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64results about How to "Enhanced steric effect" patented technology
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Method for preparing water-coal-slurry additive taking enzymatic hydrolysis lignin as raw material
InactiveCN101921639ARetain chemical activityHigh purityLiquid carbonaceous fuelsCelluloseActive agent
The invention provides a method for preparing a water-coal-slurry additive taking enzymatic hydrolysis lignin as a raw material. In the method, the chemical activity of the enzymatic hydrolysis lignin is utilized to directly perform polycondensation with sodium hydrogen sulfite, sodium metabisulfite, acetone and methanal to a prepare enzymatic hydrolysis lignin-sulphonated acetone-methanal condensation polymer (LSAF); the enzymatic hydrolysis lignin-sulphonated acetone-methanal condensation polymer (LSAF) is compatible with other types of surfactants, and is compounded with the surfactants, such as sodium dodecyl benzene sulfonate, PVA, carboxymethyl cellulose sodium and the like to prepare the water coat slurry which has higher stability and lower viscosity; and the liquidity of the water coat slurry is improved. The enzymatic hydrolysis lignin replaces the partial petrochemical raw materials to prepare modified high molecular materials, which not only lowers the cost of high molecular materials, but also can save the consumption of the petrochemical materials, and can generate significant social benefit; and the processing technique for preparing the water-coal-slurry additive taking the enzymatic hydrolysis lignin as a raw material is simple, is easy to implement and has good effect.
Owner:FUZHOU UNIV
Modified sulfamate efficient water reducer and preparation method thereof
The invention provides a modified sulfamate efficient water reducer and a preparation method thereof, particularly relates to a dinaphthol waste modified sulfamate efficient water reducer and relates to the technical field of waste treatment. The reducer comprises raw materials of, by weight, 120 parts to 130 parts of sodium sulfanilate, 400 parts of dinaphthol waste, 95 parts of phenol, 170 parts of formaldehyde, 25 parts of liquid caustic soda (30%), 30 parts to 50 parts of urea, 1 part to 10 parts of dodecyl diphenyl ether sodium disulfonate and 180 parts to 260 parts of water. By means of the water reducer and the preparation method thereof, dinaphthol waste recycling is achieved, waste water are not needed to be subjected to concentration or any other treatment of physical chemical treatment and the like, energy consumption is saved, and pollution and damage of the waste to the environment and humans are prevented.
Owner:萧县沃德化工科技有限公司
Method for preparing valganciclovir hydrochloride
InactiveCN101955481AEnhanced steric effectHigh yieldOrganic chemistryValganciclovir HydrochlorideHydrogenation reaction
The invention discloses a method for preparing valganciclovir hydrochloride I. The method comprises the following steps of: 1, dissolving phosphorus oxychloride into an inert solvent, and performing a reaction of the mixture and the alcoholic liquor to obtain phosphoryl halide II; 2, performing a reaction of ganciclovir and the phosphoryl halide II obtained in the step to obtain ganciclovir monoester III; 3, esterfying the ganciclovir monoester III in the step 2 and N-carbobenzoxy-L-valine to obtain ganciclovir diester IV; 4, acidizing the ganciclovir diester IV in the step 3 for dephosphorylation to obtain N-carbobenzoxy-L-valine ganciclovir monoester V; and 5, performing a hydrogenation reaction on the product in the step 4 to prepare the valganciclovir hydrochloride I. By the method, the ganciclovir monoester with high purity and yield can be produced, the post-processing is easy, and the post-processing difficulty is reduced.
Owner:STAR LAKE BIOSCI CO INC ZHAOQING GUANGDONG
Polycarboxylate-type water reducing agent
The invention discloses a water reducing agent raw material, namely an ethylene oxide-propylene oxide ternary-block polyether macromonomer, as well as a water reducing agent prepared from the raw material. The preparation of the water reducing agent comprises the following processes: mixing iso-pentenol polyoxyethylene ether and a sodium alcoholate catalyst, heating to 80-115 DEG C and dealcoholizing; heating to 110-130 DEG C, controlling pressure to be 0.25-0.40Mpa and adding ethylene oxide; adding propylene oxide at unchanged system temperature and unchanged pressure; heating to 130-160 DEG C, controlling pressure to be 0.35-0.60Mpa, and adding ethylene oxide again; and after reaction, adding a weak acid neutralizer, thereby obtaining the ethylene oxide-propylene oxide ternary-block polyether macromonomer. Due to the use of a ternary-block system, the functional adjustment on a branched chain is easy to perform, and the adaptability and the slump loss resistance of a polycarboxylate-type water reducing agent monomer are enhanced greatly.
