1784results about How to "Simple process route" patented technology

The invention discloses a polyester resin with a high acid value and a low acid value for an environment-friendly dry blended low-gloss weather-resistant powder coating. The polyester resin is made from the following raw materials by weight percentages by virtue of esterification and condensation reaction: 15%-60% of polyol, 30%-65% of polyacid, 0%-5% of a branching agent, 5%-15% of an acidolysis agent and 0.01%-0.15% of an esterification catalyst. The invention further discloses a preparation method of the polyester resin with the high acid value and the low acid value for the environment-friendly dry blended low-gloss weather-resistant powder coating. Thepolyester resin with the high acid value and the polyester resin with the low acid value have the characteristics of proper glass transition temperature, proper softening point and good storage stability. A powder coating made by curing beta-hydroxyalkyl amide with the polyester resin has the advantages of excellent deglossing effect and good mechanical properties.

The invention discloses a preparation method of a high-liquid absorbing rate micro-nano structure polymer electrolyte membrane, wherein the membrane is prepared by polymer material being packed on a support frame. The method comprises the following steps of: by being processed, the polymer membrane has a micro-nano structure, forms holes with micron level and nanometer level, and forms a netty distribution hole structure with the nanometer holes of the support frame; and the polymer which is crossly linked layer by layer is packed on the special support frame to form a special netty micro-nano structure polymer electrolyte membrane. The polymer membrane of the micro-nano structure can absorb large numbers of electrolyte, greatly increase liquid-absorption rate, and improve the affinity of diaphragm to the electrolyte; the netty micro-nano structure leads the electrolyte to be kept in the membrane well, leads lithium ion in the polymer electrolyte membrane to be evenly distributed, leads the concentration to be to balanced, and lead the current density in the battery to be evenly when discharging electricity; and the special support frame guarantees the mechanical capability of the membrane. The preparation technology of the polymer electrolyte membrane has simple route and easily obtained raw material, can be operated under a normal condition, and does not need harsh production environment. The polymer lithium ion battery prepared by the membrane has good electrochemistry capability.

The invention discloses a process unit and method for preparing polymethoxy dimethyl ether. According to the method, cheaper and more accessible methylal formaldehyde are used as raw materials, and a solid acid resin with longer service life is used as a catalyst to synthesize the polymethoxy dimethyl ether. By using the cheaper and more accessible methylal formaldehyde are used as the raw materials, the complete process workshop and process route are simple; and the catalyst adopts the solid acid resin which has the advantages of low cost, simple preparation process and longer service life.

The invention discloses a method for desulfurizing acid gas containing hydrogen sulfide and recycling sulfur. The method for desulfurizing acid gas containing hydrogen sulfide and recycling sulfur sequentially comprises the following steps: introducing the acid gas into a combustion furnace to be mixed with air introduced by the other pipeline so as to carry out a combustion reaction; introducing the gas reacted in the combustion furnace into a cooler to be cooled to 230-250 DEG C, after cooling, separating the cooled liquid sulfur at a liquid outlet, introducing mixed gas in the combustion furnace into a catalyst reactor, enabling hydrogen sulfide to react with sulfur dioxide in the catalyst reactor so as to generate sulfur and water, and separating the generated liquid sulfur at the liquid outlet of the catalyst reactor; introducing the mixed gas in the catalyst reactor into a hydrogenation reactor and enabling the sulfur dioxide to react with hydrogen in the hydrogenation reactor; introducing the gas in the hydrogenation reactor into a hydrogen sulfide absorption device and preparing the hydrogen sulfide into elemental sulfur under the action of an alkaline solution, a complex catalyst and the introduced air. The method for desulfurizing acid gas containing hydrogen sulfide and recycling sulfur has the advantages of short process route, high quality of produced sulfur and low energy consumption, is capable of fully removing SO2 gas and is green and environmentally friendly.

