844 results about "PEG 400" patented technology

The invention discloses a green synthesis method for high-content carvacrol capable of replacing natural oregano. The method comprises the steps of taking food-grade L-carvone as raw material, adopting organic acid or inorganic acid as a main catalyst, taking PEG-400 or PEG-600 as an auxiliary catalyst and preparing the high-content carvacrol through intramolecular rearrangement reaction. The method adopts one step to synthesize a target product, and has the advantages of mild reaction conditions and convenient operation. The product is high in yield and good in quality, and can replace natural carvacrol. As no solvent harmful to human body and environment is added in reaction, the method is safe and friendly to environment.

The invention relates to the technical field of cigarette materials, in particular to a slow release aromatic base material, particles as well as a preparation method and application thereof. The slow release aromatic base material comprises the following raw materials: a pore-foaming agent, an adhesion agent and porous polysaccharides, wherein the weight ratio of the pore-forming agent to the adhesion agent is (10-16) to (2-8), and the weight ratio of the total weight of the pore-forming agent and the adhesion agent to porous polysaccharides is (1-9) to (1-7); the pore-forming agent comprises chitosan and polyethylene glycol 400, and selectively comprises one or combination of several of polyacrylic resin, calcium carbonate and sodium hydrogen carbonate; the adhesion agent is de-ionized water, a propylene glycol aqueous solution or an ethanol aqueous solution. According to the slow release aromatic base material, the raw materials are natural degradable materials, are nontoxic and harmless, and can better adsorb volatile Maotai spirit aroma components to achieve an aromatic effect; Chinese wine essence is released along with smoke in a smoking process, so that perfect harmony of cigarette and wine aromas is achieved.

The invention discloses a liquid wound dressing which is characterized by comprising the following raw materials in parts by weight: 100-180 parts of a medical polymer film forming material, 0-20 parts of chitosan, 10-25 parts of polyethylene glycol 400 and 10-28 parts of glycerin, wherein the medical polymer film forming material is one in polyvinyl alcohol and polyvinyl butyral or a mixture of carbomer and one in the polyvinyl alcohol and the polyvinyl butyral. The liquid wound dressing can absorb the wound exudate, can effectively debride, maintains the surface of a wound to be wet, promotes the wound healing and is good in sterilizing effect.

The invention relates to a polylactic acid degradable film with controllable degradable time, belonging to the technical field of medical appliances. The polylactic acid degradable film comprises the following components in percentage by weight: 1%-35% of plasticizer and 65%-99% of polylactic acid, polylactic acid-glycollic acid copolymer, polyglycollic acid-epsilon-caprolactone copolymer, polylactic acid-epsilon-caprolactone copolymer or polylactic acid-glycollic acid-epsilon-caprolactone copolymer, wherein the plasticizer is more than one of citrate ether, glucose monoester ether, fatty acid ester ether, polyethylene glycol 400-2,000, low-molecular weight polylactic acid, glycerol, glycerol triacetate and ethylene glycol monobutyl ether acetate. The manufactured polylactic acid degradable film of the invention has good strength and controllable degradable time, can be used for a human body, such as an anti-adhesion film in a surgical operation, a digestive stent, a biliary stent, a prostate stent, an endovascular stent, an intrauterine stent and a medical appliance fitting, and can be used for preparing the required controllable polylactic acid degradable film according to the clinical requirements.

Provided is a preparation method for an antifogging thin film coating with high light transmission. M-phthalic acid triethylene glycol ester-5-sodium sulfonate (self made), polyethylene glycol 400, isophorone diisocyanate and pentaerythritol triacrylate are employed as main raw materials, dibutyltin dilaurate is employed as a catalyst, dimethylolpropionic acid is employed as a chain extender, acetone is employed as a solvent, and hydrophilic UV prepolymers are prepared; ethyl orthosilicate is employed as a precursor, gamma-methacryloxy propyl trimethoxysilane is employed as a modifier, a sol-gel method is employed, and uniform and stable modified SiO2 sol is prepared; the hydrophilic UV prepolymers and the modified SiO2 sol are subjected to hybridization through a UV curing way, and a thin film coating is obtained. The prepared thin film coating has good hardness and adhesive force, water resistance and high light transmission and good antifogging effects, and can be used for antifog of surfaces of glass and eyeglass. The preparation technology of the thin film coating accords with green environmental protection concepts, curing and film forming are fast, and comprehensive performances are good. The antifogging thin film coating has good market prospect and is suitable for popularization and application.

