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37results about How to "Good alkali resistance and stability" patented technology
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Imidazole ionic liquid with high alkali-resistant stability and application of imidazole ionic liquid
ActiveCN102702106AGood alkali resistance and stabilityImprove alkali resistance and stabilityOrganic chemistryAlkaline anion exchange membraneChemical structure
The invention discloses imidazole ionic liquid with high alkali-resistant stability and application of the imidazole ionic liquid. The ionic liquid has the following chemical structure as shown in the text, wherein m is an integer between 0 to 8, n is an integer between 0 to 6, -R is one of FORMULAE, and X is one of I, Br and Cl. The ionic liquid can be used for preparing an anion exchange polymer membrane. The ionic liquid has high alkali-resistant stability; by using the imidazole ionic liquid, the alkali-resistant stability of the alkali anion exchange membrane is greatly improved; and the imidazole ionic liquid can be applied in the field of alkali fuel cells.
Owner:安徽麦基艾迪新材料科技有限公司
Cardo structure-containing isatin aromatic hydrocarbon copolymer, preparation method and application thereof
Belonging to the field of preparation of polymer materials and polymer ion exchange membranes thereof, the invention relates to a Cardo structure-containing isatin aromatic hydrocarbon copolymer, a preparation method and application thereof. Specifically, by means of superacid catalyzed hydroxyalkylation polycondensation reaction, isatin, 9, 9-disubstituted fluorene and aromatic hydrocarbon are subjected to a multi-component copolymerization reaction to synthesize an isatin-aromatic hydrocarbon copolymer containing Cardo structure and ammonium cations, so that an electrolyte solution and a tough anion exchange membrane can be conveniently prepared, and the polymerization reaction is simple and practicable. A large-volume Cardo structure is introduced into the polymer, thus reducing the adsorption on a catalyst surface and improving the fuel cell performance; an isatin structure is introduced for crosslinking or functionalization so as to further improve the chemical stability and mechanical properties. The copolymer electrolyte solution and the ion exchange membrane have high ionic conductivity, excellent alkali resistance / oxidation resistance and mechanical properties, and have wide application in fuel cells, energy storage batteries, electrolysis and other electrochemical devices or membrane separation related fields.
Owner:DALIAN UNIV OF TECH
Preparation method of semi-flexible polyether sulfone/ ketone anion-exchange membrane
ActiveCN105482118AImprove mechanical propertiesHigh ion conductivityCell electrodesPolymer scienceFuel cells
The invention discloses a preparation method of a semi-flexible polyether sulfone / ketone anion-exchange membrane, and particularly provides a preparation method of a high-conductivity anion-exchange membrane of a fuel cell. The membrane material contains flexible aliphatic chains with different lengths in repetitive units. The preparation method comprises steps as follows: 1), polymer synthesis; 2), polymer halomethylation; 3), preparation of the semi-flexible polyether sulfone / ketone anion-exchange membrane. Due to the fact that the aliphatic chains are introduced into a main polymer chain, the flexibility of the main chain is further improved, the main chain acquires higher mobility, hydrophilic and hydrophobic microphase separation is enhanced, a better ion channel is formed accordingly, and membrane swelling is reduced. The preparation technology is simple, the cost is low, and the prepared anion-exchange membrane has high conductivity and good stability and is applicable to an alkaline fuel cell.
