27 results about "Benzyl ether" patented technology

The application discloses a near-infrared distinguishing and iron-apoptosis-enhancing functional fluorescent probe and a preparation method and application thereof. The structural formula of the near-infrared distinguishing and iron-apoptosis-enhancing functional fluorescent probe is as follows: firstly, the traditional boronic acid ether trigger unit is improved to be a cyclic diboronic acid ester, N-methyl imidodicarboxylic acid is introduced above the phenylboronic acid to improve the response threshold, and the benzyl ether structure is abandoned and replaced by a phenyl ether structure, which also plays a role in further increasing the oxidation threshold; secondly, the response threshold is adjusted, and in combination with the strong coordination function of the released Fe(III), the cancer environment selectively triggers and releases the functional probe for iron-apoptosis enhancement. The probe disclosed by the application increases the difference in the reaction threshold between the cancer cell environment and the normal cell environment, and through twice adjustment, the fluorescence trigger difference is increased, the iron-apoptosis intermediate is released at the same time of fluorescence triggering, the cancer cells are caused to undergo iron-apoptosis, and the probe is applied to the detection of tumor cells.

The invention relates to the technical field of functional resin, and particularly discloses an acrylic resin coated organic silicon elastomer PA (at) SE prepared through aqueous phase suspension emulsion polymerization and a preparation method and application of the acrylic resin coated organic silicon elastomer PA (at) SE. An inner core of the PA (at) SE is a polyorganosiloxane elastomer ViSE formed by hydrosilylation addition reaction of hydrogen-containing polysiloxane, ethylene polysiloxane and a third functional component, and the third functional component comprises vinyl acetate, allyl acetate, allyl phenyl ether, allyl benzyl ether, cyclohexyl vinyl ether, alpha-C8-18 olefin, 1, 6-hexadiene, 1, 2-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol, 1, 3-propylene glycol and 1, 3-propylene glycol. The additive is one or a mixture of more of 1, 9-decadiene, (poly) ethylene glycol diallyl ether and (poly) propylene glycol diallyl ether. The acrylic resin coated organosilicon elastomer PA (at) SE provided by the invention can be mutually soluble with PC resin and the like, and can also realize toughening and reinforcing effects when being applied to materials such as PC resin and the like.

The application discloses a trifluoromethyl benzyl ether substituted amino acid derivative, a preparation method and application thereof, and belongs to the technical field of organic compound synthesis and medicine. The synthesis method of the trifluoromethyl benzyl ether substituted amino acid derivative is obtained through two-step reaction, that is, first, a photo extension reaction is carried out between a benzyl alcohol compound and hydroxynaphthaldehyde (or hydroxybenzaldehyde), then a Schiff base is formed after an amino acid ester hydrochloride, and then the Schiff base is reduced by sodium cyanoborohydride, and then simple hydrolysis is carried out to obtain the trifluoromethyl benzyl ether substituted amino acid derivative. The preparation method has the characteristics of simple steps, mild reaction conditions and fast reaction, and meets the requirements of green chemistry. The compound prepared according to the method can selectively adjust S1P1 receptors without exciting S1P3 receptors, and is expected to be developed into a new preparation for treating idiopathic pulmonary fibrosis.

This invention provides a photosensitive diamine monomer, a photosensitive polyimide precursor containing the monomer, a method for preparing thin film materials using the photosensitive polyimide precursor, and the application of this material in patterned hydrophilic surfaces and humidity sensor substrates. The photosensitive diamine monomer has a triphenyldiamine backbone, and its side chain contains o-nitrobenzyl ether photosensitive groups. When polyamic acid or polyimide materials prepared from this diamine monomer are irradiated with ultraviolet light, the o-nitrobenzyl ether groups in the side chain undergo a photolysis reaction to generate o-nitrosobenzaldehyde and release phenolic hydroxyl groups. The phenolic hydroxyl groups are covalently fixed on the polymer backbone, which significantly improves the hydrophilicity of the irradiated area. This material can be used to prepare patterned hydrophilic surfaces and has potential application prospects in fields such as the integrated design of humidity sensor substrates and humidity-sensitive materials.

