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44 results about "Isobutylamine" patented technology
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Isobutylamine is an organic chemical compound (specifically, an amine) with the formula (CH₃)₂CHCH₂NH₂, and occurs as a colorless liquid. Isobutylamine is one of the four isomeric amines of butane, the others being n-butylamine, sec-butylamine and tert-butylamine. It is the decarboxylated form of the amino acid valine, and the product of the metabolism thereof by the enzyme valine decarboxylase.
(S)-alpha-phenethylamine: pyruvate transaminase
Relating to an enzyme capable of efficiently converting a ketone compound to an optically active amino compound by transamination, and a process for preparing an optically active amino compound using the enzyme. An (S)-alpha-phenethylamine:pyruvate transaminase, which acts on (S)-alpha-phenethylamine and a ketone compound, thereby catalyzing transamination for forming acetophenone and an amino compound corresponding to the ketone compound; a process for preparing an optically active amino compound using the transaminase; and a method for culturing a microorganism for producing the above transaminase, comprising adding to a medium one or more compounds selected from the group consisting of propylamine, 1-butylamine, 2-butylamine, 2-pentylamine, isopropylamine and isobutylamine as an inducer for the enzyme when a microorganism for producing (S)-alpha-phenethylamine:pyruvate transaminase is cultured.
Owner:KANEKA CORP
Method for synthesizing di-[propyltriethoxysilane]-tetrasulfide
InactiveCN101885734AImprove stabilityIncrease contentSilicon organic compoundsHydroxylamineDistillation
The invention discloses a method for synthesizing di-[propyltriethoxysilane]-tetrasulfide, which comprises the following steps of: (1) mixing and stirring water, sodium sulfide, sodium hyposulfate, elemental sulfur and diethyl hydroxylamine, pumping n-amylamine and isobutylamine into the mixture under the vacuum degree of 0.04 to 0.06MPa, and reacting the mixture for 20 to 40 minutes at the temperature of between 30 and 50 DEG C; (2) adding dodecyltrimethylammonium chloride, tetrabutyl ammonium bromide and hydroxy pyridine into the reaction solution obtained in the (1) under normal pressure, stirring the solution, then adding gamma-chloropropyltriethoxysilane into the solution, reacting the solution for 30 to 60 minutes at the temperature of between 40 and 50 DEG C, continuously reacting the solution for 60 to 80 minutes at the temperature of between 60 and 80 DEG C, filtering the oil phase, and pumping the filtrate into a distillation still; and (3) distilling the filtrate in the distillation still under the vacuum degree of more than or equal to 0.096MPa at the temperature of less than or equal to 160 DEG C when the temperature of the top gas phase is more than 108 DEG C to obtain a product Si-69.
Owner:WEIFANG WORLD CHEM
Method for preparing 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-benzene butyl]-N-isobutyl benzsulfamide
ActiveCN104387299ALow costImprove stabilitySulfonic acid amide preparationP-nitrobenzenesulfonyl chlorideNitro reduction
The invention discloses a method for preparing 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-benzene butyl]-N-isobutyl benzsulfamide. The method comprises the following steps: S1: enabling L-phenylalanine and diazomethane to react to obtain a diazo methyl ketone intermediate product, and enabling the diazo methyl ketone intermediate product and haloid acid to react to obtain a compound A; S2, conducting carbonyl deoxidation on the compound A to obtain a compound B; S3, under the existence of iso-butylamine, conducting cyclization reaction and ring-opening reaction on the compound B in sequence to obtain a compound C; S4, enabling the compound C and nitrobenzenesulfonyl chloride to react to obtain a compound D; S5, conducting nitro reduction on the compound D to obtain the 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-benzene butyl]-N-isobutyl benzsulfamide. The method is simple in course, low in cost, mild in condition, and higher in intermediate product stability, and is beneficial for industrial application.
