82 results about "Benzisothiazolinone" patented technology

The invention relates to the technical field of fibers, and discloses an ultrahigh-moisture-absorption anti-static polyester fiber and a preparation method thereof. The preparation method comprises the following steps: carrying out nucleophilic substitution reaction on 1, 2-benzisothiazolin-3-one and methacryloyl chloride to obtain modified benzisothiazolinone; the preparation method comprises the following steps: carrying out nucleophilic substitution reaction on phosphonitrilic chloride trimer and allylamine, and then carrying out nucleophilic substitution reaction on the phosphonitrilic chloride trimer and melamine again to obtain modified cyclophosphazene; the preparation method comprises the following steps: mixing gamma-methacryloxypropyltrimethoxysilane with aluminum zinc oxide for reaction, and mixing the obtained modified aluminum zinc oxide with modified benzisothiazolinone and modified cyclophosphazene for copolymerization in the presence of an initiator to obtain a flame-retardant antibacterial additive; mixing the flame-retardant antibacterial additive, calcium carbonate and polyethylene glycol terephthalate, performing melt spinning, and performing acid treatment to obtain modified polyester fibers; dipping the modified polyester fiber in a finishing liquid containing modified chitosan to obtain the ultrahigh-moisture-absorption anti-static polyester fiber.

The invention discloses a quaternized chitosan benzisothiazolinone derivative as well as a preparation method and application of the quaternized chitosan benzisothiazolinone derivative in efficient antibacterial performance. The derivative has a structure as shown in a formula 1. The preparation method comprises the following steps: reacting chitosan with glycidyl trimethyl ammonium chloride at 60-100 DEG C for 6-48 hours to obtain a product 1, namely hydroxypropyl trimethyl ammonium chloride chitosan (HACC); the preparation method comprises the following steps: reacting 1, 2-benzisothiazolin-3-one with sodium chloroacetate at the temperature of 110-140 DEG C for 12-36 hours to obtain a product 2: 2-(3-carbonyl benzo [d] isothiazole-2-(3H)-yl) acetic acid (BITCOOH); and reacting the product 1 with the product 2 under a neutral condition for 12-48 hours to obtain the quaternized chitosan benzisothiazolinone derivative (HACCBIT). The derivative has a broad-spectrum antibacterial property, and has a killing effect on a plurality of bacteria, such as staphylococcus aureus, escherichia coli, salmonella salmonella salmonella, lactobacillus paracasei, lysinibacillus sphaericus, acinetobacter lwoffii and the like, and the derivative can be used for killing a plurality of bacteria, such as the staphylococcus aureus, the escherichia coli, the salmonella salmonella salmonella, the lactobacillus paracasei, the lysinibacillus sphaericus, the acinetobacter lwoffii and the like.

The invention belongs to the technical field of high polymer materials, and discloses a corrosion-resistant buried polyolefin drainage pipe and a preparation method thereof.The corrosion-resistant buried polyolefin drainage pipe is prepared from, by mass, 100-120 parts of high-density polyethylene, 20-30 parts of ABS resin, 5-10 parts of plasticizer, 10-15 parts of modified boron nitride, 0.5-2 parts of composite flame retardant, 0.1-0.5 part of antioxidant, 3-5 parts of calcium stearate and 1-3 parts of PE wax; the modified boron nitride is a triazine derivative which is grafted on the surface of hexagonal boron nitride and contains a plurality of benzisothiazolinone units; the composite flame retardant is compounded by a phosphorus-containing Schiff base flame retardant and DOPO according to the mass ratio of 1: (2-4); the high-density polyethylene is used as a matrix, the modified boron nitride is added, so that the corrosion resistance of the material is improved, the phosphorus-containing Schiff base flame retardant is compounded with DOPO, the flame retardance of the material is improved, and meanwhile, the dosage of DOPO is reduced.

