168 results about "Hexanol" patented technology

The invention relates to the technical field of reverse osmosis (RO) membranes, in particular to a ro membrane filter element for a water purifier. A ro membrane filter element for a water purifier is a polyethersulfone membrane with a hydrophilic modifier-polydopamine coating deposited on the surface, and the hydrophilic modifier is one or more of polyethylene glycol, hexanehexol and 3-sulfopropyl tetradecyl dimethyl betaine. The ro membrane filter element for the water purifier disclosed by the invention has extremely high anti-pollution performance.

A gasoline modifier, a preparation method therefor and a use thereof, and a clean and environmentally friendly gasoline containing same. By volume, the gasoline modifier comprises 10-30 parts of No. 3 or No. 5 white oil, 5-50 parts of a gasoline detergent synergist and 40-85 parts of isooctyl alcohol; the gasoline detergent synergist comprises a stock liquid and a diluent liquid; the stock liquid is a liquid substance formed by mixing 2-ethylhexyl phosphate and etidronic acid in a weight ratio of 1.8-3:1 and heating to perform an esterification reaction; and / or the stock liquid comprises 2-ethylhexanol, phosphite ester, 2-ethylhexyl acetate, polyisobutylene succinic anhydride and ethylhexyl phosphate; the diluent liquid is formed by mixing formaldehyde having a content greater than 99% with oligomeric water clusters in a weight ratio of 1:4-3:7; and the weight percentage of the stock solution in the gasoline detergent synergist is 0.8%-1.3% white oil. The gasoline modifier is a pure petroleum product. When added to gasoline, it can change the physical properties of the gasoline, and achieve the effects of increasing efficiency, saving fuel, removing carbon and reducing emissions.

The invention discloses a low-rank coal composite flotation reagent and a preparation method and application thereof, and belongs to the technical field of coal flotation of mineral processing. The agent specifically comprises a composite collecting agent and a composite foaming agent, and the composite collecting agent comprises kerosene, n-dodecane, oleic acid, dimer acid, sodium stearate, terpilenol, diethyl phthalate, alkylphenol ethoxylates, span-80, trioctyl phosphate and 2-ethylhexanol. The composite foaming agent is prepared from the following components: terpilenol, terpenic oil, sec-octyl alcohol and sodium alpha-olefin sulfonate. Compared with a traditional single flotation reagent combination, the composite flotation reagent has a remarkable effect in fine coal flotation, and particularly when coal with the particle size smaller than 0.5 mm is treated, the flotation efficiency, the clean coal yield and the combustible body recovery rate can be effectively improved. More importantly, the medicament is stable at normal temperature, the layering phenomenon is avoided, the long-term effectiveness is ensured, and the medicament has extremely high industrial application potential.

The invention relates to the technical field of fish meat source identification, in particular to a method for identifying different sources of fish meat by combining an electronic tongue with HS-SPME-GC / MS. The method comprises the following steps: obtaining a fish meat sample; performing taste detection on the fish meat sample by adopting an electronic tongue to obtain a taste detection result; after the fish meat sample is extracted, volatile odor substance detection is conducted through chromatography and mass spectrometry, volatile odor substances comprise one or more of dimethyl phthalate, nonanal, n-hexyl alcohol, naphthalene, octanol, 1-octylene-3-alcohol and alpha-platylene, and a volatile odor substance detection result is obtained; and identifying the fish meat source in combination with the taste detection result and the volatile odor substance detection result. According to the method, an electronic tongue technology and a headspace solid phase microextraction-gas chromatography-mass spectrometry technology are combined for use, and the taste and the smell are detected at the same time so as to distinguish fish meat from different sources, so that a more reliable quality evaluation system can be established, accurate traceability and grading are supported, and different user requirements are met.

