2363 results about "Bacteriostatic agent" patented technology

The invention discloses an edible biological preservative film and a preparation method thereof. The edible biological preservative film comprises the following components in parts by weight: 30-60 parts of a film former, 1-10 parts of a natural antioxidant, 1-10 parts of a natural bacterial inhibitor, 1-4 parts of a plasticizer and 0.5-4 parts of an emulsifier. The preparation method comprises the following steps: mixing the components in proportion to form preservative film liquid, and preparing the preservative film by adopting a tape-casting process. According to the preservative film, excellent film forming performances of materials such as marine polysaccharides, chitosan, gelatin and the like are utilized, the natural antioxidant and the natural bacterial inhibitor are selected and used, and the modification process is carried out through the plasticizer, the emulsifier and the like, so that the prepared preservative film is good in mechanical property, delays the spoilage of an aquatic product and can effectively prolong the shelf life of the aquatic product.

The present invention provides a method of treating bacterial respiratory infections by pulmonary administration of protonated / acidified nucleic acids. These modified nucleic acids are effective as bactericidal and / or bacteriostatic agents without regard to the class of bacteria, so are especially useful when diagnosis is difficult or when multiple infectious organisms are present. The antibiotic activity of nucleic acids of the invention is not dependent on either the specific sequence of the nucleic acid or the length of the nucleic acid molecule.

This invention relates to a method for coating a medical device comprising the steps of applying to at least a portion of the surface of the medical device, a bactericidal coating layer, wherein the bactericidal coating layer comprises a bactericidal agent; and applying to at least a portion of the surface of the medical device, a bacteriostatic coating, wherein the bacteriostatic coating layer comprises a bacteriostatic agent wherein the combination of the bactericidal and bacteriostatic agents are in an effective concentration to inhibit growth of microbial organisms relative to an uncoated medical device. The two antimicrobial agents are used to develop a kit comprising these compositions in one container or in separate containers. The kit is used to coat or flush medical devices prior to or after implantation in a mammal.

The raw material composition of the invented high-concentration aqueous film-forming foam extinguishing agent includes fluorocarbon surfactant, hydrocarbon surfactant, organo-silicon surfactant, stabilizing coupler, chelating agent, spreading burn-resisting agent, bacteriostatic agent and water. It can be used for quickly extinguishing oil fire.

The invention provides an antibacterial non-woven fabric and a preparation method thereof. Both the upper surface and the lower surface of the antibacterial non-woven fabric are provided with antibacterial film-forming agent layers; each antibacterial film-forming agent layer is obtained by thermally curing a polymer film-forming agent; the polymer film-forming agent has the viscosity of 50-20,000cp and the solid content of 5-55 percent; the film-forming agent has the fluid rate of 2-20 percent; and the polymer film-forming agent is prepared from the following raw materials in percentage by mass: 80-94 percent of a high polymer emulsion, 1-10 percent of a bacteriostatic agent and 5-10 percent of an addition agent. The polymer film-forming agent is selectively roller-coated on the non-woven fabric after the non-woven fabric is formed, so that an antibacterial effect of the non-woven fabric is improved, the antibacterial time is prolonged, and the really long-term antibacterial purpose is achieved.

The invention discloses a purely natural edible multifunctional preservative film having natural and edible characteristics. The preservative film is multifunctional because a chitosan serving as a water-retaining agent, a natural plant extract serving as a bacteriostatic agent and an antioxidant act synergistically. The purely natural edible multifunctional preservative film of the invention is mainly used for storing meat products, in particular to preserving fresh cooled meat and is economical and reliable, convenient in use, high in safety and environment-friendly.

A composition comprising a trivalent bismuth salt, particularly bismuth nitrate, and dimercaprol is described. Methods for using the composition as a bacteriocidal and bacteriostatic agent and as a disinfectant and preservative are also provided.