The invention provides an antibacterial polyurethane acrylate film material embedded with N-substituted benzisothiazolinone and alkenyl functionalized quaternary phosphonium salt, and belongs to the field of organic antibacterial coatings. N-substituted alkenyl of benzisothiazolinone is functionalized, tri (4-methoxyphenyl) phosphine alkenyl is functionalized, and the antibacterial polyurethane acrylate film material is prepared. Double bonds are introduced into a benzisothiazolinone structural unit and a tri (4-methoxyphenyl) phosphine structural unit, N-substituted benzisothiazolinone (NIT) and tri (4-methoxyphenyl) (nonyl-8-ene-1-yl) phosphonium bromide (TPC9) are grafted into a polyurethane acrylate main chain at the same time, and by means of the remarkable antibacterial activity of the NIT and the TPC9 on escherichia coli and staphylococcus aureus, the polyurethane acrylate can be used for preparing the antibacterial polyurethane acrylate. A broad-spectrum antibacterial material is prepared, and a corresponding antibacterial coating can be used for modifying the surface of a base material.

The present disclosure is generally directed to a preservative composition including a cycloaliphatic polyetheramine and 1,2-benzisothiazolin-3-one ("BIT"). The preservative composition may include a cycloaliphatic polyetheramine and BIT present at a weight ratio of 100:1 to 1:10.

The invention discloses an antibacterial antifouling agent as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out chemical grafting on an amino terephthalic acid compound by adopting benzisothiazolinone to prepare a functional ligand; and carrying out a reaction on a metal salt and the functional ligand to prepare the antibacterial antifouling agent. The antibacterial antifouling agent disclosed by the invention shows broad-spectrum antibacterial activity on gram-negative bacteria and gram-positive bacteria, and has anti-algae performance and good biocompatibility; meanwhile, the antibacterial and antifouling agent is compounded into water-based acrylic resin, the obtained coating still has excellent antibacterial and anti-algae performance, the ligand engineering strategy effectively breaks through the bottleneck that traditional MOFs ligands are insufficient in antibacterial activity, and an innovative path is provided for developing long-acting, synergistic and practical MOF-based antibacterial and antifouling materials.

The invention belongs to the technical field of building materials, and discloses a special emulsion for large-particle-size high-air-permeability soft porcelain and a preparation method and application thereof, and the emulsion comprises a seed phase, a core emulsion phase, a hard-shell pre-emulsion phase, an initiation system and a post-treatment auxiliary agent; the core emulsion phase comprises deionized water, 2-ethylhexyl acrylate, glycidyl methacrylate, a toughening aid, ethyl phosphate methacrylate and an OP-10 emulsifier; the toughening aid is a polyether-polyester block copolymer; the post-treatment auxiliary agent comprises an antibacterial flame retardant, an organic silicon defoaming agent and ammonia water, the antibacterial flame retardant is a benzisothiazolinone derivative containing phosphorus and nitrogen, performance complementation is achieved through the layered design of a core-shell structure, and meanwhile the stability and adhesive force are improved by means of the reactive emulsifier and the functional monomer; in addition, the polyether polyester block type reactive toughening aid and the phosphorus and nitrogen-containing benzisothiazolinone derivative antibacterial flame retardant are added, so that synergistic optimization of toughening, antibacterial and flame retardant is realized.

A beauty glue imitating natural stone texture belongs to the technical field of adhesives. The beauty glue imitating natural stone texture consists of α,ω-dihydroxy polydimethylsiloxane, modified nano calcium carbonate, polytrifluoropropyl methylsiloxane, fluorine-containing silane, adhesion promoter, fumed silica, catalyst, crosslinking agent, copper zirconium phosphate, 2-butyl-1,2-benzisothiazolin-3-one, and artificial marble color texture fixing agent. The obtained beauty glue has a tensile bonding strength of 3.27-3.64MPa, a surface dry time of 12-16min, a curing speed of 8.5-9.7mm / 24h, a tensile strength of 3.83-4.39MPa at 23°C, and 2.72-3.26MPa at -40°C. In terms of anti-fouling performance, the pollution width and pollution depth are both 0mm. When used on the surface of stone and aluminum plates, there is no pollution for 1, 3, and 6 months, and the mildew resistance level is 0 for 30-360 days.

