213 results about "Methacryloyl chloride" patented technology

The invention provides a preparation method for a molecular imprinting material and the molecular imprinting material prepared through the preparation method. The preparation method comprises the steps that silicon oxide is coated on the surfaces of magnetic ferroferric oxide nanometer particles, the magnetic ferroferric oxide nanometer particles are modified with gamma-(methacryloyl chloride) amino propyl trimethoxy silane to obtain magnetic ferroferric oxide nanometer particles with propenyl on the surfaces, the magnetic ferroferric oxide nanometer particles with the propenyl on the surfaces serve as carriers, estrogen receptors are simulated, functional monomers are optimized, a surface imprinting technology is adopted, and then the molecular imprinting material which can simultaneously identify seven kinds of environmental endocrine disrupting chemicals is prepared. According to the preparation method, the easy separation of a magnetic nanometer material, the good water solubility of a silicon oxide nanometer material, the specific recognition ability of molecular imprinting polymers and the surface imprinting technology are mutually combined, the preparation technology is simple, the conditions are mild, the prepared molecular imprinting material is large in adsorption capacity, fast to respond, high in magnetism, good in chemical stability and high in repeating utilization rate, and the problems that at present, multiple trace, steroid and phenol environmental endocrine disrupting chemicals are difficult to simultaneously identify, separate and enrich are solved.

The invention discloses a side-chain liquid crystal polymer with aggregation-induced emission property and a preparation method thereof. A substituted cyano-distyrene compound is generated by using a substituent-containing para benzaldehyde derivative and hydroxybenzyl cyanide through Knoevenagel reaction, so that, on one hand, the substituted cyano-distyrene compound can react with polymerizable double bond-containing acids such as saturated dihalide, methacrylic acid or acrylic acid in sequence to generate a polymerizable monomer and a side-chain liquid crystal polymer with a flexible spacer is obtained through free radical polymerization; and on the other hand, the substituted cyano-distyrene compound can directly react with polymerizable double bond-containing acyl chloride such as methacryloyl chloride or acryloyl chloride to generate the polymerizable monomer and a side-chain liquid crystal polymer free of the flexible spacer is obtained through free radical polymerization. A fluorescent chromogenic group and a liquid crystal unit are combined into one; the method is simple in synthesis and easy to purify, and the obtained polymer has an obvious aggregation-induced emission effect, has excellent liquid crystal property and has a good application prospect.

The present invention relates to a rosin or rosin derivative long chain flexible monomer preparation method, which comprises the following steps: 1) placing rosin or a rosin derivative in dichloromethane or tetrahydrofuran, adding an acyl chlorination reagent, carrying out a reaction for 1-12 h at a temperature of 0-85 DEG C to synthesize rosin acyl chloride or rosin derivative acyl chloride; 2) mixing the rosin acyl chloride or the rosin derivative acyl chloride and a long chain aliphatic diol according to a certain molar ratio, dissolving in tetrahydrofuran, adding a catalyst, carrying out a reaction for 5-24 h at a temperature of 50-80 DEG C to synthesize rosin long chain aliphatic diol monoester or rosin derivative long chain aliphatic diol monoester, and carrying out precipitation purification in a specific solvent; and (3) mixing the purified rosin long chain aliphatic diol monoester or the purified rosin derivative long chain aliphatic diol monoester and acryloyl chloride or methacryloyl chloride according to a certain molar ratio, adding a catalyst and a polymerization inhibitor hydroquinone, and carrying out a reaction for 4-24 h at a temperature of -10-10 DEG C to synthesize a rosin long chain flexible monomer or a rosin derivative long chain flexible monomer, wherein the synthesized rosin long chain flexible monomer or the synthesized rosin derivative long chain flexible monomer can be subjected to a free radical polymerization reaction.