The present invention discloses a simple method for preparing benzyl ether using benzyl halide as a raw material in the presence of samarium metal, a small amount of iodine, and paraformaldehyde in N,N-dimethylacetamide. The benzyl halide and paraformaldehyde are added to the N,N-dimethylacetamide under stirring, followed by the addition of samarium metal powder and iodine. The reaction system is carried out under anhydrous conditions. Stirring is performed at 80°C until the reaction is complete. The resulting reaction mixture is subjected to solvent recovery. The crude product is separated and purified by column chromatography to obtain the benzyl ether in a yield of 60-90%.

The application discloses a preparation method of a polysubstituted benzyl ether, which comprises the following steps: dissolving a compound III in a polar protic solvent, adding a base, and reacting under the action of an oxidant at a temperature of 15-100 DEG C for 1-48 h to obtain a compound I; the preparation method of the polysubstituted benzyl ether is a green synthesis method, the reaction condition is warm and environment-friendly, the alcohol used can be recycled, the use of expensive metal catalysts is avoided, the cost is low, the reaction steps are few, the yield is high, the discharge of three wastes is reduced, and there is no metal residue, so the method is suitable for industrialized production.

The present application relates to the technical field of functional resin, aiming at the problem that the existing polyorganosiloxane and PC resin are prone to phase separation, and the mechanical properties of the toughened modified PC resin material are obviously reduced, the present application discloses a kind of phenylpropene resin coated organic silicon elastomer SA@SE and its preparation method and application, the SA@SE has shell-core structure, the shell of the SA@SE is linear structure or slightly crosslinked phenylpropene resin, the core of the SA@SE is the polyorganosiloxane elastomer formed by hydrogen-containing polysiloxane, ethylene polysiloxane and third functional component through silicon hydrogenation addition reaction, and the third functional component is selected from styrene, allyl phenyl ether, allyl benzyl ether, cyclohexyl vinyl ether and the like.The SA@SE of the present application is a copolymer grafted and bonded between the inner and outer core-shell through covalent bond, which can realize the mutual solubility with bisphenol A type PC resin and the like, avoid phase separation and delamination, and improve the toughening and impact resistance of the modified PC resin.

The invention relates to the technical field of functional resin, and discloses a styrene-acrylic resin coated organosilicon elastomer SA (at) SE and a preparation method and application thereof in order to solve the problems that existing polysiloxane and PC resin are prone to phase separation, and consequently the mechanical performance of a toughening modified PC resin material is obviously reduced. A shell layer of the SA (at) SE is styrene-acrylic resin of a linear structure or lightly crosslinked, an inner core of the SA (at) SE is a polysiloxane elastomer formed by hydrosilylation addition reaction of hydrogen-containing polysiloxane, ethylene polysiloxane and a third functional component, and the third functional component is selected from styrene, allyl phenyl ether, allyl benzyl ether, cyclohexyl vinyl ether and the like. The SA-SE is a copolymer formed by grafting and bonding an inner core shell and an outer core shell through covalent bonds, mutual dissolution of the SA-SE with bisphenol A type PC resin and the like can be achieved, phase separation and layering are avoided, and the performance effects of toughening, impact resistance and the like of the modified PC resin can be improved.

The present application relates to the chemical industry field, especially to a method for recovering antioxidant 702 from 3,5-di-tert-butyl-4-hydroxybenzyl methyl ether still residue, the method comprising: dissolving the 3,5-benzyl ether still residue in a solvent, converting 3,5-di-tert-butyl-4-hydroxybenzyl methyl ether in the still residue into antioxidant 702 through acid catalysis reaction, after the reaction is completed, neutralizing and washing with water, further carrying out desolventizing, purifying, temperature reducing crystallization, drying and the like to obtain antioxidant 702. The present application can recover by-product antioxidant 702 from 3,5-di-tert-butyl-4-hydroxybenzyl methyl ether still residue, which can not only reduce production cost, save resources, but also reduce waste discharge, protect the environment, and realize economic benefit and environmental benefit.