The invention discloses easy-to-disperse diamond grinding fluid and a preparation method thereof, and relates to the technical field of grinding fluid. The easy-to-disperse diamond grinding fluid is prepared from the following raw materials in parts by weight: 1 to 20 parts of modified diamond micro powder, 40 to 80 parts of deionized water, 1 to 10 parts of polyethylene glycol 6000, 0.5 to 1.2 parts of sodium carboxymethyl cellulose, 1 to 20 parts of glycerol, 1 to 10 parts of triethanolamine, 0.3 to 0.7 part of sodium polyacrylate, 0.05 to 5 parts of 1, 2-benzisothiazolin-3-ketone and 1 to 10 parts of a modified silane coupling agent. According to the easy-to-disperse diamond grinding fluid, through the synergistic effect of the modified diamond micro powder and the modified silane coupling agent, the dispersity is excellent, and the stability is high; the formula is scientific, polyethylene glycol and other assistants are matched, precise process parameters and graded filtration are combined, the grinding efficiency is high, the surface smoothness of a workpiece is good, the antibacterial property and storage stability are good, and the application scene is wide.

The present invention relates to a composition containing (a) a guanidine and / or an unsubstituted guanidine salt, and (b) at least one further component selected from the group consisting of 5-chloro-2-methyl-4-isothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, 1, 2-benzisothiazolin-3-one, N-butyl-1, 2-benzisothiazolin-3-one, N-methyl-1, 2-benzisothiazolin-3-one, N-methyl-1, 2-benzisothiazolin-3-one, N-methyl-1, 2-benzisothiazolin-3-one, N-methyl-1, 2-benzisothiazolin-3-one, N-methyl-1, 2-benzisothiazolin-3-one, N-methyl-1, 2-benzisothiazolin-3-one, N-methyl-1, 2-benzisothiazolin-3-one, N-methyl-1, the cleaning agent is prepared from 2-benzisothiazolin-3-one, octyl isothiazolinone, bronopol, dibromo-nitrilopropionamide, dibromo-dicyanobutane, butyl carbamic acid iodopropynyl ester, aminomethyl propanol, aminoethyl propylene glycol, monoethanolamine, ethylhexylglycerin, hexylglycerin, 1, 2-pentanediol, 1, 2-hexanediol, 1, 2-heptanediol, 1, 2-octylene glycol, phenoxy ethanol and phenethyl alcohol. The cleaning agent is prepared from phenyl propanol, benzyl alcohol, isopropanol, ethylenediamine tetraacetic acid, (1-hydroxyethylidene) diphosphonic acid, 2-mercaptopyridine sodium oxide, 2-mercaptopyridine zinc oxide, o-phenylphenol, sorbic acid, benzoic acid, salicylic acid, lactic acid, citric acid and zinc. The invention also relates to an industrial product containing components (a) and (b), and to the use of said composition for the preservation of containers and for the preservation of industrial products. The invention also relates to the use of (a) a guanidine and / or an unsubstituted guanidine salt for improving the antimicrobial efficacy of one or more compounds selected from the group (b) described above.

The present invention provides a wear-resistant and antibacterial composite material for rubber stoppers and a preparation method thereof, which belongs to the technical field of rubber preparation; the preparation process thereof comprises the following steps: preparation of surface-modified carbon-coated silver particles; preparation of a composite antibacterial agent; intercalation modification of zirconium phosphate; preparation of a hydrophobic antibacterial rubber stopper wear-resistant coating; and preparation of a wear-resistant and antibacterial composite material. The N-substituted benzisothiazolinone compound synthesized by the present invention has good antibacterial activity, and the N-substituted benzisothiazolinone compound reacts chemically with active groups such as amino groups of 3-aminopropyltriethoxysilane on the surface-modified carbon-coated silver particles to achieve grafting to prepare a composite antibacterial agent, the composite antibacterial agent is used to prepare a rubber stopper, and the surface of the rubber stopper is sprayed with a hydrophobic antibacterial and wear-resistant coating, and the prepared composite material has good wear-resistant and antibacterial effects.

