30 results about "Phthalaldehyde" patented technology

The invention relates to the technical field of carbon material preparation, in particular to phenolic resin-based porous carbon and a preparation method thereof. The core of the preparation method of the phenolic resin-based porous carbon is that the mass ratio of phenolic aldehyde to phenolic aldehyde is optimized (1: (1-1.2)) to ensure sufficient crosslinking, and an amine catalyst is selected to reduce metal residues; meanwhile, terephthalaldehyde is introduced as a cross-linking accelerant, so that the bridging density and thermal stability of a resin network are effectively enhanced, and structural collapse is inhibited in subsequent carbonization; a sectional type carbonization process is further adopted, and the carbon skeleton is preserved by controlling the heating rate. According to the method, the carbonization yield is finally and successfully improved to 58% or above (improved by 15%-20% compared with that of a traditional method), the ash content is remarkably reduced (smaller than or equal to 0.2%), and an excellent material with a small mesoporous structure (the average pore diameter ranges from 2 nm to 10 nm) and a high specific surface area (larger than or equal to 1500 m < 2 > / g) is obtained.

The invention belongs to the technical field of disinfectants and discloses a high-level disinfectant and a preparation method thereof.The high-level disinfectant is prepared from, by mass, 0.1%-3% of phthalic dicarboxaldehyde, 0.2%-0.8% of chelating agent, 2%-5% of penetrating agent, 0.3%-2% of modified starch, 1%-2% of acrylic polymer, 0.1%-0.3% of single-chain quaternary ammonium salt, 0.1%-0.3% of double-chain quaternary ammonium salt, 0.4%-5% of corrosion inhibitor and the balance purified water. Modified starch and polyacrylic acid are fully dissolved in a high-temperature stage, molecular chains are fully expanded, more active sites are exposed, and then the temperature is gradually reduced, so that the molecular chains are orderly arranged, a compact and uniform network structure is formed, and effective release of bactericidal components is ensured. Meanwhile, the single-chain quaternary ammonium salt and the double-chain quaternary ammonium salt are complementary through membrane destruction and internal destruction respectively and have a synergistic effect with the o-phthalaldehyde, so that the sterilization effect is remarkably improved.

The invention belongs to the field of synthesis and preparation of Schiff base single crystals, and particularly relates to a p-xylylene-bis (4-amino-3-methylphenol) Schiff base single crystal and a preparation method thereof. The p-xylylene-bis (4-amino-3-methylphenol) Schiff base single crystal is a Schiff base formed by condensation of one molecule of p-phthalaldehyde and two molecules of 4-amino-3-methylphenol, and is a completely symmetrical bis-Schiff base, and the molecular structural formula of the p-xylylene-bis (4-amino-3-methylphenol) Schiff base single crystal is C22H20N2O2. The compound has good optical performance, can be used as a reaction intermediate product for synthesis of epoxy resin, and has important significance for research of high-thermal-conductivity epoxy resin; and the new single crystal can show excellent photoelectric properties, thermal stability or magnetism, and promotes the innovation of photoelectric devices or spintronics devices.

This invention relates to a method for preparing a β-cyclodextrin functionalized covalent organic framework composite material. The method involves an aldehyde-imine condensation reaction between the aldehyde groups on 2,3,4-trihydroxybenzaldehyde and p-phthalaldehyde and the amino group on hepta(6-amino-6-deoxy)betacyclodextrin to construct a β-CD-COF layer. This one-step method produces a β-cyclodextrin covalent organic framework composite material that exhibits excellent enrichment capacity for phosphopeptides, facilitating purification and extraction. It also shows promising application prospects in mass spectrometry detection and exosome separation.