Owner:DALIAN UNIV OF TECH
Novel synthetic cationic vegetable oil fat liquor and preparation method thereof
ActiveCN104831004AImprove permeabilityEvenly distributedOrganic compound preparationPreparation by ester-hydroxy reactionVegetable oilRapeseed
Disclosed are a novel synthetic cationic vegetable oil fat liquor and a preparation method thereof. The novel synthetic cationic vegetable oil fat liquor is prepared from rapeseed oil, methanol, ethanolamine and quaternary ammonium salt ETA (epoxypropyl trimethyl ammonium chloride) by transesterification between the rapeseed oil and the methanol, amidation reaction between rapeseed oil fatty acid methyl ester and the ethanolamine and reaction between quaternization reagent and a product obtained from amidation reaction. The novel synthetic cationic vegetable oil fat liquor and the preparation method have the advantages that by means of an internal emulsification method, cationic active groups are introduced into rapeseed oil molecular structures, and accordingly, the novel synthetic cationic vegetable oil fat liquor is high in dilution-resisting, acid-resisting, alkali-resisting and chromic-salt-resisting stability; permeation and even distribution of chromium can be promoted, chromium absorption of rawhide is increased, and the novel synthetic cationic vegetable oil fat liquor can serve as a pre-fat-liquoring material before chrome tanning; the novel synthetic cationic vegetable oil fat liquor has excellent oil and color fixation performance, thereby being a preferred material serving as leather dyeing and oil and color fixing after fat liquoring.
Owner:山东黎宁科技新材料有限公司
Quaternary ammonium salt functionalized polysulfone/nano attapulgite hybridized anion exchange membrane and preparation method thereof
ActiveCN110433673AGood hydroxide ion conductivityImprove mechanical stabilityMembranesSemi-permeable membranesQuaternary ammonium cationParaformaldehyde
The invention provides a positively-charged quaternary ammonium salt functionalized polysulfone / nano attapulgite hybridized anion exchange membrane and a preparation method thereof, and belongs to thefield of alkaline anion exchange membrane fuel cells. In the method, trimethylchlorosilane and paraformaldehyde are used as polysulfone chloromethylation reagents, and tin chloride is used as a catalyst; the chloromethylation degree of polysulfone is controlled by controlling the molar ratio of polysulfone to trimethylchlorosilane, paraformaldehyde and tin chloride and the reaction time of chloromethylation; a positively charged quaternary ammonium salt functional group is adopted as a functional group for transmitting OH <-> ions, and the functional group is grafted to chloromethylated polysulfone through a Menschutkin reaction; then, hydrophilic nano attapulgite is adopted as an inorganic additive material and dispersed into a positively charged quaternary ammonium salt functionalized polysulfone solution through high-power ultrasonic, mechanical stirring and other methods, and the positively charged quaternary ammonium salt functionalized polysulfone / nano attapulgite hybrid anion exchange membrane is prepared through a tape casting method.
Owner:HUAIYIN TEACHERS COLLEGE
Preparation method of carbazole polyaromatic piperidine anion exchange membrane
ActiveCN113851683AGood film formingHigh mechanical strengthFinal product manufactureFuel cellsPtru catalystBackbone chain
The invention provides a preparation method of a carbazole polyaromatic piperidine anion exchange membrane, and belongs to the technical field of fuel cells. The carbazole aryl group is introduced into a polymer main chain of aromatic hydrocarbon and piperidone for the first time, and a benzene ring in the carbazole aryl group does not have an internal rotation function, so that the phenyl adsorption effect of a fuel cell catalyst can be effectively reduced, and the performance of a fuel cell is improved. The anion exchange membrane prepared by the invention not only has excellent mechanical stability, but also has excellent OH<-> conductivity (as high as 204.8 mS / cm@90 DEG C); after being soaked in a 1M KOH solution at 80 DEG C for 2100 hours, the conductivity loss is only 3%, and the alkaline resistance is extremely high; when the prepared anion exchange membrane is assembled on a fuel cell, the peak power density reaches up to 1.72 W / cm < 2 >, and meanwhile, the service life of 100 hours can be kept; and the method is simple and easy to implement and low in production cost, and the anion exchange membrane prepared by adopting the method can be applied to the fields of alkaline fuel cells, electrolyzed water, carbon dioxide catalytic reduction and the like.