![Method for preparing 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-benzene butyl]-N-isobutyl benzsulfamide](https://images-eureka.patsnap.com/patent_img/a8d980e4-fe1e-488c-8f1b-65059c0e6bf2/HDA0000592763380000011.PNG "Method for preparing 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-benzene butyl]-N-isobutyl benzsulfamide")
![Method for preparing 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-benzene butyl]-N-isobutyl benzsulfamide](https://images-eureka.patsnap.com/patent_img/a8d980e4-fe1e-488c-8f1b-65059c0e6bf2/HDA0000592763380000021.PNG "Method for preparing 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-benzene butyl]-N-isobutyl benzsulfamide")
![Method for preparing 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-benzene butyl]-N-isobutyl benzsulfamide](https://images-eureka.patsnap.com/patent_img/a8d980e4-fe1e-488c-8f1b-65059c0e6bf2/HDA0000592763380000031.PNG "Method for preparing 4-amino-N-[(2R,3S)-3-amino-2-hydroxy-4-benzene butyl]-N-isobutyl benzsulfamide")
Owner:ASYMCHEM LAB TIANJIN +4
Preparation method of rubber vulcanization accelerator tetra(isobutyl)thioperoxydicarbamic acid (TiBTD)
The invention provides a preparation method of a rubber vulcanization accelerator tetra(isobutyl)thioperoxydicarbamic acid (TiBTD). In the method, the rubber vulcanization accelerator TiBTD comprises 1 portion of diisobutylamine, 1.26-1.28 portions of carbon bisulfide, 0.49-0.53 portion of oxidant and 0.015-0.019 portion of anionic surfactant. The method comprises the following steps: orderly adding specified amounts of di-iso-butylmanice, alcohols or water, and anionic surfactant into a 2000L enamel reaction kettle while stirring; starting cooling water, cooling to 42-46 DEG C, and dropwise adding accurately metered carbon bisulfide liquid for 6-7 hours; after dropwise adding finishes, measuring the pH value of the reactant liquor to 8-9, and after the pH value becomes stable, and starting to dropwise add oxidant at 58-62 DEG C to carry out oxidation reaction for 5-6 hours; and after the oxidation finishes, keeping the temperature to react for 1 hour, carrying out solid-liquid separation, discarding the liquid, drying the solid, pulverizing, screening and packaging. The oxidant is hydrogen peroxide or sodium hypochlorite, and the anionic surfactant is sodium dodecylsulfate.
Owner:WILLING NEW MATERIALS TECH CO LTD
LC-MS/MS positive ion mode detection method of EDTA in wine
InactiveCN105203664AAdvantages of preprocessing methodsAccurate detectionComponent separationBoronic acidTandem mass spectrometry
The invention discloses an LC-MS / MS positive ion mode detection method of EDTA in food (particularly wine). The method comprises the steps that 1, a sample to be detected is pretreated, wherein 11, the sample to be detected is sucked into a container capable of being closed, a 20.0 mg / L boric acid solution and a 10% amine methanol solution (preferentially, a 10% butyl amine methanol solution) are added, and the container is closed for even mixing; 12, the solution obtained through the step 11 passes through a microporous filtering film with the pore diameter being 0.1-0.5 micrometer to obtain a filtrate; 2, the filtrate is placed into a sample bottle, then, an amine methanol solution is added, sufficient and even shaking is carried out, and then detection is carried out through liquid chromatogram and tandem mass spectrum. The method can qualitatively and quantitatively analyze and detect EDTA in food such as wine, and is good in stability, accurate and sensitive, the qualitative limit is 0.0001 mg / kg, and the quantitative limit is 0.001 mg / kg; the detection method is simple, method errors are avoided, consumed time is short, energy consumption is low, and the application and popularization prospect is good.
Owner:INSPECTION & QUARANTINE TECH CENT OF GUANGDONG ENTRY EXIT INSPECTION & QUARANTINE BUREAU
Wild pepper nutrient solution as well as preparation method and application thereof
InactiveCN108976046AIncreased essential oil contentIncrease the content of numbing substancesAlkali orthophosphate fertiliserAmmonium orthophosphate fertilisersFlavorPotassium
The invention provides a wild pepper nutrient solution. The wild pepper nutrient solution is prepared from the following raw materials in parts by weight: 10-90 parts of isobutylamine, 2-6 parts of nitrogen fertilizer, 2-6 parts of phosphate fertilizer, 2-6 parts of potassium fertilizer and 410-500 parts of water. Meanwhile, the invention further provides a preparation method and concrete application of the wild pepper nutrient solution. The wild pepper nutrient solution provided by the invention can significantly improve the essential oil content and numb flavor substance content of wild pepper when injected into wild pepper trees, the numb flavor taste of the wild pepper is increased, and the quality of the wild pepper is improved.