The invention discloses a mussel mucoprotein gel for repairing and reliving itching. The mussel mucoprotein gel is prepared from the following components in percentage by weight: 0.15%-0.2% of mussel mucoprotein, 0.5%-2% of a macromolecule host material, 3%-10% of a humectant, 1%-5% of a surfactant, 0.1%-0.5% of a preservative, 1%-2% of a protein protectant, 0.5%-3% of a stabilizer, 0.5%-1% of a bacteriostatic agent, 0.8%-5.2% of a pH modifier and the balance of purified water. The mussel mucoprotein gel has good biological adhesion, is rapidly and effectively adhered to a wound surface, is capable of rapidly reliving itching and easing pain, and has the advantages of being low in immunogenicity, good in biocompatibility with a human body, convenient to use, free of thrill to skin, safe, nontoxic and free of bad reaction.

The invention provides a bacteriostatic deodorant super absorbent resin. An acrylic acid / acrylate mixed solution is prepared by neutralization of a basic compound and an acrylic monomer solution; a primary crosslinking agent and a primary dispersing agent are added into the mixed solution and uniform stirring is performed; an antibacterial agent is added and uniform stirring is continued; a temperature is raised to a range of 35 DEG C-70 DEG C; an initiator is added for polymerization to form colloid super absorbent resin; granulation and drying are performed on the colloid super absorbent resin in order; a composite bacteriostatic crosslinking agent is added at a temperature in a range of 110-180 DEG C for surface treatment to form the core-shell-type super absorbent resin having a three-dimensional crosslinking network structure. The bacteriostatic agent is one or two selected from a group consisting of an amino acid metal salt ion chelate and a chitosan metal salt ion chelate. The super absorbent resin provided by the invention is applied in sanitation hygroscopic products, has notable bacteriostatic and deodorant properties, has easily available raw materials, has low costs and has huge benefits.

The invention belongs to the field of aseptic technologies integrating compound natural aseptic and bacteriostatic agents and flexible sterilizing conditions, and relates to a preparation method for an aseptic containing compound clove / cinnamon extracts and the aseptic application of the aseptic in sauce products. The compound clove / cinnamon extracts are firstly prepared, and the aseptic containing the compound clove / cinnamon extracts is prepared afterwards; the aseptic application of the aseptic in sauce products is characterized in that the addition of the aseptic with a mass fraction of 0.2 percent is integrated with the condition that sterilization is carried out for 20-30 minutes at a temperature of 85 DEG C for the aseptic and bacteriostatic purposes, so as to achieve the one-year shelf life of sauce products and good bacteriostatic and aseptic effects. According to the invention, the compound clove / cinnamon extracts have the advantages of high safety and wide bacteriostatic range, and the aseptic containing the compound clove / cinnamon extracts has high water solubility and stability; the aseptic method can not only kill microorganisms in sauce products but also better preserve nutrients in sauce products, and is an aseptic approach remarkably integrating natural aseptic materials and flexible sterilization, thereby achieving broad application prospects.

The invention discloses a metal complex and its preparation method as well as its application. The metal complex comprises a metal complexant and metal ions. A composition, composed of the metal complex and used for eliminating chemical injuries and chemical hazards, comprises by weight: 0.2-20 parts of metal complex, 1-10 parts of amino acid, 0.1-5 parts of NaC1, 0.1-10 parts of organic acid calcium salt and 0.01-2 parts of bacterial depressant. Non-irritating, non-corrosive and non-allergic to the skin, the composition containing the metal complex is not only used for eliminating hazardous chemicals in the human body, but also used for neutralizing and eliminating leaked hazardous chemicals in the environment.

The invention discloses a seed coating and a preparation method thereof, which relates to a preparation used for treating crop seeds and belongs to plant seed coating technology in the field of agriculture and forestry. Raw materials of the seed coating disclosed by the invention are composed of biological protein, humic acid, seaweed gel, sodium benzoate, ethylene glycol, Twain 80, a bacteriostatic agent, a nutritional agent and water. The beneficial effects of the seed coating are as follows: slurry and crop seeds are fully stirred according to a proportion of 1: (30-80) until the liquid medicine is uniformly distributed on the surfaces of the seeds, and the seeds can be planted after being dried. As shown in a large amount of experiments, the physical and chemical properties of a novel biological seed coating completely meet general requirements of the seed coating, the film forming property is good, the coating can quickly cure to a film under natural conditions without dropping, connecting or agglomerating, and meanwhile, the experiments prove that the seed coating can obviously promote the growth of paddy rice, corn, wheat, soybean, cotton and pepper and improve the germination rate and seedling rate and has a significant effect of preventing and treating diseases and insect pests of crops.