The invention discloses a method for extracting squalene by using camellia oleosa seeds as raw materials and tea oil and squalene soft capsules and relates to the technical field of biomedicine. The extraction method comprises the following process flows of material preparation, grinding, leaching, concentration, methyl esterification, complexant-borax reaction, macroporous resin chromatographic separation and purification, concentration, extraction, washing, concentration, preparation of squalene crude oil and supercritical carbon dioxide extraction, so that squalene essential oil with the squalene content of more than or equal to 80 percent is obtained. The tea oil and squalene soft capsules are prepared from the following raw materials in percentage by weight: 87 to 90 percent of squalene essential oil with the squalene content of more than or equal to 80 percent, 3 to 5 percent of polyethylene glycol 400, 2 to 3 percent of beewax and 2 to 5 percent of phospholipid. The raw material resources are wide. The prepared tea oil and squalene soft capsules not only can be used for medicine, but also can be used for food therapy, are particularly suitable for administration of treatment and food therapy of patients suffering from hepatitis, fatty liver, acute and chronic inflammation, tumor, chemotherapy, diabetes mellitus and cardio-cerebrovascular disease and have no toxic or side effects.

The invention provides aluminum oxide polishing solution used for polishing sapphire. The aluminum oxide polishing solution is aqueous solution comprising the following components: 12-26wt% of alpha-aluminum oxide powder with the particle size of 80-350nm, 0.5-1.2wt% of a dispersing agent, 0.04-1.2wt% of a lubricating agent, 0.05-0.7wt% of a complexing agent, 0.08-0.4wt% of a preservative and 2.4-5wt% of a pH value regulator, wherein the dispersing agent is one or more than one of poly vinyl alcohol, polyvinylpyrrolidone, alkylphenol polyoxyethylene and fatty alcohol polyoxyethylene ether, thelubricating agent is one or more than one of polyethylene glycol 400, polyethylene glycol 600 and glycerin, the complexing agent is one or more than one of sodium gluconate, sodium lactate and potassium citrate, and the preservative is one or more than one of benzotriazole, potassium borate and sodium borate. The polishing solution provided by the invention has high polishing efficiency in a sapphire processing process, lubricating effect is excellent, a processed product surface is good in quality, and the polishing solution is simple in preparation method, low in cost and beneficial to industrial popularization and application.

This invention discloses an aid used in terylene dyeing characterizing in including the following components in weight percentage: acid aid 10-20%, organic phosphonic acid 2-5%, organic carboxylic acid 3-7%, naphthalenesulfonate 10-18%, PEG 400 single oleic acid ester 5-8%, non-ion PAA 0-2%, polytrimethylene polyethenoxy aether 0-3% and water.

The invention relates to the field of functional materials, particularly a preparation method of an adsorbent for acid dye wastewater treatment. The invention mainly solves the technical problem that dyeing wastewater can not be easily decolorized, can not achieve the discharge standard and the like in the prior art. The preparation method comprises the following steps: putting 8-10g of beta-cyclodextrin into 1-2g of citric acid monohydrate, and adding 1g of PEG-400 and 0.25g of sodium dihydrogen phosphate to obtain a beta-cyclodextrin polymer by polymerization; adding a silane coupling agent into a chitosan solution; and cross-linking the beta-cyclodextrin polymer with the chitosan to obtain a beta-cyclodextrin-chitosan porous membrane, wherein the mol ratio of the chitosan to the beta-cyclodextrin polymer is 1:3..

The invention relates to a composite solvent and extraction method for extracting and separating aromatic hydrocarbons from a hydrocarbon mixture in industries of oil refining and chemical engineering, which can achieve the advantages of high aromatic hydrocarbon separation efficiency, favorable heat stability and convenient recovery process. The technical scheme is as follows: the composite solvent comprises the following solvents in percentage by mass: 45-95% of main solvent, 4.5-40% of auxiliary solvent and 0.5-15% of modifier, wherein the main solvent is one of sulfolane or N-formyl morpholine or dimethylsulfoxide or tetraethylene glycol, the auxiliary solvent is one of N-methylpyrrolidone or N,N-dimethylformamide, and the modifier is one of ethylene glycol or polyethyleneglycol; and a preparation method of the composite solvent comprises the following steps: proportionally adding the modifier into the auxiliary solvent, evenly mixing, proportionally adding the mixed solvent into the main solvent, and evenly mixing to prepare the composite solvent. The composite solvent obviously enhances the solubility and selectivity of the solvent on aromatic hydrocarbons, avoids the increase of energy consumption and the occurrence of hydrolysis reaction caused by the situation that water is contained in the solvent, reduces the consumption of the solvent and increases the aromatic hydrocarbon recovery rate.