Owner:陕西为康生物科技股份有限公司
Bio-diesel
The invention discloses a bio-diesel which comprises the following components by parts by weight: 20-40 parts of degummed vegetable oil, 20-40 parts of degreased animal oil, 20-40 parts of coking light oil, 0.1-0.2 part of dimethyl sulfoxide, 0.2-0.4 part of T1201-1 high-performance stabilizer, 0-6 parts of No.6 solvent oil, 0.2-0.3 part of anisole and 1.4-1.8 parts of antioxidant of isobutylamine. The preparation process is simple, compared with the prior art, the production cost is significantly reduced. The bio-diesel has high safety performance during the use process, the transportation process and the storage process, and the antiknock performance is strong.
Owner:HEBEI ZHONGZHEN PETROCHEM TRADE
Synthetic method of 2-(2-nitroethylenyl)-furan and its purpose as anti-coccidium agent
InactiveCN1571780ASatisfied with the resultOrganic active ingredientsOrganic chemistry methodsFuranActivated carbon
The invention relates to a method of obtaining and purifying 2-(2-nitrovinyl)furane consisting in reacting furfural and nitromethane, using isobutylamine as a catalyst and activated carbon as an adsorbent, in order to obtain a product of pharmaceutical quality. Said technique considerably reduces the environmental impact by eliminating the gaseous waste from the system by means of absorption in water. The inventive pharmaceutical composition contains 2-(2-nitrovinyl)furan and has powerful action against low concentrations of coccidia.
Owner:CENT DE BIOACTIVOS QUIMICOS CBQ
Blue-light perovskite light-emitting diode and preparation method thereof
ActiveCN112993177AImprove external quantum efficiencyEasy to prepareSolid-state devicesSemiconductor/solid-state device manufacturingHydrobromideHole transport layer
Owner:SOUTH CHINA UNIV OF TECH
Catalyst used for production of isobutylamine and diisobutylamine, and using method thereof
ActiveCN110152714AHigh activityLow priceMolecular sieve catalystsOrganic compound preparationMolecular sieveIsobutanol
The invention discloses a catalyst used for production of isobutylamine and diisobutylamine. According to the catalyst, a mixture of meerschaum and zeolite molecular sieve are taken as carriers, and the carrier is subjected to secondary deposition and secondary roasting for loading with nickel, chromium, silver, and iridium elements as active sites. The catalyst is long in service life, and low incost. The catalyst is used for isobutanol amination synthesis of isobutylamine and diisobutylamine, and characteristics such as high activity and selectivity in an invention condition range are achieved.
Owner:ZHEJIANG JIANYE CHEM
Amine salts of carboxylic acid herbicides
InactiveUS20180303092A1Easy to controlBiocideAmino preparation from aminesN-methylaminoethanolCarboxylic acid
The invention generally involves combining specialty amines with herbicidal carboxylic acids to form a new generation of salts with improved characteristics. The salts contain a cation of an amine and an anion of a carboxylic acid herbicide. The amine is advantageously selected from mono-isobutylamine (MIBA), N-methylaminoethanol (MMEA), dimethylaminopropylamine (DMAPA), 2-dimethylaminoethanol (DMAE), methyldiethanolamine (MDEA), and 1,2-diaminopropane (1,2-DAP). The amine-herbicide combinations may possess one or more improved characteristics, including maximum loading, wettability, drift, viscosity, and volatilization.