Owner:CHONGQING UNIV
Multifunctional crosslinked polyarylidene butanedione anion exchange membrane and preparation method thereof
The invention discloses a multifunctional crosslinked polyarylidene butanedione anion exchange membrane and a preparation method thereof, and belongs to the technical field of basic anion exchange membranes. The method comprises the steps that firstly, a dibromo-substituted polyarylidene butanedione polymer with good alkali resistance stability is synthesized, then thermal crosslinking is directlyperformed on the polymer by taking bromine of the polymer as a functionalization site, and then remaining sites are subjected to quaternization to obtain a film material. The prepared membrane has better alkali stability and dimensional stability and higher ionic conductivity, and can be applied to an alkaline fuel cell.
Owner:DALIAN UNIV OF TECH
Alkali-resistant sequestering dispersant and preparation thereof
ActiveCN101280518BGood alkali resistance and stabilityGood compatibilityFibre treatmentDyeing processSulfonateEther
The invention relates to an alkali-resistant sequestering dispersant used in high alkali printing and dyeing process and a preparation method thereof, aiming at the problem that the prior most sequestering dispersants has poor alkali-resistant performance and is difficult to be used suitably in the process condition of high alkali. The alkali-resistant sequestering dispersant provided by the invention is composed of cycloartenyl or cycloartenyl ether, polymerable organic carboxylic acid, alpha-olefin sulfonate, and acrylamide that are polymerized in water solutions under the actions of initiator and molecular weight regulator. The alkali-resistant sequestering dispersant has the advantages of outstanding alkali-resistant stability, strong scale inhibition, scale decomposing, and preventing process defects of open-width pre-treatment effectively.
Owner:传化智联股份有限公司 +2
High-performance navy blue reactive dye composition and application thereof
ActiveCN109294275AHigh color fastnessLow electronegativityReactive dyesDyeing processStructural formulaCoupling reaction
The invention discloses a high-performance navy blue reactive dye composition and application thereof, and belongs to the technical field of reactive dyes. The high-performance navy blue reactive dyecomposition is prepared by mixing 46-53 wt% of a compound as shown in the general structural formula (I), 43-49 wt% of a compound as shown in the general formula (II) and 2-5 wt% of a compound as shown in the general formula (III). The preparation of the compound as shown in the general formula (I) comprises the steps of diazotization reaction and coupling reaction; the preparation of the compoundas shown in the general formula (II) comprises the steps of chromophore preparation and double condensation reaction; and the preparation of the compound as shown in the general formula (III) comprises steps of double condensation reaction, diazotization reaction and coupling reaction. When the dye composition is applied, the dye composition is mixed with a dispersing agent, a dust-proof agent and anhydrous sodium sulphate to prepare a commercial dye, which is applied to dyeing and printing of rayon fabric. The navy blue reactive dye composition has high fixation rate, good stability and excellent process tolerance; and the structure of a spray drying device used in the preparation method is optimized and the application value is high.
Owner:江苏德美科化工有限公司
Alkali-resisting activated dye
ActiveCN105421104AGood alkali resistance and stabilityHigh color fixing rateOrganic dyesDyeing processWater repellentFine chemical
The invention provides alkali-resisting activated dye and belongs to the technical field of fine chemical engineering. The alkali-resisting activated dye is prepared from, by weight, 60-90 parts of dye, 30-50 parts of an alkali-resisting conditioning agent and 10-20 parts of a water repellent agent. In order to solve the problem that dye has many hydrophilic groups, thereby being poor in water resistance and not resistant to water washing, the alkali-resisting activated dye is applied to the commercial production process of dye, the alkali-resisting conditioning agent and the water repellent agent with the certain proportion are added in a commercial dye formula, the molecule groups of the activated dye are wrapped through the water repellent agent, and the hydrophilic groups of the activated dye are obstructed. General mixing equipment is used for directly preparing the alkali-resisting activated dye, and the alkali-resisting activated dye has the advantages of being convenient to apply, good in alkali-resisting stability and the like.
