144 results about "Thioketone" patented technology

The invention discloses an application of a thiazole thioketone compound in chemical copper plating and a chemical copper plating solution, and belongs to the technical field of chemical plating. The thiazole thioketone compound with the structure shown in the formula I and the nitrogen-containing heterocyclic compound are combined to be used for chemical copper plating, the deposition speed of the chemical copper plating solution can be increased, the chemical copper plating solution has excellent stability, meanwhile, the electroplating hole filling effect after chemical copper plating can be improved, and correspondingly, the prepared chemical copper plating solution has good bath solution stability, and the chemical copper plating solution can be applied to chemical copper plating. When the copper plating solution is applied to a chemical copper plating method, the deposition rate of chemical copper plating and the compactness of a plating layer can be effectively improved. # imgabs0 #

The invention discloses a biologically safe and degradable cerium-based tannic acid nano-enzyme as well as a preparation method and application thereof. The nano-enzyme can be administrated through a non-invasive nasal cavity. In an area with excessive ROS, thioketone on CeTA-k1tkP is destroyed, PEG is removed, hydrogen bonds of an amino acid sequence are allowed to form beta-sheet, the beta-sheet is accumulated at an inflammation part, and a fiber or network structure is formed. Meanwhile, CeTA-k1tkP shows enzyme-like capacity, ROS is effectively eliminated, inflammation is effectively relieved, and systemic immunosuppression is avoided at the same time. In an influenza A (Flu A) virus or Sendai virus (SeV) mediated viral pneumonia model, CeTA-k1tkP can generate responsive deformation in inflammatory lung tissues, so that the nano-enzyme effectively decomposes ROS (reactive oxygen species). In addition, the CeTA-k1tkP can relieve bacterial inflammation and reduce tissue damage in a mouse viral pneumonia model with secondary bacterial infection.

The invention discloses a preparation method of a 3-micron ultrathin lithium battery copper foil. The preparation method comprises the following steps: preparing a copper sulfate electrolyte; a wetting agent, a brightening agent and a high resistance agent are added into the copper sulfate electrolyte, the high resistance agent is at least one of thiazolidinethione, polyethyleneimine, 2-mercaptobenzimidazole and ethylene thiourea, and a mixed additive is formed; polishing and grinding a cathode roller by adopting a flying wing wheel, and carrying out electrolytic treatment on the mixed additive through the polished and ground cathode roller to obtain a first-stage copper foil; and the first-stage copper foil is placed in a nitrogen furnace to be subjected to annealing treatment, and the 3-micron ultrathin lithium battery copper foil is obtained. The invention aims to solve the technical problems that in the prior art, edge tearing, foil breaking, warping, dark appearance oxidation and the like are prone to occurring in the production process of the ultrathin copper foil, the tensile strength and the ductility are difficult to consider at the same time, and stable mass production of the 3-micron copper foil is still difficult.

The invention discloses a rare earth compound flocculant and a preparation method and application thereof.The rare earth compound flocculant is composed of a gluconic acid rare earth compound, a pyrithione rare earth compound and water, the content of the gluconic acid rare earth compound is 5-15 wt%, and the gluconic acid rare earth compound is prepared by reacting sodium gluconate with first chlorinated rare earth salt in water; the content of the pyrithione rare earth compound is 0.4-0.6 wt%, and the pyrithione rare earth compound is prepared by reacting sodium pyrithione with second chlorinated rare earth salt in water. According to the invention, rare earth ions have positive electricity, and show extremely strong coordination ability and high coordination number. Meanwhile, the surface of phaeodactylum tricornutum has electronegativity; therefore, when the rare earth ions are in contact with the phaeodactylum tricornutum, the rare earth ions and the phaeodactylum tricornutum can rapidly generate charge interaction, so that the phaeodactylum tricornutum is rapidly agglomerated and forms a lump, and then the lump

The invention discloses an application of an azacyclo-thioketone compound, and particularly relates to an application of the azacyclo-thioketone compound in preparation of a vulcanizing agent. The azacyclo-thioketone compound is stable in property, not only has a thiocarbonyl sulfur atom of a reaction center in a molecular structure, but also has atoms with electron donating capability, such as nitrogen, oxygen and sulfur, on a heterocyclic ring, and selective flotation separation of copper, lead, zinc and iron sulfide minerals can be realized. However, no report about using the azacyclo-thioketone compound as the oxidized ore vulcanizing agent exists at present.

