83 results about "Synthetic monomer" patented technology

The invention discloses a cation type hydrophobic association polymer and a preparation method and application thereof. Through adopting acrylamide, dimethyl diallyl ammonium chloride and butyl acrylate as synthesis monomer, the cation type hydrophobic association polymer is made through a common free radical micelle polymerization method and making use of a composite initiation system and additive auxiliary agent urea. Moreover, the cation type hydrophobic association polymer, which has the characteristics of high molecular weight, excellent product stability, strong adsorption bridging capacity of colloid matter, good flocculation effect, wide application scope, less generated sludge and hydrophobic association function, etc., can be widely used in the treatment of oil field oily wastewater.

The invention relates to a filtrate loss reducer for high-temperature-resistant oil field drilling fluid, a preparation method of the filtrate loss reducer, and application of a treatment agent. A novel high-temperature-resistant filtrate loss reducer is synthesized by implementing the following steps: adopting lignin, acrylamide and 2-acrylamide-2-methyl propanesulfonate as synthetic monomers; enabling the synthetic monomers to perform graft copolymerization under the initiation of potassium peroxodisulfate, ammonium ferrous sulfate hexahydrate and hydrogen peroxide respectively; adding a crosslinking agent, namely N,N-methylene bisacrylamide to enhance the stabilizing force of the synthetic monomers under high temperature condition. The filtrate loss reducer disclosed by the invention adopts waste materials of a paper-making factory, is extensive in source and low in cost, and can be used for absorbing the excellent viscosity reduction capacity of lignin; the introduced acrylamide and 2-acrylamide-2-methyl propanesulfonate can be used for improving the precipitation capacity at a high temperature; N,N-methylene bisacrylamide is added as the crosslinking agent to ensure that a network structure is formed, the high temperature resistance can be improved, an oil and gas layer can be protected from collapsing, and the service life of an oil well can be prolonged. A product disclosed by the invention is applied to the oil field drilling fluid.

The invention relates to side substitution aromatic ester diphenol, a preparation method and a preparation method of a mesomorphic epoxy monomer. The side substitution aromatic ester diphenol has a general formula shown in the specification of the invention, wherein X stands for an aryl group with side substitution. In the preparation method of an aromatic ester mesomorphic epoxy monomer by using the side substitution aromatic ester diphenol, a synthetic period of the monomer is greatly shortened, the raw materials of the synthetic monomer are cheap and are easy to obtain, and the preparation method is simple and convenient.

The invention relates to heat accumulation and preservation polyurethane elastic fibers containing phase change microcapsules and a preparation method of the heat accumulation and preservation polyurethane elastic fibers. According to the heat accumulation and preservation fibers, the heat accumulation and preservation performance of polyurethane fibers can be improved by adding 0.5-5wt% of the phase change microcapsules into polyurethane elastic fibers. The preparation method specifically comprises the following steps: (1) preparing the phase change microcapsules with nuclear shell structures by adopting a suspension polymerization method; (2) performing condensation and polymerization by taking polyether diol and diisocyanate as synthetic monomers to form prepolymer, dissolving the prepolymer by adding a solvent, and adding mixed amine to perform chain extension reaction and chain termination reaction on the prepolymer to obtain a polyurethane urea solution; and (3) adding the prepared phase change microcapsules together with other auxiliary agents into the polyurethane urea solution, performing mixed curing, and treating a spinning stock solution subjected to curing by virtue of a dry spinning technology to prepare the heat accumulation and preservation polyurethane elastic fibers. The polyurethane elastic fibers prepared by the method provided by the invention contain a certain proportion of a phase change material, the fibers prepared by the method provided by the invention or textiles of the fibers have excellent heat accumulation and preservation performances.

The invention discloses a preparation method of a covalent organic framework/carbon nitride composite material and application thereof. Firstly, a covalent organic framework material is synthesized byusing p-phenylenediamine and triformyl phloroglucinol as synthetic monomers through a room-temperature solid-phase method, then the covalent organic framework material and carbon nitride are mixed, stirred and dried in methyl alcohol, and pyrolysis is carried out under the protection of inert gas to obtain a target product. The covalent organic framework/carbon nitride composite material disclosed by the invention is large in specific surface area, high in nitrogen doping amount and rich in pore structure and can effectively remove toxic organic pollutants in water by constructing a novel Fenton-like system, and new application of the covalent organic framework material in the field of catalysis is expanded; unavoidable metal ion leaching in the activating process of a metal nano catalystis overcome; and the preparation method has the advantages of simple process, easiness for repeated operation, controllable structure, suitability for large-scale production and the like.

