138 results about "Cyclohexane" patented technology

The invention provides a scintillator film for a real-time X-ray dosimeter as well as a preparation method and application of the scintillator film. The preparation method comprises the following steps: weighing Eu (NO3) 3.6 H2O, Tb (NO3) 36H2O, Lu (NO3) 36H2O, NaF and NH4F to prepare powder B; preparing a rare earth fluoride material C from the powder B; weighing a polydimethylsiloxane prepolymer and a curing agent, adding the polydimethylsiloxane prepolymer and the curing agent into a cyclohexane solution, and performing ultrasonic dispersion to obtain a mixture D; adding the rare earth fluoride material C and PMMA particles into an ethanol solution, and uniformly dispersing to obtain a mixture E; dropwise adding the mixture E into the stirred mixture D, and performing vacuum mixing to obtain a mixture F; and transferring the mixture F to the surface of a ceramic plate which is respectively cleaned by water, ethanol and acetone and dried, coating to form a thin film, heating and annealing, and cooling to obtain the flexible scintillator thin film NaLuF4: Tb < 3 + > / Eu < 3 + > coated PDMS which is used for a real-time X-ray dosimeter.

The compound cis)-N—((S)-1-(6-(4-fluoro-1H-pyrazol-1-yl)pyridin-3-yl)ethyl)-1-methoxy-4-(4 methyl-6-(5-methyl-1H-pyrazol-3-ylamino)pyrimidin-2-yl)cyclohexanecarboxamide can be prepared as a free base in various crystalline solid forms, and in various salt forms each having one or more solid forms.

This invention relates to the field of medicinal chemistry, and in particular to a method for preparing gaticycline esters. The method for preparing gaticycline esters provided by this invention includes the following steps: reacting compound I, an acid-binding agent, and a solvent to obtain the gaticycline ester; the structural formula of compound I is: [structural formula missing]; the particle size of the acid-binding agent is ≤48 μm. The method for preparing gaticycline esters of this invention avoids the degradation and demethylation reaction of the generated gaticycline ester, thereby avoiding the generation of impurity compounds, and can obtain gaticycline esters with high yield and high purity.

This invention discloses a magnetically supported thioether-chelated nitrogen heterocyclic carbene palladium complex MNPs-NHC-Pd, its preparation method, and its applications. Using an amino alcohol as a starting material, an imidazole derivative containing a hydroxyl group on the N-substituent is obtained through a condensation and ring-closing reaction. This derivative is then subjected to substitution reactions with thionyl chloride and cyclohexanethiol sequentially to obtain an imidazole derivative containing a thioether on the N-substituent. This derivative is then reacted with 1,3-dibromopropane to obtain an N-bromopropyl-N'-cyclohexane thioether-substituted imidazole bromium salt. This salt is then reacted with Pd(OAc)₂ or PdCl₂ via a direct metallization reaction to obtain the N-bromopropyl-substituted thioether-chelated nitrogen heterocyclic carbene palladium complex NHC-Pd. The NHC-Pd complex is then reacted with amino-functionalized magnetic nanoparticles (MNPs-NH₂) to prepare the magnetically supported thioether-chelated nitrogen heterocyclic carbene palladium complex MNPs-NHC-Pd. It not only possesses the activity of homogeneous nitrogen heterocyclic carbene palladium catalysts, but also has a simple synthesis method, high yield, and is easy to separate and reuse in catalytic C-C bonding reactions, showing good application prospects in the field of catalysis.

The application discloses a binary amine containing cyclohexane and norbornane structure, a preparation method and application in preparing transparent nylon. The application synthesizes a binary amine monomer containing cyclohexane and norbornane structure, and copolymerizes the binary amine monomer with aliphatic binary acid or norbornane-containing binary acid, aliphatic binary amine or norbornane-containing binary amine, to synthesize a transparent nylon containing norbornane structure. The cyclic structure with norbornane on the molecular chain can cause the regularity of the molecular chain to be destroyed, the crystallization ability to be reduced, the transparency of the nylon to be effectively improved, the processability of the nylon to be effectively improved due to the fact that a large number of cyclic structures are contained in the polymer chain and the polymer chain is a straight chain structure, the nylon has excellent thermal performance and mechanical performance, and the nylon has good solvent resistance and low dielectric constant.