The invention discloses application of bacillus albordowii in cultivation for improving the flavor of fragrant rice, and relates to the field of fragrant rice cultivation and planting. According to the application, it is found for the first time that bacillus albordowii has the effect of improving flavor substances of fragrant rice, and when fragrant rice seedlings grow to the three-leaf and one-core stage, the roots of the seedlings are soaked with bacillus albordowii liquid; after the seedlings are transplanted to a field, the bacillus albopastoris bacterial liquid is sprayed to the soil at the roots of the seedlings, 24 main aroma components in the fragrant rice can be increased by 5.56%-12036.00%, the content of 2-ethyl-1-hexanol with rose fragrance is increased by 120 times or above, the content of 2-butyl-1-octanol with flower fragrance is increased by 235.71%, the content of 6, 10-dimethyl-(E)-5, 6-dimethyl-2, 6, 6-tetramethyl-1, 3-pentanedione with fruit fragrance is increased by 235.71%, and the content of 6, 10-dimethyl-(E)-5, 6-tetramethyl-1, 3-pentanedione with fruit fragrance is increased by 235.71%. The content of 2, 9-undecylene-2-ketone is increased by 132.50%, the content of limonene, the content of hexanal, the content of 2-heptanone, the content of 2-tridecanone and the content of 2-pentadecanone are increased by 50% or above, and the content of 2-acetyl-1-pyrroline (2-AP) is increased by 30% or above; the application method is more convenient to operate, and the overall flavor of the rice is improved more remarkably.

The invention belongs to the technical field of titanium dioxide composite materials, and discloses a preparation method and application of modified rutile type nano titanium dioxide. According to the preparation method, water and n-hexyl alcohol are taken as a microemulsion system, titanium tetrachloride is taken as a titanium source, lauryl sodium sulfate is taken as a surfactant, and rutile type nano titanium dioxide with good dispersity and small particle size is obtained through hydrothermal reaction; then carrying out surface modification by using toluene-2, 4-diisocyanate, so as to obtain modified rutile type nano titanium dioxide; and carrying out melt blending with a copolymer of styrene and an acrylate dimethylsilane monomer by taking the modified polystyrene as a filler to obtain the polystyrene material. Isocyanate groups contained on the surface of the modified rutile type nano titanium dioxide can react with hydroxyl groups of the polystyrene copolymer, so that the mechanical property, the high temperature resistance and the ultraviolet aging resistance of the material are remarkably improved.

The invention discloses a lactobacillus brevis SMF L6 strain for improving the characteristic flavor of fermented fish and application thereof, and belongs to the technical field of aquatic product processing. According to the method disclosed by the invention, low-temperature fermentation is carried out by utilizing a sake lactobacillus wide cloth SMF L6 direct vat set fermentation inoculant to regulate and control the flavor; the method can effectively promote the production of flavor substances such as n-hexyl alcohol, eudesmol, 2-ethylhexyl alcohol, 4-platycladi alcohol, linalool, 4-terpene alcohol, alpha-terpilenol, piperonone, beta-myrcene, alpha-terpinene, D-limonene, beta-phellandrene, gamma-terpinene and the like in the fermented fish. The content of pungent smell and fishy smell substances such as acetic acid, p-xylene, o-xylene, trimethylamine, methyl mercaptan and carbon disulfide is reduced.

The present invention addresses the problem of improving the change in smell of stearyl glycyrrhetinate,. This composition is characterized by containing components (A)–(C). (A) Stearyl glycyrrhetinate, (B) niacinamide or tranexamic acid, and (C) at least one compound selected from the group that consists of anisyl alcohol, farnesol, eugenol, citronellol, α-pinene, 1-hexanol (hexen-1-ol), linalool, cedryl acetate, Iso E Super, Sandalore, Ambroxan, γ-terpinene, ambrettolide, β-ionone, borneol, isobutyl quinoline, citral, guaiacol, patchouli alcohol, cedrol, ethyl vanillin, maltol, linalyl acetate, α-terpineol, benzyl benzoate, damascenone, anisaldehyde, benzaldehyde, Magnolan, Mayol, phenylacetaldehyde dimethyl acetal, nerol, dimethyl benzyl carbinol, Bacdanol, methyl anthranilate, Muscenone, benzyl acetate, phenylethyl alcohol, phenylethyl acetate, and heliotropine.