The invention provides a technique for treating and recycling lead-zinc ore dressing wastewater and aims to solve the problems of influence on the ore dressing index due to the recycling of the ore dressing wastewater for production and environmental pollution caused by drainage. The novel technique for treating and recycling the lead-zinc sulfide ore dressing wastewater comprises the steps of: adjusting the pH value of the total wastewater of an ore dressing plant; adding ferrous sulfate and flocculant into the wastewater to perform oxidation-coagulation treatment; and oxidizing the treated water by using chlorine dioxide, and performing catalytic oxidation and adsorption by using an active carbon bed, so that the treated water reaches the relevant discharge standard of China; and totally recycling the treated water by adopting the combined application of potential-controlled flotation and an environmental-protection collector. Compared with the field process technique, the method saves the cyanide flotation process and improves the recovery rates of lead, zinc and gold. The method provides whole technical integration of the combined application technique of the potential-controlled flotation and the environmental-protection collector and the wastewater treatment technique for the treatment and recycling of the lead-zinc ore dressing wastewater, and realizes recycling of the ore dressing wastewater.

The invention relates to a separating, purifying and inspecting method of anthocyanin in blueberry wine dregs, which belongs to the technical field of functional active constituent extraction and purification. In the separating method, blueberry wine dregs or frozen blueberry wine dregs are ground into slurry or are freeze-dried and crushed into powder; and the slurry or the powder is separated in a warm extraction method in an acidified ethanol solution, and blueberry anthocyanin coarse extracting liquid is obtained through reduced pressure concentration. The blueberry anthocyanin coarse extracting liquid is purified and concentrated to prepare a blueberry anthocyanin concentrated solution. The concentrated solution is freeze-dried to obtain blueberry wine dreg anthocyanin freeze-dried powder. In the invention, the anthocyanin is separated out from waste produced by blueberry wine, which shows the research and development of simple, efficient, environment-friendly and low-cost production technology; and the content of the anthocyanin in the blueberry anthocyanin freeze-dried powder is 10-40%. The anthocyanin concentrated solution or coarse extracting liquid can be directly manufactured into oral liquid, tablets and other functional foods. The anthocyanin freeze-dried powder can be manufactured into food stain with an obvious antioxidation to be widely used in the fields of beverages, wines and the like.

The invention relates to a graphene/hydroxyapatite nano composite and the preparation method thereof, particularly relates to a hydrothermal method for preparing graphene/hydroxyapatite nano composite through the assistance of amino acid, and belongs to the field of nano composite and biological material. According to the invention, graphene oxide is placed in deionized water for ultrasonic dispersion, and calcium chloride anhydrous is added for stirring, so as to form mixed solution A; amino acid is added into dilute phosphoric acid for stirring so as to form solution b, the dilute hydrochloric acid solution is used for adjusting the solution to enable the PH value to be 7.5 to 8.5, finally the mixed solution A and the mixed solution B are mixed to transfer into a polytetrafluoroethylene reaction kettle for hydro-thermal reaction, and after the reaction is finished, the composite can be obtained through centrifugating, cleaning and vacuum drying the product. The invention has the advantages that the operating process is relatively simple, the structure is controllable, the surface appearance is better, the specific surface area is larger, the dimension is even, and the like.

The present invention discloses a process for separation and extraction of 1,3-propylene glycol by fermentation method, which belongs to biochemical separation technical field. A rectification is carried out to separate alcohol in the fermentation liquor, then solids and dissolved protein are separated from the fermentation liquor by composite flocculation of cation type flocculant and non-ion type flocculant. The pH value of the obtained clear liquid is regulated by an acid, and an extraction is performed with an aldehyde. An aldolisation between 1,3-propylene glycol, 2,3-butanediol, glycerine and an aldehyde is carried out to obtain a cyclic acetal to be separated from water phase, salts and other solubility impurity are separated from 1,3-propylene glycol, 2,3-butanediol and glycerine along with the water phase. The acetal hydrolysis applies reacting rectification with solid acid catalyst, can obtain high concentration 1,3-propylene glycol, 2,3-butanediol and glycerine mixture, which is separated again by subsequent common rectification. Excessive aldehyde in the extract phase is recovered by rectification. The invention has the advantages of simple extraction and separation process, low energy consumption, high product recovery, less equipment investment and less land occupation.

The invention discloses a method for preparing carbon-coated lithium iron phosphate (LiFePO4/C). The method comprises the following steps: a, LiOH.H2O, reduced Fe powder and H3PO4 are weighed according to the molar ratio of 1:1:1 and are stirred in an aqueous solution so as to react for 2 to 10 hours under nitrogen protection; a carbon source is added to a reaction system, and an obtained suspension as a reaction product is subjected to spray drying through a high-speed centrifugal spray drying machine, so as to obtain a LiFePO4/C precursor; and b, the LiFePO4/C precursor is transferred to a tubular furnace in inert or non-oxidative atmosphere and treated for 6 to 24 hours at a temperature of between 200 and 750 DEG C, so as to obtain the LiFePO4/C. As the method adopts the Fe powder as a raw material, the specific discharge capacity of a LiFePO4/C anode material prepared by a coprecipitation method under the multiplying power between 0.1 and 2C is obviously improved.