Owner:浙江博耳新材料有限公司
Mercerizing penetrant and preparation method thereof
The invention discloses a mercerizing penetrant and a preparation method thereof. The mercerizing penetrant comprises 20 to 30 wt% of silicon-modified polyether, 10 to 20 wt% of fatty alcohol polyoxyethylene ether sulfate and 10 to 20 wt% of alkyl diphenyl ether sulfonate, with the balance being water, wherein the silicon-modified polyether has a number-average molecular weight of 200 to 2000 g / mol and has a general structural formula as described in the specification. In the formula, R is a straight-chain or branched-chain C6-18 alkyl group; R' is a straight-chain or branched-chain C1-10 alkylene group or a C6-10 arylene group; m is in a range of 1 to 20; n is in a range of 0 to 20; and m and n are both integers. The preparation method for the mercerizing penetrant is simple to operate. Through mutual synergism of the components of the mercerizing penetrant, the prepared mercerizing penetrant has alkali resistance of 300 g / L and shows good penetration performance and alkali resistancestability in an alkali solution with a concentration of 180 to 300 g / L; and the mercerizing penetrant has low foam, does not influence the recovery of alkaline liquor and obviously improves mercerizing effect.
Owner:SHANGHAI DONGDA CHEM
Polyfluorene-based side-chain anion exchange membrane and preparation method thereof
PendingCN113773472AWeaken nucleophilic attackIncrease distancePolymer scienceQuaternary ammonium cation
The invention relates to a polymer anion exchange membrane and a preparation method thereof, in particular to a polyfluorene-based side-chain anion exchange membrane and a preparation method thereof. According to the invention, a series of weak-bond-free polyfluorene high polymer materials are synthesized through Suzuki coupling reaction to serve as a main chain framework of AEMs, in order to maintain the strength of AEMs, a stable alkyl chain segment is introduced into the polyfluorene main chain, the chain flexibility and solubility of polyfluorene are adjusted, the distance between quaternary ammonium cations and aromatic rings on the main chain is adjusted, the polarization effect of the cations on the main chain is reduced, and the alkali resistance of AEMs is improved; the polyfluorene-based polymer is prepared, and a microphase separation structure is constructed to improve the ionic conductivity of a polymer film; and the whole preparation process is simple and efficient.
Owner:CHANGZHOU UNIV
Permeable concrete floor dyeing agent and preparation method thereof
InactiveCN109250949AGood color and alkali resistanceImprove wear resistanceDIHYDROXYPROPYLTRIMONIUM CHLORIDESodium salt
The invention belongs to the technical field of building materials, and discloses a permeable concrete floor dyeing agent, which is composed of the following raw materials (by weight): 20-40% of an organic pigment, 0.01-0.05% of an antifoaming agent, 0.2-0.6% of a dispersing agent, 0.4-0.8% of a stabilizer, 0.1-0.3% of guar hydroxypropyltrimethylammonium chloride, 3-5% of a penetrant, 0.1-1% of dioctyl sulfosuccinate sodium salt, 1-2% of potassium tripolyphosphate, 0.5-0.8% of a pH regulator, and the balance water. The dosage of the dyeing agent is 8-12 m<2> / kg; the dyeing effect is firm; andthe colored concrete floor with the application of the dyeing agent has alkali resistance, water resistance and good temperature difference resistance.
Owner:广东广洁科技有限公司
Main chain type alkaline anion exchange membrane based on ether-bond-free polyfluorene and preparation method thereof
PendingCN113717352AExcellent chemical stabilityHigh reactivityMembranesElectrodialysisAlkaline anion exchange membraneMethylene radical
The invention relates to a polymer anion exchange membrane and a preparation method thereof, in particular to a main chain type alkaline anion exchange membrane based on ether-bond-free polyfluorene and a preparation method thereof. According to the invention, piperidine cations with excellent alkali-resistant stability are selected, and methylene side chain substituted fluorenyl monomers with different sizes at the ninth site are designed and synthesized. The fluorenyl polymer without containing ether bonds is prepared through acid-catalyzed Friedel-Crafts polymerization, so that the chemical stability of the anionic membrane is improved. The whole preparation process is simple and efficient. A methylene side chain is introduced into a hydrophobic segment of a polymer main chain, formation of micro-phase separation in the membrane is promoted, and a high-speed channel is provided for ion transmission, so that the conductivity of the membrane is further improved.