Owner:WUHAN UNIV OF TECH
Polyether amine water reducing agent with controllable and regular molecular structure and preparation method of polyether amine water reducing agent
The invention discloses a polyether amine water reducing agent with a controllable and regular molecular structure. A preparation method of the polyether amine water reducing agent comprises the following steps: adopting an end-amino polyether and diepoxide to have amino-epoxy ring-opening polymerization reaction, obtaining a polymer with the end-amino polyether being grafted on a main chain into a side chain, and then enabling hydroxyl generated in the amino-epoxy ring-opening polymerization reaction to have esterification reaction with organic anhydride to obtain the polyether amine water reducing agent with the controllable and regular molecular structure. The water reducing agent prepared by the invention has the advantages of the existing water reducing agent, is also good in controllability of the production process, less in side reaction, high in applicability to different cement varieties, high in water reducing rate and high in cost performance and competitive advantage.
Owner:JIANGSU CHINA RAILWAY ARIT NEW MATEIRALS CO LTD
Liquid Toner Dispersion and Use Thereof
InactiveUS20150198903A1Low degree of substitutionReduce cakingDevelopersElectrographic processes using charge patternPolyesterPolyolefin
A liquid toner dispersion provided with marking particles comprising a pigment and a polyester based resin, the dispersion comprising a nonpolar organic carrier liquid and a hyperdispersant comprising a graft copolymer provided with an anchor group comprising an amine-functionalized polymer onto which at least one stabilizing group is grafted, wherein a first stabilizing group and a second stabilizing group are coupled to the anchor group, wherein the first stabilizing group is a polyolefin and the second stabilizing group is hydroxylated fatty acid compound.
Owner:XEIKON MFG NV
A kind of hexadendritic azosiloxane dye and its synthetic method
InactiveCN102295838AThe synthesis process is simpleMild conditionsGroup 4/14 element organic compoundsAzo dyesEthyl groupAniline
The hexadendritic azosiloxane dye disclosed by the present invention has a general structural formula such as formula 1, wherein when R1 is nitro, R2 is hydrogen or chlorine; when R1 is hydrogen, R2 is nitro. The synthesis method is as follows: 1,1,1-tris(4-hydroxyphenyl)ethane and 3-chloropropyl-1,2-diol are synthesized by Williamson ether to prepare a dendritic nucleus containing propylene glycol, and then combined with 4-[(2-N-Ethylanilino)ethoxy]-4-oxobutanoic acid was subjected to esterification reaction, and then diazo-coupling reaction with phenol derivatives was carried out to obtain six branched bifurcations with hydroxyl groups Nitrogen chromophore, the chromophore is added with isocyanate propyltriethoxysilane to obtain hexadendritic azosiloxane dye. The synthesis method has the advantages of simple process, mild conditions, readily available raw materials and high yield. The six-branched azosiloxane dye has good solubility and film-forming processability, large nonlinear optical performance and high thermal stability. Formula 1
Owner:ZHEJIANG UNIV
Preparation method of air-entraining ester polycarboxylate superplasticizer
The invention discloses a preparation method of an air-entraining ester polycarboxylate superplasticizer. The preparation method comprises the following steps: (1) preparing an esterification product; (2) copolymerization reaction; and (3) neutralization reaction. According to the preparation method, the esterification product is prepared by esterification of coco fatty acid diethanolamide and unsaturated acid, the preparation method has the advantages of low cost and simplicity and convenience in operation, and the prepared esterification product participates in the next copolymerization reaction, so that a main chain of the polycarboxylate superplasticizer has hydrophilic groups such as amide and the like; the prepared polycarboxylate superplasticizer has good air entraining and foam stabilizing properties, and the workability and the strength of concrete are improved.