The invention discloses a method for synthesizing dialkyl terephthalate through waste PET plastic alcoholysis based on a VTa-coated NC / C catalyst, the conversion rate of PET plastic is 100%, the yield of dimethyl terephthalate and ethylene glycol is as high as 99%, no obvious inactivation phenomenon exists after the catalyst is used for 10 times, and the method is suitable for industrial production. The catalytic system is also effective to n-butyl alcohol, 2-ethylhexanol, isononyl alcohol, isodecyl alcohol and ethylene glycol, a series of plastic additives and ethylene glycol can be obtained, and the product yield is 89% or above.

The invention discloses an anti-tumor pharmaceutical composition based on NBDHEX and application of the anti-tumor pharmaceutical composition in treatment of immunosuppressive malignant tumors. The pharmaceutical composition comprises NBDHEX (6-(7-nitro-2, 1, 3-benzoxadiazol-4-ylthio) hexanol) and a PD-1 (programmed death-1) inhibitor, and is characterized in that the NBDHEX (6-(7-nitro-2, 1, 3-benzoxadiazol-4-ylthio) hexanol) and the PD-1 inhibitor are used as raw materials. The NBDHEX can induce tumor cells to generate immunogenic death and promote tumor antigen release, DAMPs signal activation and dendritic cell maturation, so that an immunosuppressive tumor microenvironment is remodeled, and CD8 + T cell infiltration and effector functions are enhanced. The pharmaceutical composition can significantly improve the anti-tumor immune response intensity and the treatment response rate. Animal experiments and cell experiments verify the synergistic anti-tumor effect of the composition in a lymphoma model. The immunosuppressive malignant tumors are suitable for treatment of various immunosuppressive malignant tumors including lymphoma, and are especially suitable for patients with poor single-drug reaction or drug resistance to immune checkpoint inhibitors, and a new way is provided for clinical treatment of tumors.

The invention discloses a preparation method of an (R) 2-(4-chloro-2-methylphenoxy) isooctyl propionate root inhibitor. The method comprises the following steps: carrying out condensation reaction on L-2-chloropropionic acid and o-cresol under the promotion of alkali to obtain (R) 2-methylphenoxypropionic acid; carrying out esterification reaction on the (R) 2-methyl phenoxy propionic acid and isooctyl alcohol (2-ethyl hexanol) under the action of a catalyst to obtain (R) 2-methyl phenoxy isooctyl propionate; the (R) 2-methyl phenoxy isooctyl propionate is chlorinated by a chlorination reagent to obtain (R) 2-(4-chloro-2-methyl phenoxy) isooctyl propionate; the (R) 2-(4-chloro-2-methylphenoxy) isooctyl propionate obtained by the method disclosed by the invention is high in yield, good in optical activity and excellent in quality; the method has the advantages of novel synthesis route, easily available raw materials, low cost, simple and feasible process operation, short time consumption, less waste, small pollution and suitability for industrial production, and can fill the domestic blank and relieve the current situation of dependence on import.

The present application relates to the field of magnesium-aluminum composite oxide preparation, and discloses a magnesium-aluminum composite oxide and a preparation method thereof.The method comprises the following steps: (1) under anhydrous conditions, performing a first reaction on aluminum and a first aliphatic alcohol to obtain an alkoxide aluminum-containing material; (2) under the action of a catalyst, performing a second reaction on the alkoxide aluminum-containing material obtained in step (1), magnesium and a second aliphatic alcohol under anhydrous conditions; (3) performing hydrolysis on the reaction product of step (2) to obtain a magnesium-aluminum bimetallic alkoxide, and then performing optional drying and calcination to obtain a magnesium-aluminum composite oxide; wherein the first aliphatic alcohol and the second aliphatic alcohol each independently comprise n-pentanol and optionally n-hexanol. The preparation method of the magnesium-aluminum composite oxide provided by the present application can obtain a high-purity magnesium-aluminum composite oxide without subsequent purification treatment, and has the advantages of short initiation time and short reaction time.