Owner:CHANGZHOU UNIV
Imidazole ionic liquid with high alkali-resistant stability and application of imidazole ionic liquid
ActiveCN102702106BGood alkali resistance and stabilityImprove alkali resistance and stabilityOrganic chemistryChemical structureAlkaline anion exchange membrane
The invention discloses imidazole ionic liquid with high alkali-resistant stability and application of the imidazole ionic liquid. The ionic liquid has the following chemical structure as shown in the text, wherein m is an integer between 0 to 8, n is an integer between 0 to 6, -R is one of FORMULAE, and X is one of I, Br and Cl. The ionic liquid can be used for preparing an anion exchange polymer membrane. The ionic liquid has high alkali-resistant stability; by using the imidazole ionic liquid, the alkali-resistant stability of the alkali anion exchange membrane is greatly improved; and the imidazole ionic liquid can be applied in the field of alkali fuel cells.
Owner:安徽麦基艾迪新材料科技有限公司
Polyethylene polypropylene fiber polymer waterproof rolling material with improved alkali-resistant stability
InactiveCN107857933AGood alkali resistance and stabilityHigh tensile strengthLinear low-density polyethylenePolymer science
The invention discloses a polyethylene polypropylene fiber polymer waterproof rolling material with improved alkali-resistant stability. The polyethylene polypropylene fiber polymer waterproof rollingmaterial is prepared from the following components in parts by weight: 90.0 to 95.0 parts of linear low-density polyethylene resin, 0.5 to 1.5 parts of carbon black, 0.1 to 0.5 part of a dispersing agent and 5.0 to 10.0 parts of an activating agent, wherein the activating agent is obtained through a preparation method comprising the following steps: (1) pressurizing treatment: putting fructus momordicae grosvenori residue after water extraction into a high-pressure tank, pressurizing to 3kg / cm<2>, making the pressure be constant, keeping the constant pressure, and then instantly releasing thepressure; (2) high shear homogenizer treatment: adding a material obtained in the step (1) into purified water of which the weight is equal to that of thematerial, treating through a high shearing homogenizer, and drying, thus obtaining the activating agent.
Owner:GUILIN HEXIN WATERPROOF DECORATION MATERIAL
A kind of desizing agent and preparation method thereof
ActiveCN108505318BWith desizing effectImprove desizing effectDry-cleaning apparatus for textilesGrip property fibresEthylhexyl palmitatePyrrolidinones
The invention aims at overcoming the defects in the prior art, and provides a desizing agent with the advantages that the desizing effect is good; the damage on fabrics is small; the treated fabrics have a good wool effect, hand feeling and whiteness; in addition, the seepage performance and the dispersion performance are good; the refining effect is achieved. The invention provides the desizing agent, which is prepared from the following ingredients in parts by weight: 2 to 8 parts of sodium hydroxide, 15 to 20 parts of nonylphenol polyoxyethylene ether, 5 to 10 parts of dodecyl trimethyl ammonium chloride, 5 to 10 parts of glyceryl cocoate, 2 to 7 parts of coconut acid monoisopropanolamide, 6 to 12 parts of isocetyl stearate, 1 to 3 parts of polydimethylsiloxane, 2 to 6 parts of sodium laurate, 4 to 8 parts of glycol, 1 to 4 parts of polyvinylpyrrolidone, 2 to 6 parts of ammonium persulfate, 1 to 4 parts of potassium chloride, 1 to 4 parts of nano-zinc oxide, 2 to 5 parts of ethylhexyl palmitate, 8 to 15 parts of propyl alcohol and 25 to 35 parts of water. The desizing rate of the fabrics treated by the desizing agent provided by the invention is 96.1 percent or higher; in addition, the fabrics cannot be damaged.