The present disclosure is directed to a preservative composition comprising a linear polyetheramine having a molecular weight greater than 118 Daltons (Da) and at least one isothiazolinone, whereby this preservative composition may further comprise a pyrithione salt and / or a metal salt. Also disclosed is an aqueous industrial material comprising the preservative composition as well as a method for enhancing in-contaniner preservative performance of an aqueous industrial material using the preservative composition.

The invention discloses a slow-release temperature-controlled antifouling agent microsphere and a preparation method and application thereof, the method comprises the following steps: (1) mixing sodium alginate, copper pyrithione and a CaCl2 solution for reaction, freeze-drying, grinding and crushing to prepare intermediate product particles; and (2) mixing the intermediate product particles in the step (1) with a chitosan solution for reaction, then adding a glutaraldehyde solution for continuous reaction, and freeze-drying to obtain the antifouling agent microspheres. The sodium alginate and chitosan double-crosslinking preparation method adopted by the invention is novel, a double-layer drug-loading structure is constructed by virtue of the crosslinking effect of sodium alginate and calcium ions and the electrostatic interaction between anions and cations of sodium alginate and chitosan, and the thought is novel.

The invention provides an ovary-targeting ROS response type SS31 nano-particle and a preparation method and application thereof, and belongs to the field of biomedicine.The ovary-targeting ROS response type SS31 nano-particle is constructed by utilizing a porous metal organic framework to carry hyaluronic acid and utilizing an ROS response type thioketone linker to be combined with mitochondrial targeting peptide SS31, and the ovary-targeting ROS response type SS31 nano-particle is used for preparing the ovary-targeting ROS response type SS31 nano-particle. And the SS31 is targeted and delivered to the ovarian tissue. The nanoparticles target ovary and slowly release SS31 under the action of ROS, so that oxidative stress of oocytes and granular cells caused by female reproductive system diseases such as premature ovarian failure, polycystic ovarian syndrome and the like is reduced, and the mitochondrial function of the oocytes and the granular cells is improved; and a foundation is laid for the subsequent clinical treatment of diseases related to the mitochondrial dysfunction of the female reproductive system by using the SS31.

The invention relates to the field of biological medicine, in particular to a construction method of a novel marine source 4-hydroxybenzoxazole-2 (3H)-thioketone carrier based on a beta-cyclodextrin metal organic framework and application of the novel marine source 4-hydroxybenzoxazole-2 (3H)-thioketone carrier to antibacterial activity enhancement. According to the invention, the effect of 4-hydroxybenzoxazol-2 (3H)-thioketone (HBOT) on resisting escherichia coli and shigella flexneri is found. The result shows that the antibacterial diameter of the HBOT on shigella flexneri is 15.78 + / -0.67 mm, and the antibacterial diameter of the HBOT on escherichia coli is 10.81 + / -0.50 mm; the MIC of the free HBOT to shigella flexneri is 128 [mu] g / mL, and the MIC of the beta-CD-MOF loaded with the free HBOT is 64 [mu] g / mL, so that the beta-CD-MOF loaded with the free HBOT has the capability of enhancing the antibacterial performance.

The invention discloses a phenolic resin material as well as a preparation method and application thereof in 3D printing, and relates to the technical field of high polymer materials. When the phenolic resin material is prepared, hydroxylated carbon nanotubes react with isocyanate propyl triethoxy silane to prepare pre-modified carbon nanotubes, and then the pre-modified carbon nanotubes react with 2-chloroethyl triethoxy silane to prepare modified carbon nanotubes; the preparation method comprises the following steps: reacting vanillin with 5-amino-1, 2-dihydro-2-methyl-3H-1, 2, 4-triazole-3-thioketone and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide in sequence, so as to obtain pre-modified vanillin; reacting the pre-modified vanillin with divinyl disulfide to obtain modified vanillin; the modified vanillin, phenol and formaldehyde react to prepare modified phenolic resin, and then the modified phenolic resin reacts with the modified carbon nanotubes to prepare the phenolic resin material. The phenolic resin material prepared by the invention has good flame retardance, heat resistance, aging resistance, self-repairing property and mechanical property.

