1168 results about "Bacteriocides" patented technology

The invention discloses an inorganic modified super-long salt-spray-resistant water-based paint and a preparation method thereof, and relates to the technical field of water-based industrial paints. The inorganic modified super-long salt-spray-resistant water-based paint at least comprises the following raw materials in parts by mass: 60-70 parts of water-based acrylic resin, 0.1-0.5 part of a bactericide, 0.2-0.4 part of a wetting agent, 0.5-1 part of a dispersing agent, 0.1-0.3 part of a defoaming agent, 0.5-1 part of a pH regulator, 8-12 parts of nano silicon dioxide coated polymerized calcium phosphate, 0.5-2 parts of modified zinc phosphate, 8-10 parts of silk mica powder, 2-4 parts of a coalescing agent and 10-20 parts of water. And 0.5 to 1 part of a polyurethane thickening agent. The inorganic modified super-long salt-fog-resistant water-based paint prepared by the invention has super-long salt fog resistance, high base material adhesion and low ion dissolution amount, and the hardness and water resistance of a coating are also improved.

Mobile or stationary air filter (L) or room fan (RL) according to Figure 1, comprising an outer wall (5), a (2) for generating an airflow (3) which is guided through an air filter material (1.1), an air inlet (2.1) and an air outlet (2.2), wherein the air filter material (1.1) contains poly(styrenesulfonic acid) (sulfonic acid biocide) (1.3) cross-linked with divinylbenzene and / or an acidic salt (1.3.1) (sulfonic acid biocide salt) of the sulfonic acid biocide (1.3) with biocidal cations, wherein the sulfonic acid biocide (1.3) and / or sulfonic acid biocide salt (1.3.1)(i) are positively and / or materially bonded to and / or in inert carriers and, in the fixed state, are in direct contact with carrier materials (1.1.7) on and / or in which biocidal Metal microparticles of a mean particle size d50 of 0.1 µm to <1,000 µm are fixed, and / or (ii) with carrier materials (1.1.7) on and / or in which biocidal metal microparticles of a mean particle size d50 of 0.1 µm to <1.000 µm are fixed, are mixed; its use and methods for the production and environmentally friendly disposal of air filter materials (1.1).

This invention relates to the field of water treatment technology, specifically to a reverse osmosis membrane cleaning agent composed of a non-oxidizing bactericide and an enzyme, and its application. Its main purpose is to remove biofouling from reverse osmosis membranes and restore membrane flux. This patent discloses a novel reverse osmosis membrane cleaning agent formulation. Considering the different pH requirements of the cleaning agent in actual production, different types of bioactive hydrolytic enzymes are selected to disrupt the structure of bacterial cell walls and their extracellular polymers. A reducing agent and a non-oxidizing bactericide are combined to enhance the cleaning effect of the reverse osmosis membrane. For different cleaning purposes, non-oxidizing bactericides suitable for acidic and alkaline cleaning are formulated. Sodium benzoate and benzalkonium chloride show good application prospects in the removal of reverse osmosis membrane fouling.

The invention relates to the technical field of agricultural planting, in particular to a method for preventing and treating watermelon fusarium wilt by using a green bactericide, which comprises the following steps: preparing the green bactericide which comprises the following components in percentage by mass: 18-25% of composite plant source active component consisting of water lettuce extract, enteromorpha polysaccharide and field horsetail flavone; 20%-30% of an antagonistic bacterium compound preparation, wherein the antagonistic bacterium compound preparation comprises bacillus pumilus and trichoderma; 38%-45% of a nano-carrier, wherein a chitosan-sodium alginate compound is used as an embedding material; and the balance of auxiliary components. Applying the green bactericide to watermelon plants; through component optimization and a synergistic effect, compared with the prior art, the composition has the remarkable advantages that the safety is high, all the components are from natural plants or microorganisms, no chemical pesticide residue exists, the composition is healthy to human bodies and environmentally friendly, and the problems of drug resistance and soil pollution caused by chemical agents can be avoided.

The invention belongs to the technical field of fine chemical engineering, and particularly discloses a method for preparing a broad-spectrum bactericide 2-n-butylbenzo [d] isothiazole-3 (2H)-ketone by a molecular editing method. The preparation method comprises the following specific steps: taking 3H-1, 2-benzodisulfophenol-3-ketone and n-butylamine as raw materials, taking Selectfluor as an additive, adding the raw materials and the additive into a mixed solvent, and carrying out heating and stirring reaction, so as to obtain the target product 2-n-butylbenzo [d] isothiazole-3 (2H)-ketone (BBIT). The method is simple and convenient to operate, the raw materials are easy to obtain, the yield is high, thiophenol raw materials or excessive alkali are prevented from being used, and potential application value is achieved.