The invention discloses a phosphorous and nitrogenous UV-cured flame retardant and a preparation method thereof. According to the invention, phosphorus and nitrogen compound precursor with high phosphorus content is synthesized by using raw materials of alcamines compound, aldehydes compound, and dialkyl phosphite through Kabachnik-Fields reaction; a light-cured monomer containing phosphorus and nitrogen elements is prepared through substitution/esterification reaction of the precursor with (methyl) acryloyl chloride or (methyl) propenoic acid by utilizing active hydroxy of the precursor; the monomer is used as reaction type flame retardant to be applied to light-cured resin matrix, and can curve rapidly with matrix under UV lighting to form a flame-retarded light-cured material which not only has good flame retardant property, but also can reduce the transfer and loss of the flame retardant in the using process. Compared with a conventional additive flame retardant, the compatibility of the flame retardant and the macromolecule matrix is also increased, and the duration of the flame retardant property of the material can be guaranteed.

The invention discloses a phosphorus-nitrogen type flame retardant containing an active double bond as well as a preparation method and an application thereof. The preparation method comprises the following steps: carrying out Mannich reaction on 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, p-aminophenol and paraformaldehyde in the presence of a solvent to obtain a product and washing the product with methanol to obtain a phenolic intermediate compound; reacting the phenolic intermediate compound with methacryloyl chloride in the presence of a solvent and an acid binding agent, filtering to remove acid binding agent salts generated in the reaction to obtain a crude product, purifying the crude product by virtue of washing, carrying out spin evaporation and drying to obtain the phosphorus-nitrogen type flame retardant containing the active double bond. The phosphorus-nitrogen type flame retardant containing the active double bond can be applied in preparation of flame-retardant polymer materials. The raw materials are easily available and the cost is low; the reaction conditions are mild and the yield is high; the purification and separation operations of the product are simple and the phosphorus-nitrogen type flame retardant is easily industrialized and complies with environmental requirements; the flame-retardant effect is good and the application range is wide.

The invention belongs to the technical field of a functional high molecular material, in particular to a thermometer polymer gel microballoon and there preparation method thereof. The invention directly starts from the raw material of methacrylic chloride and isopropyl amino, and uses the techniques of organic synthesis, free radical polymerization, chemical crosslink, etc. to prepare the thermometer polymer gel microballoon. The microballoon has the even shaping and the good ball forming state, thereby overcoming the difficulties that the traditional thermometer polymer gel microballoon has bigger size, more copolymerization components, higher preparation cost, slow response speed, etc. The preparation method of the invention has simple and convenient technique, rich raw material source, low cost, and high input-output ratio. The polymer gel microballoon size is about 10 to 150 nm, and the gel of polymer microballoon is in even distribution, and the polymer gel microballoon has good thermometer property and response speed, thereby being used in the fields of drug release, thermometer control, etc.

The invention provides a preparation method of bovine serum albumin molecular surface imprinted polymer microspheres. The method comprises the following steps: 1, adding methacryloyl chloride into an acetone solution containing crosslinked polyvinyl alcohol microspheres to form modified microspheres; 2, combining acryloyloxyethyl trimethyl ammonium chloride with bovine serum albumin molecules in a neutral aqueous solution by virtue of strong electrostatic interactions so as to form a host-guest complex; 3, carrying out a crosslinking copolymerization reaction on the metacrylate modified microspheres, the host-guest complex, a crosslinking agent N,N'-methylene bisacrylamide and an initiating agent so as to achieve the surface imprinting of the bovine serum albumin molecules; and 4, repeatedly flushing the imprinted microspheres with sodium chloride and then flushing the imprinted microspheres with distilled water so as to obtain the bovine serum albumin molecular surface imprinted polymer microspheres with a large quantity of template molecular imprinted cavities retained on the surfaces. According to the method, the protein imprinting is carried out on the basis of the electrostatic interactions between the template protein and each functional monomer; and a new molecular design thought for developing a protein molecular imprinting technology is provided. Thus, the method provided by the invention has a positive reference value in the protein separation and purification field.