The invention discloses a benzyl ether and phenyl ether substituted alpha-methylene-gamma-butyrolactone compound as well as a preparation method and application of the benzyl ether and phenyl ether substituted alpha-methylene-gamma-butyrolactone compound. According to the invention, benzyl ether and phenyl ether groups containing different substituents are introduced into the gamma site of alpha-methylene-gamma-butyrolactone, so that a compound with a novel structure is obtained; the structure of the compound is shown as a formula I. The compound disclosed by the invention has broad-spectrum bactericidal activity, and particularly has an obvious inhibition effect on rhizoctonia solani, valsa mali, botrytis cinerea, gaeumania graminis, fusarium graminearum, Colletotrichum orbiculare and Phytophthora capsici, so that the compound disclosed by the invention has the advantages that the compound can be used for preparing medicines for preventing and treating diseases, and the compound can be used for preparing medicines for preventing and treating the diseases caused by the diseases such as the diseases caused by the diseases caused by the diseases caused by the diseases caused by the diseases caused by the diseases caused by the diseases caused by the diseases caused by the diseases caused by the diseases caused by the diseases caused by the diseases caused by the diseases caused by the diseases caused by the diseases caused by the diseases. The compound can be used as a bactericide for preventing and treating agricultural diseases.

The application discloses a preparation method of pyraclostrobin and belongs to the technical field of pesticide synthesis. In order to solve the problems of low bromine atom utilization rate and generation of more low-concentration acid-containing wastewater in the production process of pyraclostrobin, the method is provided, which uses sodium bromide as a bromine source, controls the rate of the conversion of the sodium bromide aqueous solution into bromine and sodium chloride, and then realizes bromination in situ. After the reaction is completed, a series of post-treatments are performed to obtain o-nitrobenzyl bromide. Then, etherification and purification treatments are performed to obtain pyrazole benzyl ether (an important intermediate). Finally, reduction, acylation and methylation are performed by using mature technology, and pyraclostrobin is obtained. The sodium bromide can be directly purchased or recycled by simple recovery treatment of the waste liquid formed by the process and directly reused in the process. The method not only provides a new synthesis route for the preparation of pyraclostrobin, but also reduces the raw material cost and improves the bromine atom utilization rate under the premise of realizing the preparation of pyraclostrobin.

The application relates to an anti-aging BOPP matt film and a preparation method thereof, and belongs to the technical field of matt films. The anti-aging BOPP matt film comprises a matt layer, a core layer and a smooth layer arranged in sequence; the matt layer comprises random copolymerized polypropylene, 40-45 wt% high-density polyethylene, 2-4 wt% ethylene-2-allyl benzyl ether random copolymer A and 0.1-0.5 wt% antioxidant; and the core layer comprises homopolymerized polypropylene, 5-8 wt% ethylene-2-allyl phenol random copolymer and 0.05-0.1 wt% auxiliary antioxidant. The anti-aging BOPP matt film can effectively prolong the service life of the BOPP matt film, improve the yellowing problem in aging, and improve the weather resistance and the aesthetic degree of the film product through the synergistic design of the matt layer and the core layer.

The application discloses a kind of hyperbranched polymer paraffin inhibitor and preparation method thereof, belong to the technical field of oil exploitation its technical scheme is: long chain acrylic ester monomer, maleic anhydride, 4-allyl benzyl ether and short chain ester monomer, branched monomer are dissolved in dimethylbenzene, 0.1~1% initiator benzoyl peroxide is added, under the condition of 70~90 ℃, it is obtained hyperbranched polymer paraffin inhibitor that stirring reaction 4~8 hours.The paraffin inhibitor of the application has hyperbranched structure, can destroy the crystal structure of wax crystal, is favorable to change the surface morphology of wax crystal, and weaken the interaction between wax crystal that precipitates, hinder the trend that wax crystal body crosslink forms continuous three-dimensional network structure, effectively prevent wax crystal precipitation deposition, and improve the rheological property of waxy crude oil, with good paraffin resistance.

This invention relates to the fields of radiopharmaceutical chemistry and clinical nuclear medicine, specifically to an aryl benzyl ether compound with high affinity for monoamine oxidase B (MAO-B) and its applications. This aryl benzyl ether compound has the structure of general formula (I). After radiolabeling, this compound and its derivatives can be used to image MAO-B in the brain, serving as molecular probes for direct targeting of MAO-B and potential surrogate markers for reactive astrocytes.