The invention provides a function regulator for a centralized liquid supply system, which comprises the following components in 100 parts by weight: 10-30 parts of composite bactericide, 10-25 parts of composite antirust agent, 20-40 parts of composite alcohol amine and 31-55 parts of water, wherein the composite bactericide comprises a bactericide A and a bactericide B, the bactericide A comprises at least one of 1, 3, 5-tris (2-ethoxyl)-hexahydro-triazine, benzisothiazolinone and N, N '-methylenedimorpholine, and the bactericide B comprises at least one of 1, 3, 5-tris (2-ethoxyl)-hexahydro-triazine, benzisothiazolinone and N, N'-methylenedimorpholine; and the bactericide B is prepared from at least one of n-butyl-1, 2-phenylisothiazolin-3-one and iodopropynyl butyl carbamate. According to the functional regulator provided by the invention, the content of each component of the functional regulator is controlled within the range, and specific components are selected and compounded into the composite bactericide, so that the obtained efficient functional regulator can be better used in a centralized liquid supply system, and the capability of inhibiting the performance reduction of the cutting fluid is remarkably improved; therefore, the service life of the cutting fluid is prolonged.

The invention relates to a process for preparing 1,2′-benzisothiazoline-3-one according to formula (I), comprising the following steps: (a) reacting a 2-halogenbenzonitrile compound of general formula (II) with a reaction mixture, containing: (i) alkaline sulphide and / or alkaline hydrogen sulphide and (ii) an alkyl halide compound, represented by general formula (III): R1X (III) for producing an intermediate product of general formula (IV), and (b) reacting the intermediate product of general formula (V) obtained in step (a) with a halogenating agent or an oxidant and subsequent reaction of the 2-(alkylsulfoxy)benzonitrile with an acid to form 1,2-benzisothiazoline-3-one as well as a halide compound of general formula (V) R1X (V).

The invention relates to aqueous benzisothiazoline-3-one dispersions of sodium-1,2-benzisothiazoline-3-one particles dispersed in water. The dispersions contain: (a) between 15 wt.-% and 35 wt.-% of sodium-1,2-benzisothiazoline-3-one; and (b) ad. 100 wt.-% of water having a content of sodium ion in the range from 4 wt.-% to 10 wt.-% with respect to water contained in the dispersion. The invention further relates to the use of the claimed dispersions for preserving water-based products of all types, in particular, cleaning and household products, plastics dispersions, paints, plasters, adhesives, sealing compounds, paper coating materials, textile softeners and sizing agents, washing raw materials, surfactants, polishing agents, spinning baths, cooling lubricants, leather treatment agents and silicone and bitumen emulsions.

The invention relates to the technical field of adhesives, and discloses an environment-friendly water-based adhesive. Comprising the following components in parts by weight: 50-70 parts of waterborne polyurethane resin, 10-15 parts of polyvinyl alcohol, 5-10 parts of acrylate copolymer emulsion, 3-7 parts of lauryl sodium sulfate, 20-30 parts of diisocyanate, 1-5 parts of a thickening agent, 0.5-1.5 parts of a preservative, 5-9 parts of an initiator, 3-6 parts of a modifier, 0.3-1 part of a flatting agent, 3-5 parts of a mildew preventive and 60-90 parts of deionized water. The thickening agent is carboxymethyl cellulose; the preservative is one of sodium benzoate, calcium propionate and benzisothiazolinone; the initiator is one of an ammonium persulfate solution and a potassium persulfate solution; the water is used as a solvent and is non-toxic, harmless and environment-friendly, and the thickening agent and the modifying agent are added, so that the adhesive is stable in performance, high in adhesive force, wide in application range, simple in preparation process and easy for industrial production.

The present invention relates to the field of sewage treatment technology, and more particularly to a long-lasting antibacterial deodorant for sewage and a preparation method thereof. The long-lasting antibacterial deodorant for sewage is prepared from raw materials comprising the following components in parts by weight: 0.2-0.3 parts of 1,2-benzisothiazolin-3-one, 0.3-0.5 parts of p-tert-amylphenol, 0.1-0.2 parts of methyl parahydroxybenzoate, 4-6 parts of activated carbon, 4-6 parts of modified sustained-release microspheres, 8-12 parts of a modified polymer, and 2-3 parts of modified lysozyme.