The invention belongs to the technical field of corrosion prevention and sterilization in oilfield production and oilfield chemistry, and particularly relates to a high-temperature-resistant corrosion inhibition bactericide and a preparation method and application thereof. Specifically, the high-temperature-resistant corrosion inhibition bactericide comprises an organic corrosion inhibitor, an inorganic corrosion inhibitor, a bactericide and water. The high-temperature-resistant corrosion inhibition bactericide disclosed by the invention has broad-spectrum efficient bactericidal performance, high temperature resistance, salt-resistant corrosion inhibition performance, acid resistance and alkali resistance, and meets the application requirements in oil field production.

The invention provides an environment-friendly efficient energizing flushing fluid. The flushing fluid comprises hydrochloric acid, a base fluid A, an energizing capsule B and a catalytic capsule C, the base solution A is prepared from the following components in parts by mass: 100 parts of water serving as a dispersion medium, 0.5 to 1 part of an emulsifier, 0.5 to 1 part of a surfactant, 1 to 2 parts of a cosurfactant, 5 to 10 parts of a mutual solvent, 0.03 to 0.08 part of a drag reducer, 25 to 45 parts of an organic solvent, 0.05 to 0.1 part of a bactericide and 0.3 to 0.5 part of a scale inhibitor; an energy increasing agent CO (NH2) 2 and an energy increasing agent NH4Cl; the energizing capsule B comprises a capsule core and a capsule wall; the capsule wall is paraffin and the like; the capsule core is prepared from NaNO2 and NaHCO3; the catalytic capsule C comprises a capsule core and a capsule wall; the capsule core is oxalic acid and the like; the capsule wall is paraffin and the like. The flushing fluid has the characteristics of small flow resistance, viscosity reduction, obvious energy increase, strong chip carrying capacity, high dynamic paraffin dissolving rate, high paraffin inhibition rate, safety and environmental protection, and can realize multiple effects.

The invention discloses a clothing detergent composition with strong redeposition resistance and a preparation method of the clothing detergent composition. Comprising the following components in percentage by mass: 1%-5% of an anti-redeposition agent, 0.5%-3% of a plant-based surfactant, 7%-15% of an anionic surfactant, 5%-10% of a nonionic surfactant, 0.1%-1% of a chelating agent, 0.1%-0.5% of a bactericide, 0.1%-1% of an enzyme preparation, 0.1%-3% of other additives and the balance of deionized water, and the condition of dirt redeposition in the washing process of the clothes can be obviously reduced, so that the washed clothes are white and clean, the color is brighter, and the overall washing quality is improved.

The invention provides a polyurethane antifouling paint, a preparation method thereof and a polyurethane antifouling coating, and belongs to the technical field of paints. The polyurethane antifouling paint comprises a cross-linkable part and a non-cross-linked resin part, wherein the cross-linkable part comprises a second prepolymer formed by reaction of polyether polyol, dihydroxyl long-chain quaternary ammonium salt and diisocyanate; the non-crosslinked resin part comprises linear or branched chain polyurethane grafted with a sterilizing agent, and the sterilizing agent comprises 3-iodine-2-propynyl-N-n-butyl carbamate. The polyurethane antifouling coating provided by the invention can provide a relatively long-acting antifouling effect in a fresh water environment, the dihydroxyl long-chain quaternary ammonium salt and the bactericide can inactivate protein in contact with the coating, and meanwhile, the reduced free energy on the surface of the polyurethane antifouling coating promotes desorption of surface fouling.

An osmotic bandage for treating wounds, such as cuts, abrasions, minor burns, blisters, and post-surgical incisions. The bandage includes a bandage strip with an adhesive along with a plurality of apertures or airholes disposed therethrough for breathability. The bandage further includes a multi-layered gauze pad. The multi-layered gauze pad includes a first layer, a second salt laced layer, and a third odor-reducing layer. The salt is a natural bactericide, through the dehydration of water in bacteria, and kills any bacteria that attempt to invade or enter the wound site. A semi-permeable membrane cover may be disposed in overlying relation to the pad to prevent the salt from being in direct contact with the wound tissue and causing the patient pain.