Owner:KZJ NEW MATERIALS GROUP CO LTD +1
Liquid Toner Dispersion and Use Thereof
InactiveUS20150168863A1Beneficial caking propertyImprove adhesionDevelopersElectrographic processes using charge patternPolyesterOligomer
A liquid toner dispersion provided with marking particles comprising a pigment and a polyester based resin. The dispersion includes a nonpolar organic solvent and a hyperdispersant including a graft copolymer provided with an anchor group including an amine-functionalised polymer onto which at least one stabilising group is grafted. The stabilising group includes a hydroxylated fatty acid oligomer. The amine-functionalised polymer has a weight-average molecular weight of less than 1000 g / mol.
Owner:XEIKON MFG NV
Multi-alkyl-substituted diamine compound containing polycyclic aromatic hydrocarbon structure and preparation method and application thereof
InactiveCN106831447AReduce interactionImprove solubilityOrganic compound preparationAmino compound preparationCharge-transfer complexPolyamide
The invention belongs to the technical field of material science, and particularly discloses a multi-alkyl-substituted diamine compound containing a polycyclic aromatic hydrocarbon structure. A structural formula is shown in formula (I) or formula (II), wherein X is hydrogen or an alkyl group; Y is hydrogen, a phenyl group, a substituted phenyl group, a polycyclic aromatic hydrocarbon group, a hydroxyl group or a halide group. The multi-alkyl-substituted diamine compound containing the polycyclic aromatic hydrocarbon structure is characterized in that the steric hindrance of the polycyclic aromatic hydrocarbon group on a molecular structure is large, the number of alkyl groups is more, the structure is favorably regulated and controlled, the structure of a polyimide molecular chain prepared by the monomer is twisted, the stacking compactness is little, and the CTC (charge transfer complex) effect in molecular chains and between the molecular chains is inhibited; because the stability of the polycyclic aromatic hydrocarbon structure is high, the heat stability of the polymer is favorably maintained. The multi-alkyl-substituted diamine compound has the advantages that the synthesis is simple, the obtaining of raw materials is easy, and the diamine compound is suitable for industrial production; the diamine compound has large potential in preparation of dissolvable and transparent polyimide, and is suitable for synthesizing polyamide and polyamideimide high-performance materials.
Owner:SUN YAT SEN UNIV
Amide-modified polyester resin for powder coating and powder coating
ActiveCN112646155ADoes not affect glass transition temperatureImprove thermal stabilityPowdery paintsPolyester coatingsPolymer sciencePolyol
The invention discloses amide-modified polyester resin for a powder coating and the powder coating, and belongs to the technical field of coatings; the amide modified polyester resin for the powder coating comprises 35%-40% of polyol, 50%-53% of polybasic acid, 0.6%-3.1% of polybasic anhydride, 0.4%-2% of polyamine, 0.04%-1% of an esterification catalyst, 8%-15% of an acidolysis agent, 0.2%-1% of an antioxidant and 0.03%-0.05% of a curing accelerator; amide bonds are connected into polyester resin through polymerization reaction, and nitrogen atoms in the amide bonds have a pair of lone pair electrons, so that connection of the connected amide bonds plays a role of an electricity increasing agent; and meanwhile, compared with the prior art that amine compounds in a free state are directly added into a formula to serve as an electricity increasing agent, the amido bonds are grafted into the polyester resin through polymerization, the bond energy of a covalent bond formed in the polymerization grafting process is large, the covalent bond is not prone to breakage after being heated, and thus the introduction of the amido bonds cannot influence the glass transition temperature of the polyester resin, and the thermal stability of the polyester resin is improved.