The invention discloses a plant-based water filtering material and a preparation method thereof, and relates to the technical field of filtering materials. When the plant-based water body filtering material is prepared, 4-(10, 15, 20-triphenyl porphyrin-5-yl) aniline sequentially reacts with acrylic acid-2, 3-epoxypropyl ester and zinc acetate to obtain an alkenyl porphyrin zinc complex; the preparation method comprises the following steps: reacting chitosan with an alkenyl porphyrin zinc complex to obtain modified chitosan; reacting the oxidized reed carbon with butyl trimethyl ammonium chloride to obtain modified reed carbon; preparing a spinning solution from polybutylene terephthalate, the modified chitosan and the modified reed carbon, and performing electrostatic spinning to obtain a fiber membrane; itaconic acid and alkenyl benzisothiazolinone are prepared into a finishing solution; and finishing the fiber membrane with the finishing liquid to obtain the plant-based water filtering material. The plant-based water filtering material prepared by the invention can adsorb and catalytically degrade organic dyes in wastewater and adsorb heavy metals, and also has an antibacterial effect.

This invention provides an antibacterial and antifungal TPE material, belonging to the field of thermoplastic elastomer technology. The antibacterial and antifungal TPE material of this invention comprises the following components: SEBS, PP, a plasticizer, modified nano-zinc oxide, N-n-butyl-1,2-benzisothiazolin-3-one, 4,5-dichloro-2-n-octyl-4-isothiazolin-3-one, an antioxidant, and zinc stearate; wherein the modified nano-zinc oxide is obtained by melt blending nano-zinc oxide with maleic anhydride-grafted SEBS, the mass ratio of the modified nano-zinc oxide to the maleic anhydride-grafted SEBS is (0.6-1.7):1, and the particle size of the nano-zinc oxide is 20-50 nm; the free acid content of the zinc stearate is 0.3%-0.5%. The antibacterial and antifungal TPE material of this invention possesses good antibacterial properties, antifungal properties, and tensile strength.

The invention relates to an efficient multifunctional cleaning agent for a medical endoscope and a preparation method of the efficient multifunctional cleaning agent, and belongs to the technical field of medical cleaning. The cleaning agent is prepared from isopropyl alcohol, glycerol, propylene glycol, TritonX-100, fatty alcohol-polyoxyethylene ether, mannitol, 4-FPBA, hydroxytyrosol, sodium formate, benzisothiazolinone, a multienzyme compound and deionized water according to a specific ratio. The preparation method comprises the steps of step-by-step dissolution, temperature-controlled mixing and low-temperature enzyme adding. The cleaning agent can effectively remove stubborn stains such as protein and fat on the surface of an endoscope (the removal rate is larger than or equal to 90%), the bacteriostasis rate on escherichia coli and staphylococcus aureus is larger than or equal to 99%, and corrosion to stainless steel, rubber and plastic materials is avoided. Experiments show that the enzyme activity retention rate of the multienzyme compound still reaches 80% or above after the multienzyme compound is stored for 2 years, and the technical problems that an existing cleaning agent is not thorough in decontamination, poor in antibacterial activity and capable of corroding equipment are solved.

The application relates to the fine chemical technology field and discloses a preparation method of 2-substituted-2,3-dihydro-4 H benzothiazine-4-ketone. The specific steps are as follows: 1,2-benzisothiazolin-3-ketone and carbonyl compound are used as raw materials, hydrogen iodide and ammonium iodide are used as important additives, one-step reaction is carried out in an organic solvent, and the target product can be obtained after purification. The method is simple in operation, high in yield and has potential application value.

The invention discloses an antibacterial polyvinylpyrrolidone composite coating and a preparation method thereof, and belongs to the technical field of antibacterial coatings, the antibacterial polyvinylpyrrolidone composite coating comprises the following raw materials: isophorone diisocyanate, dibutyltin dilaurate, polyether triol, hydroxyethyl acrylate, a reactive diluent, antibacterial modified polyvinylpyrrolidone and a photoinitiator 1173; wherein the antibacterial modified polyvinylpyrrolidone is prepared by the following steps: adding functionalized polyvinylpyrrolidone into deionized water, uniformly stirring, then adding methacryloyloxyethyl trimethyl ammonium chloride and a benzisothiazolinone derivative, stirring and mixing, then adding 4, 4 '-azo (4-cyanevaleric acid), simultaneously introducing nitrogen to remove air, and stirring and mixing to obtain the antibacterial modified polyvinylpyrrolidone. Heating to 70 DEG C, reacting for 6-7 hours, dialyzing after the reaction is completed, and freeze-drying to obtain the antibacterial modified polyvinylpyrrolidone. The composite coating prepared by the invention has excellent antibacterial performance and long-acting antibacterial effect at the same time.