The invention discloses an imine type COFs (Covalent Organic Frameworks) material for adsorbing gold as well as a preparation method and application thereof, and belongs to the technical field of precious metal recovery. The preparation method specifically comprises the following steps: (1) mixing terephthalaldehyde and acetic acid, and stirring to obtain a suspension; (2) mixing N1, N1 '-(1, 4-phenylene) bis (N1-(4-aminophenyl) benzene-1, 4-diamine and deionized water, dropwise adding the mixture into the suspension, and stirring the mixture; and (3) after the reaction is finished, collecting the generated precipitate, washing and drying to obtain the product. The Schiff base type COFs material with high thermal stability, high specific surface area and good crystallinity is synthesized by pre-activating an aldehyde monomer and an amine monomer with acetic acid in a room-temperature aqueous solution by utilizing the oxidation resistance characteristic of hydroxyl and the dynamic repairing capacity of an imine bond, and the adsorption material has the advantages of high adsorption capacity, high stability and high accuracy, and can be used for preparing the COFs material with high specific surface area and good crystallinity. And the preparation method is green, simple, convenient, universal and efficient, and realizes accurate adsorption of single metal ions under the coexistence of multiple metal ions.

The application belongs to the technical field of ship coating, and particularly relates to a self-repairing ship antifouling coating and a preparation method thereof. 2+ The preparation steps comprise the following steps: polyether amine and 1-pyrene butyric acid are reacted in an ethanol and water mixed solvent to obtain pyrene-based hyperbranched polyether amine; the pyrene-based hyperbranched polyether amine is reacted with p-phthalaldehyde modified by 2,6-diaminopyridine to form a dynamic polymer; a complex solution of ethylenediaminetetraacetic acid and Mg 2+ is added to the dynamic polymer to perform coordination complexation, and then a mixed solution is obtained; then, zinc oxide, BYK-333, Optifilm-400 and fumed silica are sequentially added to the mixed solution to obtain a multi-component mixed solution; after the multi-component mixed solution is dispersed, vacuum concentration is performed to obtain a self-repairing ship antifouling coating with a solid content of 45±5 wt%. The coating prepared by the method has good self-repairing and antifouling properties.

The application discloses a synthesis method of o-phthalaldehyde. O-xylene, a halogenated reagent and an organic solvent are mixed, and under ultraviolet light irradiation, a bromination product with different bromination degrees is generated by reaction; water is added into the reaction liquid, and the reaction is continuously carried out; after the reaction is completed, the organic solvent and water are removed by evaporation, and a crude ɑ, ɑ, ɑ', ɑ'-tetra-brominated o-xylene product is obtained; the crude product is recrystallized to obtain ɑ, ɑ, ɑ', ɑ'-tetra-brominated o-xylene product; and the ɑ, ɑ, ɑ', ɑ'-tetra-brominated o-xylene is hydrolyzed to obtain o-phthalaldehyde. The synthesis method optimizes the bromination and hydrolysis process, and by adding appropriate water in the o-xylene bromination process, the yield of the final product o-phthalaldehyde is improved.

The application provides a high-dispersibility water-based covalent organic framework soil modifier and application thereof in saline-alkali soil treatment. 2 The porous covalent organic framework material is synthesized from p-phthalaldehyde and sulfonated modified tri(4-aminophenyl)amine monomers; and a surfactant and / or a stabilizer are further added. The porous covalent organic framework material is synthesized from p-phthalaldehyde and sulfonated modified tri(4-aminophenyl)amine monomers, in-situ condensation is performed, and sulfonic acid groups are uniformly introduced, so that the hydrophilicity is improved, good adsorption capacity can be maintained in subsequent drip irrigation, and the nanoscale water dispersion liquid is prepared through subsequent high-pressure homogenization process.