The invention belongs to the technical field of biological medicine, and particularly relates to application of zinc pyrithione in inhibition of NLRP3 inflammasome activation. The technical problem to be solved by the invention is to provide a new choice for treatment of NLRP3 inflammasome related diseases. The technical scheme of the invention is application of zinc pyrithione in preparation of an NLRP3 inflammasome inhibitor. The invention finds that the zinc pyrithione can inhibit the activation of NLRP3 inflammasomes, and shows a good inhibition effect in mouse and human cells; zinc pyrithione is expected to become a candidate drug for treating NLRP3 inflammasome related diseases.

The invention provides a preparation method and device of prothioconazole. The preparation method comprises the following steps: carrying out Grignard reaction on o-chlorobenzyl chloride and magnesium powder in a mixed solvent of toluene and 2-methyltetrahydrofuran; the method comprises the following steps: carrying out Grignard addition reaction on a Grignard reagent and 2-chloro-1-(1-chlorocyclopropyl) ethanone; the preparation method comprises the following steps: carrying out substitution reaction on 1-chloro-2-(1-chlorocyclopropyl)-3-(2-chlorphenyl) propanol and hydrazine hydrate in an alcohol solvent; the preparation method comprises the following steps: carrying out ring closing reaction on 2-(1-chlorocyclopropyl)-1-(2-chlorphenyl)-3-hydrazino-2-alcohol, a formaldehyde solution, a sodium thiocyanate solution and a sodium hydrogen sulfate solution; the preparation method comprises the following steps: carrying out oxidation reaction on 2-(2-chlorocyclopropyl)-3-(2-chlorphenyl)-2-hydroxypropyl)-1, 2, 4-triazolidine-3-thioketone, air and inorganic alkali, so as to obtain prothioconazole. The method can improve the efficiency of the oxidation reaction and the yield and purity of prothioconazole, and is more suitable for industrial production of prothioconazole.

The invention belongs to the technical field of batteries, and particularly relates to an electrolyte and a preparation method thereof, and a secondary battery. The electrolyte comprises a main lithium salt, an auxiliary lithium salt, a main solvent, a film-forming additive, an ionic liquid and a reducing additive, wherein the reducing additive contains at least one functional group of cyano group, aldehyde group, thioether group and thioketone group; the ionic liquid comprises at least one of pyrroles, imidazoles, piperidines, quaternary ammonium salts, morpholines and phosphorus onium salts. After the ionic liquid and the reducing additive are added into the electrolyte, a stable interface layer can be formed on the surface of an electrode, so that direct contact between the electrolyte and an electrode material is prevented, side reactions are reduced, the high-voltage and high-temperature working stability of the battery is improved, and the service life of the battery is prolonged. The high-temperature cycle life and the safety of the battery can be obviously improved. The electrolyte can be applied to stable circulation at a high temperature of 60 DEG C or above.

The present invention discloses a near-infrared photosensitizer-based nanotherapeutic agent, its preparation method, and application. The near-infrared photosensitizer-based nanotherapeutic agent comprises a protein and a near-infrared prodrug bound to a hydrophobic cavity of the protein. The near-infrared prodrug comprises a near-infrared photosensitizer connected to a cupric sulfide bond and a chemotherapy drug bound to the near-infrared photosensitizer connected to the cupric sulfide bond via a thioketone bond. The near-infrared photosensitizer-based nanotherapeutic agent provided by the present invention significantly improves the solubility and bioavailability of the chemotherapy drug and the near-infrared photosensitizer, achieves tumor targeting and selectivity, thereby increasing the drug accumulation at the tumor site, improving the therapeutic effect, and reducing toxic side effects. This solves the problems of existing near-infrared fluorescent dyes, which have limited targeting and selectivity and low therapeutic effect.

The present invention discloses a preparation method of an improved tin-based perovskite thin film and its application. The preparation method of the present invention includes: preparing a hole transport layer on a cleaned conductive glass; preparing a precursor solution containing a cyclic thione compound and a tin-based perovskite material; spin-coating the precursor solution, generating a perovskite thin film in one step using an anti-solvent, and annealing to obtain a tin-based perovskite thin film. A class of cyclic thione compounds is introduced into the coating precursor solution in the present invention. This class of compounds can effectively coordinate with tin ions, thereby significantly slowing down the crystallization rate of the tin-based perovskite material, obtaining a smooth, dense and surface defect-passivated tin-based perovskite thin film. The tin-based perovskite solar cell prepared using this thin film has significantly improved photoelectric conversion performance, stability and process repeatability, and the highest photoelectric conversion efficiency exceeds 12%.