The invention discloses an antibacterial polyurethane acrylate film material embedded with N-substituted benzisothiazolinone and N-substituted ciprofloxacin, and belongs to the field of organic antibacterial coatings. The preparation method comprises the following steps: respectively functionalizing N-substituted alkenyl of benzisothiazolinone and ciprofloxacin, introducing double bonds into a benzisothiazolinone structural unit and a ciprofloxacin structural unit, and simultaneously grafting an N-substituted alkenyl functionalized benzisothiazolinone derivative (NBT) and a ciprofloxacin derivative (NCP) into a polyurethane acrylate main chain, so as to obtain the high-molecular polymer. A broad-spectrum antibacterial material is prepared by utilizing the excellent antibacterial property of NBT on staphylococcus aureus and the excellent antibacterial property of NCP on escherichia coli, and a corresponding antibacterial coating can be used for modifying the surface of a base material.

The utility model belongs to the technical field of chemical production, and discloses a benzisothiazolinone zinc acrylate resin production device which comprises an intermediate reaction kettle, a distillation device, a drying device, a total reaction kettle and a filtering device which are sequentially communicated through a pipeline, a valve and a pump, each of the intermediate reaction kettle and the total reaction kettle is provided with a temperature control device, a stirring device, a temperature sensor and a nitrogen protection device, and the total reaction kettle is also provided with a pH sensor and a dropwise adding device. The device is reasonable in design, simple in structure, convenient to operate and easy for industrial production.

The invention discloses a preparation method of a water treatment agent and the water treatment agent. The preparation method adopts a one-step method for synthesis, and comprises the following steps: mixing polysuccinimide, benzisothiazolinone and alkali, and then adding a solvent for reaction to obtain the water treatment agent. The water treatment agent prepared by the preparation method disclosed by the invention has the effects of scale inhibition and sterilization at the same time, and the efficiency of the water treatment process is improved.

The invention discloses a process method for improving the yield of 1, 2-benzisothiazolin-3-one, which comprises the following steps: S1, injecting benzene metering equipment into a reaction kettle with a stirring mechanism, and then adding sodium diacid liquid and a catalyst into the reaction kettle; s2, adding thionyl chloride into the reaction kettle through metering equipment, heating, and carrying out acylating chlorination reaction; s3, after the acylating chlorination reaction is finished, cooling to normal temperature, then adding a proper amount of bromine into the reaction kettle through metering equipment, stirring and mixing through a stirring mechanism, and carrying out bromination reaction; s4, adding a proper amount of ammonia water into the reaction kettle through metering equipment, and stirring through a stirring mechanism to carry out cyclization reaction; and S5, after the reaction is finished, carrying out evaporation treatment until crystals are separated out. The method is suitable for industrial production, chlorine is not needed, compared with chlorine, bromine greatly reduces higher danger and difficulty in the operation process, and corrosivity to equipment is reduced.

This invention discloses a low-VOC environmentally friendly interior wall coating composition and its preparation method in the field of architectural coatings technology. The method involves mixing deionized water, diethylenetriamine-terminated hyperbranched polyglycerol-grafted polypropylene glycol diglycidyl ether star copolymer, and polyether-modified polysiloxane. Titanium dioxide, calcined kaolin, heavy calcium carbonate, and talc are then added and ground to obtain a pigment and filler slurry. Next, styrene-acrylic emulsion, acrylic emulsion, and a mixture containing N-(diaminoethyl)-aminopropylmethyldimethoxysilane-modified glycidyl methacrylate-polyetheramine-epoxy soybean oil ring-opening copolymer and methyl isobutyl ketone are added. After stirring, the pH is adjusted to 8.0-9.5 using an associative polyurethane thickener and aminomethylpropanol. Polyether-modified polysiloxane and benzisothiazolinone are then added, followed by degassing to obtain the final product. This coating has extremely low volatile organic compound content and exhibits excellent formaldehyde removal, scrub resistance, and dispersion stability.