This invention provides a phosphorus-free, multifunctional, environmentally friendly scouring agent, its preparation method, and its application, belonging to the field of textile printing and dyeing technology. The surfactants used in this invention (including 2-ethylhexanol alkyl glycoside, 2-propylheptanol alkyl glycoside, 2-propylheptanol xyloside, and isomeric tridecyl alcohol ether carboxylic acid) are all nonionic surfactants. The resulting phosphorus-free, multifunctional, environmentally friendly scouring agent is easily soluble in water, acid-resistant, resistant to high-concentration strong alkalis, hard water-resistant, low-foaming, and has strong penetrating power. It is widely applicable to cotton and its blended textile processes, achieving excellent whiteness and wicking effect in conventional annealing / scouring / bleaching processes. It contains no alkylphenol polyoxyethylene ethers or organophosphates, causing no environmental pollution and simplifying and making textile pretreatment processes more environmentally friendly.

This invention belongs to the field of biosensing and detection technology, specifically disclosing a Tau protein electrochemiluminescent aptamer sensor, its preparation method, and its application. The sensor uses a CsPbBr₃@PVP / Au composite material as the electrochemiluminescent substrate. A Tau protein-specific aptamer is immobilized on the substrate surface via Au-S bonds, and non-specific adsorption sites are blocked with 6-mercapto-1-hexanol. The CsPbBr₃@PVP / Au composite material is prepared by encapsulating CsPbBr₃ with PVP and then combining it with Au NPs. This invention utilizes the coordination passivation effect of PVP and CsPbBr₃ to significantly improve the aqueous stability and electrochemiluminescence efficiency of perovskite nanocrystals. Combined with the anchoring effect of AuNPs and the specific recognition effect of aptamers, it achieves ultrasensitive detection of Tau protein with a detection limit as low as 0.80 fg / mL. Furthermore, it exhibits excellent selectivity, stability, and detection accuracy in complex biological samples such as cerebrospinal fluid, providing a novel and efficient detection platform for the early diagnosis of Alzheimer's disease and showing promising clinical application prospects.

The present disclosure is directed to linear polyphosphazene compounds, including compounds represented by the following chemical formula 1.wherein n can an integer from 1 to 300; MPEG can represent methoxy poly(ethylene glycol) with a molecular weight of 350 to 1000; S can be a space group selected from the group consisting of lysine, arginine, glutamine, asparagine, tyrosine, lysine containing oligopeptide, arginine containing oligopeptide, glutamine containing oligopeptide, asparagine containing oligopeptide, tyrosine containing oligopeptide, amino-ethanol, amino-propanol, amino-butanol, amino-pentanol, and amino-hexanol; 1 may equal to 0-0.9 and m may equal to 0.1-1.

The present invention relates to a process for the preparation of para aminobenzoic acid-2-ethylhexyl ester comprising reacting para nitrobenzoic acid-2-ethylhexyl ester with hydrogen in the presence of a catalyst wherein the reaction is carried out in water or in a mixture of water and 2-ethylhexanol. In addition, the present invention relates to para aminobenzoic acid-2-ethylhexyl ester obtained by the method and having high purity.

The invention discloses a novel wetting agent for silicon wafer cutting and a preparation method and application thereof. The main component of the wetting agent is 3, 5, 5-trimethyl hexanol succinic acid ester sodium sulfonate, and the specific preparation method comprises the following steps: firstly, 3, 5, 5-trimethyl hexanol reacts with maleic anhydride at a certain temperature, a catalyst p-toluene sulfonic acid is added, oxygen is removed through nitrogen replacement, then the temperature is increased and kept for a period of time, and finally byproducts are removed under the reduced pressure condition. And secondly, mixing the obtained product with ethanol and sodium hydroxide, heating to a specific temperature, dropwise adding a sodium pyrosulfite aqueous solution with a specific concentration, keeping the temperature for a certain time, and finally cooling and adding more ethanol to obtain a final product. The wetting agent shows excellent wetting performance in the silicon wafer cutting process, cutting line marks can be effectively reduced, the surface roughness is reduced, and the cutting efficiency and the silicon wafer quality are improved. In addition, the wetting agent also has wide application prospects in the fields of wafer cleaning, photoetching technology, photovoltaic industry, electronic packaging, MEMS device manufacturing and the like, and has remarkable market potential and commercial value.