A low-temperature and high-voltage resistant aluminum electrolytic capacitor work electrolyte comprises by the mass percent: 45-75% of the main solvent, the 15-40% of the secondary solvent, 3-12% of the solute, 0.5-2% of the flash fire promotion additive, 0.2-1.5% of the gas absorption additive; the main solvent is one or more than one of the ethylene glycol, the propylene glycol, the glycerol, the polyethylene glycol 200 and the polyethylene glycol 400. The secondary solvent is one or more than one of the [Gamma]-butyrolactone, the dimethylformamide, the diglycolic simple methyl ether, the diethylene glycol monoethyl ether and the diethlyeneglycol monobutylether. The secondary solvent can be propylene carbonate and one or more than one of the [Gamma]-butyrolactone, the dimethylformamide, the diglycolic simple methyl ether, the diethylene glycol monoethyl ether and the diethlyeneglycol monobutylether. The low-temperature and high-voltage resistant aluminum electrolytic capacitor work electrolyte can resist the -55 DEG C and high voltage of 600V.

The invention discloses a foamed ceramic based photocatalytic component and a preparation method thereof. The foamed ceramic based photocatalytic component is formed by loading nano TiO2 on foamed ceramic. The preparation method includes: (1) preparing TiO2 sol, adding P25 and polyethylene glycol 400 into the sol, and uniformly mixing to obtain mixed liquor; (2) soaking the foamed ceramic cleaned and dried in advance into the mixed liquor, performing ultrasonic treatment, taking the foamed ceramic out after ultrasonic treatment is finished, drying, and repeating the steps for several times to obtain the foamed ceramic loaded with TiO2; and (3) calcining the foamed ceramic loaded with the TiO2 so that the foamed ceramic based photocatalytic component is obtained. The foamed ceramic based photocatalytic component and the preparation method provide a novel idea for the photocatalytic technology on load and application, and the preparation method is simple to operate and low in cost and has excellent industrialization prospects.

The invention discloses a method for preparing perovskite oxide LaMnO3 hollow spheres, which comprises the following steps of: dissolving lanthanum nitrate hexahydrate and 50 mass percent aqueous solution of Mn(NO3)2 in a molar ratio of 1:1 into polyethylene glycol 400, wherein 2 to 6 milliliters of polyethylene glycol 400 is used in every 0.01 mol of lanthanum nitrate; and then adding methanol into the solution, pouring the mixed solution into a container filled with PMMA (polymethyl methacrylate) to fully wet the PMMA, suction filtering, drying at room temperature, filling the dried product into a magnetic boat, putting the magnetic boat into a tube furnace, heating the product to 300 DEG C from room temperature at the speed of 1 DEG C per minute under the atmosphere of N2 and keeping the temperature of 3 hours, cooling the product to 50 DEG C, then switching the atmosphere to air atmosphere, heating the product to 750 DEG C at the speed of 1 DEG C per minute and keeping the temperature for 4 hours. The method has the characteristics that the raw materials are cheap and easily obtained, the preparation process is simple, the particle morphology and the hole size of the product are controllable and the like.

The invention discloses whitening tendering skin-maintaining toner. The whitening tendering skin-maintaining toner comprises the following materials of sodium alginate tech grade, bletilla striata extracting solution, lily extracting solution, leonurus extracting solution, honey, oat beta- glucan, sodium hyaluronate, amino acid humectant NMF-50, glycerin, polyethylene glycol 400, sorbitol, normal saline, essence, ethyl p-hydroxybenzoate and ethanol. Compared with prior art, the produced whitening tendering skin-maintaining toner is colorless, appropriate in viscosity, appropriate in consistence, good in stability, fragrant in smell and refreshing in texture. The whitening tendering skin-maintaining toner maintains moisture of skin, reduces wrinkles, improves roughness, dispels black spots, and maintains the skin to be soft, elastic, smooth, beautiful and rosy.