The present invention discloses a preparation method of thiazolidine-4-thione derivatives, which comprises the following steps: (1) mixing an isothiocyanate or its derivative, a sulfur ylide, an additive and an organic solvent, and reacting at 20-90 °C for 12-48 h under an air atmosphere; (2) diluting the material obtained in step (1) with ethyl acetate and washing with water, and separating to obtain an organic phase; (3) subjecting the above organic phase to drying, filtration, concentration and column chromatography or thin-layer chromatography in sequence to obtain thiazolidine-4-thione derivatives. The present invention can construct tetra-substituted thiazolidine-4-thione derivatives, can efficiently synthesize thiazolidine-4-thione derivatives containing trifluoromethyl, the raw materials used are easily available, the yield is high, the reaction conditions are mild, the reaction time is short, the substrate range is wide, the reaction specificity is strong, and the post-treatment is simple.

The Invention relates to a method Method for making a ruthenium catalyst comprising the steps of - Providing an aromatic dithiol substituted on adjacent aromatic carbon atoms with thiol groups, wherein in a first step an aromatic compound substituted with two leaving groups on adjacent aromatic carbon atoms are reacted with alkali trithiocarbonate to obtain an aromatic benzodithiole-thione, which in a subsequent step is reacted / hydrolysed with a base; - providing a zinc dithiolate compound by reacting the aromatic dithiol with a zinc carboxylate in an organic solvent; Reacting the zinc dithiolate compound with a ruthenium compound wherein X1 and X2 are, independently of each other, are anionic ligands and are the same or different; L and L2 are, independently of each other, neutral electron donor ligands and are the same or different; Ar is an aromatic group which may be substituted and that can be bridged with L, if L is an alkoxy group; - Obtaining a ruthenium catalyst of formula 4 or 4a, wherein R1 to R4 are, independently of each other, are selected from hydrogen, halogen, alkyl, aryl, or R.1 with R3, R3 with R4 or R2 with R4 are forming together an aliphatic or aromatic ring.

The present application relates to the technical field of copper-clad plate preparation, and particularly relates to a halogen-free flame-retardant BT resin-based copper-clad plate and a preparation method thereof. The present application adds 3,4-dihydroxybenzaldehyde, triethylamine, 7-chloro-1,3-dihydro-5-phenyl-2H-1,4-benzodiazepine-2-thione and ethyl acetate to prepare an antibacterial monomer. Then, the Zn-MOF material, the antibacterial monomer and 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide are used to prepare a flame retardant. Finally, the cyanate ester resin, the bismaleimide resin, the epoxy resin, the flame retardant, the solvent, the filler and the curing agent are added to prepare a resin glue solution. The glass fiber cloth is immersed in the resin glue solution, and then high-temperature curing, copper foil lamination and laminated molding are performed to prepare a finished product. The finished product prepared by the present application has good flame retardance and antibacterial property, and therefore has a wide application prospect in the technical field of copper-clad plate preparation.

The invention discloses a composition containing a turmeric analogue and application of the composition in an insecticide. The structural formula of the turmeric analogue is (E)-3-((1H-indole-3-yl) methylene)-5-((E)-4-mercaptobenzylidene)-1-methylpiperidine-4-thioketone. The turmeric analogue is synthesized through multi-step reaction, including aldehyde acylation, cyclization, thiolation reaction and condensation reaction. Insecticidal experiments show that the composition has good inhibitory activity on beet armyworms and can be used as a potential pesticide for preventing and treating beet armyworms.

The application discloses a preparation method of metal and alloy nanoclusters, which comprises the following steps: S1, weighing a certain amount of N-heterocyclic-2-thione ligand and metal salt, dissolving in a proper amount of solvent, fully stirring, and uniformly mixing to obtain a corresponding metal complex; S2, continuously stirring, observing color change, and continuously reacting for a period of time to obtain a crude product; and S3, slowly evaporating in the dark to obtain a single crystal of the metal and alloy nanoclusters; and the application provides a simple, high-yield and good-crystallinity method for preparing metal and alloy nanoclusters by using N-heterocyclic-2-thione organic ligand.