The invention relates to a metal organic framework siloxane self-repairing antifouling composite material and a preparation method and application thereof.The preparation method comprises the steps that multiple kinds of siloxane containing amino are mixed to obtain mixed amino silane, terephthalaldehyde, absolute ethyl alcohol and diluted hydrochloric acid are added into the mixed amino silane, and heating is conducted to obtain a siloxane prepolymer solution; dropwise adding a silver nitrate solution into a trimesic acid solution to react to generate a silver ion organic framework material; and finally, adding the silver ion organic framework material into the siloxane prepolymer solution, uniformly dispersing, heating and curing to obtain the metal organic framework siloxane self-repairing antifouling composite material. The material has excellent self-repairing capability, when the material is broken, the self-healing of a damaged area can be realized under a mild condition, and the original mechanical property and barrier function of the material can be recovered; the introduction of the silver ion organic framework material not only plays a reinforcing role, but also endows the composite material with potential antibacterial performance, and widens the application prospect of the composite material in the antifouling field.

The invention discloses a lithium ion battery diaphragm, a preparation method and a battery thereof, the lithium ion battery diaphragm comprises a base membrane and a coating layer coated on the single side surface of the base membrane, the coating layer comprises the following raw materials by mass: 0.6%-2% of polymer particles, 38%-39.4% of a binder, 42%-54% of a solvent, and 6%-18% of a dispersant; the polymer particles are prepared by polymerizing 2, 4-diamino-6-chloropyrimidine or 2, 4-diamino-6-fluoropyrimidine and terephthalaldehyde, so that collaborative optimization of thermal stability and wettability of the diaphragm is realized, and meanwhile, the cycling stability and rate discharge performance of a battery are improved.

The invention discloses a gel polymer electrolyte membrane for a lithium battery as well as a preparation method and application thereof, and belongs to the field of polymer electrolyte. The preparation method provided by the invention comprises the following steps: putting amino-terminated polyethylene glycol and phthalic dicarboxaldehyde into inert gas to react to obtain a first prepolymer; adding tetraethylene glycol dimethacrylate and a photoinitiator into the first prepolymer, reacting to obtain a second prepolymer, adding lithium salt into the second prepolymer, and uniformly mixing to obtain precursor slurry; and carrying out film coating treatment on the precursor slurry, and sequentially carrying out ultraviolet curing treatment and standing treatment after film coating to obtain the gel polymer electrolyte membrane. According to the invention, a dynamic imine bond network is constructed through o-phthalaldehyde and double-end amino polyethylene glycol, a three-dimensional ion transmission channel is constructed by using an ether oxygen branch chain of tetraethylene glycol dimethacrylate, and self-repairing is realized by combining spontaneous reversible recombination of an imine bond under environmental humidity; and the high ionic conductivity of the polymer film is ensured to meet the high-frequency charging and discharging requirements.

The application discloses a sub-micron Py-TPA COF monocrystal wafer and a preparation method thereof, and belongs to the material field. The preparation method of the Py-TPA COF monocrystal wafer comprises the following steps: mixing tetra-(4-aminophenyl)pyrene, p-phthalaldehyde, mesitylene and an acetic acid solution, and performing a solvothermal reaction to obtain the Py-TPA COF monocrystal wafer. The preparation method has the advantages of short reaction time and high reaction yield, and the prepared sub-micron Py-TPA COF monocrystal wafer has uniform morphology and size.

The invention discloses a coordination europium ion-based post-modification COF fluorescent composite material as well as a preparation method and application thereof. The preparation method comprises the following steps: by taking terephthalaldehyde and melamine as construction elements, preparing a melamine covalent organic framework with abundant binding sites, embedding Eu < 3 + > ions into the melamine covalent organic framework through heating reflux by adopting a post-modification method, and then adding 2-thiophenoyl trifluoroacetone and a phenanthroline ligand for modification, thereby obtaining the Eu < 3 + > covalent organic framework. According to the present invention, the europium ion coordination-based post-modification COF fluorescent composite material with the antenna effect is constructed, after the fluorescent probe is prepared, the abundant Eu < 3 + > on the melamine-based covalent organic frame skeleton can be coordinated with more target to-be-detected substances TC, and the performance test characterization results show that the fluorescent probe has the characteristic that the fluorescent probe has the characteristic of the europium ion coordination-based post-modification COF fluorescent material; the fluorescent probe disclosed by the invention has high selectivity and high sensitivity on detection of tetracycline antibiotics, the detection limit is 1.36 mu mol / L, and the fluorescence intensity and the tetracycline concentration are in a good linear relationship.