The invention discloses a compound antibacterial and mildew-proof oriented strand board and a preparation method thereof, the antibacterial and mildew-proof oriented strand board comprises a core layer and a surface layer, and an adhesive layer of the surface layer comprises the following effective components in parts by weight: 10 parts of an adhesive and 0.001-0.0025 part of an antibacterial and mildew-proof agent. Wherein the main components of the compound antibacterial and mildew-proof agent are organic 1, 2-benzisothiazolin-3-ketone and a copper-zinc mixed system loaded montmorillonite mixture, the adhesive is an isocyanate adhesive, the antibacterial efficiency of the prepared antibacterial and mildew-proof oriented strand board can reach 99%, and the prepared compound antibacterial and mildew-proof oriented strand board is excellent in structural performance, good in anti-bacterial and mildew-proof performance and good in anti-bacterial and mildew-proof performance. The requirements of daily household life boards can be met.

The invention discloses a low-VOC (volatile organic compound) environment-friendly building coating and a preparation method thereof in the technical field of coatings, and the method comprises the following steps: firstly stirring and dissolving deionized water, hydroxyethyl cellulose and an ammonium polyacrylate dispersing agent, and then adding rutile titanium dioxide, diatomite and heavy calcium carbonate for dispersing; adding soap-free organic silicon acrylic emulsion, mixing, sequentially adding a VOC adsorbent based on a morpholine modified polymer, a nano photocatalytic composite material with a yolk-shell structure, a mineral oil-based defoaming agent, a benzisothiazolinone preservative and a zinc ion antibacterial agent, and stirring; and finally, adding the associated polyurethane thickener, adjusting the pH value, and filtering. The prepared coating is high in environmental protection property, can effectively adsorb and degrade volatile organic compounds, and has antibacterial and mildew-proof functions.

The invention provides a preparation method of corrosion-resistant, mildew-resistant and oxidation-resistant water-based carbon black color paste, and belongs to the technical field of preparation of water-based carbon black color paste. Comprising the following steps: S1, carbon black surface functionalization modification: weighing carbon black with the particle size of 2000-2500 meshes, dissolving the carbon black in deionized water, and carrying out ultrasonic treatment for 40-60 minutes to obtain a carbon black suspension; dropwise adding concentrated nitric acid with the mass fraction of 50%-68% into the carbon black suspension, and filtering to obtain modified carbon black; s2, preparation of a compound preservative: mixing 1, 2-benzisothiazolin-3-ketone and benzimidazole according to a mass ratio, so as to obtain the compound preservative; s3, color paste compounding preparation: taking the modified carbon black, a dispersing agent, a defoaming agent, a wetting agent, a lubricating agent, analytically pure DMF and deionized water in parts by weight, uniformly mixing, and then adding zirconium beads. The water-based carbon black color paste with good corrosion resistance, mildew resistance and oxidation resistance, high stability and good environmental protection property is prepared by carrying out surface modification on the carbon black and reasonably selecting and compounding various auxiliaries.

The present invention relates to the technical field of organic synthesis, and in particular to a method for rapidly preparing N-methylbenzisothiazolinone-1-oxide. At present, using p-benzisothiazolinone as a reaction raw material, benzisothiazolinone-1-oxide is synthesized by a non-direct oxidation method, and product yield is difficult to reach more than 80%. In view of the above problems, the present invention provides a method for rapidly preparing N-methylbenzisothiazolinone-1-oxide: at room temperature, 2-mercapto-N-methylbenzamide and N-chlorosuccinimide (NCS) are vigorously stirred in an organic solvent. After the reaction is completed, N-methylbenzisothiazolinone-1-oxide is obtained by concentration, extraction, and vacuum distillation. The inventive method has mild reaction conditions, short reaction time, high yield, and good application prospect.