The invention discloses a low-cost modified amino-sulfonic acid-based high-efficiency water reducer and a preparation method thereof. The preparation method comprises the following steps of: adding 25-35 parts by weight of water into a reaction kettle, heating the water to 65-70 DEG C, inputting 10-17 parts by weight of interaction sulfanilic acid, 9-14 parts by weight of industrial waste phenolic residue and 3-5 parts by weight of pH value regulator, and raising the temperature to 85-90 DEG C while stirring; dropwise adding 18-26 parts by weight of formaldehyde within 15-30min, and keeping the temperature to be 92-95 DEG C for 2-6h; and adding 1-2 parts by weight of pH value regulator and 15-22 parts by weight of straw pulp black liquor, keeping the temperature within 85-90 DEG C for 2-4h, and cooling to the room temperature to obtain a liquid product. The product is prepared by utilizing a rough industrial product and industrial wastes with lower price as synthesis monomer and modifiers, thereby improving the inherent defects of mixing amount sensitivity and easy bleeding and bottom pushing of concrete of the amino-sulfonic acid-based high-efficiency water reducer, lowering the production cost of the water reducer, fully utilizing the industrial wastes and reducing the environmental pollution.

The invention relates to a preparing method of lowering residual monomer content of ultra high molecular weight anion-type polyacrylamide. The invention has the technical scheme as follows: acrylamide(AM), 2-acrylamide-2-methylpropane sulfonic acid (AMPS) and acrylic acid (AA) are taken as a synthetic monomer; a kettle-type chunk polymerization technology, a complex initiation system, hydrolyzerposthydrolysis and fluidized bed drying preparation are adopted; acrylamide dry powder is white power-type particle; polyacrylamide colloidal particles in a hydrolyzer are transmitted to a static fluidized bed for drying after pelleting by a secondary pelletizer, are crushed by a grinder and are packaged into bags. The invention has the beneficial effect that the content of a residual monomer is controlled below 0.05%, which can satisfy the technical requirements of three-time adoption, sewage treatment and raw water treatment.

The invention relates to a macromolecule degradated polymer and its producing method belonging to material technical field. The polymer contains more than two monomers such as hydroxy acid or lactone or lactide formed by hydroxy acid, binary carboxylic acid or binary acid anhydride, aliphatic diamine or aromatic diamine, diatomic alcohol. The molecule chain of the polymer contains benzene ring. The molar ratio of the benzene ring monomer to polymer is 1-40%. The weight-average molecular weight of the polymer is more than 80000. The invention has the following process: adding the synthesis monomer material into the reaction vessel in proportion for a polymerization reaction, getting polyprotic oligomer with a certain polymeric level at 120-200 DEG C, with a vacuum degree of 10000Pa-100000Pa for 0.5-5 hours; polymerizing the polyprotic oligomer in vacuum with a vacuum degree of 1-50 Pa, at 150-300 DEG C for 10-50 hours in a catalytic environment, finally getting the target polymer. The invention can be widely used for fiber product, piece product, foaming product, injection molding product, membrane product and etc.

In the present invention, resin expending on water absorption is prepared by polymerization of synthetic monomer of propenoic acid ester containing polyoxyvinyl ether, catalyst, initiator and cross-linking agent; rubber expending on water contact is prepared from resin expending on water absorption, polychloroprene, filler, softener, promoter and antiager through mixing and valcanizing.

The invention relates to a ground calcium carbonate suspension production process. The ground calcium carbonate suspension production process comprises the following steps: providing a nano-crystalline cellulose solution of which the surface carboxyl content is 0.2-1.5mmol/g and the diameter is smaller than or equal to 100 nanometers; and providing calcium carbonate to be ground, preparing a mixed solution by taking the nano-crystalline cellulose solution as a dispersing agent according to a mixing proportion of adding 1-10kg by oven dry weight of the nano-crystalline cellulose solution into 1 ton of calcium carbonate, and grinding the mixed solution to obtain a ground calcium carbonate suspension. According to the ground calcium carbonate solution production process, the nano-crystalline cellulose solution of which the surface carboxyl content is 0.2-1.5mmol/g and the diameter is smaller than or equal to 100 nanometers is taken as the dispersing agent, instead of conventional sodium polyacrylate and salts thereof, so that the grain size of finished ground calcium carbonate meets the requirement, and damage to the skin and the respiratory tract of a person caused by a synthetic monomer in the preparation and use processes of polyacrylic acid and salts thereof is effectively avoided. The invention further relates to the ground calcium carbonate suspension and paper.