The present invention relates to polysaccharide-based polymeric crosslinkers, polysaccharide-based biomaterials, preparation methods, and uses. In the present invention, the polysaccharide-based polymeric crosslinker is a polysaccharide-based polymeric crosslinker modified with ortho-phthalaldehyde groups, which does not rely on a synthetic hydrophilic polymer backbone or complex chemical synthesis processes. The polysaccharide-based polymeric crosslinker provided by the present invention, together with water-soluble small molecules or polymers containing one or more groups selected from the group consisting of primary amine, hydrazine, hydrazide, hydroxylamine, and mercapto groups, forms a two-component polysaccharide-based hydrogel material in an aqueous medium. This two-component polysaccharide-based hydrogel material has the advantages of being injectable, having low swelling, and having high tissue adhesion. Furthermore, the two-component polysaccharide-based hydrogel material provided by the present invention can be further fabricated into polysaccharide-based biomaterials in the form of membranes, powders, sponges, and other forms, and can be used as tissue adhesives, sealants, hemostats, tissue engineering materials, and other applications, demonstrating its potential for a wide range of biomedical applications.

The application relates to a water-based zinc ion battery composite negative electrode and a preparation method and application thereof. The preparation method comprises the following steps: (1) adding propionic acid into p-phthalaldehyde, indium acetate and pyrrole in sequence to obtain a first mixed solution; immersing a three-dimensional carbon skeleton into the first mixed solution; adding a second mixed solution into the first mixed solution drop by drop; and performing airtight reflux after dropwise addition is completed, so that POF@CC is obtained; (2) taking POF@CC as a working electrode, taking a saturated mercury electrode as a reference electrode, taking a zinc sheet as a counter electrode, composing a three-electrode deposition system, depositing zinc by using a constant current method, and obtaining a water-based zinc ion battery composite negative electrode. The application eliminates disordered sheet growth on a pure carbon substrate, induces single-fiber coaxial compact stacking of metal zinc according to a low surface energy crystal face, forms a novel three-dimensional electrode structure which is wrapped in multiple layers and is compact and coaxial, and constructs a high-performance water-based energy storage composite negative electrode which is free of dead zinc, corrosion-resistant and retains macroscopic flexibility.

The invention belongs to the field of protein hydrogel materials, and particularly relates to elastin-like and a preparation method and application of elastin-like hydrogel. According to the present invention, the two elastin-like proteins A and B having different amino acid sequences are utilized to form the cross-linked network through the isopeptide bond, such that the mechanical strength of the polymer hydrogel composed of the four-arm polyethylene glycol amine, 4-arm PEG-NH2 and the o-phthalaldehyde modified four-arm polyethylene glycol, 4-arm PEG-OPA can be effectively improved, the adhesion can be improved, and the cross-linked network can be used for the preparation of the polymer hydrogel, such that the cross-linked network can be formed through the cross-linked network, such that the cross-linked network can be used for the preparation of the polymer hydrogel, and the use amount of the polymer hydrogel can be reduced. The obtained elastin-like hydrogel has the advantages of strong wet tissue adhesion capacity, good biocompatibility, injectable use and the like, and is beneficial to application in the biomedical fields of hemostasis, tissue repair and the like.

This invention discloses an amino acid assay kit based on the o-phthalaldehyde (OPA) method, its preparation method, and its application. Belonging to the field of amino acid detection and analysis technology, it is used for rapid and accurate quantitative detection of amino acids in samples. The amino acid assay kit can not only measure the total amino acid content but also analyze specific amino acids and dipeptides such as alanine glutamine, meeting diverse analytical needs. This amino acid assay kit is suitable for batch testing and supports high-throughput laboratory applications. By optimizing the reagent formulation and operating procedures, this invention effectively simplifies the detection steps, improves detection sensitivity and specificity, and fills the gap in the market for OPA-based assay kits. This invention can be widely applied in nutrition, medicine, clinical diagnostics, and drug development, providing a convenient and efficient amino acid analysis tool for life science and medical research.