Owner:ZHEJIANG GUANGHUA NEW MATERIALS
Process for preparing ultrafine calcium carbonate in wet-method grinding way
InactiveCN108557857AAvoid reunionSimple production processCalcium/strontium/barium carbonatesIron removalDiethylene glycol
The invention provides a process for preparing ultrafine calcium carbonate in a wet-method grinding way, which relates to the technical field of fine chemical industry. The process comprises the following steps: (1) transporting calcite to a jaw crusher by virtue of a transporting machine, roughly crushing the calcite, enabling the crushed calcite to enter a raymond mill to be finely crushed, filtering the finely crushed calcite, removing iron by virtue of an iron removal device, and obtaining dry powder; (2) adding water, diethylene glycol and front-stage dispersant, controlling the rotationspeed at 100 to 300 r / min, mixing for 10 to 20 min, adding the dry powder, increasing the rotation speed to 1000 to 1200 r / min, mixing for 20 to 40 min, transferring the mixed slurry into a grinding machine, wherein a ball-material ratio is 3:1, a grinding medium is grinding zirconium balls, after beginning the grinding, supplementing the front end dispersant one time every 30 minutes, grinding for 2 hours, then adding a rear dispersant and a PH adjusting agent, wherein the addition amount of the rear-stage dispersant is 0.4 to 0.5 percent of the weight of the calcite, and continuously grinding for 100 to 120 min; and (3) discharging, washing, drying, thus obtaining a finished product. By adopting the process, the agglomeration phenomenon in the production process of the ultrafine calciumcarbonate can be effectively solved, and the production scale can be increased.
Owner:立达超微工业(苏州)有限公司
Polyurethane waterproof coating and application thereof
ActiveCN112898889AGood anti-sagModerate viscosityPolyurea/polyurethane coatingsPolymer sciencePolyol
The invention discloses a polyurethane waterproof coating and application thereof; the polyurethane waterproof coating comprises a polyurethane prepolymer and an auxiliary agent; the raw materials of the polyurethane prepolymer comprise polyol, isocyanate and a secondary amine compound, the secondary amine compound is selected from one or a combination of more of compounds represented by formula (I); wherein R1 is branched chain alkylene; the R2 is H or C1-10 alkyl, or C1-10 alkyl substituted by one or more of C1-6 alkyl and C1-6 alkoxy, or phenyl; the polyurethane prepolymer is prepared by mixing and reacting polyol, a secondary amine compound and part of isocyanate and then adding the rest of isocyanate to react again; the waterproof coating is suitable for machine spraying on a high-temperature base layer, can give consideration to sagging resistance and viscosity balance, and is especially suitable for spraying construction on a base layer with the temperature of 50 DEG C or above.
Owner:JIANGSU CANLON BUILDING MATERIALS
High-grade woodware artware coating and preparation method thereof
InactiveCN111534205AGentle formationImprove impact resistanceAntifouling/underwater paintsPaints with biocidesPolymer scienceLiquid medium
The invention discloses a high-grade woodware artware coating. The high-grade woodware artware coating comprises a primer and a curing agent, wherein the primer is prepared from the following raw materials in parts by weight: 60 to 70 parts of modified epoxy resin, 2 to 3 parts of graphene oxide, 0.8 to 1 part of a coupling agent, 0.2 to 0.3 part of an antifoaming agent, 0.4 to 0.5 part of a thickener, 0.7 to 0.9 part of a base material wetting agent, 0.1 to 0.2 part of a leveling agent, 4 to 5 parts of dipropylene glycol butyl ether and 12 to 15 parts of water; the curing agent is a polyisocyanate curing agent, and the molar ratio of hydroxyl to isocyanate groups in the modified epoxy resin is 1: 1.3-1.4. According to the invention, the modified epoxy resin is used as a resin matrix of the coating, a modifier is used for graft modification of the epoxy resin chain, and then the modified epoxy resin chain is copolymerized with the polyurethane, so that the performance complementation of the epoxy resin and the polyurethane can be realized, and a coating film has excellent impact resistance, adhesive force, flexibility, hardness, gloss and liquid medium resistance; the obtained coating is suitable for surface coating of high-grade woodware artware, and a paint film with high protection performance is formed on the surface of the coating.