A natural fruit and vegetable cleaning fresh-keeping agent comprises a film forming agent, a surfactant, an antibacterial agent and an ionic agent, has both cleaning and fresh-keeping effect. The ingredients are natural food grade ingredients, harmless to human body, easy to naturally degrade, and strong in decontamination ability, after use, can effectively remove pesticide residues, heavy metals and other toxic substances on the surface of fruits and vegetables, can eliminate and inhibit the bacteria growth, also can from a film on the surface of the fruits and vegetables, and can prevent moisture loss and corruption to achieve the fresh-keeping effect.

The invention relates to environment-friendly waterproof bacteriostatic paint and a preparation method thereof. The environment-friendly waterproof antibacterial paint is prepared through ylate emulsion, polyurethane emulsion, nanometer aluminium oxide, talcum powder, a dispersing agent, an absorbing agent, a curing agent, a bacteriostatic agent, a thixotropic agent, a thickening agent, an anti-aging agent, deionized water and the like. The environment-friendly waterproof antibacterial paint comprises, by weight, 15-20 parts of the ylate emulsion, 15-20 parts of the polyurethane emulsion, 6-7 parts of the nanometer aluminium oxide, 5-7 parts of the talcum powder, 5-6 parts of the dispersing agents, 5-6 parts of the absorbing agents, 7-8 parts of the curing agents, 5-6 parts of the bacteriostatic agents, 4-5 parts of the thixotropic agents, 5-6 parts of the thickening agents, 3-4 parts of the anti-aging agents and 22-25 parts of the deionized water. The formaldehyde emission of the environment-friendly waterproof antibacterial paint is 0 g / l, the value of TVOC is 0 g / l, and meanwhile the environment-friendly waterproof antibacterial paint has the effects of water resistance, bacterium inhibition and algal inhibition and is wider in application range.

Production of algin oligose and its usage are disclosed. The process is carried out by degrading for 1-5% algin solution at 40-80 degree and pH value 2-5 by supersonic wave for 7-10 hrs, adding anhydrous alcohol into degrading liquid, eluting by alcohol, extraction filtering, drying and grinding to obtain final product. The average polymerization is below 10 degree. It's simple and cheap, it can inhibit Gram-negative bacterium or positive bacterium growth effectively, have better broad-spectrum antibacterial activity, anti-inflammatory and analgetic functions.

The present invention relates to an open type plant tissue seedling cultivation method pertaining to the agroforestry field of plant tissue seedling cultivation technology. The method can be performed in a nonsterile natural environmental condition in a room temperature and the method comprises steps of adding plant extracts bacteriostatic agent in a culture medium, in each 1L culture medium, adding bacteriostatic agent of 4-15g, manufacturing a bacteriostasis culture medium, and performing an inoculated culture by utilizing the bacteriostasis culture medium. The bacteriostatic agent comprises two kinds one of which comprises garlic extracts, coptis root extracts and honeysuckle leaf extracts with a mass percent of 20-100%:0-40%:0-50%; the other one of which comprises liquorice root extracts, osmanthus extracts and lycoris radiata extracts with a mass percent of 10-100%:0-80%:0-50%. By utilizing the method of the present invention, the plant tissue seedling cultivation process can be divorced from a stringent axenic operation environment and can be performed in an open nonsterile environment, therefore, links in the plant tissue seedling cultivation are simplified radically, the working efficiency is improved and the breeding cost is greatly reduced.

