116 results about "Allylamine" patented technology

The application belongs to the technical field of lithium ion battery adhesives, and particularly relates to a hyperbranched network polyacrylic acid resin special for silicon-carbon negative electrodes, a preparation method and application thereof. The hyperbranched network polyacrylic acid resin special for silicon-carbon negative electrodes comprises, by mass fraction, 3-10 parts of water-based acrylic acid resin, 4-10 parts of monomer A, 2-6 parts of monomer B, 2-6 parts of monomer C, 60-80 parts of solvent, 0.1-0.2 parts of chain extender, 1-8 parts of crosslinking agent and 0.5-1 part of silane coupling agent. The monomer A is an acrylic ester monomer, the monomer B is an acrylamide monomer, the monomer C is at least one selected from an allyl amine monomer and an acrylonitrile monomer, and the chain extender is at least one selected from dodecyl mercaptan and 2-mercaptoethanol. The polyacrylic acid resin has high viscosity and peeling strength, and the prepared lithium ion battery negative electrode material has high discharge specific capacity and cycle performance.

The invention relates to a selective nanofiltration membrane as well as a preparation method and application thereof. The selective nanofiltration membrane comprises a support layer and a separation layer, the separation layer is obtained through interfacial polymerization of an oil-phase reactant and a water-phase reactant; the water-phase reactant comprises a negatively charged monomer and a positively charged monomer; the positively charged monomer comprises any one or a combination of at least two of polyvinylamine, polyethyleneimine, diethylenetriamine, water-soluble chitosan, quaternized polyethyleneimine, polyallylamine or triethylene tetramine. According to the method, monomers with different charges are added into a water phase, so that the nanofiltration membrane is wholly charged and neutral, the interception of sodium sulfate can be effectively reduced, the interception of antibiotics is increased, and the separation of the antibiotics and inorganic salts can be efficiently promoted.

A geopolymer precursor includes an alkaline reactive solid material containing aluminum, silicon, and oxygen, and a fluid loss control material having an ionic stability property that has a first value in water and a second value in a 3M solution of NaOH, wherein a ratio of the second value to the first value is in a range of 0.5 to 2.0. The fluid loss control material may be, or may include a crosslinked polymer, which may include a reaction product of one or more of acrylamide, 2-acrylamido-2-methyl propane sulfonic acid, N,N‑dimethylacrylamide, N,N‑diethylacrylamide, vinyl acetate, or another monomer, and a crosslinker including one or more of methylene bisacrylamide, triallyl amine, pentaerythritol allyl ether, triallyl-triazine-trione, or another material. The geopolymer precursor may include an activator, an alkaline solution having pH of at least about 9, or both.

The invention discloses an acrylate fluoride-free waterproof agent and a preparation method thereof. The fluoride-free waterproof agent is prepared from the following raw materials in parts by weight: 40-50 parts of a long-chain alkyl acrylate main monomer, 5-15 parts of a hard monomer, 1-5 parts of a first functional monomer, 5-25 parts of a second functional monomer, 2-5 parts of a surfactant, 1-2 parts of an initiator and 100-200 parts of water, and the number of carbon atoms of the long-chain alkyl acrylate main monomer is 8 or more. The hard monomer at least comprises methyl methacrylate, the first functional monomer is unsaturated organic acid containing double bonds, and the second functional monomer comprises an allylamine compound and at least one aromatic vinyl compound selected from vinyl phenol and vinyl aniline. The acrylate fluoride-free waterproof agent disclosed by the invention has an excellent waterproof effect and washing resistance, and also has a soft hand feeling.