The invention relates to the technical field of chemical fertilizer preparation, and discloses a special synergistic pesticide fertilizer for a ratoon cane seedling stage, a preparation method and application thereof, the pesticide fertilizer adopts a core-shell layered structure, and comprises a core fertilizer layer, a pesticide layer and a resin coating layer from inside to outside in sequence; the medical fertilizer comprises the following components: 20-40% of an organic fertilizer; 20%-40% of inorganic nitrogen fertilizer; 5%-20% of a medium element fertilizer; 0.1%-2.5% of an insecticide; 0.1%-2.5% of a bactericide; 0.5%-5% of a composite slow release agent; 0.4%-2% of a resin coating material; and the balance of filler. By optimizing a formula and a preparation process, synergistic release of fertilizer nutrients and pesticide active ingredients is realized, nutrient requirements and disease and pest control requirements of ratoon sugarcanes in the seedling stage are met, the budding rate is remarkably increased, the withered seedling rate is reduced, and yield and income are finally increased; the stability and effectiveness of each component in the pesticide fertilizer can be effectively ensured; through precise application, multiple effects of the pesticide fertilizer are exerted to the maximum extent, and a standardized technical scheme is provided for seedling management of ratoon sugarcanes.

The invention discloses bacillus tequilensis 83IBC04-2 and application thereof, the bacillus tequilensis 83IBC04-2 comes from a deep sea hydrothermal zone and is preserved in China Center for Type Culture Collection on October 15, 2025, and the preservation number is CCTCC NO: M20252212. The compound has a remarkable antagonistic effect on a plurality of important pathogenic fungi such as tomato gray mold, tomato early blight, rice blast and wheat scab, can be used for preparing a broad-spectrum and high-efficiency biological bactericide, effectively reduces the use amount of chemical pesticides, and reduces pesticide residues and environmental pollution.

The invention discloses an ultrahigh-temperature and high-salinity water-based guanidine gum fracturing fluid and a preparation method thereof. The guanidine gum fracturing fluid is prepared from a base fluid, a buffering agent, a cage-shaped molecule composite cross-linking agent and a gel breaker according to the mass ratio of 100: (0.1 to 0.6): (0.2 to 0.8): (0.01 to 0.08), the base solution is prepared from the following components in percentage by weight: 0.55 to 0.6 percent of a cyclodextrin modified thickening agent, 0.1 to 0.6 percent of a composite antioxidant, 0.4 to 0.8 percent of a multi-effect auxiliary agent, 0.1 to 0.2 percent of a sterilizing agent and the balance of hypersalinity water. According to the ultrahigh-temperature hypersalinity water-based guanidine gum fracturing fluid, through chemical modification of the guanidine gum thickening agent and synergistic interaction of various additives, the ultrahigh-temperature hypersalinity water-based guanidine gum fracturing fluid can resist the temperature of 200 DEG C, can be directly prepared by using hypersalinity water, realizes good fracture forming, sand carrying, temperature resistance and shearing resistance, and is low in filtration loss and damage; and the requirements of fracturing construction of ultra-deep ultra-high-temperature low-permeability reservoirs of offshore and onshore oil fields are met.

The invention provides a liquid sulfur removal agent and a preparation method thereof, and belongs to the technical field of natural gas hydrogen sulfide removal treatment.The liquid sulfur removal agent comprises, by weight, 36-66% of s-triazine derivatives, 5-8% of sulfolane, 2-5% of a pH control agent, 10-12% of a stabilizer, 5-8% of a scale inhibitor, 1-2% of a bactericide and the balance deionized water; wherein the s-triazine derivative is selected from a mixture of hexahydro-1, 3, 5-triacetyl-hexahydros-triazine, 1, 3, 5-triacetyl-hexahydros-triazine and 1, 3, 5-triazinane-2, 4-diketone, and the structural formula of the s-triazine derivative is shown in the description. The liquid sulfur removal agent is high in sulfur removal efficiency, good in corrosion inhibition and sterilization performance and not prone to scaling.

The invention belongs to the technical field of surface protective coatings of battery packs for automobiles, and particularly relates to a normal-temperature curing protective environment-friendly flame-retardant water-based coating for a battery pack for a new energy vehicle. The environment-friendly coating is prepared from the following components in parts by weight: 40 to 45 parts of self-prepared acrylic emulsion PK-1220, 30 to 34 parts of 400-mesh aluminum hydroxide, 9 to 11 parts of wollastonite, 4 to 6 parts of expanded graphite, 1 to 2 parts of wood fiber, 0.1 to 0.2 part of thickening agent, 0.3 to 0.5 part of dispersing agent, 0.2 to 0.3 part of sterilizing agent and 0.5 to 1 part of coalescing agent. The high-environment-friendly flame-retardant water-based coating disclosed by the invention has the functions of protection and stone impact resistance, improves the safety of a battery pack or an oil tank in a driving process, can reduce noise in a vehicle, and can protect the safety of passengers and external personnel and avoid property loss especially when a fire breaks out.