The invention relates to a hydrogel wound dressing and a preparation process thereof. The finished product of the hydrogel wound dressing is prepared by using gel, a cross-linking agent, a chelating agent, pH regulator, a thickening agent, humectant and a bacteriostatic agent as raw materials, and conducting pH regulation, mixing, secondary pH regulation, drying and other processes. The hydrogel wound dressing and the preparation process have the advantages that cross-linking and curing are conducted on the basis of traditional hydrogel to form the hydrogel wound dressing, and the preparation method is simple and convenient to operate; the prepared hydrogel wound dressing overcomes the defect that water absorption of a hydrogel dressing is insufficient, the mechanical strength of hydrogel is improved, and practicability and the experience feeling are enhanced; the prepared hydrogel wound dressing can provide a wet heal environment and can also absorb a large amount of seepage; a macromolecule hydrophilic material is adopted for hydrogel, no fiber is left when the dressing is replaced, the dressing does not adhere to wound surfaces, pain is relieved, and meanwhile hydrogel is good in biocompatibility and free of toxic and side effects.

The invention relates to a dust inhibiting agent used during the railway transportation process of powdered materials and a preparation method thereof, the dust inhibiting agent comprises the following raw materials: polyvinyl alcohol, starch, polyacrylamide, carboxymethyl cellulose, natural plant glue, a surfactant, an antifreeze auxiliary agent, and a bacteriostatic agent. The dust inhibiting agent provided by the invention can inhibit the dust pollution brought by railway transportation of powdered materials, especially inhibits the PM 2.5, is capable of solving the antifreeze problem when using the dust inhibiting agent in winter, and achieves the goals of safety and environment-friendliness.

The invention relates to a novel hydrogel scar patch and its preparation process. The hydrogel scar patch is composed of a support layer, a hydrogel layer and an isolation layer. The scar patch is characterized in that the hydrogel layer consists of the following components by mass: 0.4-3% of a water-soluble high polymer compound Carbomer, 4-8.5% of polyacrylic acid resin, 0.1-1% of polyvinyl alcohol, 0.1-2% of sodium carboxymethyl cellulose, 0.01-0.5% of polyvinyl pyrrolidone, 20-30% of a moisturizing agent, 0.03-0.3% of a cross-linking agent, 0.02-0.3% of EDTA, 0.05-1% of a bacteriostatic agent, 50-70% of deionized water, a proper amount of a pH conditioning agent, and 1-20% of a drug.

The invention discloses an absorbable medical suture line. The absorbable medical suture line comprises the following components in parts by weight: 30-50 parts of polyglycolic acid, 16-20 parts of collagen, 2.5-3 parts of chitosan, 1-2 parts of a bacteriostatic agent, 1-4 parts of a stabilizer, and 2-6 parts of a biological cross-linking agent. A preparation method for the absorbable medical suture line comprises the following steps: co-mixing the required components under a certain condition, extruding, performing water-cooling, drying in the air, pelletizing, spinning, stretching in a water bath and the like. All raw materials of the obtained suture line can be absorbed and degraded in vivo, free of stimulus on tissue, and are free of toxic or side effects, and a wound is free of obvious stitching marks after being healed. The formula of the composition is reasonably designed, so that the prepared product has excellent mechanical performances of high tensile strength, high bending modulus, and the like, and has the characteristic of easiness machining and shaping without obvious individual difference, and the pains of a patient are relieved.

A process for producing a film having incorporated or applied thereon or therein an antimicrobial agent and a liquid additive is provided wherein the film comprises a liquid absorbent layer and an impermeable layer are provided. The films can be used for producing a tubular casing or shrinkbag such as casings for foodstuffs.

The invention relates to an annular protecting liquid for oil and gas wells and belongs to the chemical technology field. In the liquid, a solution of organic acid salts is used as a density modifier, an imidazoline quaternary ammonium salt is used as a corrosion inhibitor, a quaternary ammonium salt cationic surfactant is used as a bacteriostatic agent and an isoascorbic acid alkali metal salt or an optical isomer thereof is used as a deoxidant. And an iron-centric coordination compound with two-valence ion or basic zinc carbonate can be added as a Desulphurizing Reagent, according to the sulfur-containing situation of a casing annulus. With a corrosion rate to N80 steel discs of 0.070mm / a and a corrosion rate to TP110SS steel discs of 0.0105mm / a, the annular protecting liquid, which is capable of prolonging the service life of an annular tubular column of a shaft by over 50% and decreasing the safety accidents resulted from corrosion perforation by over 30%, satisfies the requirements of annular protecting liquid for wells with different depths, has the characteristics of low stratum damage rate and no pollution and is applicable to the annular protection of oil and gas wells with high content of sulfur or other oil and gas wells.