The invention discloses a bio-based low-carbon environment-friendly functional furan polyester fiber and a preparation method thereof. The invention belongs to the technical field of macromolecules, and particularly relates to a polyfurandicarboxylic acid cyclohexanedimethanol-ethylene glycol copolyester fiber. The invention also provides a preparation method of the bio-based furan copolyester, and the bio-based furan copolyester obtained according to the preparation method provided by the invention has higher crystallinity and crystallization rate, excellent fiber mechanical properties and remarkable antibacterial property, and is a sustainable environment-friendly fiber with good comprehensive properties. The bio-based furan copolyester fiber and the like can be widely applied to the related fields of conventional clothes, home textiles and the like.

The present invention relates: to a tablet formulation comprising crystalline Hydrate 1 Modification A form of the compound 3-(3-chloro-2-methoxy-anilino)-2-[3-[[(2S)-l,4-dioxan-2-yl]methoxy]-4-pyridyl]-1, 5,6,7- tetrahydropyrrolo[3,2-c]pyridine-4-one, of formula (A): wherein the content of water is greater than 0% (w / w), particularly greater than 0% and less than or equal to 4%, of the total weight of said compound of formula (A); to methods of preparing said tablet formulation, and to uses of said tablet formulation in the prophylaxis and / or treatment of diseases.

Provided herein are p-carboline compounds of formula (I) [0537], or forms thereof, and uses thereof to inhibit dihydroorotate dehydrogenase (DHODH), wherein R1, R2, R3, R4 and R5 are as defined herein. (I)

This invention belongs to the field of fertilizer additive technology, specifically relating to a Cu-containing additive. Ⅱ The coordination polymers, preparation methods, and applications are described. The preparation methods include: synthesizing N,N'-bis(3-pyridinecarboxamide)-1,2-ethane using nicotinic acid and 1,2-ethylenediamine as raw materials; and synthesizing Cu-containing polymers from N,N'-bis(3-pyridinecarboxamide)-1,2-ethane, CuCl2·2H2O, and 1,4-cyclohexane using a hydrothermal method. Ⅱ The coordination polymer [Cu(1,4-chdc)(3-dpye)]·3H2O is a blue crystal. The product prepared in this invention is used as a fertilizer additive in urea to reduce the conversion of urea N to ammonium nitrogen and ammonium nitrogen to nitrate nitrogen during urea application, thereby reducing the volatilization of NH3 into the air after urea application and the subsequent volatilization of N2O.

This invention is in the area of cell cycle inhibiting compounds for the treatment of disorders involving abnormal cellular proliferation, and include selective CDK2 inhibitors for medical therapy and their pharmaceutically acceptable salts and compositions. The inhibitors are pyrimidine-based N-heterocyclic compounds of formula:

The present application relates to the technical field of organic chemical industry, and particularly relates to a preparation method of a low-temperature and high-efficiency adsorbent for removing olefins from hexane. The method comprises the following steps: 1. hydrogen type molecular sieve preparation: sodium type molecular sieve is exchanged by exchange liquid, washed by desalted water, repeated three times of exchange-washing, dried and calcined to obtain hydrogen type molecular sieve; 2. forming: hydrogen type molecular sieve, pseudo-boehmite and nitric acid aqueous solution are mixed according to a proportion, and a strip-shaped molecular sieve is prepared by kneading, rolling, extruding, drying and calcining; 3. modification: the strip-shaped molecular sieve is exchanged by exchange liquid, washed by desalted water, dried and calcined to prepare a molecular sieve adsorbent. The present application realizes removal of C6-C9 olefins in the recycled hexane for producing ethylene-propylene rubber, reduces the bromine value of the hexane, realizes continuous hexane refining, and improves the quality of the ethylene-propylene rubber product.

The invention relates to the technical field of tumor treatment medicines, in particular to application of cyclohexanediamine modified nano platinum in preparation of a tumor visual treatment medicine. The preparation method of the cyclohexanediamine modified nano platinum comprises the following steps: reducing chloroplatinic acid to prepare platinum nanoparticles; and adding cyclohexanediamine, and carrying out repeated ultrasonic treatment. After intravenous injection, the cyclohexanediamine modified nano platinum drug has a tumor cell toxic effect similar to that of a traditional small-molecule platinum drug, and has a further enhanced tumor cell killing effect under near-infrared light irradiation. Meanwhile, the cyclohexanediamine modified nano platinum drug provided by the invention can also realize visual treatment of tumors under the assistance of near-infrared photoacoustic imaging equipment, and has great clinical popularization and application values.

