469 results about "Cyclohexane" patented technology

The invention provides a polyester-based composite functional master batch as well as a preparation method and application thereof. The polyester-based composite functional master batch is prepared from the following components in parts by weight: 54 to 100 parts of polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol ester, 4 to 27 parts of a lubricating agent, 0.5 to 2 parts of a compatilizer, 0.5 to 10 parts of a light diffusion agent, 1 to 8 parts of a dispersing agent and 4 to 10 parts of tackifying resin. The polyester-based composite functional master batch provided by the invention is added in the process of processing and forming a polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol ester-based light diffusion plate, so that the flowability and the demolding property can be improved, and the prepared product has excellent light transmittance and haze at the same time.

The invention relates to the technical field of coatings, and provides an antifouling coating as well as a preparation method and application thereof. The antifouling paint comprises a component A and a component B, wherein the component A comprises fluorosilicone modified acrylic resin, fluorinated paraffin, modified nano attapulgite, a wetting agent, a defoaming agent and a dispersing agent; a modifying agent of the modified nano attapulgite is 2-imidazole-1-ethylamine and 2-(3, 4-cyclohexyl oxide) ethyl triethoxy silane, and a modifying agent of the modified nano attapulgite is 2-imidazole-1-ethylamine and 2-(3, 4-cyclohexyl oxide) ethyl triethoxy silane; and the component B comprises a curing agent and a diluent. The nano attapulgite is modified, so that the dispersity of the nano attapulgite in the coating and the compatibility of the nano attapulgite with resin are improved, the nano attapulgite can be subjected to cross-linking reaction with other network structures to form a more compact cross-linked network, and the mechanical strength and the wear resistance of the coating are further improved.

The present invention relates to a composition containing A) 60 to 93 wt. % of at least one aromatic polycarbonate, polyester carbonate or mixtures thereof, B) 2 to 20 wt. % of a polyester on the basis of an aromatic or cycloaliphatic dicarboxylic acid or mixtures thereof and cyclohexane dimethanol and optionally an additional aliphatic diol, and C) 1 to 20 wt. % of at least one phosphorus-containing flame retardant. The invention also relates to a component that contains the composition and to the use of components B and C in the indicated quantities in order to improve CTI and flame retardancy of polycarbonate compositions.

The present invention provides a polyester heat-shrinkable film containing recycled materials and a preparation method thereof, belonging to the technical field of polymer synthetic films. The raw materials of the polyester heat-shrinkable film include recycled PET polyester particles, PET polyester chips, and a modified masterbatch; the modified masterbatch is prepared from polyethylene terephthalate-1,4-cyclohexanedimethanol ester, triphenyl phosphite, polyethylene glycol block copolymer, nano-silica, and hyperbranched polyester amine; the polyethylene glycol block copolymer is prepared from polyethylene glycol and γ-valerolactone under the action of a catalyst; the hyperbranched polyester amine is prepared from trimethylolpropane, methyl crotonate, and diethylenetriamine. The product of the present invention has excellent properties such as excellent unidirectional anti-shrinkage performance and low haze.

The present invention combines a fluorescence sensor with an array to provide a fluorescence sensing array detection platform and a detection method for multiple plasticizers. The fluorescence sensing array detection platform includes a B-doped graphene quantum dot solution using N,N-dimethylformamide as a solvent and a B-GQDs solution using cyclohexane as a solvent; the fluorescence intensity of the B-GQDs solution with DMF as the solvent at the fluorescence characteristic peak obtained under ultraviolet light excitation at a wavelength of 350 nm, and the fluorescence data at 391 nm, 413 nm, and 434 nm are used as array points 1, 2, and 3; the fluorescence intensity of the B-GQDs solution with CH as the solvent at the fluorescence characteristic peak obtained under ultraviolet light excitation at a wavelength of 350 nm, and the fluorescence data at 386 nm, 408 nm, and 430 nm are used as array points 4, 5, and 6; thus, a 3×2 fluorescence sensor array is constructed. The detection method using the fluorescence sensor array of the present invention has simple steps, and has satisfactory specificity, reproducibility, stability and practicability, and has application potential.

