The present application relates to a kind of odorless antibacterial polymer-based composite and its preparation method.The odorless antibacterial polymer-based composite includes the following components, by weight parts:20~30 parts modified waterborne epoxy resin, 5~20 parts waterborne epoxy resin curing agent, 5~10 parts dispersing agent, 5~10 parts defoaming agent, 5~10 parts leveling agent, 5~10 parts film forming aid, 5~10 parts modified glass fiber, 20~30 parts filler, 5~10 parts antibacterial agent, 3~8 parts antioxidant, 20~30 parts water.The present application has excellent performance, such as good adhesion, corrosion resistance, good mechanical properties, good antibacterial property, good weather resistance, water resistance, etc.Because modified four acicular zinc oxide whisker is compounded with zinc ethylene bisdithiocarbamate, the problem of poor compatibility with odorless antibacterial polymer-based composite when modified four acicular zinc oxide is added alone is also changed, and the surface hardness is also increased, thereby increasing the service life.

The invention "Manufacturing an antibacterial nanocomposite coating based on water-based polyurethane / double hydroxide layer reinforced with an antimicrobial copolymer with the ability to prevent bacterial growth" relates to the field of the medical industry, coatings and coverings; and also relates to the field of medical equipment for the production of antibacterial polymer nanocomposites that inhibit bacterial growth. This nanocomposite coating consists of three different layers with antibacterial properties, each layer performing a different function in destroying bacteria. The first layer uses water-based polyurethane modified with chitosan and polyvinyl alcohol; the second layer uses layered double hydroxide modified with the antibacterial agent cetyltrimethylammonium bromide (cetolone); and finally, the third layer uses an antimicrobial polypropylene-ethylene copolymer (PP-R), which are mixed together to form an antibacterial nanocomposite coating.

This invention relates to the field of medical polymer materials technology, specifically disclosing an antibacterial and antifouling medical coating material and its preparation method. The medical coating material comprises raw materials: a hydrophilic monomer, a fluorinated low surface energy monomer, an antibacterial polymer, a crosslinking agent, a photoinitiator, and a mixed solvent. The antibacterial polymer is obtained by reacting ε-polylysine sequentially with glycidyl methacrylate, 1-bromododecane, and hyaluronic acid oligomers. This invention utilizes in-situ copolymerization cured by ultraviolet light to covalently integrate the functional components into a chemically crosslinked polymer network. The resulting coating surface is highly hydrophilic, effectively resisting non-specific adhesion of proteins and bacteria. It also exhibits specific enzyme responsiveness, displaying low activity and high biocompatibility under normal physiological conditions, but being activated in a microenvironment rich in hyaluronidase caused by bacterial infection, demonstrating a highly efficient bactericidal ability exceeding 99.5% against Staphylococcus aureus and Escherichia coli.

The invention discloses a hydrophilic antifogging film which comprises a base material layer and a hydrophilic antifogging layer which are stacked, and the hydrophilic antifogging layer is formed by coating the surface of the base material layer with hydrophilic antifogging coating liquid and carrying out thermocuring. The hydrophilic antifogging coating liquid comprises 1-6 parts of an antibacterial polymer, 7-17 parts of polyvinyl alcohol, 1-3 parts of a silane coupling agent, 0.05-0.2 part of a cross-linking agent, 0.02-0.1 part of a curing agent, 1-4 parts of an auxiliary agent and 80-90 parts of deionized water; the antibacterial polymer is obtained by carrying out protonation reaction on a prepolymer obtained by reacting dimethylaminoethyl methacrylate and acrylic acid and 1-bromo-n-alkane; and the carbon chain length of alkane in the 1-bromo-n-alkane is 7-12. The antibacterial polymer and the polyvinyl alcohol are compounded, so that the hydrophilic anti-fog layer is endowed with good antibacterial property, antifouling property and wear resistance; the crosslinking agent and the curing agent are combined, so that the polymerization crosslinking density of the hydrophilic anti-fog layer is improved, and the durability, the wear resistance and the adhesive force of the anti-fog function are further improved.

The present disclosure relates to an antibacterial polymer composition, and more particularly, to an antibacterial polymer composition that enables the preparation of a coating layer exhibiting excellent antibacterial properties.

The present invention relates to an antibacterial polymer composition containing a polymer compound in which a cationic monomer and a fluorine-based acrylic monomer are graft-polymerized in a fluorine-based copolymer. A fluorine-based polymer composition according to the present specification exhibits an antibacterial effect of 99.9% or more, exhibits a contact angle of 150 degrees or greater with respect to a solvent, and thus can be applied to a coating agent exhibiting high air permeability, contamination resistance, and antibacterial effect.