The invention belongs to the field of medical dressings, and particularly relates to glass wound repair gel with biological activity and a preparation method thereof. The gel is prepared from, by weight, 10-40 parts of biological activity glass powder, 2-10 parts of polyethylene glycol 400, 10-25 parts of silica gel, 5-15 parts of sodium hyaluronate gel, 0.1-2 parts of acid particles, 0.5-5 parts of borneol and 0.1-0.5 part of absolute ethyl alcohol. The gel has remarkable treatment effects on treatment of chronic large-area wounds of empyrosis, pressure sores, diabetic feet, contusion, various skin surface anabrosis and the like, and meanwhile the gel has the special effects of preventing adhesion, resisting bacteria, preserving moisture, restraining scar growth and the like.

The invention discloses a manufacturing method of a dual-template of three-dimensionally ordered macroporous lanthanum manganate with a mesoporous wall of hole, comprising the following steps: taking a polymethyl methacrylate (PMMA) microballoon as a hard template, L-lysine or a triblock copolymer P123 as a soft template, polyethylene glycol 400 as an additive, and methanol and water as solvents, and then dipping the PMMA hard template in mixed solution containing a soft template agent, the additive, the solvents and soluble metal salt to finally obtain the perovskite oxide LaMnO3 of a three-dimensionally ordered macroporous structure with the mesoporous wall of hole using a two-step roasting method (roasting in nitrogen atmosphere followed by air atmosphere). The manufacturing method has the characteristics of cheap and available raw materials, simple manufacturing process, controllable particle shape and controllable size of a hole for the product and the like.

The invention discloses a method for preparing graphene-containing phenolic foams and relates to a method for preparing graphene-containing composite phenolic foams. The problem that an existing method for preparing a graphene high polymer composite material is high in cost, low in efficiency, complex in process and unsuitable for large-scale industrial production is solved. The method disclosed by the invention comprises the following steps: 1, preparing expansible graphite treated by a silane coupling agent; 2, mixing the expansible graphite treated by the silane coupling agent, phenol, a formaldehyde aqueous solution and zinc acetate to prepare a mixture A; 3, preparing a graphene-containing phenolic resin; and 4, mixing the graphene-containing phenolic resin, Tween-80, n-pentane, p-toluenesulfonic acid and polyethylene glycol 400 to obtain a mixture B, drying, and standing at room temperature to obtain the graphene-containing phenolic foams. The graphene is generated by utilizing intercalation reaction polymerization heat in situ, so that the graphene and the phenolic resin are synchronously generated, and the efficiency is improved. Meanwhile, the graphene is prevented from being directly taken as a raw material, the preparation cost is reduced, and the method is simple in process and suitable for large-scale industrial production.

A method of preparing a magnetic ZnFe<2>O4/g-C3N4 composite photocatalytic material is disclosed. The method prepares the composite photocatalytic material through a process combining sol gel and calcination. The method includes dissolving Zn(NO3)<2>.6H2O and Fe(NO3)<3>.9H2O into a proper amount of a mixed solution of polyethylene glycol 400 and water, putting into a water bath, stirring for a certain period of time, adding citric acid, putting into a water bath, reacting, adding melamine into the prepared precursor, continuously stirring to form gel, and performing calcination in a muffle furnace to obtain the composite photocatalytic material having high catalytic activity. The method overcomes disadvantages that the photocatalytic efficiency is low and recoverability is poor of a novel semiconductor material g-C3N4. A process of preparing the composite photocatalytic material has advantages of simple and convenient procedures, a high efficiency and easy operation, and avoids generation of waste water and waste residues. The composite photocatalytic material can replace TiO2, ZnO, and other traditional photocatalysts and be applied to photocatalytic purification of organic waste water pollution and air pollution.

The invention belongs to the technical field of medical dressing, and discloses a carbon quantum dot/nano-silver alginate dressing and a preparation method and application thereof. A carbon quantum dot/nano-silver composite material is prepared from silver nitrate, polyethylene glycol 400, sodium citrate, ascorbic acid and carbon quantum dots; and the carbon quantum dot/nano-silver composite material is added to a sodium alginate solution to prepare the carbon quantum dot/nano-silver alginate dressing through an electrostatic spinning technology and a non-woven technology. According to the dressing prepared by the technology, the mechanical property of the alginate dressing can be significantly improved; meanwhile, the dressing has an excellent fluorescent display tracking function; the migration change and the accumulation condition of silver ions in a body can be effectively inspected; and a fast and effective detection method is provided for clinical supervision of the silver ions.

