11 results about "Ethoxybenzene" patented technology

The invention discloses zwitterionic concrete internal curing hydrogel based on humidity-pH dual responsiveness and a preparation method of the zwitterionic concrete internal curing hydrogel, and belongs to the technical field of building materials. The water-based cleaning agent is prepared from the following raw material components in percentage by weight: 6%-8% of N-vinyl imidazole, 8%-12% of 2-methylimidazole, 6%-8% of 2-acrylamido-2-methylpropanesulfonic acid, 2%-4% of sodium p-styrenesulfonate, 26%-30% of acrylic acid, 18%-21% of N-vinyl pyrrolidone, 15%-18% of glycidyl methacrylate, 2%-5% of nano montmorillonite powder, 0.05%-0.1% of divinyl benzene, 0.05%-0.15% of N, N-dimethylformamide and the balance of water. The invention discloses an anti-freezing agent which is prepared from the following components in percentage by weight: 0.1%-0.3% of N, N-methylene bisacrylamide, 0.1%-0.3% of 1-[4-(2-hydroxyethoxy)-phenyl]-2-hydroxy-2-methyl-1-propane-1-ketone, 0.5%-0.8% of ammonium persulfate and 0.5%-0.8% of sodium hydrogen sulfite. Double response to the internal humidity and pH value of the concrete can be achieved, and the requirement for precise internal curing of modern high-performance concrete is met.

This invention discloses a method for preparing a transparent polyurethane material with flame retardancy, high strength, and recyclability. The transparent polyurethane material is prepared by compounding isocyanate as the hard segment, polyether polyol as the soft segment, with 1,3-bis(2-hydroxyethoxy)benzene and a substituted flame retardant. The preparation method of this invention is simple and easy to control. The tensile strength of the prepared transparent polyurethane material can reach up to 41 MPa, meeting commercial application requirements. Its limiting oxygen index can reach 29, and its UL-94 rating reaches V-0, exhibiting excellent flame retardant properties. Furthermore, this polyurethane material is recyclable and can be reused simply by hot pressing, greatly reducing its application cost. It can be widely used in industries such as cables, pipes, and films.

The present application belongs to the technical field of analytical chemistry, and particularly relates to a detection method of ginsenoside components in Shenzhu tea. The graphene is covalently grafted and modified by 3-(4-ethoxyphenoxy)propyl trimethoxysilane, the prepared composite material is used as a solid-phase extraction filler, can effectively improve the removal rate of saccharides in the Shenzhu tea sample, the recovery rate of the standard addition and the detection precision, greatly prolongs the reusable number of the material, and can more accurately, stably and efficiently realize the enrichment and detection of ginsenosides in the Shenzhu tea.

The present invention relates to the technical field of waterproofing coil material, and provides a high-strength stainless steel waterproofing coil material and a method for manufacturing the same. [Solution] This high-strength stainless steel waterproof coil material is composed of, from bottom to top, a stainless steel material, a first adhesive layer, a waterproof layer, a second adhesive layer, and an isolation film. The raw materials of the first adhesive layer each contain the following components by weight: 80-90 parts butyl rubber, 10-30 parts polypropylene, 20-30 parts filler A, 12-18 parts adhesion promoter, 0.2-0.5 parts coupling agent, 8-12 parts softener, 1-2 parts tin chloride, 1-3 parts vulcanizing agent, and 2-3 parts accelerator. The adhesion promoter is made of polyurethane and o-ethoxyphenyl isocyanate, and the first adhesive layer and the second adhesive layer are made of the same raw materials. The above technical solution solves the problem of the prior art, which is that stainless steel waterproof coil material has low adhesive peel strength and a significant decrease in adhesive peel strength after immersion in water.