The invention provides a preparation method of picoxystrobin, and belongs to the technical field of bactericides. According to the preparation method of picoxystrobin, no intermediate needs to be separated in the preparation process, side reactions are few, production operation is simpler, the product yield and purity are high, and the preparation method is suitable for industrial production. And the etherification reaction raw material used in the invention is 2-chloro-6-trifluoromethylpyridine, has no large corrosivity or safety risk, is convenient for post-treatment, has low requirements on production equipment, and is lower in cost.

The invention provides a reverse osmosis optimal dosing system and method based on ultraviolet sterilization, and the method comprises the following steps: firstly, the system monitors the influent microorganism load and water quality in real time, dynamically calculates the required ultraviolet dosage, and precisely adjusts the power of an ultraviolet sterilizer; secondly, according to the residual microorganism risk and the water inlet flow after ultraviolet treatment, the feeding amount of an oxidizing bactericide (such as sodium hypochlorite) is accurately adjusted according to a PID control strategy combining feedforward and feedback; meanwhile, according to the oxidation-reduction potential of the sterilized water body, a reducing agent (such as sodium hydrogen sulfite) is intelligently added to protect the reverse osmosis membrane. And finally, efficient cooperation of ultraviolet physical sterilization and chemical sterilization is achieved, on the premise that strict control over microbial pollution is guaranteed, the consumption and operation cost of chemical agents are remarkably reduced, generation of by-products is reduced, the service life of a reverse osmosis membrane is prolonged, and the intelligent level of system operation and the overall economic benefits are improved.

The invention discloses a plant bactericide and a preparation method thereof, and relates to the technical field of bactericides. Comprising the following components: 30-40 parts of plant source extract nano microcapsules, 5-8 parts of a nano carrier, 3-6 parts of a composite synergist, 4-6 parts of dextran, 1-3 parts of eugenol, 4-8 parts of hydroxypropyl trimethyl ammonium chloride chitosan, 3-5 parts of an auxiliary agent, 50-60 parts of ethanol, 100-150 parts of water and 3-5 parts of an emulsifier. The plant source extract is prepared by extracting the following raw materials in parts by weight: 10-20 parts of peach pit green tangerine peel, 8-15 parts of Chinese prickly ash, 4-6 parts of radix sophorae flavescentis, 3-5 parts of ginkgo leaves, 3-5 parts of garlic, 5-8 parts of eucalyptus leaves and 3-5 parts of sophora alopecuroide. The plant bactericide has the advantages of obvious bactericidal effect, low drug resistance risk and good field control effect.

The invention discloses a recyclable water-based metal cutting fluid and a preparation method thereof. The cutting fluid comprises the following raw materials in parts by weight: 32-36 parts of base oil, 8-12 parts of amines, 9-12 parts of a surfactant, 0-8 parts of an extreme pressure agent, 6-9 parts of a lubricant, 4-6 parts of an antirust agent, 0-2 parts of a bactericide, 2-4 parts of a coupling agent, 0.1-1 part of a defoaming agent and the balance of deionized water. The preparation method comprises the following steps: dissolving the amine in water in advance, adding the anti-rust raw material into the amine solution, fully stirring until the anti-rust raw material is completely dissolved, finally adding the base oil, the surfactant and other additives, and continuously stirring until the anti-rust raw material is completely clarified and transparent. The preferable antirust agent is tris (2-carboxyethyl) phosphine oxide, the excellent extreme pressure effect and bactericidal performance are achieved through carboxyethyl and phosphine oxide structures contained in the tris (2-carboxyethyl) phosphine oxide, and the finished product has good long-term stability, high oil film lubricity and excellent antirust and anti-corrosion performance.