The application discloses a bimetallic catalyst for preparing o-phthalaldehyde by dimethyl phthalate hydrogenation and a preparation method thereof, and belongs to the field of catalyst preparation and application. The Ni-Fe / Al2O3-ZrO2 catalyst loaded with nickel and iron bimetal is prepared by taking alumina and zirconium dioxide as carriers, wherein n(Ni):n(Fe):n(Al):n(Zr) = 0.1:0.05:2:1. The Ni-Fe / Al2O3-ZrO2 catalyst is prepared by first preparing a Ni-Fe / Al2O3-ZrO2 catalyst precursor and then carrying out a reduction reaction in a hydrogen atmosphere. The Ni-Fe / Al2O3-ZrO2 catalyst of the application will not be deactivated due to carbon deposition and metal sintering in the high-temperature hydrogenation process, prolongs the service life of the catalyst, promotes the reaction of preparing o-phthalaldehyde by dimethyl phthalate hydrogenation, and has great competitive advantages.

The invention discloses a conjugated microporous polymer based on terephthalaldehyde, a preparation method and application, relates to the related technical field of seawater desalination materials and sewage purification materials, and aims to overcome the technical problem of low photothermal conversion efficiency in the prior art. According to the invention, an efficient, stable and low-cost solution can be provided for seawater desalination and sewage purification.

The invention discloses a method for detecting an impurity E in a granisetron hydrochloride injection by utilizing an HPLC (High Performance Liquid Chromatography) on-line derivatization method, belonging to the technical field of chemical engineering and pharmacy. According to the method, a high performance liquid chromatography method is adopted, an Ultimate AQ-C18 column is used as a chromatographic column, a mixed solution of a 0.1% phosphoric acid solution and acetonitrile is used as a mobile phase, and an o-phthalaldehyde solution is used as a derivatization reagent; quantitative detection of the impurity E in the granisetron hydrochloride injection is realized through specific instrument conditions, solution preparation and measurement recording steps. The method is simple and convenient to operate, strong in specificity, high in sensitivity and accuracy, good in linearity and capable of effectively detecting the quality of the granisetron hydrochloride injection product.

The application discloses a method for preparing o-phthalaldehyde from o-xylene. V2O5-TiO2 doped with metal elements is used as a catalyst, o-xylene and an oxygen-containing gas are reacted to obtain a mixed oxidation product containing o-phthalic anhydride, o-phthalic acid and phthalide; the mixed oxidation product is reacted with a reducing agent in a solvent, and o-phthalalcohol is obtained after separation; and the o-phthalalcohol is reacted with an oxidizing agent, and o-phthalaldehyde is obtained after separation. The application avoids the use of corrosive substances such as bromine or chlorine and nitric acid, has low requirements on equipment, is small in environmental pollution, and is high in overall yield of o-phthalaldehyde.

The invention discloses a preparation method of a self-repairing conductive composite material and a homogeneous integrated flexible capacitive pressure sensor, and a flexible robot, and relates to the technical field of self-repairing materials. Amino groups of amino-terminated polydimethylsiloxane and aldehyde groups from 4, 4 '-dithiodiacyldibenzaldehyde and 1, 4-phthalaldehyde are subjected to a Schiff base reaction to form imine bonds, and meanwhile, disulfide bonds are introduced through the 4, 4'-dithiodiacyldibenzaldehyde, so that a dynamic cross-linked network is established on the basis of the synergistic effect of the imine bonds and the disulfide bonds; according to the self-repairing conductive composite material disclosed by the invention, the self-repairing capability of the material is promoted, and effective self-repairing in various complex environments such as room temperature, freezing environment, heating environment, water and salt solution is realized; the problem of low signal repairing efficiency caused by the problem that healing kinetics of all layers of materials of a multi-layer heterostructure sensor are not matched can be solved.