Owner:TAMINCO NV
Recombinant escherichia coli for producing isobutylamine as well as construction method and application of recombinant escherichia coli
ActiveCN112852695AIncrease productivityIncrease productionBacteriaMicroorganism based processesEscherichia coliStreptomyces
The invention discloses recombinant escherichia coli for producing isobutylamine as well as a construction method and an application of the recombinant escherichia coli. According to the present invention, the Escherichia coli Sval031 is adopted as the starting strain, the gene of the L-valine decarboxylase derived from Streptomyces viridifaeces is integrated to the starting strain, the expression intensity of the valine decarboxylase is improved by using the M1-93 promoter through the gene expression intensity regulation and control on the chromosome so as to obtain the isobutylamine high-yield strain ISO-001, the isobutylamine yield can achieve 52.7 g / L, and the conversion rate can reach 0.92 mol / mol. In order to further improve the production efficiency of the isobutylamine, the inventor of the invention optimizes the expression intensity of the VlmD gene by using an RBS library regulation technology, the strain ISO-I with higher production efficiency of the isobutylamine is obtained, and the yield of the isobutylamine is further improved by 66.4 g / L. The method realizes industrial fermentation production of isobutylamine, and has very strong industrial application potential.
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI
Preparation method of granular diisobutylthiuram disulfide
ActiveCN111116440AWon't happenImprove problems such as sticky substancesOrganic chemistryVulcanizationActive agent
The invention relates to the field of preparation of rubber vulcanization accelerators, and particularly provides a preparation method of granular diisobutylthiuram disulfide. The preparation method comprises the following steps: (a) mixing diisobutylamine, liquid caustic soda and carbon disulfide for a reaction to obtain a sodium diisobutyldithiocarbamate solution, (b) uniformly mixing the sodiumdiisobutyldithiocarbamate solution, a seed crystal and a surfactant, wherein the seed crystal comprises diisobutylthiuram disulfide powder, and (c) mixing the solution obtained in the step (b) with H2SO4 and H2O2 to obtain the granular diisobutylthiuram disulfide. According to the method, the seed crystal and the surfactant are introduced in the technological process, the granular diisobutylthiuram disulfide can be directly obtained after a reaction, subsequent processes such as crushing and granulation are not needed, the production period is greatly shortened, the energy consumption is low,the occupied area is small, a large amount of dust cannot be generated, the environmental protection property is good, and the product yield and purity are high.
Owner:WILLING NEW MATERIALS TECH CO LTD
Perovskite single crystal and preparation method and application thereof
ActiveCN113105334AEasy to prepareQuality improvementPolycrystalline material growthFrom normal temperature solutionsCrystallographyPhotovoltaic detectors
The invention provides a perovskite single crystal and a preparation method and application thereof. The chemical formula of the perovskite single crystal is A2SnI4, wherein A is selected from one of n-butylamino, isobutylamino, 2-phenylethylamino, 2-fluorophenylethylamino, 3-fluorophenylethylamino and 4-fluorophenylethylamino. The low-dimensional tin-based perovskite single crystal prepared by the invention can be used for a photoelectric detector and shows obvious distinguishing on polarized light.
Owner:SHANGHAI TECH UNIV
Process for co2 capture from gaseous streams
ActiveUS20200070091A1Reduce carbon dioxide emissionsGas treatmentOther chemical processesPoly dl lactideLactide
A process for selective capture of CO2 from gaseous mixture comprising of: (a) spraying a bio-amine cluster; (b) capturing CO2 through bio-amine cluster; and (c) desorption of CO2 through solar assisted electro de-amination, wherein the bio-amine cluster is comprises of: an amine cluster comprising of a quaternary Isobutylamine (IB) with amine terminated Poly(L-lactide) as the chelating agent; a cluster stabilizing agent; a cluster micelle stabilizing agent; and a carbonic anhydrase (CA) functionalized matrix in 0.05-0.2 wt % of total wt % of bio-amine cluster and wherein the CA is obtained from a source selected from the group consisting of Bacillus thermoleovorans, Pseudomonas fragi, Bacillus stearothermophilus and Arthrobacter sp. and a process for production of bio-amine cluster.