The invention discloses a preparation method of plant-based polyester fibers, and relates to the technical field of high polymer materials. When the plant-based polyester fiber is prepared, firstly, phosphorus-modified dopamine is synthesized by taking dopamine hydrochloride and sodium hypophosphite as raw materials; carrying out copolymerization on the phosphorus-modified dopamine, terephthalic acid, ricinoleic acid and 1, 3-propylene glycol to prepare modified plant-based polyester; the preparation method comprises the following steps: synthesizing 2-bornyl-4, 6-dichloro-1, 3, 5-triazine from aminated carbon nanotubes, further synthesizing 2-bornyl-4, 6-dichloro-1, 3, 5-triazine from L-borneol and 2, 4, 6-trichloro-1, 3, 5-triazine, reacting the 2-bornyl-4, 6-dichloro-1, 3, 5-triazine with the aminated carbon nanotubes, and modifying with allylamine to obtain modified carbon nanotubes; finally, the modified plant-based polyester, the modified carbon nanotubes and auxiliaries are subjected to blending extrusion, melt spinning and treatment through copper nitrate and ascorbic acid, and the plant-based polyester fiber is prepared. The plant-based polyester fiber prepared by the invention has excellent antibacterial property, flame retardant property and mechanical property.

An aspect of the present application provides a CMP polishing liquid for polishing polysilicon, the CMP polishing liquid containing abrasive grains and a cationic polymer, the cationic polymer including at least one selected from the group consisting of a polymer A having a main chain including a nitrogen atom and a carbon atom and a hydroxyl group bonded to the carbon atom and an allylamine polymer B. Another aspect of the present application provides a polishing method including a step of polishing a polishing target material using the CMP polishing liquid.

The surface treatment agent is designed to improve adhesion to a coating film. This agent contains at least one metal component (A) selected from the group consisting of zirconium, titanium, and hafnium, as well as an alkyldiallylamine polymer (C). The metal component (A) has a content ranging from 10 ppm to 10,000 ppm by mass, in terms of metal element, relative to the total mass of the surface treatment agent. Furthermore, the alkyldiallylamine polymer (C) includes a segment with a heterocyclic structure represented by formula (1a) or (1b).

The application relates to a preparation method of a biosensor. The application relates to a preparation method of a portable pesticide detection biosensor based on acetylcholinesterase (AChE)@poly(allylamine hydrochloride)-hydrogen bond organic framework (PAH-HOF) and application of the biosensor in on-site rapid chlorpyrifos detection, and belongs to the technical field of biosensors. According to the method, AChE is combined with poly(allylamine hydrochloride) (PAH) to change the surface charge and promote self-assembly of the AChE and the hydrogen bond organic framework (HOF), so that an AChE@PAH-HOF composite material with high catalytic activity, high embedding rate and high stability is formed; then the material is integrated into a water-retaining glycerol-sodium alginate hydrogel (G-SA) matrix to construct a disc-shaped sensor. The sensor can be attached to the surface of plants and used for long-term in-situ monitoring of organophosphorus pesticides. In combination with an image processing algorithm, the system realizes accurate tracking of the chlorpyrifos degradation process on the surface of tomato plants, and the detection limit reaches 1 ng / mL. The application provides non-invasive and low-cost technical support for crop health management and sustainable precision agriculture.

The application discloses a kind of using cobalt catalyst by unreported double migration coupling strategy, realizes migration asymmetric nitrogen hetero Nozaki-Hiyama-Kishi (aza-NHK) reaction, and the selective preparation α-chiral (E)-allyl amine starting from simple and easy to obtain ortho halogen phenyl ethylene or corresponding E / Z-alkyl bromide or its mixture belongs to the field of organic chemistry and medicinal chemistry.The application under the action of metal cobalt source, ligand, organic additive, inorganic additive etc., makes cyclic sulfonamide and ortho alkenyl substituted aryl halide or alkenyl halide react in organic solvent, to obtain a series of polysubstituted olefins with excellent regioselectivity, stereoselectivity and good yield, which can be used as active drug molecules and important synthetic intermediates.The application uses cheap transition metal cobalt as catalyst, and uses ortho alkenyl substituted aryl iodine and cyclic sulfonamide as raw material, and the reaction condition is warm, simple operation, and good functional group compatibility.