The invention relates to the technical field of ornamental flower seeds, in particular to an antifungal biological coating agent for ornamental flower seeds and a preparation method thereof.The antifungal biological coating agent for ornamental flower seeds is prepared from, by weight, 1.5-3 g of polymer film-forming agent, 0.7-1.5 g of antibacterial polymer powder, 0.1-0.3 g of composite antifungal agent and the balance water, 2-5 g of an auxiliary agent, 90-95 g of an inorganic mineral filler and 0.5-1.5 g of a binder. The coating agent provided by the invention can realize multiple functions of disease prevention, growth promotion and water retention through one-time coating, reduces the labor and material cost of subsequent topdressing and pesticide spraying, and has a good application prospect.

The present application relates to the technical field of polymer preparation, in particular to an antibacterial polymer nanocomposite material and a preparation method thereof.The material takes polyhydroxybutyrate and polybutylene adipate terephthalate as a matrix, fuses a non-metallic organic framework antibacterial agent, a non-peptide antibacterial mimic and a photothermal response nanomaterial, wherein the non-metallic organic framework antibacterial agent and the non-peptide mimic synergistically play a chemical sterilization role, and the photothermal response nanomaterial improves the sterilization efficiency through physical thermal effect, so that the material provided by the present application can realize broad-spectrum, efficient and persistent antibacterial effect through the organic combination of multiple antibacterial mechanisms.The material provides a high-efficiency antibacterial solution of multiple mechanism synergy in view of the defects of single antibacterial mechanism and non-persistent effect of traditional materials, and is suitable for medical and packaging fields, and has significant economic value and application prospect.

The present invention relates to an antibacterial composition comprising a cationic polymer and at least one anionic surfactant.

The invention discloses a polymer antibacterial structure and a preparation method thereof, the antibacterial polymer structure is characterized in that a nano-structure layer is prepared on the surface of a polymer, and the nano-structure layer is formed by mixing nano-cylinders and nano-cones according to the quantity ratio of 1: 2 and covers the whole surface of the polymer. The antibacterial polymer structure and the preparation method provided by the invention have obvious antibacterial effects on gram-negative bacteria and gram-positive bacteria. The antibacterial polymer can be widely applied to places where the surfaces are difficult to touch, are easy to clean and disinfect, but have inhibition requirements on bacterial proliferation, such as hospital operating rooms, automobile ventilating ducts and residence fresh air systems.

The present invention relates to an antimicrobial polymer coating composition comprising: a urethane acrylate-based oligomer or polymer having a molar ratio of a urethane functional group to a (meth)acrylate-based functional group of 1 to 10; a photosensitizer; and a photoinitiator; an antimicrobial polymer film comprising a cured product of the antimicrobial polymer coating composition; and an antimicrobial polymer film comprising a predetermined urethane acrylate-based polymer resin; and a photosensitizer dispersed in the polymer resin, wherein the polymer film has oxygen permeability of 5 to 100 cc / m2 day.

1. A mouthpiece (23) for an aerosol generation system (10), comprising an antimicrobial polymeric material, the antimicrobial polymeric material comprising a thermoplastic polymer and an antimicrobial agent comprising one or both of a zinc antimicrobial agent and a silver antimicrobial agent. 2. A cartridge (20) for an aerosol generation system (10), comprising: a mouthpiece (23), a storage compartment (24) containing a liquid aerosol-generating substrate (26), and a fluid-permeable aerosol-generating element (28) in communication with the storage compartment (24), the fluid-permeable aerosol-generating element (28) configured to vaporize the liquid aerosol-generating substrate (26) to generate an aerosol. 3. An aerosol generation system (10), comprising: the cartridge (20) and a device portion (40) including a power source and control electronics.

The application belongs to the technical field of textile functional finishing, and discloses an antibacterial finishing agent for superfiber suede fabric, a preparation method and application. The antibacterial finishing agent comprises an antibacterial polymer, a dispersion medium and a textile penetrating agent. The preparation method of the antibacterial polymer is as follows: tetramethyldipropylene triamine and (3-glycerol triester oxypropyl) trimethoxysilane are reacted in a solvent, then alpha, alpha'-dichloroxylene is added for reaction, and the obtained polymer is purified and pre-hydrolyzed to obtain the antibacterial polymer. Due to the strong anchoring between the siloxane crosslinking network and the fibers, the finished suede shows excellent washing resistance and friction resistance. Experiments show that the antibacterial rate of the common pathogenic bacteria still remains above 99% after 50 times of washing. The antibacterial finishing agent constructs a functional network in the fiber gap instead of forming a film on the surface, so that the unique soft hand feeling, fullness of the suede surface and matte color of the suede are completely retained.

