9361 results about "Antibacterial property" patented technology

A luer fitting is disclosed. The luer fitting includes a body having a first end and a second end, wherein the first end comprises an antibacterial component disposed therewith. The luer fitting is connected over a catheter that has been primed with a locking solution. The antibacterial component is fluidly engaged with the locking solution such that the antibacterial component diffuses through the locking solution. A method of reducing antibacterial activity in a catheter utilizing the fitting is also disclosed.

An anti-fingerprint coating construction (23) for application to a surface of a substrate (21) includes a layer formed of a material selected from the group consisting of a hydrophobic nano-composite material, an oleophobic nano-composite material, and a super-amphiphobic nano-composite material. When the anti-fingerprint coating construction is employed on a metal surface or a nonmetal surface, sweat or/and grease on fingers of a user is not liable to be adhered to the surface. Therefore a fingerprint of the user is prevented from being imprinted on the surface, and the surface can remain clean and aesthetically pleasing. Because the anti-fingerprint coating construction is easy to clean, the anti-fingerprint coating construction has good anti-corrosion and antibacterial properties. The anti-fingerprint coating construction contains no chromium, and therefore does not need to be processed by an acid or alkali solution. This makes the anti-fingerprint coating construction environmentally friendly.

The flexible, reusable packaging container of the present invention is comprised of a packaging material. The packaging material is comprised of one or more layers of coating disposed on one or more layers of textile substrate. The coating layer may be comprised of a stiffening agent for providing support to the packaging container. The stiffening agent may provide a gas and/or liquid impermeable barrier between the contents of the container and the textile substrate. The stiffening agent may also include chemicals which impart antifungal or antibacterial properties to container. The textile substrate typically provides an aesthetically pleasing feel and appearance to the outside of the packaging container, as well as providing functional attributes such as water repellence, stain resistance, and/or anti-static resistance. The resulting packaging container possesses increased strength, puncture resistance, and resistance to de-lamination over the current paper or plastic packaging containers.

The invention discloses a nano silver bacterial fibre preparation method comprising: adding fibre into AgNO3 solution, and adsorbing the mixture; and carrying out reduction reaction on the adsorbed fibre to obtain the nano silver bacterial fibre. The invention has simple production step, and the obtained product has the advantages of even silver nanoparticle distribution and long-lasting fibre antibacterial property and can be washed several times. The invention is suitable for natural fibre and synthetic fibre and can be used for health-care underwear, medicinal gauze, clothes, decorative textiles and the like.

The invention relates to a graphene blend regenerated cellulose fiber. The graphene blend regenerated cellulose fiber is prepared by mixing an oxidized graphene solution and a regenerated cellulose solution, molding a mixture through a viscose wet spinning process and reducing the mixture; the dry breaking strength of the graphene blend regenerated cellulose fiber is not less than 1.8 cN/dtex, the wet breaking strength of the graphene blend regenerated cellulose fiber is not less than 0.9 cN/dtex, the dry breaking elongation of the graphene blend regenerated cellulose fiber is not less than 16%, the mass specific resistance of the fiber is 1-9X106 omega.g/cm2, and the thermal decomposition temperature of the fiber is not lower than 400 DEG C; and with the regenerated cellulose fiber as a matrix, the prepared graphene blend regenerated cellulose fiber has the advantages of good moisture absorption, good air permeability, soft handle and good dyeing performance and has the characteristics of ultrahigh strength, thermal conductivity, electric conductivity, antibacterial property and the like of the graphene; the conductive and thermal properties of the fiber are both improved by being compared with those of the traditional regenerated cellulose fiber; the antibacterial property of the fiber is additionally provided; and the graphene blend regenerated cellulose fiber provided by the invention has the advantages of simple production process, easiness in operation, and higher yield. People estimate that the developed graphene blend regenerated cellulose fiber can be widely applied to the field of costumes, industrial textiles and the like.

The invention discloses a preparation method of a hydrophilic antimicrobial film of which the surface is coated with dopamine and polyethyleneimine cations. The preparation method comprises the following steps that a base film is prepared, the base film is immersed in a dopamine solution, a polydopamine layer is formed on the surface of the base film by dopamine auto-agglutination, and the polydopamine layer and a polyethyleneimine aqueous solution undergo a reaction so that the hydrophilic antimicrobial film is prepared by the cationization reaction. The preparation method is simple and easy and has mild reaction conditions. The prepared hydrophilic antimicrobial film has excellent hydrophilicity and antibacterial properties, reduces adherence of microbes such as organic matters and bacteria, has a bacterium killing capability and prolongs a film service life.