The invention discloses an open-type plant tissue culture method. A volatile plant essential oil bacteriostatic agent is added into a culture medium, a high-pressure disinfection process is saved, and inoculation is performed in an indoor open environment; and the culture material is cultured in an environment with the temperature and illumination conditions for plant tissue culture. According to the invention, the volatile bacteriostatic agent can disinfect the space in a bottle while disinfecting the culture medium, thus the culture grows in a relatively sterile environment, and the probability of the culture getting polluted is reduced; a small amount of bacteriostatic agent is added into the culture medium (the total amount is 2mul-2ml / L of culture medium), and the influence on the osmotic pressure of the culture medium is avoided; the components are non-toxic to human body; and the addition amount is small, and the irritant smell is avoided.

The invention discloses an etching plaster for metal and metal oxide transparent conducting layers and an etching process, in the invention, lagging production processes, such as the use of organic solvents, strong acid etching and strong alkaline cleaning and the like, are not used any longer, instead, the etching plaster and the etching process which do not pollute the environment are used. The etching plaster comprises the following components in parts by weight: 0.1-20 parts of salt substance, 2-50 parts of non-volatile acid, 10-30 parts of aqueous high molecular polymer, 0.1-10 parts of dilute wetting dispersant, 0.1-5 parts of defoamer, 10-40 parts of thickening agent, 0.1-10 parts of bacteriostat and 2-30 parts of water. The invention simplifies the process flow, cancels acid and alkali soaking and the use of organic solvents, lowers the environmental protection cost, improves the etching quality of products, and has the effects of high efficiency, energy saving and environmental protection. The invention is widely applied to the fields of electron, semiconductors, fine chemistry industry and the like.

The invention discloses a deodorant disinfectant for household garbage. The deodorant disinfectant comprises main components and auxiliary components, wherein the main components comprise bentonite, S<2-> precipitating agent, Cu<2+> bacteriostatic agent and oxidizing agent; the mass ratio of the bentonite to the S<2-> precipitating agent to the Cu<2+> bacteriostatic agent to the oxidizing agent is 100:(2-20):(0.1-3):(0.01-3); the auxiliary components are materials which cannot antagonize the deodorizing and disinfecting functions of the household garbage; the contents of the auxiliary components are 0-50 percent of total mass of the bentonite, the S<2-> precipitating agent, the Cu<2+> bacteriostatic agent and the oxidizing agent. The deodorant disinfectant for the household garbage, which is disclosed by the invention, has the advantages of wide sources of raw materials, simpleness in manufacture and low cost; the stink of the household garbage and generation sources of pathogenic microorganism can be controlled and the problem of environment stink can be effectively solved.

The invention relates to a sustained-release oral ulcer film having biological adhesion and a preparation method of the sustained-release oral ulcer film. According to the formula, the sustained-release oral ulcer film having the biological adhesion consists of the following components in percentage by weight: 5-50% of a bio-adhesion material, 5-80% of a sustained-release film forming material, 0.5-10% of a medicine, 1-50% of a supporting agent, 1-20% of a plasticizer, 0.1-0.5% of a bacteriostatic agent and 0.5-1% of a flavoring agent. The film provided by the invention, which is prepared in a specific production mode, is good in stability, and excellent biological adhesion and sustained-release performance of the film can be kept for a long time; a soluble sustained-release gel can be gradually formed as the film is adhered to an ulcer surface and absorbs water, so that contact of the ulcer surface with external side is prevented; the oral ulcer film provided by the invention has the characteristics of diminishing inflammation, alleviating pain, achieving an antibacterial effect and being free from toxins, irritation, mutagenic action and the like; and the oral ulcer film can promote growth of blood vessel endothelium and proliferation of fibroblasts and keratinocytes, and subsequently, the oral ulcer film can promote regeneration, repair of healing of the ulcer surface.