Owner:多恩生物科技有限公司
Polyethylene polypropylene fiber macromoleculewaterproof roll
InactiveCN107936355AGood alkali resistance and stabilityHigh tensile strengthFlat articlesLinear low-density polyethylenePhthalocyanine
The invention discloses a polyethylene polypropylene fiber macromoleculewaterproof roll which consists of the following components in parts by weight: 92.0-95.0 parts of a linear low density polyethylene resin, 0.5-1.5 parts of phthalocyanine blue, 0.1-0.5 part of a dispersant and 5.0-8.0 parts of an activator, wherein the activator is prepared from the following steps: (1) performing steam explosion treatment, namely performing steam explosion treatment on momordica grosvenori residues extracted with water in a steam tank; (2) performing high-shearing homogenizer treatment, namely putting anequal amount of pure water into the material obtained in the step (1), performing high-shearing homogenization treatment, and drying, thereby obtaining the activator.
Owner:GUILIN HEXIN WATERPROOF DECORATION MATERIAL
A kind of preparation method of semi-flexible polyethersulfone/ketone anion exchange membrane
ActiveCN105482118BImprove mechanical propertiesHigh ion conductivityCell electrodesFuel cellsPolymer science
The invention discloses a preparation method of a semi-flexible polyether sulfone / ketone anion-exchange membrane, and particularly provides a preparation method of a high-conductivity anion-exchange membrane of a fuel cell. The membrane material contains flexible aliphatic chains with different lengths in repetitive units. The preparation method comprises steps as follows: 1), polymer synthesis; 2), polymer halomethylation; 3), preparation of the semi-flexible polyether sulfone / ketone anion-exchange membrane. Due to the fact that the aliphatic chains are introduced into a main polymer chain, the flexibility of the main chain is further improved, the main chain acquires higher mobility, hydrophilic and hydrophobic microphase separation is enhanced, a better ion channel is formed accordingly, and membrane swelling is reduced. The preparation technology is simple, the cost is low, and the prepared anion-exchange membrane has high conductivity and good stability and is applicable to an alkaline fuel cell.
Owner:DALIAN UNIV OF TECH
Polyarylether anion-exchange membrane material containing n-spirocyclic quaternary ammonium salt group in side chain and preparation method thereof
ActiveCN109762190BImprove thermal stabilityImprove mechanical propertiesPolymer sciencePoly ether ether ketone
The invention discloses a polyarylether anion-exchange membrane material with N-spirocyclic quaternary ammonium salt groups in its side chain and a preparation method thereof, belonging to the technical field of polymer materials and preparation thereof. The present invention firstly synthesizes side chain-containing bisphenol monomer 3,4-dimethylphenyl hydroquinone, and then carries out polycondensation reaction of the monomer with difluoro end-group monomer and non-methylphenyl bisphenol The polyether ether ketone polymer containing methyl phenyl in the side chain is prepared by brominating two methyl groups on the benzene ring of the side chain, quaternizing with hexahydropyrrole, piperidine or hexamethyleneimine, The anion exchange membrane material applicable to alkaline fuel cells is obtained through alkalization and water washing processes. The film material prepared by the present invention contains rigid group phenyl group, flexible group ether bond and N-spiro ring quaternary ammonium salt group, and can have good thermal stability, mechanical properties, alkali resistance stability and higher Ionic conductivity, has good development prospects.