The present invention relates to a nano liquid for decompression and augmented injection of tight oil water-flooding, and a preparation method and application thereof. The nano liquid for decompression and augmented injection is composed of 0.1-1% of hydrophobic nano-silica, 0.3-3% of a dispersant, 0.2-1% of a dispersing aid and the balance of water. The hydrophobic nano-silica has particle size between 12-22 nm, and median diameter between 16-18 nm; and the hydrophobic nano-silica is prepared from fumed nano silica and an organic silicon compound by a wet modification method. The dispersant is octylphenyl polyoxyethylene ether, polyethylene glycol 400, polyethylene glycol 600 or glycerin. The dispersing aid is NaOH, Na2SiO3 or n-butanol. The nano liquid for decompression and augmented injection employs water base dispersion and has the advantages of environment-friendliness, simple preparation and good stability. Under the action of stratum water salt ions, the hydrophobic nano-silica is adsorbed on the surface of the rock, so that wetting conversion generates on the rock surface to produce hydrophobic slip effect and reduce flow resistance and injection pressure.

The invention provides a solvent thermal preparation method of a NiCo2O4 nano-material. The method comprises steps as follows: (1) Ni(NO3)2*6H2O, Co(NO3)2*6H2O and NaNO3 are added to polyethylene glycol 400 to be sufficiently dissolved, urea is added to the mixture for full dissolution, and a mixed solution is obtained; (2) the obtained mixed solution react in a reaction kettle at the constant temperature for a certain period of time under the condition of stirring, is washed and is dried, and a precursor is obtained; (3) the precursor is subjected to constant-temperature heat treatment in air, and the NiCo2O4 nano-material is obtained. According to the method, the polyethylene glycol 400 is used as a solvent, Ni(NO3)2*6H2O and Co(NO3)2*6H2O are used as reaction raw materials, the urea is used as a precipitating agent, NaNO3 is used as an aid, after the precursor is prepared with a solvent thermal method, the NiCo2O4 nano-material with the large specific surface area (68 m<2>/g) is prepared, the specific capacity is up to 2015 F/g, the preparation method is simple, the product cost is low, and the method is suitable for large-scale production.

The invention discloses a preparation method of three-dimensional ordered macroporous La1-xSrxCrO3 (x=0, 0.4) with a mesoporous pore wall. The preparation method comprises the following steps of: dissolving lanthanum nitrate and chromium nitrate in mixed liquid of polyethylene glycol 400 and absolute methanol in the molar ratio of 1:1 or dissolving lanthanum nitrate, strontium nitrate and chromium nitrate in mixed liquid of polyethylene glycol 400, absolute methanol and deionized water in the molar ratio of 0.6:0.4:1; adding citric acid in the molar ratio of 1:1 of chromium nitrate to citric acid; performing ultrasonic treatment; adding absolute methanol solution of P123 and performing ultrasonic treatment so as to form homogeneous solution; adjusting metal ion concentration to be 2.0 mol/L; and pouring a polymethyl methacrylate (PMMA) microsphere template into the solution, soaking, performing suction filtration, drying and baking the obtained substance in two steps. The La1-xSrxCrO3prepared by the preparation method has high degree of crystallization, controllable particle shape and pore size, readily available raw materials, high product stability, high electrical conductivityand good application prospect.

A freeze-dried powder injection of Duoxitasai is proportionally prepared from Duoxitasai and the auxiliary chosen from alcohol, tween-80, glycerin, Na2EDTA, propanediol, polyethanediol 400, mannitol and sodium pyrosulfite. Its preparing process is also disclosed.

The invention discloses a lanthanum calcium iron cobalt calcium titanium ore type catalyst for oxidizing and reforming ethanol and a method for preparing the catalyst. The chemical formula of the catalyst is La1-xCaxFe1-yCoyO3, wherein the x is in a range of 0.1 to 0.5, and the y is in a range of 0.1 to 0.5. The method for preparing the catalyst includes that corresponding metal salt is dissolved in deionized water according to a molar ratio of metal ions to be prepared into a salt solution, citric acids are added according to a molar ratio of the citric acids and the metal ions, citric acids and polyethylene glycol 400 are added in a salt solution according to a molar ratio of the citric acids and the polyethylene glycol, uniform complexes are obtained after stirring, and then the complexes are subjected to evaporation concentration, drying and calcining to obtain the lanthanum calcium iron cobalt calcium titanium ore type catalyst. The lanthanum calcium iron cobalt calcium titanium ore type catalyst for oxidizing and reforming ethanol and the method for preparing the catalyst have the advantages that the manufacture process is simple, and the obtained catalyst has good reactivity and high hydrogen selectivity, and excellent stability and anti-carbon deposition capabilities simultaneously.