Owner:安徽持家汉家居工艺品有限公司
Imidazoline mannich base corrosion inhibitor and preparation method thereof
ActiveCN110105288AIncreased electron cloud densityPlay the role of peripheral shieldingOrganic chemistryDrilling compositionBenzaldehydePhysical chemistry
The invention relates to the technical field of corrosion inhibitors, and in particular relates to an imidazoline mannich base corrosion inhibitor and a preparation method thereof. The imidazoline mannich base corrosion inhibitor is of the structure shown in the formula I. The imidazoline mannich base corrosion inhibitor is prepared from, by mass, 10-20% of benzaldehyde, 5-15% of butanone, 40-60%of oleic acid imidazoline, 10-30% of ethanol, 1-5% of concentrated hydrochloric acid and 0.1-0.5% of a catalyst. According to the imidazoline mannich base corrosion inhibitor, a benzene ring, an imidazole ring and an ultra-long hydrophobic alkyl chain on imidazoline are introduced, the benzene ring in benzaldehyde and N atoms in the imidazoline ring have relatively high electron cloud density andcan form a firm coordination bond with an empty d track of metal, and the super-long hydrophobic alkyl chain forms a hydrophobic membrane layer away from the surface of the metal and has a peripheralshielding effect on the surface of the metal, so that the corrosion inhibitor has excellent corrosion inhibition performance in a high-temperature acidification environment.
Owner:CNOOC CHANGZHOU PAINT & COATINGS IND RES INST +2
(Pentaphenyl)phenyl Group Containing Compound, Polymeric Derivative Thereof And Method For Forming The Same
InactiveUS20100137461A1Efficiency in luminanceEfficient transferIndium organic compoundsIon-exchanger regenerationIridiumCarbazole
Owner:NAT TAIWAN UNIV
Preparation method of composite-layer mask material
InactiveCN112226906AUniform pore size distributionGood flexibilityConjugated cellulose/protein artificial filamentsConjugated synthetic polymer artificial filamentsFiberSpinning
The invention discloses a preparation method of a composite-layer mask material, and relates to the technical field of medical materials. The mask material is formed by compounding three layers of structures of a composite non-woven fabric, a nanofiber membrane and a composite non-woven fabric. The composite non-woven fabric is a polypropylene melt-blown non-woven fabric; the nanofiber membrane isobtained by spinning a spinning solution by adopting an electrostatic spinning method; and a mask with the composite structure prepared by the method is relatively uniform in pore size distribution,relatively small in average pore size and relatively good in filtering effect.
Owner:安徽灵春医用耗材有限公司
Super-strong-adsorptivity concrete rheological agent and preparation method thereof
ActiveCN109369858ASimple production processProduction process safetySide chainAtom-transfer radical-polymerization
The invention discloses a super-strong-adsorptivity concrete rheological agent and a preparation method thereof. The weight-average molecular weight of the rheological agent is 20000-80000. The rheological agent is prepared by the following steps: carrying out amino-epoxide ring-opening polymerization reaction by virtue of amino-terminal polyether and diepoxy oxide so as to obtain amino-terminal polyether grafted side chain polymer, carrying out esterification reaction modification on hydroxy generated through the amino-epoxide ring-opening polymerization reaction by virtue of halogenated alkyl acyl halide so as to obtain halogen-terminal polyether, and finally, carrying out atom transfer free radical polymerization reaction (ATRP), so as to obtain the super-strong-adsorptivity concrete rheological agent. By virtue of a large number of adsorption groups in the super-strong-adsorptivity concrete rheological agent, the electrostatic repulsion I enhanced, and the dispersing performance ofthe concrete rheological agent is improved; the dispersion holding capacity of the concrete rheological agent is improved by virtue of the strong steric hindrance; and the concrete rheological agenthas the advantages that the production process is good in controllability, the side effects are few, and the concrete rheological agent is strong in adaptability to different types of cement, high inwater-reducing rate and cost performance and obvious in competitive advantage.