The invention relates to the technical field of nylon materials, and particularly discloses a waste plastic-based recyclable high-value utilization nylon material which comprises the following components in parts by weight: 50-70 parts of nylon, 10-20 parts of a flexibilizer, 1-3 parts of a chain extender, 1-2 parts of a lubricant, 0.3-1 part of an initiator and 0.5-2 parts of other auxiliaries. The chain extender is selected from one or more of pentaerythritol-tri (cyclohexane-4-formate)-single long-chain fatty acid ester and 1, 3-bis (2-maleimidoethoxy) benzene-furan terminated anhydride, and the chain extender is selected from one or more of pentaerythritol-tri (cyclohexane-4-formate)-single long-chain fatty acid ester and 1, 3-bis (2-maleimidoethoxy) benzene-furan terminated anhydride; furthermore, the weight ratio of the pentaerythritol-tri (cyclohexane-4-carboxylate)-single long-chain fatty acid ester to the 1, 3-bis (2-maleimidoethoxy) benzene-furan terminated anhydride is 1: (2.5-5.0), and the weight ratio of the pentaerythritol-tri (cyclohexane-4-carboxylate)-single long-chain fatty acid ester to the 1, 3-bis (2-maleimidoethoxy) benzene-furan terminated anhydride is 1: (2.5-5.0). After the nylon material is recycled for 6 times, the mechanical property of the nylon material can still reach 50% or above of the original mechanical property, and the nylon material has a recyclable high-value utilization prospect.

The invention relates to the technical field of pharmaceutical analysis, in particular to a method for detecting 2-ethyoxyl benzoyl chloride and related substances thereof, liquid chromatography is adopted for detection, and the related substances are salicylic acid, 2-ethyoxyl benzoic acid, 2-ethyoxyl methyl benzoate and 2-ethyoxyl ethyl benzoate. Chromatographic conditions comprise that octadecylsilane chemically bonded silica is used as a chromatographic column of a stationary phase; a gradient elution procedure is adopted, a mobile phase is composed of a mobile phase A and a mobile phase B, and one of water and a phosphoric acid solution is taken as the mobile phase A; one or more of acetonitrile and methanol are used as a mobile phase B; the elution gradient is 0-35 min, and the volume percentage content of the mobile phase A is 8-80%; 35-40 min, the volume percentage content of the mobile phase A is 8-15%; the volume percentage content of the mobile phase A is 8-80% in 40-41 min; the volume percentage content of the mobile phase A is 70-80% in 41-50 min. The detection method disclosed by the invention is simple and convenient to operate, the solvent is single and easy to obtain, and the method is exclusive and accurate and can be suitable for controlling the quality of the 2-ethoxybenzoyl chloride product.

The invention discloses fragrant printing ink and a preparation method thereof, the fragrant printing ink comprises a diluent, a diluent and fragrant powder, the diluent comprises an acrylate substance, acryloylmorpholine, 2-hydroxy-2-methyl-1-[4-(2-hydroxyethoxy) phenyl]-1-acetone and 2, 4, 6-trimethylbenzoyl-di (p-tolyl) phosphine oxide, the diluent comprises a diluent solvent, a diluent solvent and a solvent solvent, and the diluent solvent comprises a diluent solvent, a diluent solvent and a solvent solvent. The diluent comprises an acrylic ester substance, a printing ink adhesive, a phosphate ester substance and p-hydroxyanisole; the acrylic ester substances in the diluent comprise the acrylic ester substances in the diluent. According to the fragrant ink disclosed by the invention, the diluent and the diluent share an acrylate substance as a basic component, so that the two key assistants can be better fused in an ink system through the design, the rejection reaction among different components is reduced, the problems of layering, precipitation, uneven gloss and the like are avoided, and the overall stability of the ink is guaranteed; and meanwhile, the component debugging difficulty in the production process is also simplified.

The invention discloses a preparation method of a transparent polyurethane material with flame retardance, high strength and recoverability, and the transparent polyurethane material is prepared by compounding isocyanate as a hard segment and polyether polyol as a soft segment with 1, 3-bis (2-hydroxyethoxy) benzene and a substituted flame retardant. The preparation method is simple, the process is easy to control, the tensile strength of the prepared transparent polyurethane material can reach 41 MPa to the maximum, commercial application requirements are met, the limit oxygen index can reach 29, the UL-94 grade reaches the V-0 grade, and the transparent polyurethane material has a good flame retardant effect, has recoverability, can be repeatedly used only through hot pressing, and is low in cost. The application cost is greatly reduced, and the method can be widely applied to the industries of cables, pipes, films and the like.