The application discloses a kind of S-delta-substituted caprolactam chemical / enzyme series preparation method, and the specific preparation method is: 1-substituted high allyl amine occurs dynamic kinetic resolution reaction with acrylic ester compound under the catalysis of alkaline protease (special treatment) and generates S-acryl (1-substituted high allyl) amine, then the product occurs intramolecular olefin metathesis under the catalysis of Grubbs reagent and finally generates S-delta-substituted caprolactam shown in formula (1), wherein, substituent R is phenyl, halogenated phenyl or C2-C12 alkyl.The application has mild reaction condition, is conducive to reducing the equipment requirement of preparation process, improves synthesis safety and economy;Secondly, the reaction course of the method is simple, and single configuration S-delta-substituted caprolactam can be obtained by one-pot reaction, with very high atom economy.

The application discloses a platinum complex with controllable activity and a preparation method and application thereof, which is formed by coordination of vinyl siloxane, modified ligand and chloroplatinic acid; the modified ligand is prepared by reaction of maleic anhydride, allylamine and hydroxymethyl dimethyl phosphite. The application introduces amide groups and phosphite groups into the molecular chain of maleic anhydride, uses the groups as coordination compounds to coordinate with vinyl siloxane and platinum, and can improve the normal-temperature storage stability of the platinum catalyst while still keeping high catalytic activity of the platinum catalyst on the hydrosilylation reaction; when the platinum complex is used for catalyzing preparation of addition-type liquid silicone rubber, no inhibitor needs to be added, and the silicone rubber has good mechanical properties.

The application provides an antibacterial non-woven fabric material containing lipophilic monomers, a preparation method thereof, and a mask prepared from the material. The method comprises the following steps: A, preparing master batch: adding polypropylene granules, diallylamine, and a second monomer into a mixer in sequence, stirring and uniformly mixing to obtain master batch mixture, wherein the second monomer is a lipophilic monomer; then performing irradiation, extraction, and halogenation; B, mixing: adding the halogenated master batch, polypropylene granules, and additives into the mixer, stirring and uniformly mixing to obtain spinning mixture; C, extruding and melting; D, spinning; E, post-treatment and webbing; and F, winding and finishing to obtain finished non-woven fabric. The antibacterial non-woven fabric product has good bacteriostatic and sterilization effects and is safe and environmentally friendly.

The present invention provides a skin-friendly textile with antibacterial function and a preparation method thereof. The method comprises the following steps: A. sequentially adding ethanol, diallylamine, and a second monomer, stirring and mixing to form an impregnation solution, wherein the diallylamine is added in an amount of 30.0-60.0% by mass of the comonomer, and the second monomer is one of N,N-diethylacrylamide or N,N-dimethylacrylamide, or a mixture of the two; B. impregnation and finishing; C. drying; D. irradiation; E. extraction; and F. halogenation. The present invention is a textile with antibacterial function. The fiber fabric thereof not only serves as a textile but also as a carrier for antibacterial and sterilizing compounds, thereby achieving antibacterial and sterilizing purposes without causing secondary pollution to the environment, thereby achieving a safe and environmentally friendly antibacterial purpose.

The invention relates to a hybrid nanocarrier system comprising engineered metal nanoparticles (MeNP), a flavonoid (Fl), a Raman-active molecule (RAM), poly(allylamine hydrochloride) (PAH), genetic material (GM), and poly(styrene sulfonate) (PSS), designed for use in fields such as gene therapy, cancer treatment, chemotherapy, treatment of genetic diseases, innovative vaccine technologies, the production of innovative antibiotics for antibacterial and antimicrobial therapies, drug delivery, the dietary supplement market, Raman imaging systems, biotechnological applications, and the agrochemical industry.

