125 results about "Propyl ether" patented technology

The invention discloses a flame-retardant cable and a preparation method thereof. The cable comprises conductor wire cores, a fireproof layer, an insulating layer, a shielding layer, a filling layer and a sheath layer from inside to outside. According to the cable sheath layer, 100 parts of high density polyethylene (HDPE), 5-15 parts of ethylene-vinyl acetate rubber and 3-10 parts of fluororubber are used as main materials, triallyl isocyanurate and bisphenol A diallyl ether are introduced for synergistic crosslinking, and nano montmorillonite is used as an auxiliary material, so that a compact interpenetrating network is constructed. The tensile strength of the sheath layer composite material is greater than or equal to 26.5 MPa, the elongation at break is greater than or equal to 387%, the performance retention rate is greater than 92% after the sheath layer composite material is soaked in slurry for 28 days, the limit oxygen index is greater than 38%, the water vapor transmission coefficient is less than or equal to 1.5 * 10 <-4 > g.mm / (m < 2 >. D.Pa), and the sheath layer composite material has excellent flame retardance, barrier property and slurry resistance and is suitable for harsh outdoor environments such as rail transit.

A geopolymer precursor includes an alkaline reactive solid material containing aluminum, silicon, and oxygen, and a fluid loss control material having an ionic stability property that has a first value in water and a second value in a 3M solution of NaOH, wherein a ratio of the second value to the first value is in a range of 0.5 to 2.0. The fluid loss control material may be, or may include a crosslinked polymer, which may include a reaction product of one or more of acrylamide, 2-acrylamido-2-methyl propane sulfonic acid, N,N‑dimethylacrylamide, N,N‑diethylacrylamide, vinyl acetate, or another monomer, and a crosslinker including one or more of methylene bisacrylamide, triallyl amine, pentaerythritol allyl ether, triallyl-triazine-trione, or another material. The geopolymer precursor may include an activator, an alkaline solution having pH of at least about 9, or both.

The invention relates to the technical field of petroleum drilling fluid loss reduction, and discloses an anti-divalent salt fluid loss agent for drilling fluid, which is prepared by the following steps: step 1, beta-cyclohexylamine and 6-chloro-1-hexene are subjected to a reaction to obtain alkenyl beta-cyclohexylamine; step 2, initiating polymerization of alkenyl beta-cyclopentadiene, a hyperbranched monomer pentaerythritol triallyl ether and 2-acrylamide-2-methylpropanesulfonic acid under the action of azobis (isobutylamidine hydrochloride), so as to obtain an intermediate A; 3, 3-dimethylamino-1-propylamine and palmitic acid are subjected to a reaction, and an intermediate 2 is obtained; 4, the intermediate 2 and benzyl chloride are subjected to a reaction, and quaternary ammonium salt modified fatty acid is obtained; and 5, stirring and mixing the intermediate A, quaternary ammonium salt modified fatty acid and coupling agent modified walnut powder to obtain the divalent salt resistant filtrate reducer for the drilling fluid. The anti-divalent salt filtrate reducer for the drilling fluid has a relatively good anti-divalent salt effect.

The invention provides a preparation method of photocatalytic hydrogel, belongs to the technical field of photocatalysis, and aims at solving the problems that traditional hydrogen production is high in energy consumption and pollution, and existing photocatalytic hydrogel is low in purity and unstable in performance. The method comprises the following steps: firstly, preparing seven precursors of CPDT-1, CPDT-2Br-SO3Na, PCT-SO3Na, Flu-2Br-SO3Na, PFT-SO3Na, PCBT-SO3Na and PFBT-SO3Na step by step, and carrying out nitrogen purging to prevent oxidation, acetone precipitation, recrystallization and Soxhlet extraction and purification in the process; the four active precursors are mixed with acrylic acid, pentaerythritol triallyl ether and (2, 4, 6-trimethylbenzoyl) diphenyl phosphine oxide respectively, the mixture is subjected to 365nm ultraviolet irradiation polymerization, and four photocatalytic hydrogels are prepared. The method has the advantages of mild conditions, controllable operation, high product purity and stable photocatalytic performance, and is suitable for hydrogen energy preparation and water pollution treatment.