The antibacterial polypropylene material consists of polypropylene resin 100 weight portions, stuffing 25-35 weight portions, toughening agent 5-15 weight portions, antiseptic 0.2-0.8 weight portion, dispersant 0.5-1.5 weight portions, antioxidant 0.1-0.5 weight portion and ultraviolet absorber 0.1-0.5 weight portion. The polypropylene resin is homopolypropylene, and the antiseptic is compounded with nanometer silver and organosilicon antiseptic. The present invention also provides the preparation process of the antibacterial polypropylene material with low production cost, excellent antiseptic performance.

The invention discloses a method for preparing antibacterial nanometer silver colloid, belonging to the technical field of nanometer biological materials. The method uses a chemical reduction method, comprising the following steps: dissolving water-soluble protective agent in silver nitrate water solution with the concentration of 0.001-0.1mol/L, wherein the mass ratio of protective agent to silver nitrate is 0.5-10.0:1; carrying out ice bath on sodium borohydride water solution with the concentration of 0.001-0.2mol/L for 10-30min; and dropwise adding the silver nitrate water solution containing protective agent in the sodium borohydride water solution with the speed of 30-60 drop/min, stirring by a magnetic stirrer, stirring for 20-40min after dropwise adding to prepare the nanometer silver colloid with the grain size of 5-80nm, wherein the mol ratio of the sodium borohydride to the silver nitrate is 1.0-30.0:1. The nanometer silver colloid prepared by the invention has the advantages of high concentration, high stability, high dispensability, and obviously-enhanced antibacterial property.

The invention relates to medical chitosan fiber in the textile processing field and a preparing method thereof, the method for preparing spinning fluid comprises the following steps: arranging the chitosan powder in glacial acetic acid water solution and slowly dissolving by stirring under the condition of controlling temperature and time, wherein the dissolution temperature is 10-30DEG C, the dissolution time is 10-48h, and the stirring speed is 60-180r/min, wherein the chitosan powder occupies 3%-10%, dissolvent glacial acetic acid occupies 1%-5% and the other is water in the spinning raw materials, the chitosan content is more than 99.9% in chitosan fiber, and the chitosan fiber has higher molecular weight, sufficient amido, steady fiber structure, and good antibacterial property, brute force and hygiene security property.

The invention provides an antistatic, antibacterial and graphene-reinforced composite polyester fiber, which is characterized in that the composite polyester fiber comprises a component A and a component B, wherein the component A is polyester excluding graphene, and the component B is polyester including 0.3-3.0wt% of graphene. The invention also provides a preparation method of the composite polyester fiber. The composite polyester fiber provided by the invention is low in cost, high in strength, and high in antistatic and antibacterial properties.

The invention relates to a preparation method of a functional fabric, and belongs to the technical field of textile materials. Functional nanoparticles are compounded on the surface of the fabric through the preparation of the functional nanoparticles and the preparation of the functional fabric. The existence of vinyl polysiloxane overcomes high adsorption capacity of functional nanoparticle aggregate, so that the uniformly dispersed functional nanoparticles are firmly adhered to the surface of the fabric, and the fabric has multiple functions of ultraviolet resistance, super-hydrophobicity, pollution resistance, antibacterial property, health and the like through the synergistic effect of the vinyl polysiloxane and the functional nanoparticles. According to the preparation method of the functional fabric disclosed by the invention, the vinyl polysiloxane is efficiently utilized, the productive value of the vinyl polysiloxane is improved, and the application of the vinyl polysiloxane to other fields is developed; moreover, the whole process is simple in equipment, relatively low in cost and free of pollution to ecological environment, and has a great application prospect.

A nano-class mesoporous Ag-carried antibacterial agent used for detergent, cosmetics, water treating, textile, etc contains inorganic oxide as carrier with orderly mesopore structure and Ag as active antibacterial component. Its advantages are large specific surface area, broad spectrum, high effect and durability, and no damage to people.