The invention relates to the technical field of PET polyester, in particular to an MOF catalyst for synthesizing PET and a preparation method of the MOF catalyst, the molecular expression is Sb-SBME-UiO-66, and SBME is thiobenzyl ether. The preparation method comprises the following steps: dispersing zinc tetrachloride and terephthalic acid into a first mixed solution of N-N dimethyl amide and ethylene glycol for reaction, and centrifuging after the reaction to obtain a white precipitate; the white precipitate is washed, and a UiO-66 matrix is obtained; the preparation method comprises the following steps: mixing ethylene glycol antimony and thiobenzyl methyl ether in ethylene glycol, reacting, and centrifuging to obtain an antimony precursor; and mixing and dispersing the UiO-66 matrix and the antimony precursor in a second mixed solution of N-N dimethylformamide and ethylene glycol, stirring to activate the UiO-66 matrix and the antimony precursor, heating, and continuously reacting to obtain the MOF catalyst. The MOF catalyst for synthesizing PET and the preparation method of the MOF catalyst aim at solving the problem that a catalyst for synthesizing PET is poor in catalytic activity and thermal stability.

The application relates to the technical field of functional resin, and particularly discloses an acrylic resin coated silicone elastomer PA@SE prepared through aqueous phase suspension emulsion polymerization as well as a preparation method and application thereof. The PA@SE has a core-shell structure, the shell layer is linear acrylic resin or slightly crosslinked acrylic resin, the inner core of the PA@SE is polyorganosiloxane elastomer ViSE formed through a silicon-hydrogenation addition reaction of hydrogen-containing polysiloxane, ethylene polysiloxane and a third functional component, and the third functional component includes vinyl acetate, allyl acetate, allyl phenyl ether, allyl benzyl ether, cyclohexyl vinyl ether, alpha-C 8‑18 Olefins, 1,6-hexadiene, 1,9-decadiene, (poly)ethylene glycol diallyl ether, (poly)propylene glycol diallyl ether, or a mixture of one or more thereof. The acrylic resin coated silicone elastomer PA@SE provided by the application can not only be mutually soluble with PC resin and the like, but also can realize toughening and reinforcing effects in PC resin and the like.

This invention discloses a flash etching cleaning solution for IC substrates, its preparation method, and its application method, relating to the field of IC substrate flash etching technology. The cleaning solution comprises the following components in the indicated mass concentrations: 0.5-3.5% cleaning agent, 0.5-2.5% complexing agent, 0.5-2.5% colloidal dispersant, 0.5-2.5% corrosion inhibitor, 0.5-2.5% wetting agent, with the balance being water. The cleaning agent is an ammonium fluoroborate compound, the complexing agent is a benzyl ether compound, the colloidal dispersant is a piperidine carboxylic acid compound, the corrosion inhibitor is a tin alkyl pyridine compound, and the wetting agent is a fluoroester compound. This invention provides an IC substrate flash etching cleaning solution that features highly efficient impurity removal, zero equipment corrosion, and environmental friendliness, making it suitable for the cleaning process of IC substrate flash etching.

The application provides a synthesis method of alogentan, and belongs to the technical field of heterocyclic compounds. Bromophenyldichloropyrimidine is used as a raw material, nucleophilic substitution is carried out between bromophenyldichloropyrimidine and excessive sulfonamide to prepare sulfanilamide, then the amino group is protected by using chloromethyl benzyl ether to form a sulfanilamide protector, the sulfanilamide protector is reacted with ethylene glycol under the condition of high temperature and strong base to form hydroxyethyl pyrimidine, the hydroxyethyl pyrimidine is reacted with 5-bromo-2-chloropyrimidine to form alogentan protector, and the chloromethyl benzyl protective group of the alogentan protector is hydrolyzed in acid to prepare alogentan. The application not only solves the problems of reactivity and selectivity of sulfonamide and pyrimidine ring, and the whole reaction process is simple, safe and high in product purity.