The invention relates to the field of textile printing materials, and discloses a preparation method of water-based digital printing bottoming white adhesive cement, which comprises the following steps: mixing water-based acrylate emulsion with an auxiliary agent and a macromolecular quaternary ammonium salt color fixing agent to obtain a premix; mixing the premix with filling powder to obtain dispersion liquid; and adding a curing agent and a thickening agent into the dispersion liquid and mixing. The macromolecular quaternary ammonium salt color fixing agent is prepared by reacting an organic silicon modified allylamino phosphorus-containing bromine substituent and bis (dimethylamino) phosphoric acid hydrogenated cardanol ester; the organic silicon modified allylamine phosphorus-containing bromine substituent is prepared by preparing the allylamine phosphorus-containing bromine substituent from allylamine, phenyl dichlorophosphate and 2-bromoethylamine hydrobromide as raw materials and then reacting the allylamine phosphorus-containing bromine substituent with heptamethyltrisiloxane. The white rubber cement prepared by the preparation method is bright in color and clear in pattern, can be recycled and reused, and has the advantages that the white rubber cement is easy to prepare, the cost is low, and the application prospect is wide. The color fixing fastness, the flame-retardant and fire-proof performance, the net blocking prevention performance and the hand feeling comfort degree are good.

The application belongs to the technical field of layered composite film preparation, and provides an online coating high-barrier biaxially stretched polyethylene film and a preparation method and application thereof. First, polyethylene multilayer sheet is co-extruded and longitudinally stretched, and a to-be-coated base film is obtained through corona activation; then, nano clusters are constructed from phytic acid and zirconium salt, and a hybrid dispersion liquid is formed by introducing tannic acid, polyallylamine hydrochloride and epoxy silane; at the same time, sodium-based montmorillonite and colloidal silicon dioxide are compounded under the action of tannic acid and treated by silane to obtain a barrier dispersion liquid; the barrier dispersion liquid, polyvinyl alcohol, polyvinylpyrrolidone and polyhydric alcohol are prepared into an aqueous coating composition, which is coated on the base film online, dried and solidified, and then transversely stretched to obtain a film with stable oxygen and water vapor barrier properties and suitable for packaging applications.

The invention provides a method for modifying the surface of a polyarylether membrane by using ammonium polysulfonate zwitterions, which comprises the following steps: converting a chloromethylated polyarylether membrane into an unsaturated quaternary ammonium cationized polyarylether membrane by using N-alkyl-N, N-diallylamine, then taking chlorinated 3-(N-alkyl-N, N-diallylammonium) 1-propyl sulfonate as a grafting monomer, and carrying out grafting reaction on the unsaturated quaternary ammonium cationized polyarylether membrane to obtain the surface of the polyarylether membrane. The polyarylether membrane is characterized in that the polyarylether membrane is used as a substrate, and diunsaturated sulfonate is used as a grafting cross-linking agent to perform grafting cross-linking on the surface of the membrane, so that a polysulfobetaine chain is bonded and introduced, grafting cross-linking modification among macromolecular chains of the polyarylether membrane is realized, and the hydrophilicity, the water-retaining property, the biocompatibility and the antibacterial and antifouling functions of the surface of the polyarylether membrane are all remarkably improved.

The invention discloses a clay stabilizer for a polymer dry powder direct distribution variable-viscosity fracturing fluid. The clay stabilizer is prepared from quaternary ammonium salt, an alcohol amine compound and a polyamine compound as raw materials in a solvent. The quaternary ammonium salt is quaternary ammonium salt with the carbon chain length of C12-C18; the alcohol amine compound is selected from at least one of ethanolamine, dimethyl propanolamine, hydroxyethyl piperazine, piperidine, isopropanolamine, triisopropanolamine, aminomethyl propanolate, hydroxyethyl ammonium salt and the like; the polyamine compound is selected from any one of poly dimethyl diallyl ammonium chloride, polyquaternary ammonium salt, poly allylamine, polyurea, polybutanediamine, polyethyleneimine, polyethylene polyamine and a polyethyleneimine cross-linked substance. The clay stabilizer disclosed by the invention is particularly suitable for polymer dry powder direct distribution variable-viscosity fracturing fluid, the stability of clay can be remarkably improved, particularly, excellent inhibition performance can still be kept under high-temperature and high-salt conditions, stratum damage is reduced, and the application requirements in complex environments of oil fields are met.