The present invention relates to fluorine and silicon containing copolymer resin and paint. The composition includes fluorinated compound in 1-30 wt%, silane 2-8 wt% and alkenyl containing compound 62-97 wt%. The fluorinated compound is acrylic fluoro resin obtained through the reaction of fluorinated alcohol and acryloyl chloride or acrylic anhydride; the silane is one containing alkenyl group or containing carbon functional group with oxygen atom; and the alkenyl containing compound methacrylic acid, methacrylate, vinyl carboxylate and alkenyl containing benzene compound. The present invention has the advantages of fluorinated acrylic acid copolymer and silicon containing acrylate copolymer paint and the paint is excellent single component paint.

The invention discloses biodegradable temperature response hydrogel and a preparation method thereof. The method comprises the following steps of: (1) reacting terminal hydroxyl group of polycaprolactone dihydric alcohol with crylic acid (or methacrylic acid) to prepare polycaprolactone macromolecule cross-linking agent; (2) reacting singe terminal hydroxyl group of polyethylene glycol monomethylether and acryloyl chloride (or methacryloylchloride) to prepare a polyethylene glycol monomethyl ether macromolecule monomer; and (3) copolymerizing the polycaprolactone macromolecule cross-linking agent, the polyethylene glycol monomethyl ether macromolecule monomer and N-isopropylamide according to a certain ratio to obtain the biodegradable temperature response hydrogel. Compared with the traditional hydrogel, the hydrogel disclosed by the invention has the advantages of being rapid in response speed, good in mechanical strength, biodegradable and good in biocompatibility; therefore, the hydrogel is hopeful to be applied in the drug slow release field.

The invention discloses a preparation method of a heavy metal adsorbent with a natural high molecular chitosan grafting modified amidoxime group. The preparation method comprises the following basic steps: dissolving chitosan (CTS) used as a raw material in a 1% (mass percent) glacial acetic acid solution, stirring over night, slowly and dropwisely adding alpha-methacryloyl chloride, reacting for some time, regulating the pH value to neutral, performing alcohol washing, and drying to obtain C=C containing modified chitosan (MAc-CTS); and polymerizing the modified chitosan with acrylonitrile, and performing oximation through hydroxylamine hydrochloride to obtain the MAc-CTS/AO adsorbent. The amidoxime group-containing chitosan modified adsorbent prepared by the invention has favorable mercury and cadmium ion adsorption effect, and the adsorption capacities of the adsorbent with respect to mercury and cadmium are respectively up to 418.7mg/g and 93.0mg/g.

The invention belongs to the field of functional polymer materials and in particular relates to a method for preparing a multi-responsive block copolymer containing azopyridine. The preparation method is characterized by synthesizing azopyridine with photo-responsivity through a diazo coupling reaction and then reacting azopyridine with 6-chloro-1-hexanol and methacryloyl chloride in sequence to prepare a methacrylate monomer containing an azopyridine group; then synthesizing a methacrylic acid-N,N-(dimethylamino)ethyl monomer into a macroinitiator through atom transfer radial polymerization (ATRP) under the protection of an inert gas nitrogen or argon, wherein the block has temperature sensitivity and temperature responsivity; and finally synthesizing the macroinitiator with an azopyridine monomer to prepare the multi-responsive block copolymer containing azopyridine through ATRP. The method has the following advantages that the block copolymer simultaneously has photo-responsivity, pH sensitivity and temperature sensitivity and can be self-assembled into various aggregation morphologies such as stable nano micelle and vesicles in water, so the block copolymer is widely applied in the fields such as drug controlled release carriers, smart photo switches, photo sensors and nano devices; the synthesis method is simple and practical; the raw materials can be industrially produced; and the method has good popularization and application values.