The application discloses a preparation method of a photoresponsive acylhydrazone covalent organic framework and application of the photoresponsive acylhydrazone covalent organic framework in adsorption and separation of rare earth ions, and belongs to the technical field of environmental protection. 2,5-diethoxybenzene-1,4-bis(formylhydrazine) and trialkyl aldehyde are reacted through a Schiff base reaction to prepare an acylhydrazone covalent organic framework; the acylhydrazone covalent organic framework takes an acylhydrazone functional group with photoresponsive performance as a connecting unit, the acylhydrazone functional group of the acylhydrazone covalent organic framework is subjected to E-Z isomerization under the action of 365 nm ultraviolet light, and the photoresponsive acylhydrazone covalent organic framework after the action of ultraviolet light can be used for efficient adsorption and separation of rare earth ions. The photoresponsive acylhydrazone covalent organic framework prepared by the method has simple preparation, high crystallinity, superior photoresponsive isomerization performance, and superior adsorption and separation performance for rare earth ions, and can be used as an efficient adsorbent for low-concentration rare earth tail water.

The invention discloses a method for degrading 4-(trans, trans-4-propyl dicyclohexyl)-2, 3-difluoroethoxy benzene by adopting bacillus subtilis FZ-1 and application of the method, and belongs to the technical field of biological treatment of environmental organic pollutants, and particularly relates to a method for degrading 4-(trans, trans-4-propyl dicyclohexyl)-2, 3-difluoroethoxy benzene by adopting bacillus subtilis FZ-1 and application of the 4-(trans, trans-4-propyl dicyclohexyl)-2, 3-difluoroethoxy benzene. The method comprises the following specific steps: adding bacillus subtilis FZ-1 into a degradation culture medium containing 4-(trans, trans-4-propyldicyclohexyl)-2, 3-difluoroethoxy benzene, carrying out a constant-temperature oscillatory reaction at 35 DEG C, and determining the content of 4-(trans, trans-4-propyldicyclohexyl)-2, 3-difluoroethoxy benzene in the culture medium by adopting a gas chromatograph-tandem mass spectrometer, so that the content of 4-(trans, trans-4-propyldicyclohexyl)-2, 3-difluoroethoxy benzene in the degradation culture medium is determined, and the content of 4-(trans, trans-4-propyldicyclohexyl)-2, 3-difluoroethoxy benzene in the degradation culture medium is determined. The residual concentration of the 2, 3-difluoroethoxy benzene is calculated according to the residual concentration of the 2, 3-difluoroethoxy benzene, and the degradation effect of the bacillus subtilis FZ-1 on the pollutant is analyzed according to the residual concentration of the 2, 3-difluoroethoxy benzene. The method is high in environmental adaptability and low in cost, the degradation rate of 4-(trans, trans-4-propyl dicyclohexyl)-2, 3-difluoroethoxy benzene with the initial concentration of 1.0 mg / L can reach 65.3% after degradation is conducted for 6 days, and an effective method is provided for degradation of pollutants in the environment.

This invention provides a method for detecting the diethyl sulfate content in methyl 4-acetamido-2-ethoxybenzoate. The method involves derivatizing the sample with sodium iodide-ascorbic acid and detecting the sample using a headspace gas chromatograph equipped with an ECD detector. The chromatographic column is an Agilent DB-624 30m × 0.53mm × 3μm column, the injection port temperature is 220℃, the detector temperature is 250℃, and the carrier gas is N2. 2， Flow rate: 1.5 mL / min, temperature programmed: initial column temperature 70℃, increased to 150℃ at a rate of 5℃ / min and held for 0 min; then run at 240℃ and held for 5 min, flow rate 3 mL / min. This invention provides a convenient, efficient, and accurate method for detecting the diethyl sulfate content in methyl 4-acetamido-2-ethoxybenzoate. This method uses gas chromatography to detect the diethyl sulfate content in methyl 4-acetamido-2-ethoxybenzoate, thereby effectively ensuring medication safety.