A low-concentration atropine medicine-containing eye drop comprises the following components: (A) 0.001-1% (w / v) of an atropine medicine, (B) 0-10% (w / v) of a solute with the effects of lubricating, solubilizing and moisturizing, (C) an acidity and alkalinity regulating agent of which the amount is proper to ensure that the pH is regulated to 6.0-8.0, (D) an osmotic pressure buffering agent of which the amount is proper to ensure that the osmotic pressure is regulated to 280-380 mOsm / L, (E) a thickener of which the amount is proper to ensure that the viscosity is regulated to 6-10 mps, (F) 0.001-1% (w / v) of a solute with an atropine medicine stabilizing effect, (G) 0-0.1% (w / v) of a bacteriostatic agent, 0-0.1% (w / v) of one or more of mint, natural borneol, vitamin B6, dipotassium glycyrrhizinate or other substances with auxiliary effects which can be also optionally added under the premise that the safety is ensured and the efficacy of the main medicine is not affected, and the balance of water. The eye drop is good in stability of the main medicine and safe, is unlikely to be contaminated by microorganisms, and can effectively prevent and relieve juvenile myopia.

The invention provides a microemulsified cutting fluid. The microemulsified cutting fluid comprises following ingredients, by weight, 3.00 to 21.00% of a pH value conditioning agent, 0.50 to 4.00% of an antirust agent, 0.50 to 2.00% of a bacteriostatic agent, 6.00 to 18.00% of an anionic surfactant, 1.00 to 5.00% of a nonionic surfactant, 1.00 to 4.00% of a corrosion inhibitor, 4.00 to 15.00% of a base oil, and 40 to 50% of water. The microemulsified cutting fluid possesses excellent rust resistance, lubricating properties, and especially excellent corrosion resistance on aluminium alloy, so that a problem that corrosion resistance of conventional microemulsified cutting fluid on different aluminium alloy processing is poor is solved. The microemulsified cutting fluid is suitable for processing of metal such as aluminium parts and steel parts. The microemulsified cutting fluid contains no toxic chemicals, such as nitrite and hydrozybenzene, which are harmful for human body or the environment, is friendly to the environment, and is high in efficiency.

The invention discloses voriconazole eye drops. Every 1000 milliliters of eye drops contain 3-50g of voriconazole powder, 20-500g of hydroxypropyl-beta-cyclodextrin, 0.1-0.3g of bacteriostat, 0.5-2.5g of sodium hyaluronate and the balance of water for injection, wherein the bacteriostat is benzalkonium chloride, benzalkonium bromine or ethylparaben. The invention also discloses a preparation method of the voriconazole eye drops. The invention greatly increases the solubility of voriconazole in water to 0.3-5%, so that the medicine can exist in water solution in the form of molecules, thereby providing convenience for exerting the antifungal action of the medicine. Meanwhile, when being applied to eyes, the invention provides convenience for exerting the antifungal action of the medicine through cornea. The preparation method can be carried out at room temperature without affecting the medicine stability, and has the advantages of simple and easy realization and low cost.

The invention relates to a freshness-keeping and water-retaining agent for prawns, belonging to the technical field of processing of aquatic products processing. The freshness-keeping and water-retaining agent is prepared from the following ingredients in percentage by weight: 5-10% of water-soluble chitosan, 10-20% of carboxymethyl chitosan, 10-20% of mycose, 5-10% of an antioxidant, 10-20% of konjac polysaccharide degradation product, and the balance of dextrin. For the freshness-keeping and water-retaining agent, konjac polysaccharide with strong hygroscopic property is degraded into oligosaccharide, which serves as a main auxiliary material of the water-retaining agent, the water-soluble chitosan is taken as a main auxiliary material for a bacteriostatic agent, and the carboxymethyl chitosan is taken as a film-forming agent, so as to prepare the freshness-keeping and water-retaining agent for prawns. After the freshness-keeping and water-retaining agent for prawns is applied to prawn processing, the freshness-keeping time of the prawns can be prolonged, blackening of the prawns is prevented, during refrigeration storage process of the prawns, water can be kept, and loss caused by drying loss is prevented. A processing technology of the freshness-keeping and water-retaining agent is simple, and easy to operate, and expected use effect can be achieved.