The invention discloses a rice blast prevention and control and fertilizer efficiency improvement dual-objective optimization method, and relates to the technical field of agricultural informatics, and the method comprises the following steps: S1, data collection: obtaining rice field environment parameters, rice plant physiological parameters and pathogenic bacteria infection pressure indexes in real time; s2, constructing a double-objective collaborative optimization model: based on the data in the step S1, establishing a dynamic decision-making model which takes the maximization of the fertilizer efficiency utilization rate and the minimization of the rice blast occurrence risk as a combined objective. According to the method, a dynamic decision-making model taking maximization of the nitrogen fertilizer utilization rate and minimization of the rice blast severity as a combined target is constructed, the nitrogen fertilizer application amount, the bactericide type and the time sequence are subjected to collaborative optimization, a weight coefficient is introduced into the model, the target priority is dynamically adjusted according to the growth period, and the nitrogen fertilizer application amount is restrained in an agronomic safety interval; diseases caused by excessive application of nitrogen are avoided, positive correlation between the nitrogen fertilizer and the diseases is reduced from the source, pesticide dependence is reduced, and double improvement of the control effect and the fertilizer effect is achieved.

The invention discloses a dirt detection and treatment system for a sea drainage pipeline. The dirt detection and treatment system comprises a detection device and a dosing device, according to the detection device, the type and content of dirt are analyzed through a Fourier infrared spectrometer, the agent release amount of the agent adding device is adjusted in real time through an electromagnetic valve according to the result, and accurate agent release is achieved. The dirt detection and treatment system disclosed by the invention can accurately detect the scaling and corrosion states of a pipeline in real time and accurately control the addition amount of an upstream scale inhibitor and a bactericide, so that marine pollution caused by abuse of chemicals is greatly reduced, and an efficient, environment-friendly and real-time automatic pipeline dirt solution is realized.

The invention relates to the technical field of wet tissues, in particular to an all-cotton wet tissue which comprises a base material and a wet tissue immersion liquid, wherein the wet tissue immersion liquid contains 0.1-0.4 wt% of a thickening agent, 0.1-2 wt% of a surfactant, 0.14-0.28 wt% of a pH regulator, 0.01-0.35 wt% of an environment-friendly non-irritant bactericide, 0.1-1.5 wt% of propylene glycol, 0.01-0.2 wt% of essence and the balance of deionized water; the preparation process of the environment-friendly non-irritating bactericide comprises the following steps: dissolving propyl gallate in ethanol, adding into a tea polyphenol-PEG acrylate modified quaternary ammonium salt modified carboxymethyl chitosan solution, adding a chitosan sulfate catalyst, adjusting the pH value to 5-7, and stirring and reacting in a constant-temperature water bath at 60-80 DEG C for 4-8 hours to obtain the environment-friendly non-irritating bactericide. According to the all-cotton wet tissue, the environment-friendly non-irritating bactericide is added into the wet tissue immersion liquid, so that the all-cotton wet tissue has very good environment-friendly non-irritating bactericidal performance.

The invention relates to a method for regulating and deacidifying in a bioleaching process of low-grade copper sulphide ore, aiming at the problem of excessive acid caused by excessive oxidation of pyrite in a dump leaching system, a thiocyanate bactericide is added into the bioleaching system of the low-grade copper sulphide ore, and the thiocyanate bactericide is dissolved in a spray liquid of the bioleaching system, and is added into the spray liquid of the bioleaching system; under the catalytic action of mineral leaching microorganisms, oxidation of ferrous ions is enhanced, so that the oxidation-reduction potential of a solution is increased, oxidation of pyrite is intensified, acid accumulation is excessive, the thiocyanate bactericide can remarkably inhibit the activity of part of sulfur-oxidizing bacteria and even kill part of sulfur-oxidizing bacteria, and therefore the activity of ferrous oxide is reduced; compared with the prior art, the method has the advantages that the sulfur oxidation activity of microorganisms is greatly influenced, but the oxidation influence on iron is relatively small, so that the acid leaching is reduced under the condition that the copper leaching of the copper sulfide ore is not influenced, the copper leaching is not influenced, the acid leaching is reduced, the production cost is reduced, the environmental influence is reduced, and the like.

This invention discloses a silicone emulsion defoamer for textiles and its preparation method. It is prepared from the following components by weight percentage: 5%-40% polysiloxane silicone paste, 0.3%-20% silicone polyether, 1%-20% emulsifier, 0.1%-5% thickener, 0.05%-0.3% bactericide, and the balance being water, with the sum of the weight percentages of all components being 100%. The stability of the emulsion under high temperature and high pressure environments is improved by using cross-linked polysiloxane silicone paste and silicone polyether with a specific structure. The cross-linked polysiloxane silicone paste provides superior defoaming and foam-suppressing performance. Utilizing the intertwined spatial structure of the high-viscosity silicone composition and the silicone polyether, the defoamer prepared by this method not only exhibits good stability under high temperature and alkaline environments but also significantly improves its late-stage foam-suppressing performance in sizing. More importantly, it enhances the compatibility between the silicone emulsion defoamer and the sizing.