The invention discloses a sealant with bacteriostatic and mildew-proof functions for a metal bottle cap and a preparation method of the sealant, and belongs to the technical field of sealant preparation. The sealant provided by the invention is prepared from the following raw material components in percentage by mass: 40.0 to 55.0 percent of an auxiliary agent A, 0.5 to 3.0 percent of an auxiliary agent B, 2.0 to 4.0 percent of zinc stearate, 1.0 to 3.0 percent of titanium dioxide, 1.0 to 5.0 percent of ground calcium carbonate, 0.5 to 2.5 percent of an anti-blocking agent and 39.0 to 55.0 percent of polyvinyl chloride resin, the auxiliary agent A is prepared from at least two of dioctyl terephthalate, epoxidized soybean oil, trimellitic anhydride and cyclohexane 1, 2-diisononyl diformate; the auxiliary agent B is obtained by mixing and grinding zinc oxide, metal silver, zirconium phosphate, zinc pyrithione and coconut oil fatty acid diacetamide. According to the invention, the sealant is prepared by compounding multi-component food-grade antibacterial mildew-proof active components, so that the prepared sealant is ensured to reach the first-grade standard of ASTM G21-15 Determination of Antifungal Factor of Synthetic High Polymer Materials, meanwhile, the risk that the sealant is mildewed when being used in canned food is reduced, and the quality of the product is improved.

The present disclosure relates to nucleotide and nucleoside therapeutic compositions and uses in the treatment of infectious diseases, viral infections, and cancer, wherein the base of the nucleotide or nucleoside contains at least one thiol, thione, or thioether.

This invention discloses a photoactivated nanoparticle-based drug delivery material for immunoadjuvants, its preparation method, and its applications. The drug delivery material is constructed from photosensitizer monomers, crosslinking monomers, and immunoadjuvant prodrug monomers within a confined space of a nanoemulsion via a copper-free click polymerization reaction to form crosslinked polymer nanoparticles. The nanoparticle size is controllable, and the composition is precisely defined. Under physiological conditions, the drug delivery material exhibits good colloidal stability and high drug loading. Upon near-infrared light irradiation, the generated ROS can cleave the thioketone bonds, causing the nanoparticles to depolymerize and achieving photo-triggered, controllable release of the immunoadjuvant. Under photodynamic action, this drug delivery material efficiently generates reactive oxygen species to induce immunogenic cell death in tumor cells. Simultaneously, the released immunoadjuvant activates the TLR7 / 8 pathway, promotes dendritic cell maturation, and enhances the systemic anti-tumor immune response, thereby inhibiting the growth of tumors in situ and at distant sites, and reducing the risk of metastasis and recurrence.

The invention discloses a light-transmitting diaphragm, a preparation method thereof and a display device, which are used for simultaneously realizing antibacterial, antiviral and anti-fingerprint effects. The embodiment of the invention provides a light-transmitting membrane. The light-transmitting membrane comprises a substrate and a functional layer located on one side of the substrate. The functional layer comprises an anti-fingerprint layer and an antibacterial and antiviral layer which are arranged in a crossed manner in the direction parallel to the plane where the substrate is located; the antibacterial and antiviral layer comprises a polysiloxane group and an antibacterial and antiviral molecular group grafted to the polysiloxane group; the antibacterial and antiviral molecular group comprises a group formed by grafting thiabendazole and / or zinc pyrithione on polysiloxane; the anti-fingerprint layer comprises a polysiloxane group and an anti-fingerprint molecular group grafted to the polysiloxane group; the anti-fingerprint molecular group comprises a group formed by cross-linking polymerization reaction of a perfluoropolyether compound.

A 1-hydroxyalkyl-5-mercapto-1,2,4-triazole-3-carboxylic acid compound of formula (1): in which R1, R2, R3 and R4 are each independently selected from the group consisting of hydrogen, unsubstituted and substituted C1-C18 alkyl, unsubstituted and substituted C1-C18 alkenyl, unsubstituted and substituted C3-C18 cycloalkyl, unsubstituted and substituted C6-C14 aryl, unsubstituted and substituted C1-C13 heteroaryl, unsubstituted and substituted C7-C18 aralkyl, unsubstituted and substituted C8-C18 arylalkenyl, and unsubstituted and substituted C7-C18 aryloxyalkyl, and n is 1, 2, 3 or 4. A preparation method for the 1-hydroxyalkyl-5-mercapto-1,2,4-triazole-3-carboxylic acid compound is also provided, in which a hydroxyalkylhydrazine compound is used as a starting material, and undergoes a condensation reaction, an addition-cyclization reaction and dehydrogenation in sequence to obtain the 1-hydroxyalkyl-5-mercapto-1,2,4-triazole-3-carboxylic acid compound. An use of such compound in the preparation of a 2-hydroxyalkyl-1,2,4-triazole-3-thione compound is also provided.