The invention discloses a potassium-sodium-manganese-iron-based Prussian-blue electrode material, and a preparation method and application thereof, belonging to the technical field of synthesis of new-energy materials. According a technical scheme in the invention, the potassium-sodium-manganese-iron-based Prussian-blue electrode material has a general chemical formula of K<x>Na<y>MnFe(CN)<6>, wherein x and y are both more than 0 and less than 2; and the material has a cubic structure and a particle size of 10 to 200 nm. The invention also discloses the preparation method for the potassium-sodium-manganese-iron-based Prussian-blue electrode material and application of the material to the positive electrode of a sodium-ion battery. The potassium-sodium-manganese-iron-based Prussian-blue electrode material prepared in the invention has the cubic structure and a particle size of 10 to 200 nm; the nanometer three-dimensional structure of the material leads to increase in the specific surface area of the material and effective reduction in transfer distance of ions or electrons in the electrode material, so the rate performance and cycle stability of the electrode material are improved; and the electrode material has excellent electrochemical performance as a positive electrode material for the sodium-ion battery.

The invention provides an elagolix synthesis method. The elagolix synthesis method comprises enabling a compound 5 and a compound 10 to participate in a condensation reaction to finish N-alkylation reaction to obtain a compound 11, and then implementing alkaline hydrolysis to obtain elagolix 12. The invention further discloses two synthesis methods of the compound 5: the method I comprises enabling a 5-bromine-6-methylpyrimidine-2,4(1H,3H)-diketone compound 1 and a 2-(brooethyl)-1-fluorin-3-(trifluoromethyl) benzene compound 2 to have a condensation reaction to obtain an intermediate 3, and then having a coupling reaction; the method II comprises enabling 1-halide-3-fluorin-2-anisole and acetoacetate 7 to have a coupling reaction to obtain a compound 8, and then having a condensation cyclization reaction with a compound 9; the improvements greatly shorten the route steps, the route efficiency is improved, the use of a noble metal catalyst is avoided, and the process cost is greatly lowered. The operation of the route is simple, the total yield is high, the purity of an obtained product is also relatively high, and the method is suitable for the enlarged production.

The invention provides a microcapsule sustained release agent and a preparation method and application thereof. The microcapsule sustained release agent is prepared by embedding essence with gelatin and Arabic gum, and is applied to sanitary towels or sanitary cushions or panty-shape diapers or pet cushions. The microcapsule sustained release agent consists of a core material and a wall material, wherein the wall material consists of natural high molecular gelatin, Arabic gum and a curing agent; the core material consists of essence and essential oil; the curing agent consists of tannic acid and glutaraldehyde; and microencapsulation is performed on the core material and the wall material in the ratio 1:2. The invention further provides a preparation method of the microcapsule sustained release agent. The preparation method comprises the following steps of: adding an emulsifier into Arabic gum for mixing; adding essence or essential oil into an emulsion for homogenizing and emulsifying; adding a gelatin solution into the emulsified emulsion; agglomerating into a capsule; curing with a curing agent; and drying to obtain a high-dispersity microcapsule sustained release agent. By adding the microcapsule sustained release agent into the space between a skin contact layer and a water-absorbing layer of a sanitary towel or sanitary cushion or panty-shape diaper or pet cushion, the effect of keeping fragrance for a long time can be achieved.

The invention discloses preparation of a ribociclib key intermediate A; propiolic acid ester or amide 2 is directly used as a Sonogashira coupling side chain, coupling conditions are optimized, an intermediate 3 is obtained with relatively high yield, the intermediate 3 is directly subjected to ring closing under simple conditions to complete construction of a mother ring molecule, to obtain a structural formula A or a precursor ester 4 of the structural formula A, and the precursor ester 4 is subjected to hydrolysis and condensation to obtain the structural formula A. The route has simple operation, reaction steps are shorted, the yield is relatively high, and the purity of the obtained product is relatively high, and the method is suitable for enlarged production, wherein the reaction route is described in the specification.