The invention discloses a water-based polyacrylate antibacterial emulsion, which is obtained by reaction of the following raw materials: 3-6 g of an isothiazolinone group-containing monomer, 24-30 g of an acrylate monomer, 0.5-1g of nonylphenol polyoxyethylene (4) ether ammonium sulfate, 7.0-8.0g of ammonium persulfate and 60-80g of deionized water. The isothiazolinone group-containing monomer isobtained by reaction of 1, 2-benzisothiazolin-3-one, 2-bromoethanol and methacryloyl chloride. The invention also discloses a preparation method of the water-based polyacrylate antibacterial emulsion.The water-based polyacrylate emulsion obtained by pre-emulsification, polymerization, curing, post-treatment and other steps on the isothiazolinone group-containing monomer and the acrylate monomer by taking water as a solvent is uniform in dispersion, good in particle size distribution, stable in compatibility and good in compatibility, and meanwhile, has good antibacterial property and mold resistance, the antibacterial rate is greater than 99.9%, and the mold-proof grade can reach 0 grade; the water-based polyacrylate emulsion can be directly used as a bactericide in water-based paint, andcan also be compounded with common emulsions for water-based paint, like polyacrylic acid, polyurethane or epoxy resin, so that the additive amount of the bactericide is greatly reduced.

The invention discloses a polymerizable type thioxanthone visible light initiator containing acrylate or methacrylate and a preparation method of the polymerizable type thioxanthone visible light initiator. Thioxanthone containing an aromatic amino group can be directly reacted with various types of halogenated alcohol to generate thioxanthone containing an aliphatic hydroxyl group; the thioxanthone containing the aromatic amino group can also be reacted with 4-benzoyloxy benzyl chloride, and then is subjected to alcoholysis to generate thioxanthone containing a phenolic hydroxyl group; the thioxanthone containing the phenolic hydroxyl group can be reacted with the various types of halogenated alcohol to generate thioxanthone containing the aliphatic hydroxyl group; then the thioxanthone containing the phenolic hydroxyl group or the thioxanthone containing the aliphatic hydroxyl group is reacted with acryloyl chloride or methacryloyl chloride to form the polymerizable type thioxanthone visible light initiator containing an acrylate structure or a methacrylate structure. The compound disclosed by the invention has very good compatibility with a light curing system; in an application process, any additive does not need to be added, and any auxiliary agent does not need to be added; the polymerizable type thioxanthone visible light initiator is high in initiation efficiency, green and environment-friendly and low in energy consumption, meets the requirements of green chemistry, and has a wide application prospect in the field of visible light curing.

The invention relates to the technical field of preparation of polymer materials, and in particular relates to a preparation method of an antibacterial self-cleaning fabric. A silver crystal seed solution is prepared from a silver nitrate solution, a trisodium citrate aqueous solution and a sodium borohydride solution, polyvinylpyrrolidone, L-ascorbic acid and the like are added into the silver crystal seed solution, an activated reducing solution is prepared by diluting, a pure cotton fabric is cut and treated as a base fabric to obtain a modified cotton fabric, ethyl orthosilicate and absolute ethanol are mixed, diluted hydrochloric acid is added to obtain a silica sol, absolute ethanol, 5,5-dimethylhydantoin and methacryloyl chloride are mixed and ultrasonically dispersed to obtain an antibacterial monomer suspension, the antibacterial monomer suspension is added to ethyl titanate to obtain a mixed solution, and acetic acid and the silica sol are added dropwise to the mixed solution, ichloromethane is used to dilute to obtain an antibacterial spraying agent, and the antibacterial spraying agent is sprayed by an atomizer to the surface of the modified cotton fabric to obtain theantibacterial self-cleaning fabric, and the application prospect is broad.

The invention belongs to a cationic polymer flocculant, and concretely relates to a preparation method of a novel water-soluble cationic monomer, and a novel preparation method of hydrophobically modified cationic polyacrylamide based on the novel water-soluble cationic monomer. The preparation method of the hydrophobically modified cationic polyacrylamide comprises the following steps: preparing dimethylaminoethyl methacrylate from methacrylic chloride and dimethylamino ethanol, reacting dimethylaminoethyl methacrylate with long chain bromoalkane to obtain the novel water-soluble cationic monomer, and preparing the hydrophobically modified cationic polyacrylamide through adopting a hydrophobic association micropolyphase aqueous solution copolymerization technology. The preparation method of the hydrophobically modified cationic polyacrylamide does not need other surfactants, allows random micro-block structure distributed hydrophobic groups to be successfully introduced to display a unique solution property, and has good industrial prospect.