The invention discloses low-copper environment-friendly self-polishing antifouling paint and a preparation method thereof. The antifouling paint is prepared from modified zinc acrylate resin, rosin, modified cuprous oxide, zinc pyrithione, zinc oxide, a reinforcing blending agent, a multifunctional additive, organic silicon resin, a solvent, barium sulfate, calcium carbonate, a dispersing agent, a flatting agent and chlorinated paraffin. The low-copper environment-friendly self-polishing antifouling paint disclosed by the invention has excellent antifouling efficiency, good adhesive force and stability and excellent mechanical durability and chemical resistance; the antifouling paint has wide application prospects in the fields of ocean engineering, port facilities, aquaculture net cages and the like, the maintenance cost can be remarkably reduced, and the service life of equipment is prolonged.

The invention relates to the technical field of lead-containing mineral wastewater treatment, in particular to a quinoline thioketone compound as well as a preparation method and application thereof. The invention provides a preparation method of a quinoline thioketone compound, and the quinoline thioketone compound prepared by the preparation method has good water phase response characteristics, and has ultrahigh selectivity and strong chelating precipitation capacity to Pb < 2 + > in a wide pH range.

The present invention discloses a sulfided olefin, a preparation method thereof, and an application thereof. The sulfided olefin is prepared by first mixing an olefin with a catalyst and then adding hydrogen sulfide and sulfur for reaction. The sulfided olefin provided by the present invention, and its preparation method and application, is prepared by slowly adding hydrogen sulfide and sulfur so that the hydrogen sulfide and sulfur entering the autoclave generate HS under the catalytic action of an organic amine. x ‑ The intermediate then undergoes a nucleophilic reaction with the carbon-carbon double bond on the olefin to generate a sulfide olefin, avoiding the direct reaction of sulfur and olefin. The present invention follows the nucleophilic mechanism and can theoretically avoid the generation of thioketones and mercaptans, so that the obtained sulfide olefin has the characteristics of light color, no odor, good extreme pressure performance, etc., and is particularly suitable for being added to lubricating oil as an extreme pressure agent.

The application belongs to the field of pharmaceutical chemical industry and particularly relates to a preparation method of enzalutamide. In the application, N-BOC-2-aminoisobutyramide is used as a starting material to form a ring with phenyl chlorothioformate to obtain 5,5-dimethyl-1-tert-butoxycarbonyl-2-thione imidazole-4-ketone, the obtained product is further subjected to nucleophilic substitution with 2-trifluoromethyl-4-bromobenzonitrile, is deprotected, and is subjected to nucleophilic substitution with 2-fluoro-4-bromobenzamide to obtain enzalutamide. The method uses N-BOC-2-aminoisobutyramide as a starting material, does not produce disubstituted impurities, has higher conversion rate, can obtain a product with high yield, and is more suitable for industrial amplification.

Provided is a carbon material dispersion which does not adversely affect other compounding components, is effective on a wide range of microorganisms such as bacteria, molds, and yeasts, and can maintain a high preservative / antibacterial effect and persistence thereof over a long period of time in any environment even if a small amount of the carbon material dispersion is used. Thus, dispersibility and storage stability can be highly considered. Also provided is a slurry composition for a negative electrode for a secondary battery, which uses the dispersion liquid, and which is suitable for the production of a battery / electrode such as a lithium ion battery. This carbon material dispersion liquid contains at least a carbon material containing carbon nanotubes, a dispersant, a preservative, and a liquid medium, and is characterized in that the preservative contains a triazine compound and at least one substance selected from the group A described below. Group A: an iodo-propargyl compound, a pyridine compound, a pyrithione compound, a hydroxyquinoline compound, a benzothiazole compound, an isothiazoline compound, and a dithiol compound.