Owner:INDIAN OIL CORPORATION
R-(-) / s-(+)-7-[3-n substituted amino-2 hydroxypropoxy] flavones
The present invention provides an optically active compound of general formula (I) and salts thereof: wherein R′ is selected from a group consisting of t-butyl amine, n-butylamine, iso-butylamine, iso-propyl amine, 4-phenyl-piperazine-1-ylamine, 4-(2-methoxyphenyl)-piperazin-1-ylamine, and 3,4-dimethoxy phenethyl amine; wherein R1, R2 and R3 are selected from the group consisting of hydrogen, methyl or iso pentenyl; R4, R5 and R6 are selected from the group consisting of Oil, O-alkyl, O-benzyl, O-substituted phenyl or combination thereof.
![R-(-) / s-(+)-7-[3-n substituted amino-2 hydroxypropoxy] flavones](https://images-eureka.patsnap.com/patent_img/03827433-3654-4de5-b8a6-6b76e304fd7d/US20110077294A1-20110331-C00001.png "R-(-) / s-(+)-7-[3-n substituted amino-2 hydroxypropoxy] flavones")
![R-(-) / s-(+)-7-[3-n substituted amino-2 hydroxypropoxy] flavones](https://images-eureka.patsnap.com/patent_img/03827433-3654-4de5-b8a6-6b76e304fd7d/US20110077294A1-20110331-C00002.png "R-(-) / s-(+)-7-[3-n substituted amino-2 hydroxypropoxy] flavones")
![R-(-) / s-(+)-7-[3-n substituted amino-2 hydroxypropoxy] flavones](https://images-eureka.patsnap.com/patent_img/03827433-3654-4de5-b8a6-6b76e304fd7d/US20110077294A1-20110331-C00003.png "R-(-) / s-(+)-7-[3-n substituted amino-2 hydroxypropoxy] flavones")
Owner:COUNCIL OF SCI & IND RES
A blue light perovskite light-emitting diode and preparation method thereof
ActiveCN112993177BImprove external quantum efficiencyEasy to prepareSolid-state devicesSemiconductor/solid-state device manufacturingHole transport layerLight-emitting diode
Owner:SOUTH CHINA UNIV OF TECH
Peptoid targeting Abeta42 fibrosome as well as preparation method and application thereof
PendingCN113929744AHigh affinityHigh sensitivityNervous disorderPeptide/protein ingredientsAmnesiaFurfurylamine
The invention relates to the technical field of biomedicine, and particularly discloses a peptoid targeting Abeta42 fibrosome as well as a preparation method and application thereof. The peptoid comprises a first subunit: cysteine, a second subunit: 1,4-butanediamine, a third subunit: isobutylamine, a fourth subunit: ethanolamine, a fifth subunit: furfuryl amine, a sixth subunit: isobutylamine and a seventh subunit: 1, 4-butanediamine. The peptoid provided by the invention can be combined with a surface plasmon resonance imaging technology to detect Alzheimer's disease or amnesia mild cognitive impairment, and has the advantages of high specificity and strong sensitivity. In addition, the content of Abeta42 fibrosome in blood can be noninvasively and directly detected, the AD patients and normal people can be effectively distinguished by identifying AD marker amyloid protein in serum, and a new liquid biopsy method and thought are provided for diagnosing and monitoring the progress of the Alzheimer's disease or the amnesia mild cognitive impairment and medicine research and development.
Owner:THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
Preparation method of guineensine
InactiveCN109705085AMeet the problem of insufficient supplyThe synthesis method is simpleOrganic chemistryEthyl chloroformateTungstate
A synthesis method of guineensine includes steps of: 1) performing a nucleophilic reaction on a compound A with 1-phenyl-5-thiol-1H-1,2,3,4-tetrazole under alkaline conditions to obtain a compound B;2) oxidizing the compound B with ammonium tungstate and hydrogen peroxide to give compound C; 3) oxidizing a compound D to obtain a compound E; 4) mixing and stirring the compound C and compound E under alkaline condition at -78 DEG C to obtain a compound F; 5) in the presence of n-butyllithium, adding ethyl chloroformate to the compound F to obtain a compound G at -78 DEG C; 6) refluxing the compound G with triphenylphosphine and phenol in a toluene solvent to prepare a compound H; 7) performing ester group hydrolysis on the compound H with NaOH in a mixed solvent of ethanol / water to preparea compound I; 8) condensing the compound I with isobutylamine to obtain the guineensine J. The structure formulas of the compound A, B, C ... J are represented as the specification. The guineensine can overcome the defects of a natural extract, ganoderiol, and is suitable for pharmaceutical preparation technology.