Owner:BEIJING UNIV OF TECH
Sheet material adhesive
InactiveCN104910860AWide variety of sourcesLow costNon-macromolecular adhesive additivesProtein adhesivesChemistryAcetamide
The invention discloses a sheet material adhesive and relates to the field of sheet material production. The sheet material adhesive contains the following raw materials in parts by weight: 80-100 parts of protein-containing raw material, 0.5-2.5 parts of sodium dodecylbenzene sulfonate, 5-8 parts of boric acid, 10-30 parts of hexa-acetamide, 10-30 parts of reinforcing agent and 10-30 parts of anticorrosive agent. The sheet material adhesive disclosed by the invention is used for solving the problems that the existing synthetic resin adhesives release formaldehyde, pollute environment and are harmful to human. The sheet material adhesive is low in cost, high in bonding strength and good in water resistance and corrosion resistance and can cure at normal temperature, and particularly the low-temperature resistance is better than that of other adhesives.
Owner:LIUZHOU DONGHUI WOOD IND
Soluble resin substituted anthryl deep blue-light emitting material and preparation and application thereof
ActiveCN109336784AHigh synthetic yieldEasy to purifyOrganic chemistrySolid-state devicesSolubilityElectricity
The invention belongs to the technical field of blue-light electroluminescent materials and discloses a soluble resin substituted anthryl deep blue-light emitting material and preparation and the application thereof. The structural formula of the anthryl deep blue-light emitting material is I, wherein R is one of electricity absorbing structural units. The invention also discloses a preparation method of the anthryl deep blue-light emitting material. The soluble resin substituted anthryl deep blue-light emitting material has the characteristics of being good in solubility, thermal stability, film shape stability and easy to synthesize and purify and the like. In a non-doped electroluminescence device, the material shows a high light-emitting efficiency and a low-efficiency roll-off, and has an important application prospect.
Owner:SOUTH CHINA UNIV OF TECH
Low-reactivity polyaspartic acid ester resin and preparation method thereof, and coating and preparation method thereof
PendingCN114805731AHigh strengthGood weather resistancePolyurea/polyurethane coatingsPolymer sciencePolyaspartic acid
The invention relates to the field of polyaspartic acid ester resins and coatings thereof, and particularly discloses a low-reactivity polyaspartic acid ester resin and a preparation method thereof, and a coating and a preparation method thereof. The preparation method of the low-reactivity polyaspartic acid ester resin comprises the following steps: uniformly mixing 2, 4 '-diaminodicyclohexylmethane and 2, 2'-diaminodicyclohexylmethane to obtain a mixture, and carrying out Michael addition reaction on the mixture and diester maleate to obtain the polyaspartic acid ester resin. The polyaspartic acid ester resin prepared by the invention not only has low reaction activity, but also has the characteristics of high strength, high weather resistance, low viscosity, high solid content and low VOC (volatile organic compound) emission.
Owner:SHENZHEN FEIYANG JUNYAN TECH DEV
Novel polyurea based on diisocyanates and diacetyl m-phenylenediamine
InactiveCN101348555AReduced synthetic reactivityReduce reactivityPolyurea/polyurethane coatingsBreaking strengthRoom temperature
The invention discloses a polyurea of diisocyanate and a chain extender of gauged diacetyl lentine or of isocyanate, gauged diacetyl lentine, and an amino terminated polyether. The preparation method of the polyurea comprises the following steps of: solving the diisocyanate in a solvent or adding an amino terminated polyether after the dissolution of the diisocyanate; then adding quantitive chain extender of the gauged diacetyl lentine solution which is solved in a solvent, stirring the mixed solution evenly at a room temperature, carrying out the solvent volatilization of the solution at a temperature of between 50 and 60 DEG C, continuing to react for 24 to 36 hours, and finally carrying out the solvent volatilization at a temperature of between 80 and 110 DEG C for 1 to 4 hours and continuing to react until reaching a constant weight to obtain the polyurea which has the chain extended by the diacetyl lentine. The polyurea has better flexibility and shows higher tensile strength, breaking strength and elongation at break.