The invention relates to chemical synthesis high molecular material, namely hydroxypropyl methacrylate (HPMA). A chemical name of the HPMA is a {poly [N-(2-hydroxypropyl) methacrylamide-group-N-(3-amino propyl) methacrylamide]} polymer. The invention further discloses a method of combining of materials and dexamethasone. 1-amino-2-propyl alcohol, gly-gly and methacryloyl chloride are taken as starting raw materials and combine an HPMA-dexamethasone (DEX) polymer through steps, such as replacing, polymerization and condensation, and the HPMA-DEX polymer is used for improving effect environment of the dexamethasone, and reduces side effect to achieve the best curative effect.

The invention discloses a cyclophosphazene compound and synthesizing method as photographic flame-proof material, which comprises the following parts: cyclophosphazene, p-hydroxybenzoic acid, potassium acrylate, potassium methyl acrylate, acryloyl chloride or methyl acryloyl chloride.

The invention discloses a method for preparing methylacrylic acid-2, 2, 2-ethyl trifluoroacetate. The method adopts methylacrylic acid as the raw material, and the methylacrylic acid is reacted with thionyl chloride under the existence of DMF and polymerization retarder; the obtained methacrylic chloride is reacted with 2, 2, 2-ethyl trifluoroacetate under the existence of catalytic agent, then the target product of the invention-methylacrylic acid-2, 2, 2-ethyl trifluoroacetate-can be collected from the reaction product, the purity rate reaches more than 98 percent (GC), and the production rate is more than 95 percent. The reaction process condition of the invention is bland, the operation is secure and simple, the raw material sources are extensive, and the price is low; compared with the prior technology, the invention overcomes the deficiencies that the raw material price is expensive, the preservation and the transportation of the raw material are difficult, the reaction system request is harsh, the equipment corrosiveness is strong, the product quality is steady, the purity rate is good, the production rate is high, and the invention is suitable for large-scale industrialization production.

The invention relates to a rapid hydrophilic polyurethane light-curing adhesive, a preparation method and a curing method, wherein the mass ratio of pentaerythritol to anisaldehyde is 1:(0.9-1.2); pentaerythritol acetal is synthesized by pentaerythritol and aromatic aldehyde; polyethylene glycol and pentaerythritol acetal are commonly used as a dihydric alcohol unit; the mass ratio of HDI (Hexamethylene Diisocyanate) to the dihydric alcohol unit is (1:1.0) to (1:100); in the dihydric alcohol unit, the mass ratio of pentaerythritol acetal to polyethylene glycol is 1:(0.5-100); and the mass ratio of methacryloyl chloride to pentaerythritol is 1:(1-40). The rapid hydrophilic polyurethane light-curing adhesive disclosed by the invention has the advantages of being simple in reaction condition, short in response time, better in thermostability of formed gel, higher in mechanical strength, good in biocompatibility, and is applied to the fields, such as tissue filling and repairing, biological scaffolds, scar formation prevention, adhesion prevention, biogel, rapid forming materials or three-dimensional printing materials and the like.

This invention discloses a kind of the azo monomer has intramolecularly push-and-pull electron structure and its polymer three order nonlinear optics material, after azo-coupler reaction of substituent aniline and N, N- ethyl hydroxyl ethyl aniline gaining the azo midbody, and reacts with (methyl) chlorine chloride then gains the crylic acid ester monomer with the functionality azo base group, and using the atom free radical polymerization (ATRP) method get the azo side chain type polymer whose molecule chain forms the push-and-pull electron structure. The polymer has good three order nonlinear optics functions and fairly good film function.