The application provides an antibacterial polymer selectively removing gram-negative bacteria and a preparation method and application thereof, and solves the problem that the existing antibacterial polymer with multiple advantages still cannot effectively remove gram-negative bacteria in a specific manner. m HF n The chemical formula of the antibacterial polymer is PD m HF n , an amine-containing monomer 2-(dimethylamino)ethyl methacrylate (DMAEMA) is used as a cation block unit, and a fluorine-containing monomer 2,2,3,3,4,4,4-heptafluorobutyl methacrylate (HFBMA) is used as a hydrophobic group block unit, wherein the ratio of n to m represents the molar ratio of the monomers HFBMA and DMAEMA, and 0.1≤n / m≤0.2.

Nanomaterials are an important class of materials for sunscreens. Conventional metal oxide nanoparticles are toxic in nature and leave white patches on skin after application. This disclosure provides a sunscreen composition containing biodegradable antimicrobial polymer nanoparticles as UV filter. The sunscreen composition comprising chitosan nanoparticles, at least one flavoring agent, at least one coloring agent, at least one stabilizer, and at least one preservative, in a defined form, wherein size of the chitosan nanoparticles is ranging from 200 to 900 nm. The size of the chitosan nanoparticles ranging from 200 to 400 nm for air medium, 500 to 700 nm for water medium and 700 to 900 nm for ethanol medium. The chitosan polymer is derived from chitin, a glucosamine polymer. The sunscreen composition is available in the defined form selected from a group consisting of a skin cream, a skin lotion, a powder, a gel, and a sprayable liquid.

The invention provides a self-crosslinking antibacterial polymer as well as a preparation method and application thereof, and the preparation method comprises the following steps: under a stirring condition, dropwise adding (3-triglyceride oxypropyl) trimethoxysilane into a tetramethyl dipropylene triamine solution; after the reaction is finished, slowly dropwise adding a solution of alpha, alpha '-dichloroxylene into the reaction system, and continuing the reaction; and after the reaction is finished, precipitating the obtained mixture by using a precipitation solution, and then carrying out centrifugal treatment to obtain the target antibacterial polymer. Dispersing the polymer in an electrostatic spinning polymer solution for electrospinning to obtain an antibacterial fiber membrane; the polymer fiber membrane is placed in hot steam for crosslinking, and the self-crosslinking antibacterial fiber membrane is obtained. The synthetic route is simple, and the obtained polymer and the polymer fiber membrane have efficient and lasting antibacterial performance and have wide application prospects in the field of medical treatment and public health.

The invention relates to sterile veterinary formulations for treating or preventing mastitis in cattle. The formulations comprise a suspension of Derivatised Microparticles, optionally in combination with Microparticles, in an amount of 5 percent to 60% w / v. The Derivatised Microparticles and Microparticles are biodegradable and are formed from an organic polycationic polymer and a saturated or unsaturated fatty dicarboxylic acid. Suitable polymers may include organic polymeric amines, quaternary ammonium compounds, polypeptides and carbohydrates, with preferred antimicrobial polymers such as nisin, ε‑polylysine or chitosan. In preferred embodiments, the microparticles are formed from sebacic acid and ε‑polylysine and the fatty dicarboxylic acid to polymer molar ratio is around 1:1. The suspension may comprise 20 % to 50 % microparticles, preferably around 30 %, in a veterinary acceptable carrier such as water, mineral oil, liquid paraffin or white soft paraffin. The microparticles may be present as a mixture, with the ratio of Derivatised Microparticles to Microparticles ranging from 90:10 to 10:90. The formulation may be administered during the dry period of the cow and provides an effective method for treating or preventing mastitis. The invention further includes mixtures of Derivatised Microparticles and Microparticles and veterinary formulations containing such mixtures.

The application discloses a citronellol-based antibacterial polymer and a preparation method and application thereof. First, a citronellol-based initiator is synthesized through esterification reaction of citronellol and an acyl halide, and then DMAEMA and HEMA are polymerized through ATRP to obtain the citronellol-based antibacterial polymer; and then the citronellol-based antibacterial polymer is connected to cotton through a covalent bond by using diisocyanate to obtain a washing-resistant antibacterial cotton fabric, which has greater application value in the field of medical cotton fabrics. The citronellol-based antibacterial polymer prepared by modifying citronellol and combining with the polymer has obviously enhanced antibacterial effect and is firmly grafted to the cotton, and is expected to be used in industrial production.