The application provides a platable polypropylene composite material. The platable polypropylene composite material comprises the following components in parts by weight: 40-60 parts of polypropylene, 30-50 parts of talcum powder, 3-8 parts of polyethylene glycol star polymer, 1-5 parts of lubricant, and 0.1-1 parts of antioxidant. The main chain of the polyethylene glycol star polymer is a copolymer chain formed by benzyl ether with one vinyl group on each benzene ring, and the branch chain is a chain formed by the reaction of aldehyde groups on the benzene ring with polyethylene glycol. The D50 particle size of the talcum powder is 1-5 microns. The weight average molecular weight of the polyethylene glycol star polymer is 10000-30000. By adding the polyethylene glycol star polymer with a specific structure and the small particle size talcum powder, the polypropylene composite material has high rigidity and excellent plating effect, meets the application requirements, and the shrinkage rate of the polypropylene composite material is close to that of ABS material, so that the polypropylene composite material can directly replace the ABS material without updating the mold, and has a good production application prospect.

The invention relates to myristoyl pentapeptide-17 and a preparation method and application thereof.According to the myristoyl pentapeptide-17, low-toxicity and biodegradable NFM and anisole are compounded according to the volume ratio of 1: 1, and the myristoyl pentapeptide-17 has strong polarity and moderate hydrophobicity and can completely replace DMF. According to the mixed solvent, the solubility of Fmoc amino acid monomers, activating reagents and resin is improved, the risk of reproductive toxicity is avoided, and the volatility is reduced compared with that of DMF (Dimethyl Formamide); the process is synergistically enhanced, namely, the mass transfer limitation of the traditional batch-type reaction is overcome through the synergism of the laminar shear effect and the ultrasonic cavitation effect of a continuous flow reaction device, so that the coupling reaction time of the myristoyl pentapeptide-17 is shortened, the occurrence rate of side reaction is reduced, and the universality verifies that the solvent system has excellent performance in the synthesis of the myristoyl pentapeptide-17, and has a wide application prospect in the synthesis of the myristoyl pentapeptide-17. And the coupling efficiency is stable.

The invention discloses a self-flame-retardant alkylene resin, the structural formula of the self-flame-retardant alkylene resin is shown in the specification, and in the structural formula, R1 is selected from aryl or aralkyl; r2 is selected from aryl or aralkyl; r1, R2, R3 are independently selected from unsaturated alkylene ether, unsaturated benzyl ether or unsaturated alkylene ester; the self-flame-retardant alkylene resin has the characteristics of high frequency, high speed, low dielectric loss, ultrahigh Tg, high heat resistance and phosphorus-containing self flame retardance, and can meet the high-frequency and high-speed use requirements of electronic products.

The invention provides a photosensitive molecule containing o-nitrobenzyl ether and diazo naphthoquinone double photosensitive groups, a photoresist composition, a photosensitive molecule preparation method, a photoresist preparation method and a photoetching method, and relates to the technical field of photoresists. The photosensitive molecule containing the o-nitrobenzyl ether and diazo naphthoquinone double photosensitive groups has a structural general formula shown in a formula I, wherein the formula I is shown in the description; wherein A is molecular glass or a polymer containing a phenolic hydroxyl group, Ra is an o-nitrobenzyl group, and Rb is a diazonaphthoquinone group.

The application discloses a trifluoromethyl cyclohexyl benzyl ether substituted nitrogen-containing organic acid derivative, a preparation method and application thereof, and belongs to the technical field of organic compound synthesis and medicine. The synthesis method of the trifluoromethyl cyclohexyl benzyl ether substituted nitrogen-containing organic acid derivative is obtained through two-step reaction, that is, first, a light extension reaction is carried out on a benzyl alcohol compound and hydroxynaphthaldehyde (or hydroxybenzaldehyde), then a Schiff base is generated after the amino acid ester hydrochloride (or amino sulfonic acid, or amino phosphoric acid) is reacted with the benzyl alcohol compound, and sodium cyanoborohydride is used for reduction (or simple hydrolysis is carried out after reduction), so the trifluoromethyl cyclohexyl benzyl ether substituted nitrogen-containing organic acid derivative is obtained. The preparation method has the characteristics of simple steps, mild reaction conditions and fast reaction, and meets the requirements of green chemistry. The compound prepared according to the method can selectively adjust S1P1 receptors without exciting S1P3 receptors, and is expected to be developed into a new preparation for treating inflammatory and immune related diseases such as pulmonary fibrosis, ulcerative colitis and multiple sclerosis.