The invention discloses a preparation method and application of an imine covalent organic framework material containing DBU-based ionic liquid. An aniline compound and a phthalaldehyde compound are used as raw materials for condensation reaction to obtain an imine bond covalent organic framework, and then DBU-based ionic liquid is connected to the covalent organic framework through a covalent bond to prepare the material. The material obtained by the invention has the advantages of uniformly distributed active sites, better stability, easiness in recovery and the like, and can show excellent catalytic performance when being applied to two different reactions of catalyzing cycloaddition of carbon dioxide and epoxypropane to synthesize propylene carbonate and catalyzing ester exchange of propylene carbonate and methanol to synthesize dimethyl carbonate.

The invention discloses a kind of adsorption material of aminoglycoside antibiotics and its preparation method and application.The preparation method of the adsorption material of the aminoglycoside antibiotics, comprises the following steps: step (1) mixes functional monomer, cross-linking agent, 1-butanol, 1,2-dichlorobenzene and acetic acid aqueous solution, through freeze-thaw cycle processing, sealing, heating, filtering, washing, obtains intermediate monomer;Step (2) under N2 atmosphere, intermediate monomer, magnetic template and 3-mercapto-2-butanone are mixed with benzenetrifluoromethane, stirring treatment, filtering, washing, elution template, vacuum drying, obtain adsorption material.In the present invention, by the aldehyde group of 2,5-divinyl-1,4-phthalaldehyde and the amino group of 1,3,5-tris (4-aminophenyl) benzene, then with 3-mercapto-2-butanone grafting, prepare the adsorption material of aminoglycoside antibiotics with high specific surface area, multi-bonding amount polar group, high selectivity and reusability.

Disclosed are methods for constructing conjugates. An amine-containing component and a thiol-containing component, in comparable mole ratios, react with an ortho-phthalaldehyde in one step, to generate a conjugate bearing a substituted or an unsubstituted 1-thio-isoindole structure in the presence of an additive. The method provides a platform for the efficient and practical constructions of bioactive modular motifs.

The present invention belongs to the field of fresh meat preservation technology, and in particular to a kind of high-efficiency antibacterial hydrogel packaging film based on cinnamaldehyde derivatives and its preparation method and application in chilled meat preservation. The present invention prepares a kind of cinnamaldehyde derivative (isophthalic acid acrolein) by raw materials such as 1,3-phthalaldehyde, malonic acid, pyridine, piperidine, ether, ethanol. When the obtained isophthalic acid acrolein is made into a hydrogel antibacterial packaging film and applied to chilled meat preservation, it shows a more excellent fresh-keeping effect than cinnamaldehyde hydrogel, and the shelf life of chilled meat can be effectively extended. Meanwhile, the method for preparing isophthalic acid acrolein of the present invention is mild in conditions and reaction by-products are few, meets the requirement of green manufacturing technology, and when making the antibacterial antiseptic preservation of hydrogel applied to chilled meat, it has the characteristics of easy operation and good fresh-keeping effect.

A covalent organic framework-silver nanoparticle hybrid modified electrode and a photoelectrochemical detection platform and application thereof, using tri(4-aminophenyl)amine and p-phthalaldehyde as monomers to grow covalent organic framework nanosheets in situ on an indium tin oxide substrate, and forming silver nanoparticle-covalent organic framework hybrids with enhanced photocatalytic activity by taking the covalent organic framework nanosheets as nanocarriers. Based on the photocatalytic activity regulation of the covalent organic framework nanosheets and the directional loading strategy of the silver nanoparticles, the amplification output of the photoelectric signal is realized. In order to realize the detection application of pesticides, the amino-modified aptamer is assembled on the surface of the silver nanoparticle-covalent organic framework hybrid, the specific interaction between the aptamer and the target is utilized, the selective capture of the pesticide acetamiprid is realized, the steric hindrance effect of the acetamiprid is utilized to reduce the photoelectric signal output of the electrode, and the high-sensitivity detection of the acetamiprid is realized. The technology improves the photoactivity of the covalent organic framework nanosheet, and provides a new idea for the simple, sensitive and accurate detection of pesticides. The application has potential application in the fields of food safety and environmental monitoring, and has important significance for human health and ecological environment protection.