According to the PETG environment-friendly floor, the traditional PVC material is replaced with polyethylene terephthalate-1, 4-cyclohexanedimethanol, potential risks to human health and the environment are reduced, through the design of a multi-layer structure, the abrasion resistance, the decoration performance and the structural stability of the floor can be enhanced, and the service life of the floor is prolonged. The invention also provides a preparation method of the PETG environment-friendly floor. Through cooperation of the high-speed stirrer and the low-speed stirrer, preliminary mixing and plasticizing of raw materials are promoted, meanwhile, the raw materials are prevented from being over-plasticized, uniform mixing of the raw materials is ensured, the roller press is adopted, the wear-resistant layer and the decorative film layer are pre-attached while shading is pressed on the base material layer, then rapid forming and attaching and surface pattern decoration of the wear-resistant layer, the decorative film layer and the base material layer are achieved, and the production efficiency is improved.

The invention discloses a halogen-free flame-retardant regenerated PET material for steel coil packaging and a preparation method thereof, and belongs to the technical field of regenerated PET materials, and the halogen-free flame-retardant regenerated PET material for steel coil packaging is characterized by comprising the following raw materials in parts by weight: 100 parts of regenerated PET, 5-10 parts of POE-g-GMA, 4-8 parts of a flexibilizer, 1-3 parts of polyethylene glycol terephthalate, 1-3 parts of a flame retardant, 1-3 parts of an antioxidant, 1-3 parts of a lubricant, and 1-3 parts of a lubricant. The regenerated PET material is prepared from the following components in parts by weight: 15-20 parts of 1, 4-cyclohexanedimethanol ester, 3-7 parts of a flame retardant, 1-3 parts of a stabilizer and 0.3-0.5 part of an antioxidant, so that the effect of improving the impact resistance of the regenerated PET material is achieved.

A polyurethane resin of the present invention includes a reaction product of a polyisocyanate component and a chain extending component, and the polyisocyanate component consists of a prepolymer composition including an isocyanate group-terminated prepolymer and a free polyisocyanate monomer; the isocyanate group-terminated prepolymer includes the reaction product of a bis(isocyanatomethyl)cyclohexane and a macropolyol having a number average molecular weight of 800 or more and 1800 or less; the isocyanate group concentration of the prepolymer composition is above 12% by mass and below 20% by mass; and the chain extending component is an aromatic diamine compound.

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 thin-layer chromatography method for identifying lignum dalbergiae odoriferae and adulterants thereof, and belongs to the technical field of thin-layer chromatography analysis. By improving a developing system, the volatile oil and the flavone in the dalbergia wood can be simultaneously identified by only one developing solvent, so that the operation steps are simplified, and the identification time is shortened; according to the method, common and non-toxic cyclohexane, ethyl acetate and acetic acid are adopted as developing solvents, toxic and harmful reagents such as methylbenzene, trichloromethane and diethyl ether are prevented from being used, volatile oil and flavone are effectively separated, and meanwhile use of the toxic reagents is reduced; the invention also provides a novel volatile oil detection method, which comprises the following steps: spraying a mixed solution composed of a vanillin sulfuric acid solution and absolute ethyl alcohol, heating, and placing under a 365nm ultraviolet lamp for detection to display fluorescent spots with different colors, thereby overcoming the problem of weak identification capability caused by the color intensity in the existing method.

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 utility model provides a caprolactam rectification heat energy coupling utilization system, which comprises a cyclohexane refining tower, a cyclohexene separation tower and a debenzolization tower which are communicated in sequence, in the system, high-temperature gas-phase materials generated by the cyclohexane refining tower and the cyclohexene separation tower and kettle bottom liquid in the next tower are subjected to heat exchange treatment through a falling film evaporator, and the cyclohexene separation tower and the kettle bottom liquid in the next tower are separated; the feeding temperature of the next tower is increased, so that the heat utilization of high-temperature steam is improved, the use of steam is reduced, and the production cost is reduced; meanwhile, the use of fire coal is reduced, the emission of waste gas is reduced, and the environment is protected.