A method for recovering monoether from ethylene glycol monoallyl ether preparation process wastewater, comprising the following steps: 1) taking ethylene glycol monoallyl ether preparation process wastewater, adding an extractant A, the extractant A being cyclohexane and / or n-hexane; 2) taking the water layer, adding a soluble salt to obtain a saturated salt solution; 3) adding an extractant B to the saturated salt solution, the extractant B being chloroform; 4) taking the organic layer, removing the extractant B to obtain the monoether. The present application has the advantages of simple steps, low cost, and the purity of the recovered monoether being greater than or equal to 99%, and the comprehensive recovery yield of the monoether reaching more than 99%.

The invention discloses a preparation method of an environment-friendly degradable PLAPETG composite material and application of the PLAPETG composite material in 3D printing consumables in the field of polymer composite materials, and the preparation method comprises the following steps: firstly, respectively carrying out vacuum drying on polylactic acid, polyethylene terephthalate-1, 4-cyclohexanedimethanol ester and a porous core-shell structure reinforcing agent; mixing the mixture with dibutyl itaconate, an antioxidant and a lubricant, and activating by plasma treatment; then putting the activated material into a double-screw extruder for melt blending, and injecting pressurized carbon dioxide fluid into the middle part; and finally, carrying out cooling pelletizing, low-temperature crushing and compression molding on extruded material strips to obtain the composite material. The composite material prepared by the invention has good mechanical properties, printing properties and controllable degradation characteristics, and is suitable for 3D printing consumables.

A multilayer optical film includes a plurality of alternating polymeric first and second layers numbering 10 to 120 in total. Each of the first and second layers having an average thickness of less than about 500 nm. The first layers include polyethylene naphthalate, and the second layers include a copolyester comprising at least one of cyclohexane dicarboxylic acid groups, adipic acid groups, or tetramethyl cyclobutanediol groups, such that for substantially normally incident light and for at least one polarization state, the multilayer optical film has an average optical reflectance of at least about 70% in a wavelength range at least about 200 nm wide.

The present application provides a BOG helium extraction method and system, and a MOF slurry absorbent and a preparation method thereof. The absorbent comprises 20-40wt% of a metal organic framework material and 60-80wt% of an organic solvent; the metal organic framework material comprises at least one of HKUST-1, CALF-20, ZIF-67 and ZIF-8; and the organic solvent comprises at least one of dimethyl phthalate, 1,3-dimethyl-2-imidazolinone, N-methyl pyrrolidone, sulfolane and methylcyclohexane. The BOG helium extraction method comprises: pretreating BOG raw gas to obtain He and N2 mixed gas; and under specific temperature and pressure conditions, contacting the He and N2 mixed gas with a volume ratio of 15-30:1 with the MOF slurry absorbent to obtain He. The technical scheme of the present application realizes efficient BOG absorption-adsorption separation and helium extraction under mild temperature and pressure conditions.

A low-boiling-point biphenyl mixture and multi-section heating synergistic uniform heat supply biphenyl boiler system comprises a multi-section heating device and a supply device, the biphenyl mixture supply device is connected with the multi-section heating device through a conveying pipeline, the multi-section heating device comprises a preheating section, a heating section and a heat preservation section, and the preheating section is connected with the heating section. Each section is provided with an independent heating element and an independent temperature sensor, and the heating element and the temperature sensor of each section are respectively connected with a controller; the biphenyl mixture comprises cyclohexylbenzene and dicyclohexane. Through the cooperation of the multi-section heating device and the low-temperature biphenyl mixture supply device, the limitation of traditional single-section heating is broken through, the temperature rising process of biphenyl in different stages can be accurately controlled, the heating power of each section is dynamically adjusted, long-distance transmission heat loss is effectively compensated, and the heating efficiency is improved. The problem of non-uniform temperature caused by large size of a biphenyl boiler is solved fundamentally, a stable and uniform heat source is provided for processes such as spinning, and product quality defects caused by temperature fluctuation are avoided.