The invention discloses a Priesteria gigantea GD0038 and an application thereof in improving the flavor of weed crab sauce. The strain is deposited in the China Center for Type Culture Collection with a deposit number of CCTCC NO: M 20242548 and a deposit date of November 13, 2024. The strain is applied to the preparation of weed crab sauce, can significantly improve the flavor of the weed crab sauce, increase the content of volatile substances in the fermented weed crab sauce, and increase the content of characteristic flavor substances such as 1-penten-3-ol, 1-nonanol, isovaleraldehyde, n-hexanol, n-octanol, 3-n-decanol, 2-heptanone, and other alcohols, pyrazines, and ketones, while reducing the content of unpleasant flavor substances such as butylamine, trimethylamine, and n-hexanal. The invention has very good application prospects.

To provide a resin composition which has improved impact resistance at low temperature.SOLUTION: A resin composition contains a 3-hydroxyalkanoic acid-based polymer represented by formula (I), and a polyester-based polymer, wherein the polyester-based polymer is composed of a monomer unit composed of only a polyhydric alcohol component and a dicarboxylic acid component, at least a part of a terminal of the polyester-based polymer is sealed with a residue of monoalcohol and / or a residue of a monocarboxylic acid, polyhydric alcohol of the polyhydric alcohol component is MPD(3-methyl-1,5-pendandiol) and / or TMP(trimethylol propane), a dicarboxylic acid of the dicarboxylic acid component is an adipic acid or a sebacic acid, the monoalcohol is 2-ethylhexanol, and the monocarboxylic acid is an acetic acid. In the formula (I), a ratio (k / p) is 70 / 30 to 99 / 1.SELECTED DRAWING: None

The invention provides a DHHB purification method which comprises the following steps: transferring a DHHB crude product into a washing kettle, adding water into an n-hexanol solution containing DHHB, stirring, standing for phase splitting, discarding a lower phase containing water-based colored impurities, and retaining an organic phase containing DHHB; transferring the DHHB organic phase after water washing to an n-hexanol evaporator, and evaporating out n-hexanol; 4-time crystallization: adding ethanol to dissolve the DHHB crude product after the n-hexanol is removed or the solid product obtained by the previous crystallization, cooling, stirring and crystallizing, filtering, washing the solid with cold ethanol, and reusing the filtrate obtained by the next crystallization in the previous crystallization step; transferring a solid obtained after fourth crystallization and filtration to a vacuum dryer, and drying to obtain a high-purity DHHB product; and feeding the filtrate subjected to primary crystallization and filtration into an ethanol evaporator, and distilling to recover ethanol. The invention provides a DHHB green purification process which is efficient, energy-saving, low in cost and high in yield of 95% or above.

The invention provides a nanofiber membrane as well as a preparation method and application thereof. The preparation method comprises the following steps: S1, preparing a first composition containing quantum dots and a polar solvent, wherein the surfaces of the quantum dots have 6-sulfydryl-1-hexanol ligands; s2, preparing a clarified second composition containing a polyvinylidene fluoride-hexafluoropropylene copolymer and a polar solvent; s3, uniformly mixing the first composition and the second composition to obtain a spinning solution; s4, preparing a nanofiber membrane by utilizing an electrostatic spinning process and the spinning solution; wherein the S1 is carried out before or after or synchronously with the S2. The membrane has the characteristics of high fluorescence performance of the quantum dots and stability of the polyvinylidene fluoride-hexafluoropropylene copolymer, and the fluorescence intensity and the storage stability of the ligand-modified nanofiber membrane are greatly improved.

The invention belongs to the technical field of medicine synthesis processes, and particularly relates to a preparation method of high-yield and high-purity buspirone hydrochloride. According to the method, 8-(2-pyrimidinyl)-8-aza-5-5-azonium spiro [4.5] decane hydrobromide (pyrimidino piperazine quaternary ammonium salt for short) and 3, 3-tetramethylene glutarimide are taken as raw materials, a mixed solvent of methylbenzene and n-amyl alcohol and / or n-hexanol is taken as a solvent, buspirone can be generated in the presence of sodium carbonate without adding a phase transfer catalyst, and buspirone can be obtained through acid adjustment and extraction. After toluene reverse phase impurity removal, a water phase is adjusted to be alkaline, an ethanol solution of hydrogen chloride is added after toluene extraction, and buspirone hydrochloride solid is directly separated out. The preparation process has a very good cleaning effect on impurities, and the obtained buspirone hydrochloride is high in purity, high in process yield, good in atom economy and low in output of three wastes.