The invention discloses a preparation method of sulfide solid electrolyte slurry, a preparation method of a positive plate, an all-solid-state battery and a preparation method of the all-solid-state battery. The method comprises the following steps: preparing modified perfluoropolyether oil by taking perfluoropolyether carboxylic acid as a raw material, and mixing the modified perfluoropolyether oil with lithium salt, a suspension stabilizing additive and sulfide electrolyte to prepare the slurry. The modified perfluoropolyether oil adopts asymmetric end group design, one end is an epoxypropyl ether group, and the other end is a cyano group. The modified perfluoropolyether oil is introduced as a protective medium and an ionic conduction enhancer of the sulfide electrolyte, so that the problems of air stability, space charge layer and high-voltage operation of the sulfide electrolyte are solved, the process is simple, the cost is low, and the method has a good industrial application prospect. According to the all-solid-state battery disclosed by the invention, the gel-state ion conduction layer is formed between the positive plate and the electrolyte layer, and the gel-state ion conduction layer has high viscoelasticity and can keep good solid-solid interface contact under a relatively low external pressure condition.

The invention provides a lithium metal battery and a manufacturing method thereof, an energy storage system and electric equipment, which are beneficial to improving the performance of the lithium metal battery. The method comprises the following steps: providing a positive plate, a negative current collector and a diaphragm; winding or laminating the positive plate, the negative current collector and the diaphragm, and putting into a shell to form an initial battery cell; a first electrolyte is injected into the initial battery cell, the first electrolyte comprises a lithium salt, lithium nitrate and a solvent, the solvent at least contains 70 wt% or above of a short-chain ether solvent, and the number of carbon atoms of the short-chain ether solvent is smaller than or equal to 6; performing a first formation process on the initial battery cell; a second electrolyte is injected into the initial battery cell in a pulse type liquid injection mode, the second electrolyte comprises a lithium salt, 1, 1, 2, 2-tetrafluoroethyl-2, 2, 3, 3-tetrafluoropropyl ether and a solvent, and the molar concentration of the lithium salt in the second electrolyte is larger than that of the lithium salt in the first electrolyte; and performing a second formation process on the initial battery cell to form the lithium metal battery.

To provide a novel tetracycline derivative having reduced antimicrobial activity for use in treating disorders of the central nervous system.SOLUTION: Provided are novel molecules comprising a modified tetracycline molecule including Deamino Diacetyl Minocycline, Methyl Ether Minocycline, Ethyl Ether Minocycline, Propyl Ether Minocycline, Butyl Ether Minocycline, Butyl Ether Monoacetyl Minocycline, Butyl Ether Diacetyl Minocycline, Butyl Ether Triacetyl Minocycline, or Butyl Ether Tetra Acetyl Minocycline, pharmaceutically acceptable salts, pro-drugs, biologically active metabolites, and tautomers thereof, and methods for using the same to treat Alcohol Use Disorder (AUD), Substance Use Disorder (SUD), tobacco use, pain, or proinflammatory disorders.SELECTED DRAWING: None

The invention provides a low-migration organic silicon plasticizer as well as a preparation method and application thereof, and belongs to the field of chemical synthesis. The low-migration plasticizer is prepared by taking the hydrogen-containing silicone oil as a raw material and reacting the hydrogen-containing silicone oil with the allyl ether under the action of the catalyst, the specific structure can be adjusted according to different high polymer materials, and on the basis of the prepared plasticizer, the structure has great flexibility, so that the low-migration plasticizer can be used for preparing the high-migration plasticizer. Adjustment can be carried out according to needs. The raw materials are safe and non-toxic, the biocompatibility is good, the reaction condition is mild, the yield is close to 100%, waste materials and waste gas are not generated in the production process, energy conservation and environmental protection are achieved, the plasticizer is stable in performance, migration is not generated in plastic products, and the plasticizer can be used for safe toys, food packaging and the like.

The application discloses a preparation method of a fast-wetting salt-resistant polyacrylic acid resin, which comprises the following steps: (1) preparing an initiator solution: dissolving an initiator in a solvent to obtain a solution system A, wherein the initiator is selected from azobisisobutyronitrile or azobisisoheptyl nitrile; (2) preparing a monomer system: mixing monomer acrylic acid, allyl triethoxysilane, maleic anhydride and a crosslinking agent pentaerythritol triallyl ether to obtain a monomer system B; and (3) obtaining the fast-wetting salt-resistant polyacrylic acid resin through reaction: under the atmosphere of an inert gas and at a heating temperature, the solution system A and the monomer system B are simultaneously added into an emulsifier solution drop by drop, and then the reaction is carried out under heat preservation. The method is simple in process, and the obtained polyacrylic acid resin has the advantages of fast wetting, good salt resistance, excellent light transmittance and viscosity in a salt environment and the like.