In order to solve the problem that the solubility of existing polyimide resin is poor, the invention provides polyimide resin and transparent polyimide film. The polyimide resin and transparent polyimide film comprise structural units (a) and (b), in the structural unit (a), A is a residue of dianhydride, the residue of the dianhydride comprises dianhydride residue containing benzene rings; in thestructural units (a) and (b), R1 and R2 independently represent hydrogen atoms, halogen atoms, nitrile groups, nitro groups, alkyl groups, alkoxy groups or benzodiazepines substituent groups. A synthetic monomer of the film comprises dianhydride and diamine, the dianhydride comprises dianhydride containing benzene rings; the diamine is selected from fluorenediamine. The polyimide resin has good solubility; the transparent polyimide film prepared from the polyimide resin has the advantages of high transmittance, good heat resistance and the like.

The invention discloses a method for producing natural essence for Luzhou-flavor wine from fermented grain waste of wine by solid/liquid combined fermentation, which comprises the following steps: adding saccharifying enzyme, acid protease, high-temperature-resistant active dry yeast, medium-temperature yeast and cellulase into fermented grain waste of wine; carrying out solid-state fermentation in a cellar; adding rhizopus, red yeast rice, high-temperature yeast, fermented grain waste wine and concentrated hexanoic acid fermentation liquid; carrying out solid/liquid combined fermentation in the cellar; and carrying out extractive distillation on the fermented unstrained wine, carrying out sectionalized concentration, blending and compounding to obtain the natural essence product for Luzhou-flavor wine. The invention has the advantages of low cost and short production cycle, and can treat 35000t of fermented grain waste per year if a production scale of 8000t/a is formed, thereby performing a huge function on regional environmental protection; and meanwhile, the natural essence can be used as a seasoning liquid for brewage so as to avoid temporary fragrance caused by adding synthetic monomer essence, thereby enhancing the natural sensation and solid-state sensation of wine and enhancing the quality of wine.

Novel synthetic monomers that have the capacity to be assembled into defined oligomers which bind with sequence specificity to duplex Watson-Crick DNA via a triple helix motif are provided.

An efficient process for synthesizing the ultrabranched polyester-amine includes aminolysis of acid anhydride, acetylizing hydroxy to obtain nanometer N-(2-acetoxyethyl)-N-(1,3'-dicarboxy benzoyl) amine, putting it along with catalyst in reaction tube, heating reaction in N2 atmosphere, vacuumizing, and cooling. Its advantages are simple process and high yield.

The invention relates to an organic phosphonate concrete plastic retaining agent and a preparation method thereof. The preparation method comprises the following steps: by taking the following components as synthetic monomers: 12-20 percent of sodium hypophosphite, 3-8 percent of styrene, 12-18 percent of unsaturated dicarboxylic acid, 18-26 percent of (methyl) hydroxyalkyl acrylate and 28-45 percent of 2-acrylamide-2-methyl propane sulfonic acid (AMPS), performing aqueous solution polymerization under the action of an initiator, thereby synthesizing an organic phosphonate copolymer. The hydroxyalkyl ester, carboxyl, acylamino, sulfo group and the like introduced into the molecular structure have a certain delayed coagulation effects and good plastic retaining effects. According to the invention, the aqueous solution normal-pressure production is adopted, the equipment requirement is low, the operation is convenient, the method is environmentally friendly, the industrial production is promoted, and the product does not contain chloride ions and does not have corrosion damage to steel bars in the concrete.

The present invention provides nano powder comprising a plurality of nanoparticles, and the surfaces of the nanoparticles have polymerized functional groups, wherein each polymerized functional groupcomprises a polyimide functional group, and the polymerized functional group base is produced by chemically synthesizing the nanoparticles with a synthetic monomer.

The instant invention relates to a new method for the synthesis of monomers and their use inter alia in the manufacture of semiconductive polymers. Monomers, in particular, asymmetric monomers, such as asymmetric fluorene compounds, are valuable material in the manufacture of semiconductive polymers. The know methods for producing asymmetric monomers, such as asymmetric fluorene compounds, are expensive due to the formation of by-products.

The method according to the present invention avoids the formation of such by-products and is described in more detail in claims 1 to 14.

The invention relates to a medical care composite material and a disposable injector prepared from the medical care composite material. Particularly, the medical care composite material is prepared from PLA (polylactic acid), toughening agents and antioxidants, wherein per 100 weight parts of PLA contains 10 to 50 parts of toughening agents and 0 to 1 part of antioxidants. All blending ingredientsare medical stage non-toxic products; synthetic monomers and corresponding polymers are safe and non-toxic on the human bodies; after 4 to 6 months under the compost conditions, the materials can beautomatically degraded into water and carbon dioxide; micromolecular plasticizers are not contained in blending resin; the danger of separation of compounds of the type, medicine liquid pollution andhuman body entering cannot occur. The medical care composite material is used as a special material for the disposable injector and is used for preparing the disposable degradable injector. The material has the advantages that the performance in aspects of bacterium resistance and degradation is obviously superior to that of pure polylactic acid raw materials. The formula is reasonable; the performance is stable; environment is not polluted; the mass production can be realized in a purified workshop.