The invention relates to a graphite-based high-temperature lubricant composition and a preparation method thereof, and belongs to the technical field of lubricants. The composition is prepared from the following components: 30 to 38 weight percent of graphite powder, 4.2 to 5.5 weight percent of interface modifier, 1.9 to 2.6 weight percent of thickening agent, 0.3 to 0.4 weight percent of defoaming agent, 0.12 to 0.17 weight percent of antirust agent and the balance of water, according to the interface modifier, 3-chloropropyltriethoxysilane and diallylamine are substituted to prepare an intermediate, then the intermediate, divinyltetramethyldisiloxane and bis (2-mercaptoethyl) thioether are subjected to an addition reaction to prepare a modified matrix, and finally, the modified matrix is subjected to quaternization treatment through 3-bromo-1-propanol. The introduction of the interface modifier overcomes the problems of dispersibility and surface adaptability of the water-based graphite lubricant, and provides key technical support for green manufacturing.

The utility model discloses an allylamine hydrochloride reactor, and belongs to the technical field of allylamine hydrochloride production. The reactor comprises a reaction kettle, the reaction kettle is provided with a stirring assembly and a discharging pipe, the reaction kettle is resistant to acid and alkali corrosion, a feeding port and the discharging pipe can bear large pressure, the discharging pipe is located below a kettle body of the reaction kettle, and distilled water is contained in the reaction kettle; the hydrogen chloride feeding tank is communicated with the reaction kettle; an allyl amine feeding tank, wherein the allyl amine feeding tank is communicated with the reaction kettle; the feeding pipeline comprises an opening and closing valve, and the feeding pipeline is communicated with the reaction kettle and the hydrogen chloride feeding tank as well as the reaction kettle and the allylamine feeding tank; and the PH meter is used for measuring the mixture in the reaction kettle. The technical problem that an existing allylamine hydrochloride reactor is low in production efficiency is solved.

The application discloses an allyl amine compound and a preparation method thereof. Under the condition of no water and no oxygen, MBH alcohol compound and tetra(dimethylamino)diboron are added into 1,4-dioxane, and after stirring reaction at 100 DEG C for 12 hours, a reaction solution is obtained, and the reaction solution is separated and purified to obtain the allyl amine compound. Compared with the prior art, the preparation method does not need the participation of a catalyst, the Lewis acidity of the reactant itself is used to realize dehydration coupling to construct a C-N bond, the reaction condition is relatively mild, the substrate universality is high, various kinds of MBH alcohol compounds modified by different functional groups can be subjected to allylation with high yield, and the application has potential application value in fine chemistry and industrial production.

The invention belongs to the technical field of organic synthesis, and particularly relates to a method for catalytically synthesizing a dibenzo [b, d] azepine compound by using an N-heterocyclic carbene oxazoline cyclic palladium compound. The invention aims to provide a novel synthesis method of a dibenzo [b, d] azepine compound, and particularly relates to a method for synthesizing the dibenzo [b, d] azepine compound by using a high-catalytic-activity N-heterocyclic carbene oxazoline cyclic palladium compound as a catalyst through a carbon-nitrogen / carbon-carbon bond cascade reaction. The 2, 2 '-dihalogenated biphenyl compound and an N-alkyl substituted allylamine compound are directly synthesized into the dibenzo [b, d] azepine compound in one step. The catalyst used in the invention has high catalytic activity, and the reaction has good compatibility of products and functional groups; the catalyst is easy to synthesize, and the raw materials of the 2, 2 '-dihalogenated biphenyl compound used in the synthesis route are cheap and easy to obtain.

