200 results about "Cyclohexane" patented technology

The invention discloses a crystallinity low-melting-point polyester fiber and a preparation method thereof, and relates to the technical field of polyester fibers, the crystallinity low-melting-point polyester fiber is composed of a skin layer and a core layer, and a skin-core integrated crystallization design is adopted; the skin layer is modified copolyester, and the core layer is modified PET; the modified copolyester is prepared from the following raw materials in parts by weight: 38 to 42 parts of terephthalic acid, 12 to 15 parts of 2, 5-furandicarboxylic acid, 28 to 32 parts of 1, 4-cyclohexanedimethanol, 8 to 10 parts of polycaprolactone, 1.0 to 1.5 parts of a crystallization coordinating agent, 0.5 to 1.0 part of an antioxidant and 0.3 to 0.5 part of a hindered amine light stabilizer. The crystallization coordinating agent is prepared by compounding hydroxylated graphene and maleic anhydride grafted polyolefin elastomer according to a mass ratio of (2 to 3): 1. The fiber is good in high temperature resistance and durability, low in melting point, good in size stability and long in service life.

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 invention relates to the technical field of waterproof materials, and particularly discloses an acrylic acid waterproof coating and a preparation method thereof. The acrylic acid waterproof coating provided by the invention is prepared from the following raw materials: a weather-resistant high-elastic emulsion, a modified filler, an auxiliary agent and water, the weather-resistant high-elasticity emulsion is prepared from the following raw materials: high-elasticity acrylic emulsion, vinyl-terminated hydroxyl-terminated fluorine-containing silicone oil, diisocyanate and dihydric alcohol; the modified filler is prepared from the following raw materials: barium sulfate, wollastonite, oleic acid modified titanium dioxide, an anionic dispersant and 2-ethylhexyl diphenyl phosphate; the auxiliary agent is prepared from cyclohexane-1, 2-dicarboxylic acid diisooctyl ester. Through the design of the weather-resistant high-elastic emulsion and the modified filler, and in cooperation with the specific plasticizer and other auxiliaries, the comprehensive properties such as adhesive force, water resistance, weather resistance and low temperature resistance of the acrylic waterproof coating are improved.

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.

The invention discloses a modified cake meal protein-based degradable membrane material as well as a preparation method and application thereof. The membrane material is prepared from the following raw materials: a modifier and a cake meal protein solution, the modifier is prepared from the following raw materials: aryl diazacyclohexane and a three-arm star s-P (NIPAM-co-DMAM); the modifying agent and the cake protein form a three-dimensional cross-linked network structure through an electric field auxiliary curing technology, the prepared membrane material has excellent mechanical properties and controllable degradation characteristics, meanwhile, low-temperature efficient forming is achieved, production energy consumption is remarkably reduced, and an innovative solution is provided for high-value utilization of agricultural waste.

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.

The present invention provides a polyester wherein: a dicarboxylic acid constituent unit includes 72.5 mol% or more of a constituent unit derived from 2,6-naphthalenedicarboxylic acid and / or an ester derivative thereof among a total 100 mol% of said dicarboxylic acid constituent units; and a diol constituent unit includes 27.5 mol% or more of a constituent unit derived from 1,4-cyclohexanedimethanol and a constituent unit derived from 2,2,4,4-tetramethyl-1,3-cyclobutanediol among a total 100 mol% of said diol constituent units. A feeding bottle according to the present invention is formed using said polyester.

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 present invention provides a polyester wherein: a dicarboxylic acid constituent unit is a constituent unit derived from 2,6-naphthalenedicarboxylic acid and / or an ester derivative thereof; and a diol constituent unit includes a constituent unit derived from any isosorbide, and 27.5 mol% or more of a constituent unit derived from 1,4-cyclohexanedimethanol among a total 100 mol% of said diol constituent units. A feeding bottle according to the present invention is formed using said polyester.