This invention discloses a method for the catalytic hydrolysis of 3,3'-oxybis(cyclohexane-2-en-1-one) using carbon materials. Under the action of a bio-carbon-supported potassium-magnesium oxide catalyst rich in strongly basic sites, 3,3'-oxybis(cyclohexane-2-en-1-one) undergoes a hydrolysis reaction to produce 1,3-cyclohexanedione. The raw material 3,3'-oxybis(cyclohexane-2-en-1-one) is a byproduct of the resorcinol process for preparing 1,3-cyclohexanedione, and is inexpensive and readily available. The catalytic hydrolysis of 3,3'-oxybis(cyclohexane-2-en-1-one) to produce 1,3-cyclohexanedione achieves value-added processing of byproducts from the CHD industry, reduces solid waste generation, lowers the production cost of 1,3-cyclohexanedione, and has significant socio-economic benefits.

The application provides a device and method for continuously polymerizing rubber glue solution to produce engineering plastics, and the device comprises: a glue solution direct conveying system, which is provided with a polymerization kettle; a premixing unit, which comprises a dynamic mixer and a premixing kettle; and a solvent recovery system, which comprises a devolatilization tower and an azeotropic rectification tower; wherein the polymerization kettle is directly connected with the premixing unit through an insulation pipeline. Through the technical means of directly using the glue solution for ABS or HIPS polymerization production and refining and recovering cyclohexane solvent, the problems of high energy consumption, low efficiency, complex process and environmental pollution in the traditional process can be overcome.

The invention provides a skin whitening, maintaining and freckle removing essence formula based on plant extracts, and relates to the technical field of skin care, and the skin whitening, maintaining and freckle removing essence formula is characterized by comprising the following raw materials by weight: 3-8 parts of a peony root extract, 1.5-4 parts of oxyresveratrol, 0.5-2 parts of a coleus forskohlii root extract, and 1-3 parts of a Chinese wolfberry fruit extract. The composition is prepared from the following components in parts by weight: 2 to 5 parts of nicotinamide, 1 to 3 parts of acetylchitosamine, 2 to 6 parts of bis-diethoxy diglycol cyclohexane 1, 4-dicarboxylate, 4 to 8 parts of glycerol, 0.5 to 2 parts of panthenol, 0.1 to 0.3 part of sodium hyaluronate, 1.5 to 3 parts of polyglycerol-10 laurate, 0.1 to 0.3 part of xanthan gum, 0.8 to 1.5 parts of 1, 2-hexanediol, 0.3 to 0.7 part of caprylyl glycol and 0.1 to 0.5 part of citric acid. The whitening mask has the advantages that the whitening mask can fully act on generation and transfer of melanin, and the protection effect on the skin is improved while full whitening is achieved.

A cosmetic composition for enhancing skin absorption of active ingredients and formulation stability is disclosed. The cosmetic composition contains three or more ingredients selected from the group consisting of bis-ethoxydiglycolcyclohexane 1,4-dicarboxylate, lysolecithin, citron seed oil, and glycereth-25 PCA isostearate. The cosmetic composition has effects of enhancing skin absorption of active ingredients and enhancing formulation stability.

The application discloses a low-temperature curing thin coating powder paint and a preparation method thereof, and belongs to the field of paint preparation. The powder paint comprises preparation raw materials of resin, accelerant, curing agent, dispersant, benzoin, barium sulfate, leveling agent, gloss enhancer and pigment. The preparation raw materials of the resin comprise neopentyl glycol, ethylene glycol, 1,4-cyclohexane dimethanol, terephthalic acid, adipic acid, isophthalic acid, catalyst and antioxidant. The application effectively improves the branching degree and end carboxyl activity of the resin by optimizing the preparation raw materials and the preparation raw material ratio of the resin, reduces the curing temperature of the powder paint while ensuring the reaction activity of the resin, and also obtains excellent weather resistance and mechanical properties. The catalyst and antioxidant are added in the resin preparation stage, which helps to improve the storage stability, solves the problem of uneven dispersion of the powder paint as a whole, and helps to improve the gloss of the coating and the performance of the coating.