The invention discloses a hydrophilic corrosion and scale inhibitor as well as a preparation method and application thereof, and belongs to the technical field of macromolecular water treatment. The hydrophilic corrosion and scale inhibitor has the following structure, in addition, the invention also provides a preparation method of the hydrophilic corrosion and scale inhibitor, which comprises the following steps: mixing sodium lignin sulfonate, formaldehyde and N-methylallylamine, and reacting under a heating condition; the preparation method of the corrosion and scale inhibitor comprises the following steps: firstly, adding 2, 3-epoxypropyl trimethyl ammonium chloride, reacting at 50-55 DEG C, heating to 80-90 DEG C, adding itaconic acid and maleamic acid, mixing, dropwise adding an initiator, and reacting at 80-90 DEG C to obtain the corrosion and scale inhibitor. The invention also provides application of the hydrophilic corrosion and scale inhibitor or the hydrophilic corrosion and scale inhibitor prepared by the preparation method in oil field water treatment. The hydrophilic corrosion and scale inhibitor provided by the invention can better realize corrosion and scaling.

In one aspect, provided is an etchant composition that is able to reduce etching nonuniformity. An aspect of the present disclosure relates to an etchant composition for etching of a layer to be etched that contains at least one metal. The etchant composition contains an etching inhibitor, an acid including at least a nitric acid, and water and has a pH of 1 or less. The etching inhibitor is at least one nitrogen-containing compound selected from the group consisting of polyalkyleneimine and a polymer having a constitutional unit derived from diallylamine.

The invention discloses a preparation method of photo-thermal dual-curing resin, which comprises the following steps: uniformly mixing epoxy resin and diallyl amine according to the molar ratio of epoxy group to amino group of 1: (0.1-0.9), and reacting to obtain diallyl epoxy resin containing double bonds; the diallyl epoxy resin containing the double bonds is photo-thermal dual-curing resin. The diallyl epoxy resin can be obtained only through physical mixing placement of raw materials or simple heating reaction, and addition of any auxiliaries and treatment processes is not needed. The used epoxy resin raw material is wide in selection and extremely easy to obtain, and the photo-thermal dual-curing resin can be prepared by selecting the epoxy resin and allyl amine according to performance requirements. The prepared composition can realize photo-thermal dual curing, the performance of the cured material can be arbitrarily blended according to different types and proportions of the selected epoxy resin, curing agent, thiol and the like, and the composition has good mechanical property and adhesive property.

The invention discloses a preparation method of an axially chiral allylamine compound, and relates to the technical field of organic synthesis. According to the method, in an organic solvent, aliphatic amine and (E)-2-(2-alkoxynaphthalene-1-yl)-3-aryl allyl benzoate react in the presence of a palladium catalyst, a chiral phosphorus ligand and BSA (Bovine Serum Albumin) to obtain a target product, namely the axially chiral allyl amine compound. The structures of the compounds are represented by 1H NMR, 13C NMR and HRMS and are confirmed. The invention provides a brand-new synthesis method of the axially chiral allylamine compound, the synthesis of the axially chiral allylamine compound is successfully realized by carrying out nucleophilic attack on the allylic palladium intermediate through the nitrogen nucleophilic reagent and directly carrying out asymmetric allylic substitution reaction, the reaction conditions are mild, the substrate applicability is wide, the yield is high, and the method is suitable for industrial production. The method has good application value and prospect.