The invention relates to an omnidirectional antibacterial intelligent type air purifier for a vehicle, which comprises a shell, an air purification component, a fan power component, an energy component, an induction sensor component, a negative-ion generator and a display intelligent control component. The omnidirectional antibacterial intelligent type air purifier for the vehicle uses a nano silver modified titanium dioxide as a photocatalyst, thereby increasing photocatalysis effect and sterilization antibacterial performance. The omnidirectional antibacterial intelligent type air purifier for the vehicle uses an ultraviolet light emitting diode as a ultraviolet light source, thereby guaranteeing the photocatalyst to be capable of playing the role of degrading pollutants efficiently. The inner surface and the outer surface of an enclosure all have antibacterial performance, thereby guaranteeing bacteria not to live on the surface of an airframe of the omnidirectional antibacterial intelligent type air purifier for the vehicle, and guaranteeing personal safety. The omnidirectional antibacterial intelligent type air purifier for the vehicle can automatically induct air conditions, adjusts purification power in real time, and has intelligent control function.

A knitted sock has an inner layer 2 comprising a toe end 4 and an outer layer 3 comprising a toe end 7. The inner and outer toe ends are aligned and joined wale stitch to wale stitch to form a composite toe end, which is closed to provide a flat toe seam 10. The layered sock is manufactured complete in a single process being knit continuously from the inner toe end to the outer toe end. It comprises reciprocated heel and toe portions. The foot portion of the inner layer is knit from a yarn with properties such as a low coefficient of friction and/or antifungal/antibacterial properties. The low friction fiber is a fluoropolymer such as polytetrafluroethylene. The outer layer may comprise a cushion structure.

The invention relates to a microporous polyether urethane elastomer composite material and a preparation method thereof. The composite material is formed by the prepolymerization reaction of a polyhydric alcohol component A and a prepolymer component B, wherein the polyhydric alcohol component A comprises the following raw materials in the formula: 20 to 90 parts of polyoxytrimethyl-ene polyhydric alcohol, 5 to 50 parts of polyether polyol II, 5 to 50 parts of polymer polyether polyol, 2 to 30 parts of chain extender, 0.5 to 2 parts of nanometer graphene, 0.2 to 4 parts of foaming agent, 0.2 to 2 parts of foam homogenizing agent and 0.2 to 4 parts of catalyst; and the prepolymer component B comprises the following raw materials in the formula: 30 to 60 parts of diisocyanate, 4 to 20 parts of polyisocyanate modified by carbodiimide and 20 to 60 parts of polyoxytrimethyl-ene polyhydric alcohol. The polyether polyol II is formed by one or two of polyoxytrimethyl-ene epoxyethane copolyether polyol or/and polyethylene tetrahydrofuran polyol. The composite material provided by the invention is excellent in comprehensive mechanical property, antibacterial property and definite flame resistance.

The invention discloses a silk-fibroin-based antibacterial nanofiber and a preparation method thereof. The nanofiber comprises the following components in parts by weight: 40-98 parts of silk fibroin, 1-10 parts of titanium dioxide and 1-60 parts of chitosan. The preparation method comprises the following steps: degumming and drying silk to obtain fibroin, processing fibroin to prepare a regenerated silk fibroin film, dissolving silk fibroin, titanium dioxide and chitosan in a polar solvent according to a certain mass ratio to prepare a spinning solution with the mass concentration of 0.01-80%, and preparing the silk fibroin-based antibacterial nanofiber with the average diameter of 10-1000 nm in a room-temperature state by electrostatic spinning equipment. The silk fibroin-based antibacterial nanofiber newly developed by the invention has an antibacterial ratio of more than 95%, has the characteristics of good biocompatibility and excellent mechanical performance while having the characteristic of long antibacterial property, and is suitable for biomedical materials.