Owner:TIANJIN UNIVERSITY OF TECHNOLOGY
Synthesis method of 6-(dibromomethyl)-2-methylquinazoline-4(3H)-ketone
ActiveCN111995588AReduce the probability of brominationHigh purityOrganic chemistryBulk chemical productionKetoneProtecting group
The invention relates to a synthesis method of an important medical intermediate 6-(dibromomethyl)-2-methylquinazoline-4(3H)-ketone. According to the invention, 2, 6-dimethylquinazoline-4(3H)-ketone (1) is used as an initial raw material, and Boc protective group is added under alkaline conditions to prepare the compound (2), so that the polarity of 2, 6-dimethylquinazoline-4(3H)-ketone is effectively reduced, and the solubility is improved, and the bromination probability of 2-methyl is reduced by increasing steric effect and electronic effect; bromination reaction is carried out on the compound (2) to obtain a 6-methyl dibrominated product (3) with high selectivity; and finally, the protecting group is removed through an acidic reagent to obtain the high-purity 6-(dibromomethyl)-2-methylquinazoline-4(3H)-ketone. The synthesis method of the 6-(dibromomethyl)-2-methylquinazoline-4(3H)-ketone is simple in process route, convenient to operate, good in selectivity and high in yield.
Owner:HONGGUAN BIO PHARMA CO LTD
Common yam rhizome-licorice root herbal mashed potatoes and preparation method thereof
The invention discloses a herbal mashed potato with yam and licorice, which is prepared from the following raw materials in parts by weight: watermelon peel 18-19, sweet almond 15-20, brown sugar 3-5, yam 20-22, licorice 1.6-2, water chestnut shell 1.6-2.1, begonia root 1.2-2.1, potatoes 200-230, pork belly 100-120, salt 8-10, chili powder 3-4, pepper powder 2-3, sodium carboxymethylcellulose 2-3, 1-1.2 mol / lNaOH, selenium-enriched peanut 100-150, succinic anhydride 0.1-0.15, phosphate buffer, petroleum ether in proper amount. In the present invention, sodium carboxymethyl cellulose and peanut protein isolate undergo a glycosylation reaction to form a covalent complex that can maintain good emulsification of food at high temperatures, increase the polypeptide chain, enhance the steric hindrance effect, and simultaneously enhance the complex thermal stability.
Owner:方加盛
Embolism microsphere capable of slowly releasing medicine and preparation method of embolism microsphere
ActiveCN114306724AWith slow release functionFast drug loading rateSurgical adhesivesMicrosphereBackbone chain
The invention provides an embolism microsphere capable of slowly releasing medicine and a preparation method of the embolism microsphere, and belongs to the technical field of medical materials. Molecules capable of slowly releasing drugs are connected to a main chain of the polyhydroxy polymer through an acetal structure or an ester bond structure or copolymerized in a macromolecular network of the microspheres through double bonds. The embolism microsphere capable of slowly releasing the medicine, prepared by the invention, has good medicine loading speed and medicine loading capacity, has the capability of slowly releasing the medicine, and is relatively long in release time, relatively simple in preparation method and mild in reaction condition.
Owner:SHANGHAI HUIHE HEALTHCARE TECH CO LTD
Novel anti-mud slump-retaining nano polycarboxylic acid water reducer and preparation method thereof
ActiveCN112759725AGood slump performanceImprove slump retentionSolid waste managementPolymer scienceSuperplasticizer
The invention discloses a preparation method of a novel anti-mud slump-retaining nano polycarboxylic acid water reducer. The novel anti-mud slump-retaining nano polycarboxylic acid water reducer is prepared by the following steps: (1) preparing an anti-mud cross-linking agent; and (2) performing polymerization reaction. The novel anti-mud slump-retaining nano polycarboxylic acid water reducer with a cross-linked structure is obtained by carrying out emulsion polymerization on a sulfonate polymerizable emulsifier, a polyether polyol anti-mud cross-linking agent and a monomer. Through cross-linking hardening of the nano-micelle structure, the dispersity of the water reducer can be improved, and the effects of thickening, viscosity reduction, effective mud resistance and concrete workability improvement are achieved. As the nano polycarboxylate superplasticizer is gradually hydrolyzed in cement paste, micelles are cracked through fracture of a cross-linked structure and change of hydrophilicity and hydrophobicity, and various anti-mud small molecules and linear polycarboxylic acid molecules can be released, so that the nano polycarboxylate superplasticizer has long-term anti-mud slump retaining effects. The water reducer can also be used as a regulator in machine-made sand concrete.