The invention belongs to the technical field of environmental engineering and chemical separation, and particularly relates to a deep-eutectic solvent composition for efficiently extracting phenolic compounds and a preparation method of the deep-eutectic solvent composition. The deep-eutectic solvent composition for efficiently extracting the phenolic compounds, provided by the invention, consists of a hydrogen bond acceptor and a hydrogen bond donor in a molar ratio of (1-2): (1-9), the hydrogen bond donor comprises n-caprylic acid or n-hexyl alcohol; the hydrogen bond receptor comprises 1-ethyl-3-methylimidazole chloride or tetrabutylammonium bromide. The eutectic solvent composition has the advantages of high partition coefficient, low viscosity, high selectivity, rapid phase separation, environmental friendliness and the like, can efficiently extract phenol, resorcinol, o-cresol, m-cresol and p-cresol, and has single-stage extraction efficiency gt; the regeneration rate is high, and the method is suitable for high-concentration phenolic wastewater, polyhydroxy phenolic wastewater, continuous process and low-toxicity emission requirement scenes.

The present invention provides a synthesis process of hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate. In the present invention, a solid acid is used as a catalyst, 3-N,N-diethylaminophenol and phthalic anhydride are put into an organic solvent and refluxed; the organic solvent is recovered; then n-hexanol is added to the reaction solution to react to form hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate; then the catalyst is recovered by hot filtration, the organic solvent in the filtrate is recovered under reduced pressure, cooled and crystallized, and filtered to obtain a primary refined product; the mother liquor of the primary refinement is recovered and treated to recover 2-hydroxy-4-diethylamino-2'-carboxybenzophenone and n-hexanol respectively; the n-hexanol in the primary refined product is recovered under reduced pressure, and then secondary refinement is carried out using ethanol as a solvent, decolorized, filtered, cooled and crystallized, centrifuged, and dried to obtain hexyl 2-(4-N,N-diethylamino-2-hydroxybenzoyl)benzoate. By adopting the synthesis process of the present invention, the yield is effectively improved, and the production cost is reduced, which is suitable for large-scale production.

The colorimetric LAMP system comprises a colorimetric LAMP reaction mixture and an extraction-free lysis buffer solution. The colorimetric LAMP reaction mixture can be wholly freeze-dried and comprises a primer set, strand displacement polymerase, deoxynucleoside triphosphate, pH indicating dye and freeze-drying protective sugars, including trehalose, raffinose, glucan and mannitol. The extraction-free cracking buffer solution comprises potassium chloride, ammonium sulfate, a cleaning agent and 2-ethylhexyl-1-alcohol; 2-methyl ethylene oxide; the invention relates to a high-efficiency alcohol-based cleaning agent, which is prepared from the following raw materials: ethylene oxide, secondary alcohol ethoxylate, 2-[4-(2, 4, 4-trimethylpent-2-yl) phenoxy] ethanol, 2-[4-(2, 4, 4-trimethylpent-2-yl) phenoxy] ethyl-1-alcohol, and {2-[3, 4-bis (2-hydroxy ethyoxyl) oxalane-2-yl]-2-(2-hydroxy ethyoxyl) ethyoxyl} ethyl laurate. The freeze-dried colorimetric LAMP reaction mixture can be subjected to nucleic acid amplification and detection after being rehydrated by an extraction cracking buffer solution.

The invention relates to a photoresist for the production of nanostructures, a method using this photoresist for multi-photon 3D lithography for the production of nanostructures with a high refractive index, in particular for the production of a semiconductor structure on a substrate. The object of the invention, to provide an optimized photoresist for the production of nanostructures, and a method using this photoresist for the direct 3D laser structuring of nanostructures on a substrate, wherein the optimized photoresist exhibits good adhesion, increased lifetime, and increased laser light sensitivity, is achieved by providing the photoresist in the form of butyldithiocarbamic acid or carbon disulfide and n-butylamine, as well as at least one metal oxide or metal hydroxide and ethanol, with the addition of the components antimony(III) oxide, amorphous or crystalline antimony(III) trisulfide, n-nonane, isooctane, hexanol, polyethylene glycol 200, 300, or 400, polyethylene glycol, octanol,n-Propylamine, chloroform, and water are provided, and all components are heated with stirring at a speed of 50 to 1500 rpm and at temperatures in the range of 25-100°C for a time in the range of 60 to 720 min, and then cooled to room temperature, and that this photoresist is used as a negative resist in a multi-3D lithography process for the fabrication of nanostructures by etching metal chalcogenide nanostructures with high refractive index and high resolution.