The invention discloses a polymeric (diaryl fluorene ethylene) material, a preparation method and an application method thereof, belong to the scientific and technical field of organic optoelectronic materials, in particular relates to a diaryl fluorine ethylene polymeric material and application of the polymeric material as a host material, a hole transport material, an electron transport material, a switch material and a tricolor luminescent material to the organic electron field, such as organic flash memory devices, photovoltaic cells and organic light emitting display. The polymeric material has the following structure. The polymeric material has the following advantages: (1) raw materials are cheap and the synthetic method is convenient as a monomer is synthesized by a Friedel-Crafts reaction; (2) diaryl fluorene has high thermal stability and vitrification point; (3) main chain of polyethylene has better flexibility and high solubility; and (4) stacking effect of the diaryl fluorene has better optoelectrical activity. Electroluminescent devices prepared from the material of the invention achieve satisfactory results in terms of brightness, luminous efficiency, voltage withstanding stability and the like.

The invention provides a novel crystallizable polyether ether ketone resin capable of dissolving side groups containing phthalein and a preparation method thereof, and belongs to the technical field of polymer materials. Under nitrogen protection conditions, mixed bisphenol and a dihalogen monomer of the equimolar ratio are used as a synthetic monomer, toluene or xylene is used as a water-carryingagent, potassium carbonate and/or sodium carbonate 1-1.4 times the total molar amount of a bisphenol monomer is used as a catalyst, and sulfolane or dimethyl sulfoxide is used as a solvent for the reaction. Synthesis is performed at 240 DEG C for 4.5-10 hours. The crystallinity of the resin is 2-40%, and the number average relative molecular weight is more than 30,000. The thermal tensile deformation rate of the resin at 250 DEG C is 0-400%, and the resin can be dissolved in 1,1',2,2'-tetrachloroethane and/or p-chlorophenol. The polyether ether ketone resin has the advantages of strong crystallization capacity, high molecular mass, good tensile performance, strong molecular orientation capability and excellent solubility.

The invention relates to a medical polylactic acid composite material and a disposable syringe prepared from the same, in particular to a medical degradable composite material. The composite materialcomprises, by weight, 100 parts of PLA (polylactic acid), 10-50 parts of a flexibilizer and 0-1 part of an antioxidant. All blend components are medical nontoxic products, synthetic monomers and corresponding polymers are totally nontoxic to human bodies, automatic degradation into water and carbon dioxide within 4-6 months under a composting condition can be realized, mixed resin is free of micromolecular plasticizers, and risks of separation, entering human bodies and liquid medicine contamination of the similar composites are avoided. The medical polylactic acid composite material serving as a special material for disposable degradable syringes is evidently superior to pure polylactic acid materials in antibacterial and degradation performance and can be used for preparation of the disposable degradable syringes. The medical polylactic acid composite material is reasonable in formulation, stable in performance, free of environment pollution and available for large-batch production in purification workshops.

The invention discloses a novel controlled-release fertilizer coating agent and a preparation method thereof. The coating agent synthetic monomers mainly include rigid monomer with higher Tg, flexible monomer with lower Tg and functional monomer. Type and content of the functional monomer are changed, and functional groups with different hydrophilicity and content are introduced on a polymer chain, thus, a polymeric membrane has different permeability, control on release rate of fertilizer is realized, and requirements of crops in different growth cycles are satisfied. The coating material with such structure has good film-forming ability, water tightness and release control property to fertilizer, and wide adaptability.

The invention discloses a preparation method of a super-hydrophobic emulsion containing a short fluorinated alkyl group, wherein the preparation method comprises the steps: by using water as a solvent, a functional monomer BRFAE containing a branched high-fluorocarbon alcohol group structure and an acrylic monomer, adding an initiator under the actions of an emulsifier, a crosslinking agent and aco-stabilizer, and carrying out miniemulsion polymerization at the temperature of 44444 DEG C to synthesize a monomer copolymer. A coating layer has a contact angle of more than 144 degrees and a rolling angle of less than 14 degrees on glass, wood, steel plates, plastics and other substrates, and has excellent hydrophobicity. The super-hydrophobic emulsion prepared by the method contains branched-chain high-fluorocarbon alcohol groups, has the advantage of easiness in degradation, is environment-friendly, and meets the requirements of green chemistry.