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 present invention relates to a process for the preparation of a compound of formula (I), a stereoisomer, a salt, a hydrate or a solvate thereof, (II) comprising the step of sulfinylation of a compound of formula (IV) to produce compound of formula (II); (IV) wherein: R1 and R2 are as defined in the claims, wherein said sulfinylation step is performed in the presence of a solvent selected from the group comprising benzene, toluene, ethylbenzene, xylene, chlorobenzene, bromobenzene, fluorobenzene, anisole, nitrobenzene, tetralin, dichlorobenzene, trimethylbenzene, ethylacetate, propylacetate, butylacetate, propanol, butanol, 2- methyltetrahydrofuran, diethylether, methyltertbutylether, cyclopentyl methyl ether, dichloromethane, tetrachloromethane, pentane, hexane, heptane, cyclohexane, decaline and mixtures thereof.

The invention discloses an extractive distillation dehydration separation method of an isopropanol and water azeotropic system, and relates to the field of distillation dehydration. According to the method, an azeotropic entrainer methyl cyclohexane is added into a rectifying tower, the azeotropic entrainer methyl cyclohexane can be mixed with raw materials and can also be added at a position higher than a feeding position in the tower, and the azeotropic entrainer methyl cyclohexane and water form a new low-boiling-point azeotrope. According to the characteristics that an azeotrope formed by methylcyclohexane and water is an unstable azeotrope and the intersolubility of methylcyclohexane and water is low at normal temperature, a tower top reflux tank can be set as an oil-water separator to separate oil-phase methylcyclohexane and water in a water phase, the oil-phase methylcyclohexane is used as an azeotropic entrainer to flow back into the tower, the water is discharged as waste liquid, and the azeotrope is recycled. Therefore, the isopropanol is separated from the water to obtain the high-purity isopropanol. The method has the advantages of simple process, low energy consumption, high product purity, environment-friendly azeotropic entrainer and the like, and is suitable for large-scale industrial production.

The invention relates to the technical field of powder coatings, and provides a high-temperature-resistant powder coating and a preparation method thereof. The high-temperature-resistant powder coating is prepared from the following raw material components in parts by mass: 18 to 22 parts of vinyl silicone resin, 12 to 22 parts of novolac epoxy resin, 1 to 6 parts of 1, 4-cyclohexanedimethanol glycidyl ether, 12 to 14 parts of acrylic resin, 50 to 60 parts of filler and 2 to 3 parts of curing agent, the mass content of vinyl in the vinyl silicon resin is 1.29%-1.33%. According to the technical scheme, the problem of poor high-temperature resistance of the powder coating in the related technology is solved.

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.

The present invention relates to a process for the preparation of trioxane derivatives.

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 invention belongs to the technical field of nano calcium carbonate, and particularly relates to a preparation process of special nano calcium carbonate for rubber and plastic, which comprises the following steps: adjusting the density of refined lime milk, and adding a dispersing agent to obtain atomized slurry; a C02 / N2 mixed gas is introduced into the bottom of the carbonization tower, the atomized slurry is vertically sprayed out from the top, an amorphous intermediate is generated through a reaction, and a carbonized solution is obtained; transferring the carbonized solution to a carbonization kettle, adding a crystal form control agent, cyclohexane, a nonionic surfactant and a cosurfactant, and carrying out ultrasonic dispersion to form a water-in-oil microemulsion; introducing C02 / N2 mixed gas into the carbonization kettle, and carrying out carbonization reaction to obtain nano calcium carbonate slurry; the modified nano calcium carbonate slurry is subjected to dehydration, washing, drying and air jet pulverization, and the special high-specific-surface-area spherical-like network-shaped nano calcium carbonate particles for rubber and plastic are obtained. According to the process, integration of high reinforcing performance and long-acting anti-ultraviolet function of the nano calcium carbonate in the rubber is realized.

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 invention provides a whitening composition as well as a preparation method and application thereof, and belongs to the technical field of cosmetics. According to the whitening composition provided by the invention, the isopropyl lauroyl sarcosinate, the diisopropyl sebacate, the PPG-14 polyglycerol-2 ether, the bis-diethoxy diglycol cyclohexane 1, 4-dicarboxylate and the poly C10-30 alkanol acrylate are used as oil phases to wrap the whitening components (magnolol, pterostilbene, ferulic acid and dimethyl methoxy benzodihydropyranol) so as to form oil sacs, so that the whitening composition can be used for whitening the skin; and then dispersing in a polyhydric alcohol and carbomer matrix to control the composition of the oil phase and the whitening component, so that the whitening effect and the transdermal absorption effect of the whitening composition are improved.