The purpose of the present invention is to provide a polyester-based heat-shrinkable film which is suitable for heat-shrinkable label applications and which is less apt to become loose after having been applied as labels and does not become distorted when applied as labels. This polyester-based heat-shrinkable film has ethylene terephthalate units, and the polyester resin components include the following amorphous components: 8-20 mol% of 1,4-cyclohexanedimethanol-derived constituent unit included in 100 mol% of the diol components; and an adipic-acid-derived constituent unit and an isophthalic-acid-derived constituent unit included in 100 mol% of the dicarboxylic acid components in such amounts that the molar ratio of the content of each of the constituent units to the content in mol% of the 1,4-cyclohexanedimethanol-derived constituent unit is 0.1-0.5. The polyester-based heat-shrinkable film has a hot-water shrinkage and a shrinkage stress which satisfy given ranges.

The invention relates to the technical field of sesamol extraction, in particular to a sesamol extraction process for food preservation, which comprises the following steps: step 1, raw material pretreatment: pretreating prepared sesame raw materials, selecting qualified sesame raw materials, removing impurities, rinsing the sesame raw materials with clear water, and draining the sesame raw materials for later use; step 2, carrying out drying treatment on the drained sesames; and step 3, squeezing and degreasing the dried sesame to obtain sesame cake meal and sesame oil. Microwave pretreatment is adopted to replace traditional baking, more polyphenol active ingredients are reserved, dried sesame is squeezed and degreased, purified sesame oil serves as a raw material and is soaked in organic solvents such as ethyl alcohol and petroleum ether, a soaked mixed solution is separated and purified, the mixed solution is subjected to reduced pressure distillation and concentration, an extracting solution is obtained, and the finished product is obtained. And carrying out freeze drying or vacuum drying to obtain a crude extract, and recrystallizing the crude extract with petroleum ether or cyclohexane to obtain the high-purity sesamol, so that the purity of the sesamol obtained by the method is high.

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.

The invention discloses a centrifugal filter device for producing alkyl cyclohexyl cyclohexanecarboxylic acid, which comprises an outer sleeve barrel, a variable-frequency transmission component is mounted in the outer sleeve barrel, bent connecting rods are fixedly mounted on two sides of the bottom of the outer sleeve barrel, and a fixing plate is fixedly mounted at one end, far away from the outer sleeve barrel, of each bent connecting rod. A driving assembly is fixedly installed at the bottom of the fixing plate, two connecting columns are fixedly installed at the bottom of the fixing plate, a communicating box is fixedly installed at the bottoms of the two connecting columns, and the bottom of the communicating box communicates with a liquid discharging pipe; through the arrangement of the variable-frequency transmission assembly, the device can continuously change the rotating speed of the throwing and filtering assembly, and the centrifugal force can be dynamically adjusted through continuous speed change, so that substances with different densities and particle sizes are subjected to the action of different centrifugal forces in the centrifugal process. The dynamic centrifugal force adjustment can more thoroughly separate dry and wet components in the materials, and compared with a traditional stable-speed throwing and filtering device, the separation effect is more remarkable.

The invention belongs to the technical field of wearing armours, particularly relates to a composite material 3D (three-dimensional) wearing armour, and aims to solve the problems that the existing wearing armour is relatively high in hardness and poor in fitting property in the use process, part of materials can release harmful substances, or pollution is caused to the environment in the production, use and discarding processes, and the wearing armour cannot be used for a long time. In order to solve the problems in the prior art that certain environmental protection and health risks exist in the prior art, the invention provides the following scheme that the material comprises the following raw materials in parts by weight: 40-60 parts of thermoplastic polyurethane; the thermochromic coating is prepared from thermoplastic polyurethane, polyvinyl butyral, polymethyl methacrylate, a polyolefin elastomer, diisononyl cyclohexanedicarboxylate, acetyl tributyl citrate, nano silicon dioxide aerogel, cellulose nanocrystal, organic montmorillonite, thermochromic microcapsules, rare earth aluminate fluorescent powder, polyethylene wax and fumed silica, and the thermochromic coating is prepared from the following components: thermoplastic polyurethane, polyvinyl butyral, polymethyl methacrylate, polyolefin elastomer, diisononyl cyclohexanedicarboxylate, acetyl tributyl citrate, nano silicon dioxide aerogel, cellulose nanocrystal, organic montmorillonite, thermochromic microcapsules, rare earth aluminate fluorescent powder, polyethylene wax and fumed silica. By using polyethylene glycol, the hardness and flexibility of the product are effectively improved, and the product is environment-friendly, non-toxic and harmless.