The invention provides a preparation method of iso-octyl p-methoxycinnamate, which comprises the following steps: uniformly mixing a catalyst, anhydrous carbonate and p-haloanisole to obtain a mixture; 2-ethylhexyl acrylate is slowly added into the heated mixture for a coupling reaction to obtain a reaction solution, and the reaction solution is filtered to obtain a filter cake and a filtrate; sequentially carrying out first negative pressure distillation and second negative pressure distillation on the filtrate; wherein the molar ratio of p-haloanisole to 2-ethylhexyl acrylate is greater than or equal to 3, and the molar ratio of anhydrous carbonate to 2-ethylhexyl acrylate is greater than or equal to 1. The haloanisole is used as a reactant and a solvent, and the reaction is carried out in an alkaline environment provided by anhydrous carbonate, so that the purity and yield of the product are remarkably improved, and compared with the existing reaction, the reaction temperature can be remarkably reduced, the energy is saved, and the production cost is reduced. Other impurities introduced due to decomposition or side reaction caused by high temperature are greatly reduced, and the purity of the product is further ensured.

The application discloses a method for synthesizing benzyl ether compounds by electro-oxidation alkoxylation, and belongs to the technical field of chemical synthesis. The method comprises the following steps: adding a phenol reactant into a mixed solution containing alkali, electrolyte and alcohol solvent, passing current, and generating an electrochemical reaction to obtain benzyl ether compounds. The method does not need chemical oxidants and transition metal catalysts, and is energy-saving and economical. The raw materials used in the reaction are cheap and easy to obtain, and the cost is low. The alkoxylation of the phenol reactant can be directly realized. Compared with the prior art, the method is more green and mild.

The invention discloses a high-performance copolyester elastomer and a preparation method thereof, and belongs to the technical field of copolyester elastomers. The high-performance copolyester elastomer prepared by the invention is prepared from the following raw material components in parts by mass: 60-70 parts of a butylene terephthalate copolymer, 2-4 parts of a flame retardant A, 1-3 parts of a flame retardant B, 30-40 parts of a toughening agent and 0.5-1 part of a compatilizer, wherein the butylene terephthalate copolymer is obtained by reacting and copolymerizing dimethyl terephthalate, dimethyl 2, 5-furandicarboxylate, dimethyl itaconate, dimethyl succinate and butylene glycol and then reacting and terminating with methyl 4-amino-3-nitrobenzoate; the flame retardant A is obtained by reacting cyanuric chloride and 4-benzyloxyaniline and then removing benzyl ether; the flame retardant B is obtained by reacting N-(4-hydroxyphenyl) maleimide with phenyl dichlorophosphate; the high-performance copolyester elastomer prepared by the preparation method disclosed by the invention is relatively good in mechanical property and flame retardance.

The present invention describes a multi-component polyurethane foam composition comprising: (i) a first component, comprising one or more phenolic resins of the benzyl ether type, wherein a) the first component comprises free phenol and free hydroxybenzyl alcohol, wherein at least about 1.2 parts by weight of free hydroxybenzyl alcohol per 1 part by weight of free phenol are comprised in the first component; and / or b) the first component comprises free phenol and free saligenin (o-hydroxybenzyl alcohol), wherein at least about 1.1 parts by weight of free saligenin (o-hydroxybenzyl alcohol) per 1 part by weight of free phenol are comprised in the first component; (ii) a second component, comprising an isocyanate formulation consisting of one or more isocyanate compounds, wherein at least one isocyanate compound has at least 2 isocyanate groups per molecule; and (iii) optionally, a third component, comprising one or more (halogen)hydrocarbon- containing blowing agents and / or water, wherein, if the multi-component polyurethane foam composition does not include a third component, then the first component comprises at least 0.95% by weight, preferably at least 1.0% by weight, and especially preferably at least 2.0% by weight of water.