Owner:青岛豪恩新材料科技有限公司
A kind of carbon nanotube doped basic anion exchange composite membrane and its preparation method and application
InactiveCN103521276BImprove hydroxide ion conductivityGood alkali resistance and stabilityFinal product manufactureAnion exchangersFuel cellsPolyvinyl alcohol
Owner:DONGHUA UNIV
A kind of novel cationic polymer leather fatliquoring agent and preparation method thereof
Owner:QILU UNIV OF TECH
Preparation method of novel organic-inorganic composite anion proton exchange membrane
InactiveCN112321865AExtended service lifeGood alkali resistance and stabilityFuel cellsPoly ether ether ketoneIonic conductivity
The invention relates to a preparation method of a proton exchange membrane for a fuel cell, and belongs to the technical field of energy materials. Modified octa(cobaltocenyl)-POSS is introduced intoa solution of functional polymer materials such as polyimide, polybenzimidazole, polyether-ether-ketone, polyether sulfone and the like, and the high-performance anion proton exchange membrane can beconveniently obtained through a solution casting method. The preparation method is short in process and simple to operate, and meanwhile, compared with a commercial anion proton exchange membrane, the exchange membrane prepared on the basis of the preparation method has high ionic conductivity, excellent alkaline functional group stability, high mechanical strength and low swelling property. Besides, POSS with good organic compatibility is introduced, and the organic-inorganic special structure of POSS is utilized, so that the formation of an effective micro-phase separation structure is promoted, the proton conductivity of the composite membrane is improved to a certain extent, and the composite membrane has a wide application prospect in the field of anion proton exchange membranes.
Owner:邓伯涵
Polyethylene polypropylene fiber high molecular waterproof roll with good alkali-resistant stability
InactiveCN107915893AGood alkali resistance and stabilityHigh tensile strengthSynthetic resin layered productsLaminationLinear low-density polyethyleneMomordica grosvenori
The invention discloses a polyethylene polypropylene fiber high molecular waterproof roll with good alkali-resistant stability. The roll is prepared from the following components in parts by weight: 90.0-95.0 parts of linear low density polyethylene resin, 0.5-1.5 parts of carbon black, 0.1-0.5 part of a dispersant and 5.0-10.0 parts of an activator. The activator is prepared from the following methods: (1) carrying out steam explosion treatment, namely putting water extracted momordica grosvenori residues in a steam explosion tank to treat; and (2) carrying out high shear homogenizer treatment, namely adding pure water equal in weight into the material obtained in the step (1), carrying out treatment by a high shear homogenizer, and drying the mixture to obtain the activator.
Owner:GUILIN HEXIN WATERPROOF DECORATION MATERIAL
A method for purifying nonapeptide-1
ActiveCN113952944BReduce lossesHigh yieldOther chemical processesPeptide preparation methodsFluid phasePhysical chemistry
Owner:浙江湃肽生物股份有限公司深圳分公司
A kind of preparation method of cationic synthetic vegetable oil fatliquor
ActiveCN104831004BExcellent stability against dilutionGood alkali resistance and stabilityPreparation by ester-hydroxy reactionOrganic compound preparationVegetable oilTransesterification
Disclosed are a novel synthetic cationic vegetable oil fat liquor and a preparation method thereof. The novel synthetic cationic vegetable oil fat liquor is prepared from rapeseed oil, methanol, ethanolamine and quaternary ammonium salt ETA (epoxypropyl trimethyl ammonium chloride) by transesterification between the rapeseed oil and the methanol, amidation reaction between rapeseed oil fatty acid methyl ester and the ethanolamine and reaction between quaternization reagent and a product obtained from amidation reaction. The novel synthetic cationic vegetable oil fat liquor and the preparation method have the advantages that by means of an internal emulsification method, cationic active groups are introduced into rapeseed oil molecular structures, and accordingly, the novel synthetic cationic vegetable oil fat liquor is high in dilution-resisting, acid-resisting, alkali-resisting and chromic-salt-resisting stability; permeation and even distribution of chromium can be promoted, chromium absorption of rawhide is increased, and the novel synthetic cationic vegetable oil fat liquor can serve as a pre-fat-liquoring material before chrome tanning; the novel synthetic cationic vegetable oil fat liquor has excellent oil and color fixation performance, thereby being a preferred material serving as leather dyeing and oil and color fixing after fat liquoring.