The invention belongs to the technical field of biochemical engineering and enzyme engineering, and particularly relates to a graded porous spherical organic polymer immobilized enzyme nanoreactor and a preparation method thereof.The preparation method comprises the following steps that S1, paraphthaldehyde and m-phenylenediamine are weighed to serve as comonomers, and the comonomers and a structure-directing agent Pluronic F127 are jointly dissolved in methylbenzene to form an organic phase; s2, the organic phase is slowly added into a water phase composed of water and ethyl alcohol through stirring, and F127-methylbenzene-monomer composite micelles are formed; s3, adding acetic acid, and guiding the polymer to form spherical particles with a macroporous-mesoporous hierarchical structure by using the F127-toluene-monomer composite micelle as a soft template; s4, centrifuging, washing and drying to obtain a graded porous spherical polymer carrier; and S5, dispersing the graded porous spherical polymer carrier into a phosphate buffer solution of specific protease to obtain the graded porous spherical organic polymer immobilized enzyme nanoreactor.

Polymers containing isoindolin-1-one groups in the polymer backbone and synthesis thereof are described. The polymers can be alternating di-block copolymers prepared via polycondensation of di-o-phthalaldehyde (di-oPA) monomers and di-aniline monomers. The di-oPA monomers and di-aniline monomers forming the polymers can incorporate various types of designed structures to introduce different functional units in the polymers formed therefrom. Optionally, a branch monomer (e.g., tri-oPA or tri-aniline) or a crosslinking monomer (e.g., dithiols) can be used in the polymerization of di-oPA and di-aniline monomers to form branched or crosslinked polymers. The polymers have a high molecular weight (e.g., an M w of at least 2 kg / mol) and some polymers show thermal elasticity. The polymerization may be performed in DMF and catalyzed by pyridine / AcOH as catalyst at room temperature, allowing for metal catalyst-free, fast polymerization kinetics, simple operation, and mild conditions, providing polymers with high conversion (e.g., conversion of at least 90%), without side products.

The invention discloses an o-phthalaldehyde disinfectant grey dye scavenger which comprises the following raw materials in parts: 10-50 parts of a surfactant, 15-40 parts of a solvent, 5-10 parts of a bleaching agent, 1-5 parts of a buffering agent, 1-5 parts of a mildew preventive, 1-5 parts of an antistatic agent, 1-5 parts of a stabilizer, 1-5 parts of a regulator and 1-10 parts of water. The surfactant is prepared from sodium alkyl benzene sulfonate, polyoxyethylene ether and fatty alcohol-polyoxyethylene ether according to a ratio of (2-6): (1-5): (1-8), the solvent is prepared by mixing ethanol, isopropanol and benzene according to a ratio of (1-7): (1-8): (2-5), the bleaching agent is prepared by mixing hydrogen peroxide, sodium percarbonate and citric acid according to a ratio of (2-5): (1-7): (3-5), and the solvent is prepared by mixing ethanol, isopropanol and benzene according to a ratio of (1-7): (1-8). The buffer agent is prepared by mixing sodium dihydrogen phosphate, sodium carbonate and acetic acid according to the ratio of (1-3): (1-5): (4-9). The fabric cleaning agent is high in pertinence, is specially used for pollutants such as dyes and pigments, can quickly permeate and decompose dye molecules, does not damage fibers of fabrics, has relatively high dirt-removing power, can quickly decompose and remove stains caused by grey dyeing, color pollution and the like, and can be used for cleaning the fabrics. The cleanness of the fabric or the surface is recovered.