The invention belongs to a manufacture method of an antibacterial conductive acrylic fiber, which is characterized by being composed of the following steps: (1) arranging the acrylic fiber into a reaction vessel, then pouring a solvent into the reaction vessel, dissolving copper salt containing Cu<2+> into the solvent, adjusting the pH valve of the solution to be between 1.5 to 3.0, then adding a reducer and heating, maintaining the temperature of the solution to be between 90 to 100 DEG C, carrying out reduction on the Cu<2+> by utilizing the reducer to generate Cu<+> and lead the Cu<+> to be absorbed on the acrylic fiber; (2) adjusting the pH value of the solution to be between 1.5 to 3.0 and then maintaining the temperature of the solution to be between 40 to 120 DEG C, adding salt containing sulfur atoms and leading a great amount of Cu<+> to be oxidized to generate the Cu<2+> after the reaction time lasts 2 to 4 hours; thereby generating a sulfide of copper that is not easy to be dissolved in the solvent to lead the sulfide of copper to be sufficiently and uniformly dispersed on the surface of the whole fiber. The copper sulphide in the acrylic fiber manufactured by utilizing the method is dispersed on the surface of the whole fiber. The self physical and chemical characteristics of the copper sulphide lead the fiber to have excellent antibacterial property and conductibility; the copper sulphide on the fiber surface is not easy to fall off and has excellent anti-washing property.

The invention relates to imparting surfaces with nanometer sized structures that provide bactericidal properties to the surface and devices. In one embodiment, the present invention provides a bactericidal surface with nanometer sized pillars created by imprinting a softened polymer surface with a mold. In another embodiment, the nanometer sized pillars are part of a medical device with antibacterial properties.

Hop beta acids are improved with respect to their antibacterial properties, especially their anti-Listeria properties. Enhancement in this regard is especially useful for the treatment of food products which are susceptible to bacterial contamination. This can be especially important when the hop beta acids are to be used in surface application onto the food products. The hop beta acids are rendered more effective by combining them with a food grade acid, a potassium ion source, and an optional antioxidant in a carrier solvent such as, for example, a food grade alcohols or a food grade glycol. The improved hop beta acid compositions of this invention provide increase stability, higher hop beta acid concentrations, and/or higher anti-Listeria activities.

The invention discloses a graphene-containing marine anticorrosion antifouling coating and a preparation method thereof. Graphene having an antibacterial function is used as a filling material and is added into epoxy resin by surface modification, and the nano composite antifouling coating having antibacterial and anticorrosion properties is prepared. The graphene is added into the epoxy resin to form the marine antifouling coating; the excellent characteristics of the two materials are fully combined, so the coating has both the antifouling characteristic and the anticorrosion characteristic, that is to say, graphene and the epoxy resin are composited, so the antibacterial property of graphene and the anticorrosion property of the epoxy resin are organically combined jointly, and thus the novel antifouling coating having both the anticorrosion property and the antifouling property is developed.

The invention discloses a preparation method of anti-bacterial hydrogel dressing. The method comprises the following steps: 1) dissolving dihydroxy-terminated polyethylene glycol in tetrahydrofuran, adding acryloyl chloride to react at room temperature under the protection of nitrogen, treating the obtained reaction product through filtrating, evaporating, washing and concentrating to obtain polyethyleneglycol diacrylate crosslinking agent; 2) using ZnO nanoparticles containing Ag<+> to prepare 15-30wt% of nanometer water solution, then dissolving natural high molecular material in the nanometer water solution to obtain natural high molecular water solution containing nano-Ag; 3) mixing acrylamide, polyethyleneglycol and natural high molecular water solution containing nano-Ag, placing themixture at room temperature under the irradiation of <60>Co source for crosslinking and obtaining the anti-bacterial hydrogel dressing, the molar ratio of Ag to Zn is 1:4. The anti-bacterial hydrogeldressing prepared by the method is a kind of porous reticular dressing with antibacterial property and hydrating capacity.

The invention relates to antibacterial viscose containing an artemisia argyi oil component and a production method of the antibacterial viscose. The antibacterial viscose takes an artemisia argyi oil microcapsule as an antibacterial agent and a spinning solution is composed of the artemisia argyi oil microcapsule and mucilage glue, wherein the adding ratio of the artemisia argyi oil microcapsule is 10%-30% of alpha cellulose in the mucilage glue and the antibacterial property index are as follows: the antibacterial value is more than 4.0 and the sterilization value is 2.7. The production method of the antibacterial viscose containing the artemisia argyi oil component comprises the following steps: preparing artemisia argyi emulsion, preparing the artemisia argyi oil microcapsule, preparing the mucilage glue, preparing the spinning solution, and spinning and molding. The antibacterial viscose not only has the advantages of maintaining water absorption and air permeability of common viscose and being comfort to wear, but also has high antibacterial rate and good endurance; meanwhile, the antibacterial viscose has a good skin-caring effect and can be widely applied to home textile articles, underwear, sports shirts and the like.