Owner:周亚伟
Neutralizing corrosion inhibitor and application thereof
The invention relates to a neutralizing corrosion inhibitor composition. The neutralizing corrosion inhibitor composition is prepared from components including (1) a water-soluble corrosion inhibitorcomposition and (2) an organic amine neutralizer; the water-soluble corrosion inhibitor composition is prepared from imidazoline amide of the following structure, a surfactant and a solvent; the structure of the imidazoline amide is shown in the specification, wherein n ranges from 8 to 17, and m ranges from 1 to 5; preferably, n is 8 or 17, and m is 2 or 3; the surfactant is selected from peregaland TX10; the solvent is selected from water and / or ethanol; and the organic amine neutralizer is selected from one or more of triethylamine, ethanolamine, ethylenediamine, n-butylamine, 1,2-propanediamine, 1,3-propane diamine, isobutylamine, dimethylethanolamine and diethyl ethylenediamine. According to the composition, the use amounts of the water-soluble corrosion inhibitor and the neutralizer are small, and the corrosion-resistant effect is excellent through cooperative use of the water-soluble corrosion inhibitor and the neutralizer.
Owner:广东粤首新科技有限公司
Synthetic bio-based gasoline
The invention discloses synthetic bio-based gasoline, and belongs to the synthetic gasoline technical field. The synthetic bio-based gasoline is composed of the following components by the weight percentage: 47-70% of gasoline, 10-15% of a liquefied gas residual liquid, 15-30% of mixed alcohol, and 5-8% of a bio-based additive, wherein the bio-based additive includes refined palm oil, acetone, isopropanol, butanol, isobutylamine, 2,6-di-tert-butyl-4-methylphenol, polyisobutylene succinic imide, dodecenylsuccinic acid, and N,N'-bis(salicylidene)propanediamine. The synthetic bio-based gasoline saves non-renewable petroleum resources, reduces environmental pollution, effectively improves the gasoline quality, is stable in performance, sufficient in power and good in corrosion prevention and rust prevention performance, has no side effect, and is beneficial for transition and stress relieving in a new energy source research and development period.
Owner:康建国
Method for synthesizing diisobutylamine, catalyst and catalyst preparation method
ActiveCN113231064AHigh selectivityHigh activityOrganic compound preparationCatalyst activation/preparationIsobutanolPtru catalyst
The invention discloses a synthesis method of diisobutylamine, which has the advantages of high selectivity of diisobutylamine, low cost, high yield, safety and environmental friendliness. The invention also discloses a catalyst and a preparation method of the catalyst. The method comprises the following steps: vaporizing isobutanol and ammonia, carrying out an ammonification reaction in the presence of hydrogen through a fixed bed reactor filled with a Co catalyst, and carrying out distillation separation after the reaction to obtain synthetic diisobutylamine. According to the method, the reaction pressure is 0.5-3 MPa, the reaction temperature is 100-250 DEG C, the molar ratio of alcohol to ammonia to hydrogen is (1-5): 1: (2-4), and the alcohol feeding space velocity is 0.1-0.8 h <-1 >. The method for synthesizing diisobutylamine is high in conversion rate, high in selectivity, low in cost, good in safety and environment-friendly.