The present invention relates to N-methyldihexanolamine and its preparation method and application, belonging to the technical field of preparation of N-methyldihexanolamine. The present invention mainly uses ε-caprolactone and 6-amino-1-hexanol as raw materials, adds lithium aluminum tetrahydride after reaction to generate dihexanolamine, and then reacts with formic acid and formaldehyde and neutralizes with NaOH to obtain. The preparation method of the present invention is simple and easy, the raw materials are easy to obtain, the amount of wastewater generated during the synthesis process of N-methyldihexanolamine can be greatly reduced, and the yield of N-methyldihexanolamine can be greatly improved.

The invention belongs to the technical field of food biology, and relates to blackened jujube juice, in particular to a method for preparing probiotic blackened jujube juice based on solid-liquid step-by-step green precise fermentation. According to the preparation method disclosed by the invention, the probiotic compound combination capable of effectively increasing the viable count is screened and excavated, and the viable count of the probiotics in the product is increased on the basis of retaining rich nutritional ingredients of the blackened jujubes by fermenting the blackened jujube juice, so that the functionality of the product is improved. Through precise fermentation of probiotics, the content of sugar in the blackened jujube juice is further reduced, the content of nutritional ingredients such as organic acid is increased, sugar in the jujube juice is promoted to be efficiently converted into lactic acid (the sugar degradation rate is larger than or equal to 25%) through symbiotic metabolism regulation and control of the two bacteria, meanwhile, key aroma substances such as ethyl acetate and n-hexyl alcohol are generated, and the product is endowed with fresh fruity flavor and low-sugar characteristics; therefore, the flavor and taste of the beverage are improved, and the blackened jujube juice has higher biological functionality; and through the hypoglycemic effect of the probiotics, a healthier beverage choice is provided for people with low sugar requirements, and the huge application potential of a food biotechnology in the field of nutrition and health is shown.

The present application provides a method for determining extractable organic fluorine in textiles by online combustion-ion chromatography system, and relates to the technical field of textile detection. The method specifically comprises the following steps: weighing the textile, immersing the textile in an organic solvent, then performing ultrasonic extraction to obtain an extraction solution; cooling and concentrating the extraction solution, using the same organic solvent to make up the volume to obtain a sample solution; adding n-hexanol to the sample solution for solvent replacement to obtain a test solution; burning the test solution under rich-oxygen high-temperature hydrolysis conditions, using pure water to absorb the generated gas to obtain an absorption solution; using an ion chromatograph to determine the content of fluorine ions in a fluorine ion standard working solution and the absorption solution respectively, drawing a standard working curve, and quantitatively calculating the content of extractable organic fluorine in the textile by external standard method. The method is verified by various textiles, and has good robustness; the loss of volatile substances and background pollution are effectively reduced, and the stability and accuracy of detection are improved.

The invention discloses a sintering slurry, a diffusion layer and a preparation method thereof, and relates to the technical field of capacitor electrode slurry, the sintering slurry comprises the following components in parts by weight: 60-68 parts of silver powder, 23-30 parts of an organic carrier and 6-10 parts of an inorganic additive; the organic carrier is prepared from polymethyl methacrylate, monomer resin, diethylene glycol monobutyl ether, medium-chain unsaturated fatty acid, 2-ethyl-1-hexanol and polyoxyethylene sorbitan monooleate; the inorganic additive comprises nano barium titanate and cerium oxide. According to the invention, the sintering slurry is directionally diffused under the action of gravity in the sintering process to form an internal net-shaped shielding structure, so that the purposes of reducing the manufacturing precision requirement of the ultra-wideband capacitor, improving the pressure resistance, reducing the metal migration risk and improving the design freedom degree are achieved.