A one-pot method for directly preparing thiodiglycol dimethyl acrylate belongs to the technical field of optical resin synthesis and includes steps of adding thiodiglycol into dichloromethane for mixing and dissolving, adding powdery potassium carbonate for intense mixing to generate turbid liquid, dropping methacryloyl chloride/ dichloromethane mixed liquor by means of an ice-water bath method, placing reaction liquid into a centrifuge for centrifugal separation after reaction is completed until complete removing of potassium chloride and unreacted potassium carbonate, supernatant is washed for two to three times and dried by calcium chloride prior to steaming the solvent by means of pressure reduction, and finally obtaining colorless and clear liquid, namely thiodiglycol dimethyl acrylate products. The one-pot method for directly preparing thiodiglycol dimethyl acrylate is low-cost and easily obtainable in raw materials, simple and mild in reaction condition, convenient and safe in operation, simple in after-treatment, high in product yield and suitable for industrialized production, high in product purity, colorless, clear and capable of being used for radical polymerization caused by photo initiation and preparing optical resin with high refractive index. The one-pot method for directly preparing thiodiglycol dimethyl acrylate has higher implementation value and potential social and economic benefits.

The invention discloses a side-chain sulfonated polysulfone proton exchange membrane and the preparing method thereof. The method comprises the steps of mixing and stirring polysulfone resin and chloroform uniformly, adding methacryloyl chloride and tin tetrachloride for reaction, precipitating, centrifuging, washing and drying, dissolving the mixture in 1-Methyl-2-pyrrolidinone, stirring to makeit dissolved completely, adding sodium p-styrenesulfonate and benzoyl peroxide to react, at last, dissolving the mixture in chloroform solution, casting into membrane in a culture dish, drying, removing membrane with deionized water, soaking the membrane in a soaking solution, and then washing proton exchange membrane with deionized water until the pH does not change. The side-chain sulfonated polysulfone proton exchange membrane prepared by the method can form a micro-phase separation structure with hydrophilic micro-region far away from hydrophobic micro-region because the hydrophilic groupis far away from the hydrophobic main chain, so that the PEMs keep good performance in high water absorption.

The invention relates to a synthesis method of alpha-methacryloylchloride. The method comprises the following steps of: adding an organic base catalyst accounting for 0.5-2 percent relative to the weight of alpha-methacrylic acid and a polymerization inhibitor accounting for 0.1-1 percent relative to the weight of the alpha-methacrylic acid in the alpha-methacrylic acid; adding solid phosgene or liquid phosgene within 1 hour at room temperature and reacting for 4-10 hours at 20-75 DEG C; carrying out atmospheric distillation; and collecting fractions of 95-98 DEG C to obtain the alpha-methacryloylchloride. In the invention, the solid phosgene or the liquid phosgene is used for replacing thionyl chloride and phosphorus trichloride to be used as an acylation and chlorination reagent, generated by-products are carbon dioxide and hydrogen chloride gas, and the hydrogen chloride gas can be utilized after being absorbed and is environmentally friendly, which can realize green production. The yield of the target product prepared by using the synthesis method can reach 69.3 percent, the product purity is higher than 97 percent, a single impurity is not more than 0.5 percent, and the quality of the product is stable.

The invention relates to a polysiloxane based surfactant for polymerization reaction in supercritical carbon dioxide, which is structurally represented as: (see the original text), wherein, p ranges from 7 to 13, q ranges from 7-13, n ranges from 12-17, and the number-average molecular weight of the surfactant ranges from 10KDa to 50KDa. The preparation method for the polysiloxane based surfactant includes the steps: firstly, carrying out a condensation reaction between low molecular weight hydroxy silicone oil and gamma-aminopropyl dimethoxymethyl-silane to generate a double-amino-terminated polysiloxane intermediate; then reacting the polysiloxane intermediate with methacryloyl chloride to generate a methacrylamide based polysiloxane macromonomer; and finally, generating the polysiloxane based surfactant under initiation of the azodiisobutyronitrile and by means of free radical polymerization.