Owner:山东黎宁科技新材料有限公司
A kind of alkali resistant reactive dye
ActiveCN105421104BGood alkali resistance and stabilityHigh color fixing rateOrganic dyesDyeing processFine chemicalPhotochemistry
Owner:浙江博耳新材料有限公司
A kind of hydrophilic long side chain alkaline anion exchange membrane and preparation method thereof
ActiveCN107968214BImprove ionic conductivityGood alkali resistance and stabilityFuel cellsIonic ChannelsIon-exchange membranes
The invention provides a hydrophilic long-side chain alkali negative ion exchange membrane and a preparation method thereof, and belongs to the technical field of a negative ion exchange membrane. Thepreparation method of the hydrophilic long-side chain alkali negative ion exchange membrane comprises the steps of firstly, synthesizing bromide; and secondly, synthesizing a long-side chain-containing imidazole compound by the bromide, introducing the group into a main chain material, and preparing a target film material by film formation. By building hydrophilic / hydrophobic micro-phase separation, a better ion passage is formed, the hydroxyl conductivity of the membrane is improved, and the hydrophilic long-side chain alkali negative ion exchange membrane has good application prospect. Moreover, the process of preparing the alkali negative ion exchange membrane has the advantages of greenness, no pollution and cheap and rich raw material and is simple to operate.
Owner:DALIAN UNIV OF TECH
Polyfluorene ether nitrile cross-linked anion exchange membrane material functionalized with cationic groups for fuel cells and preparation method thereof
ActiveCN106784946BMaintain dimensional stabilityMaintain mechanical propertiesFinal product manufactureFuel cellsCross-linkBenzoyl bromide
The invention discloses a poly(fluorenyl ether nitrile) crosslinked anion exchange membrane material with functionalized cationic groups for a fuel cell and a preparation method of the poly(fluorenyl ether nitrile) crosslinked anion exchange membrane material, and relates to the technical field of anion exchange membranes. According to the invention, a poly(fluorenyl ether nitrile) polymer with a benzyl methyl group is produced by a nucleophilic polycondensation reaction; then a poly(fluorenyl ether nitrile) polymer with benzyl bromide is produced by a bromination reaction; then a poly(fluorenyl ether nitrile) polymer with functionalized cationic groups is produced by a quaternization reaction; at last, through adding a crosslinked agent, the poly(fluorenyl ether nitrile) crosslinked anion exchange membrane material with functionalized cationic groups is produced by a solution blending method. At 80 DEG C, the ionic conductivity is 0.051S / cm-0.089S / cm; at 30 DEG C, the methanol permeability coefficient is 0.96x10<-7>cm<2>s<-1>-1.56x10<-7>cm<2>s<-1>. After being soaked in a NaOH solution with the concentration of 2mol / L at 60 DEG C for 10 days, the crosslinked membrane remains the ionic conductivity of 60.0-77.5%, indicating that the crosslinked anion exchange membrane has excellent stability in alkali resistance. Compared with a perfluorosulfonic acid film, the composite proton exchange membrane produced in the invention is lower in cost and easy to be industrialized and can be applied in the fuel cell field.
Owner:CHANGCHUN UNIV OF TECH
Polyethylene polypropylene fiber high polymer waterproof rolling material for improving artificial weathering aging performance
InactiveCN107984835AGood alkali resistance and stabilityHigh tensile strengthSynthetic resin layered productsLinear low-density polyethylenePolymer science
The invention discloses a polyethylene polypropylene fiber high polymer waterproof rolling material for improving artificial weathering aging performance. The polyethylene polypropylene fiber high polymer waterproof rolling material is composed of the following components in parts by weight: 92.0-95.0 parts of linear low density polyethylene resin, 0.5-1.5 parts of titanium oxide, 0.1-0.5 part ofa dispersing agent and 5.0-8.0 parts of an active agent, wherein the active agent is prepared by the following steps: (1) carrying out steam explosion treatment, namely adding momordica grosvenori subjected to water extraction into a steam explosion tank to be treated; and (2) carrying out treatment of a high shear mixer, namely adding purified water in equivalent weight, treating by the high shear mixer, and drying, thereby obtaining the active agent.
Owner:GUILIN HEXIN WATERPROOF DECORATION MATERIAL
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