Owner:ZHEJIANG JIANYE CHEM
A recombinant Escherichia coli producing isobutylamine and its construction method and application
ActiveCN112852695BIncrease productivityIncrease productionBacteriaMicroorganism based processesBiotechnologyIndustrial fermentation
Owner:TIANJIN INST OF IND BIOTECH CHINESE ACADEMY OF SCI
ZSM-22/ZSM-23 composite molecular screen and its preparation method
InactiveCN1769173BSuitable for acidityHigh yieldCrystalline aluminosilicate zeolitesMolecular sieveColloid
Owner:DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
A kind of peptoid and its preparation method and application
ActiveCN106866794BImprove bindingHigh sensitivityNervous disorderPeptide/protein ingredientsDiseasePhenyl group
Owner:THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
Poly-silicon resin as well as preparation method and application thereof
ActiveCN109810669AImprove adhesionGood water resistance and adhesionNon-macromolecular adhesive additivesPolymer scienceHydrolysate
The invention provides poly-silicon resin as well as a preparation method and application thereof, and relates to the technical field of building sealing. The poly-silicon resin is prepared from the following raw materials in parts by weight: 200 to 220 parts of poly-silicon resin intermediate products, 130 to 150 parts of dihydroxy polydimethyl silane, 190 to 200 parts of methyltrimethoxysilane,21 to 24 parts of methanoic acid and 60 to 65 parts of isobutylamine, wherein the poly-silicon resin intermediate products are prepared from the following raw materials in parts by weight: 210 to 230parts of methyl-triisopropoxy-silane, 140 to 160 parts of toluene and 100 to 110 parts of inorganic acid solution. The silicone sealant coating solution is prepared from the following raw materials inparts by weight: 15 to 25 parts of polysilane rubber, 7.5 to 15 parts of methyl trimethoxy silane hydrolysate, 5 to 10 parts of silane coupling agents and 0.05 to 0.2 part of tin catalysts. The silicone sealant coating solution is applicable to concrete joint seams, and has excellent adaptability. After the treatment by the bottom coating solution provided by the invention, the bonding performance of the silicone sealant on concrete substrates can be obviously improved; the bonding performance of the silicone sealant after the water soaking can also be obviously improved.
Owner:GUANGZHOU GLORYSTAR CHEM
ZSM-22/ZSM-23 composite molecular sieve and preparation method
Owner:PETROCHINA CO LTD +1
Synthesis method of imiquimod intermediate
The invention discloses a synthesis method of an imiquimod intermediate, the synthesis method comprises the following steps: step 1, under the condition of a catalyst, heating quinoline and NBS in a solvent for reaction to obtain a compound 2; step 2, in the solvent, mixing the compound 2 with isobutylamine, adding a catalyst, and carrying out a heating reaction to obtain a compound 3; step 3, heating the compound 3 and NBS in the solvent for reaction to obtain a compound 4; step 4, in the first stage, the compound 4 and formamide are subjected to a heating reaction under the action of the catalyst; and in the second stage, hydrochloric acid is used for treatment to obtain a compound 1. Compared with the prior art, the method has the advantages of low price of initial raw materials, simple reaction operation in each step, high yield, less three wastes and high production efficiency.
Owner:江苏法安德医药科技有限公司
Aqueous acidic copper electroplating bath and method for electrolytically depositing of a copper coating
Owner:ATOTECH DEUT GMBH
Zinc oxide nanoparticle stable solution, and zinc oxide-polymer nanocomposite stable solution, preparation method and applications thereof
PendingCN111171522ASuitable for expansionGood dispersionSolid-state devicesSemiconductor/solid-state device manufacturingSimple Organic CompoundsPropylamine
The invention discloses a zinc oxide nanoparticle stable solution, and a zinc oxide-polymer nano composite material stable solution, a preparation method and applications thereof, wherein the zinc oxide nanoparticle stable solution contains zinc oxide nanoparticles and a stabilizer, and the stabilizer is low-boiling-point amine. According to the invention, the low-boiling-point amine is added intothe solution as a stabilizer, so that the zinc oxide nano particles with good dispersion property and the nano composite material can be effectively kept in the solution for several days under environmental conditions, wherein the low-boiling-point amines such as propylamine, butylamine, isobutylamine and the like can be self-dissociated into small organic compounds at room temperature, and the organic compounds are easy to evaporate in air at room temperature; and when the nano composite material is deposited on a base material, the low-boiling-point amine can be self-dissociated to be completely removed, so that the stable nano composite material film with good performance is obtained.
Owner:香港城市大学深圳研究院
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