The application discloses application of Trichoderma asperellum strain YN4 and fungicides in prevention and treatment of plant fungal diseases. The application research shows that the Trichoderma asperellum strain YN4 has a good inhibitory effect on pepper anthracnose, rubber anthracnose, mango anthracnose, soybean anthracnose and the like. Further, compared with the single use of fungicides or the Trichoderma asperellum strain, the inhibitory effect of the combination of the two is better. Under certain conditions, the Trichoderma asperellum strain is combined with 10% difenconazole water dispersible granules, 70% thiophanate-methyl wettable powder or 450g / L prochloraz emulsion in water, and has a synergistic effect. Not only can the use amount of fungicides be greatly reduced, but also the inhibitory effect on plant pathogenic fungi can be further improved, the incidence can be reduced, the inhibition on pathogenic bacteria can be enhanced, the use and residue of chemical pesticides can be reduced, and technical support is provided for the selection of fungicides for pepper anthracnose and the like and the combination of bacteria and drugs.

The invention discloses a high-constructability low-emulsion real stone paint modified additive and a preparation method thereof, belongs to the technical field of building coating auxiliary materials, and aims to solve the problems that low-emulsion real stone paint is poor in viscosity stability, high in construction shakeout rate and insufficient in water resistance and the cost is high due to the fact that traditional real stone paint is high in emulsion dosage. All the components have a synergistic effect, the cellulose provides a stable thickening effect, the bactericide prevents microorganism breeding, the defoaming agent eliminates bubbles, the coalescing agent ensures complete film formation under low emulsion, the ethylene glycol improves the freezing resistance and moisture retention, and the multifunctional additive is matched, so that the low-emulsion real stone paint system is adapted, and the constructability and the stability are considered. The preparation method comprises the following steps: preparing a cellulose aqueous solution, compounding functional components, filtering and storing, and carrying out performance verification. Through refined process control, the purity and function stability of the additive are ensured, after the additive is compounded with a stone-like paint base material, the product performance can be remarkably optimized, the emulsion dependence and the production cost are reduced, and both economical efficiency and practicability are achieved.

The present application relates to the field of microbiological technology, and particularly relates to a pathogenic bacterium causing root rot symptoms of red heart disease of Astragalus membranaceus and application thereof, the pathogenic bacterium is Fusarium sp. Fusarium sp. FUS-001-2025, preserved in China General Microbiological Culture Collection Center on March 16, 2026, with the preservation number of CGMCC No. 42529; it is determined to be a new recorded strain of Fusarium sp. through morphological and molecular identification, and the bactericide sensitivity determination shows that 25% silthiofam·prochloraz has the strongest inhibition effect, 25% bromothalonil, 50% azoxystrobin and 70% methylthiophanate have significant inhibition at high concentrations. The present application provides an important pathogenic bacterium resource for the pathogenic mechanism, disease resistance evaluation and development of control agents of red heart disease of Astragalus membranaceus.

Provided is a growth inhibitor for Clostridioides difficile. A growth inhibitor for Clostridioides difficile, comprising killed Enterococcus faecalis. Also provided are a parenteral pharmaceutical preparation, a bactericide, a disinfectant, an antibacterial agent, a sanitizer or a detergent for inhibiting the growth of Clostridioides difficile.

The invention belongs to the technical field of agricultural biology, and particularly discloses application of honokiol in preparation of a bactericide for preventing and treating fungal diseases of plants, and honokiol is derived from plants, is a green, environment-friendly and high-safety small molecule compound, is wide in antibacterial spectrum and long in lasting period, and can be applied to prevention and treatment of fungal diseases of plants. The bactericidal composition can be used for effectively preventing and treating plant diseases of peanuts, corns, wheat, Chinese chives, soybeans, peppers, tomatoes and the like, can be applied to industrial crops such as various grains, melons and fruits, vegetables and the like, is safe to non-target organisms, meets the requirements of green sustainable development, and has a wide application value.

The present invention relates to 3-substituted arylamidine compounds of formula (I), wherein R1, R1a, R2, R3, R4, R5, R6, R7 and A are as defined in the detailed description. The present invention further provides methods for the preparation of said compounds and their use as a fungicide.