The application provides an ultrasonic response piezoelectric ionic hydrogel and application thereof, and the hydrogel is formed by cross-linking and solidification of a precursor solution under ultraviolet irradiation; components of the precursor solution include a photosensitive polymer, an ionic polymer, a photoinitiator and a solvent; the photosensitive polymer includes any one or a combination of at least two of polyether F127 diacrylate, polyhydroxyethyl methacrylate, polyethylene glycol dimethyl acrylate, methacrylated gelatin or methacrylated collagen; and the ionic polymer includes any one or a combination of at least two of epsilon-polylysine, polyethyleneimine hydrochloride, polyallylamine hydrochloride, polyquaternary ammonium salt-10 or cationic guar gum. The application uses ultrasonic waves as an external remote driving signal to non-invasively and painlessly activate the piezoelectric ionic effect of the hydrogel, generate detectable periodic voltage and current signals in the hydrogel, and has excellent treatment effect on acne and infected wound repair.

The application discloses a process for preparing flame-retardant polyethylene plastic from waste polyethylene plastic, and relates to the technical field of high polymer materials. In the preparation of the flame-retardant polyethylene plastic, waste polyethylene is extruded and granulated to obtain polyethylene masterbatch; the polyethylene masterbatch is catalytically pyrolyzed, and then is reacted with potassium permanganate to obtain hydroxylated carbon nanotubes; the hydroxylated carbon nanotubes are reacted with 1-(chloro-methyl phosphonyl) ethylene, and then are reacted with (mercapto methyl) triethoxysilane to obtain modified carbon nanotubes; the polyethylene masterbatch is irradiation-grafted with 2-hydroxy-4-propenyl benzophenone and N,N-diethyl allylamine, and then is reacted with chloromethyl triethoxysilane to obtain modified polyethylene; the modified carbon nanotubes and the modified polyethylene are melt-extruded, and then are injection-molded to obtain flame-retardant polyethylene plastic after water treatment. The flame-retardant polyethylene plastic prepared by the application has good flame-retardant performance, antibacterial performance, tensile strength and anti-aging performance.

The invention relates to the technical field of research, development and manufacturing of functional films, and discloses an eleven-layer co-extruded film, a preparation process and application in aviation cables, and the preparation process specifically comprises the following steps: by taking heptamethyl hydrogen-containing POSS, diallylamine, diethyl phosphite and 10-undecenal as raw materials, carrying out hydrosilylation, Kabachnik-Fields and alkenyl epoxidation reaction to obtain the eleven-layer co-extruded film. The preparation method comprises the following steps: synthesizing a halogen-free reaction type phosphorus-POSS-nitrogen synergistic flame retardant, and carrying out covalent bond interaction on the halogen-free reaction type phosphorus-POSS-nitrogen synergistic flame retardant and amino-terminated functional groups in PA6 resin and PA66 resin through an epoxy-amino ring-opening reaction to prepare flame-retardant PA master batches; the flame-retardant PA master batch is used as a raw material of the eleven-layer co-extrusion film, and an eleven-layer co-extrusion blow molding process is adopted to prepare the eleven-layer co-extrusion film. The flame retardant property of the eleven-layer co-extrusion film is remarkably improved, and meanwhile, the beneficial technical effect of remarkably enhancing the high-temperature resistance of the eleven-layer co-extrusion film is achieved.

The invention discloses a PVC pipe with a stain-resistant coating and a preparation method of the PVC pipe, and belongs to the field of polymer pipes. A PVC pipe with a stain-resistant coating comprises a PVC pipe body and the stain-resistant coating wrapping the surface of the PVC pipe body, and the stain-resistant coating is prepared from, by weight, 13-22 parts of PVC resin, 5-10 parts of polytetrafluoroethylene modified polyurethane, 0.2-0.5 part of an anti-ultraviolet agent and 90-110 parts of a solvent; the polytetrafluoroethylene modified polyurethane is prepared from a PVC (Polyvinyl Chloride) emulsion, polytetrafluoroethylene micro powder and polyurethane acrylate, and the polytetrafluoroethylene micro powder is grafted with acrylic acid and allylamine. The coating has the advantages that the surface stain resistance of the PVC pipe is improved, and meanwhile, the adhesive force of the coating and the pipe is kept.