The application relates to a polypropylene material with high impact resistance and low melting point, a preparation method and application thereof. The polypropylene material with high impact resistance and low melting point comprises the following components in percentage by weight: 99.70-99.99% of polypropylene resin; 0.005-0.15% of nucleating agent A; and 0.005-0.16% of nucleating agent B. The nucleating agent A is a cyclohexane dicarboxylic acid metal salt; and the nucleating agent B is an alkali carbonate. The specific nucleating agent A and the nucleating agent B are compounded, the influence of the melt index fluctuation is overcome, the toughness difference between batch products is reduced, the product performance is stabilized, the polypropylene pipe material with high impact resistance, low melting point and stable quality is provided, the production cost is low, the preparation method is simple, and the large-scale application is facilitated.

The present disclosure relates to recyclable extrusion blow molded articles made from blends of recycled PET and copolyester compositions which comprise residues of terephthalic acid, neopentyl glycol (NPG), 1,4-cyclohexanedimethanol (CHDM), ethylene glycol (EG), and / or 2,2,4,4-tetramethyl-1,3-cyclobutanediol residues, in certain compositional ranges that are <4 mm thickness, have a high level of recycled PET content, have low haze and are recyclable in a PET stream.

The present application relates to carbon dioxide absorbent technical field, especially relates to a kind of ionic liquid-like carbon dioxide absorbent preparation method.The present application includes the following steps: (one) synthesis preparation: the choline chloride and urea are made into low eutectic solvent DES, polyamide amine PAMAM G1 and low eutectic solvent DES are made into absorbent;(two) mixing and heating: after drying raw material is added to heating container, add dioxane as solvent, place in oil bath, stirring heating, mixture gradually from turbid solid becomes homogeneous, transparent, viscous liquid;(three) purification and water removal: after forming homogeneous liquid, in vacuum stirring, to remove moisture, and the final product is liquid ionic liquid carbon dioxide absorbent.The beneficial effect is: the preparation method of the present application is simple and controllable, reaction condition is mild, easy to scale production, provides a feasible technical scheme for industrial application;Solve the existing absorbent active site few, the problem of low carbon dioxide capture amount.

The invention discloses a preparation method of a NiII-containing coordination polymer and research on the inhibition effect of the NiII-containing coordination polymer on soil urease and nitrifying bacteria, and the preparation method comprises the following steps: synthesizing N, N-dimethylformamide by taking pyridine-3-carboxylic acid and 1, 2-ethylenediamine as raw materials; the invention discloses a novel coordination polymer [Ni (1, 4-chdc) (3-dpy) (H2O) 2], which is prepared by the following steps of: synthesizing N, N '-bis (3-pyridinecarboxamide)-1, 2-ethane by using NiCl2. 2H2O, the synthesized N, N'-bis (3-pyridinecarboxamide)-1, 2-ethane and 1, 4-cycloadipic acid through a hydrothermal method, and researching the influence of the novel coordination polymer [Ni (1, 4-chdc) (3-dpy) (H2O) 2] as an inhibitor on soil urease and nitrifying bacteria by analyzing the crystal structure of the novel coordination polymer [Ni (1, 4-chdc) (3-dpy) (H2O) 2]. The research on the compound as an inhibitor reduces the conversion of urea from urea N to ammonium nitrogen and the conversion of ammonium nitrogen to nitrate nitrogen, improves the utilization rate of the fertilizer urea and the stability of the urea, reduces environmental pollution and improves the grain yield. Compared with a traditional inhibitor, the novel NiII coordination polymer serving as a urease and nitrification inhibitor has the advantages of longer half-life period, small toxic and side effects, low preparation cost and more comprehensive functions, the utilization rate of nitrogen fertilizer urea can be greatly increased, the grain yield is increased, and the environmental pollution is reduced.

A system of solvent rearrangement heat hot water as the heat source of benzene distillation, the system includes hot water storage tank, the hot water storage tank passes through gas phase cyclohexane condenser and high efficiency heat exchanger in benzene distillation tower in proper order through pipeline and then backflow to hot water storage tank, forms closed cycle loop, the temperature range of hot water in hot water storage tank is 70-90 DEG C, and the outside of the pipeline is provided with heat preservation layer to reduce heat loss. The utility model discloses the advantages in that, can efficiently recover solvent rearrangement waste heat, reduce the energy consumption of benzene distillation.