The invention relates to a polyamide (PA) exhibiting a melting temperature Tm strictly below 290 DEG C and comprising repeating units formed by polycondensation of a diamine component (A) and a dicarboxylic acid component (B), in which: c) the diamine component (A) comprises:-between 15.0 and 25.0 mol% of 1, 6-hexamethylenediamine; between 18.0 and 30.0 mol% of a diamine selected from the group consisting of 1, 9-diaminononane, 1, 10-diaminodecane, and a combination of said two diamines; between 50.0 and 64.0 mol% of a diamine selected from the group consisting of 1, 3-bis (aminomethyl) cyclohexane, 1, 4-bis (aminomethyl) cyclohexane and a combination of said two diamines; the proportions in mol% are based on the total amount of diamines in the diamine component (A); d) the dicarboxylic acid component (B) comprises:-between 95.0 and 100.0 mol% of terephthalic acid; between 0 and 5.0 mol% of another diacid selected from the group consisting of isophthalic acid, adipic acid and a combination of the two said diacids; the proportions in mol% are based on the total amount of dicarboxylic acids in the dicarboxylic acid component (B).

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 provides a device and method for producing engineering plastics through continuous polymerization of a rubber solution, and the device comprises a direct rubber solution conveying system which is provided with a polymerization kettle; the premixing unit comprises a dynamic mixer and a premixing kettle; the solvent recovery system comprises a devolatilization tower and an azeotropic rectification tower; wherein the polymerization kettle is directly connected with the premixing unit through a thermal insulation pipeline. According to the invention, the glue solution is directly used for polymerization production of ABS or HIPS, and the cyclohexane solvent is refined and recycled, so that the problems of high energy consumption, low efficiency, complex flow, environmental pollution and the like in the traditional process can be solved.

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.

The invention discloses a polyester film, a preparation method and a polyester film veneer furniture board. The polyester film comprises a hot-melt back adhesive layer and a polyester layer which are attached to each other, the polyester layer is prepared from the following raw materials in percentage by mass: 60 to 80 percent of poly (1, 4-cyclohexanedimethanol terephthalate), 15 to 25 percent of polyphenylene sulfide, 2 to 5 percent of maleic anhydride-styrene-glycidyl methacrylate copolymer, 1 to 3 percent of filler and 0.1 to 2 percent of additive. By adopting the polyester film with the PCT and PPS composite resin as the core, the problem that the deep embossing effect cannot be achieved on the surface of a current home building material film facing material is effectively solved.

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%.

This application relates to the field of protective films, disclosing a fingerprint-resistant and nail-print-resistant protective film and its preparation method. The fingerprint-resistant and nail-print-resistant protective film comprises, from top to bottom, a nano-anti-fingerprint coating, a self-healing coating, an elastic polyurethane film layer, and an adhesive layer, sequentially bonded together. The nano-anti-fingerprint coating is a nano-fluorine-containing coating, the self-healing coating is a self-healing polyurethane coating, and the adhesive layer is obtained by curing an adhesive. The adhesive is made from the following raw materials in parts by weight: 60-80 parts acrylic resin, 10-20 parts hydroxyacrylate monomer, 5-8 parts dipentaerythritol hexaacrylate, 3-5 parts cyclohexanediol-1,4-diacrylate, 2-6 parts methyl methacrylate, 1-5 parts isobornyl acrylate, 3-6 parts photoinitiator, and 1-3 parts antioxidant. The resulting protective film exhibits good fingerprint and nail-print resistance while also possessing high clarity and adhesion stability, and is not prone to edge lifting.

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.