Owner:RAILWAY ENG RES INST CHINA ACADEMY OF RAILWAY SCI +3
Hyper-branched polycarboxylate high-efficiency water reducing agent and preparation method thereof
Owner:厦门路桥翔通建材科技有限公司 +1
Preparation method for high-efficiency heavy calcium carbonate grinding dispersing agent with comb-shaped structure, product and application of product
ActiveCN106543384AMolecular weight controllablePrecise and controllable molecular weightPigment treatment with macromolecular organic compoundsPigment physical treatmentSide chainPolyethylene glycol
The invention discloses a preparation method for a high-efficiency heavy calcium carbonate grinding dispersing agent with a comb-shaped structure, wherein the preparation method comprises the following steps: (1) adding a vinyl carboxylic acid monomer, a methacrylic acid polyethylene glycol monomer, a polythio ester chain transfer agent and an initiator into a solvent, then bubbling with nitrogen gas for a period of time, and then sealing; (2) heating to a certain temperature, and carrying out a reaction for a period of time; (3) after the reaction is finished, distilling to remove the solvent, and adding water to dilute; and (4) adding one or more alkali reagent solutions, adjusting the pH of the system to 5-8, adding water to adjust the solid content to 20 mass%-50 mass%, and thus obtaining the high-efficiency heavy calcium carbonate grinding dispersing agent. The invention also discloses the comb-shaped structure dispersing agent prepared by the method; a side chain can effectively enhance the steric effect, the molecular weight and the molecular weight distribution can be precisely controlled, free counter ions are not introduced, and the operation is simple and feasible; and at the same time, alkalis calcium hydroxide and magnesium hydroxide are introduced in a neutralization stage in the method, the counter ion effect of the dispersing agent can be reduced, and thus the dispersion performance is improved.
Owner:SHANGHAI DONGSHENG NEW MATERIALS
Efficient concrete additive and preparation method thereof
InactiveCN110436814AReduce manufacturing costRaw materials are easy to getEthyl ChlorideMechanical property
The invention discloses a preparation method of efficient concrete additive. The preparation method comprises the following steps: (I) preparing chloro-polyethylene glycol monomethyl ether; (II) preparing an ionized naphthalene sulfonic acid type compound; (III) preparing polycondensate; and (IV) preparing a water reduction agent product. The invention further discloses the efficient concrete additive prepared by using the preparation method of the efficient concrete additive. The efficient concrete additive disclosed by the invention is remarkable in water reduction effect, low in slump loss,good in bleeding resistance and freezing resistance, good in adaptability to cement, and capable of effectively improving the dispersibility of cement, greatly improving the peaceability of concreteand improving various mechanical properties of concrete.
Owner:刘艳蕊
Pyrola mashed potato with green onion flavor and preparation method thereof
InactiveCN105995755AImprove textureGreat tasteProteins working-up by texturisingVegetable proteins working-upFood flavorPetroleum ether
The invention discloses a deer jelly grass scallion-flavored mashed potato, which is prepared from the following raw materials in parts by weight: chopped green onion 3-4, rabbit leg 12-16, beer 18-20, soybean meal 14-16, velvet antler 1.2-2.2, wax gourd Skin 1.8‑2, deer jelly 1.1‑2, potatoes 200‑230, pork belly 100‑120, salt 8‑10, chili powder 3‑4, pepper powder 2‑3, sodium carboxymethylcellulose 2‑3, 1 ‑1.2mol / lNaOH, selenium-enriched peanut 100‑150, succinic anhydride 0.1‑0.15, phosphate buffer, appropriate amount of petroleum ether. In the present invention, sodium carboxymethyl cellulose and peanut protein isolate undergo a glycosylation reaction to form a covalent complex that can maintain good emulsification of food at high temperatures, increase the polypeptide chain, enhance the steric hindrance effect, and simultaneously enhance the complex thermal stability.
Owner:方加盛
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