The invention relates to the field of heat-conducting silicone grease, and discloses low-thermal-resistance heat-conducting silicone grease and a preparation method thereof. The heat-conducting silicone grease with low thermal resistance is prepared from the following raw materials in parts by weight: 100 to 120 parts of silicone oil polymer, 135 to 150 parts of heat-conducting filler, 4 to 6.5 parts of methylcyclosiloxane, 2 to 4 parts of alkyl alkoxy silane and 0.2 to 0.4 part of lubricating additive, the silicone oil polymer is prepared from trimethyl trivinyl cyclotrisiloxane, vinyl terminated polydiphenyl siloxane-polymethylvinyl siloxane block polydimethylsiloxane, trimethylolpropane diallyl ether, hydrogen-containing silicone oil and a platinum catalyst through a reaction. The heat-conducting silicone grease prepared by the invention has relatively good thixotropy, heat conductivity and low-heat-resistance stability, and silicone oil is not easy to separate out in a long-term cold and hot cycle use process.

The application provides a low-temperature electrolyte, a positive electrode slurry and a low-temperature sodium ion battery, and belongs to the technical field of battery materials.The low-temperature electrolyte comprises sodium hexafluorophosphate, propylene carbonate, ethylene carbonate, dimethyl carbonate, methyl ethyl carbonate, fluoroethylene carbonate, 2,2,3,4,4,4-hexafluorobutyl acrylate and 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether.The battery comprises the low-temperature electrolyte.The low-temperature electrolyte and the low-temperature sodium ion battery can not only be compatible with blended positive electrode materials, but also take into account the low-temperature performance, ensure that the prepared low-temperature sodium ion battery has good reaction kinetics and cycle performance, and can also improve the energy density of the electrode and reduce the powder resistivity.

The invention discloses a photocureable coating containing pentaerythritol triallyl ether and a preparation method thereof, and belongs to the field of coatings, the photocureable coating comprises the following components by weight: 100 parts of a photocureable oligomer matrix, 1-5 parts of a first photoinitiator, a composite nano filler and an auxiliary agent, the composite nano filler comprises 6 to 8 parts of PEAE modified nano filler composite mother liquor and 12 to 14 parts of active PEAE microspheres; the auxiliary agent comprises 3-5 parts of nano zirconium oxide dispersion liquid; the PEAE modified nanofiller composite mother liquor comprises a PEAE monomer and composite nanoparticles, and the mass ratio of the PEAE monomer to the composite nanoparticles is (4-5): 1; the active PEAE microspheres are obtained by taking pentaerythritol triallyl ether (PEAE), dipentaerythritol pentaacrylate, a second photoinitiator, a chain transfer agent, an emulsifier and deionized water as main raw materials, and irradiating the main raw materials through an emulsion polymerization method in combination with 80-85% of UV energy required by theoretical complete curing. On the basis of an existing photocuring system, the nano filler is improved, and the glossiness of the coating is relatively improved.

The present invention provides a flame retardant composition for foamed styrene resin, which can be used to produce a foamed molded body having excellent flame retardancy and heat resistance, a flame-retardant foamed styrene resin composition, and an extrusion-foamed molded body thereof. The flame retardant composition for foamed styrene resin of the present invention contains at least component (B1) tetrabromobisphenol A-bis(2,3-dibromo-2-methylpropyl ether), component (C) zinc fatty acid, and component (D) fatty acid metal salt (except for the (C) component), the content of the (C) component is 0.1 to 15 parts by mass per 100 parts by mass of the (B1) component, and the content of the (D) component is 1 to 35 parts by mass per 100 parts by mass of the (B1) component.

The invention discloses low-melting-point copolyester and a preparation method thereof, and belongs to the technical field of hot-melt polyester. The low-melting-point copolyester prepared by the invention comprises the following raw material components in parts by mass: 90-97 parts of a low-melting-point copolyester base material and 3-10 parts of a toughening agent, wherein the low-melting-point copolyester is obtained by melt polycondensation of terephthalic acid, 1, 4-butanediol, a flame-retardant monomer and lactic acid; the flame-retardant monomer is obtained by reacting amino acid diethyl ester with cinnamyl aldehyde and then reacting with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide; the toughening agent is obtained by copolymerizing glycidyl methacrylate, potassium 3-sulfopropyl methacrylate, hydroxyethyl methylacrylate and glyceryl trihydroxypropyl ether triacrylate; the low-melting-point copolyester prepared by the invention is low in melting point, good in flame retardance and excellent in mechanical property.

The application provides a cable cooling liquid and a preparation method and application thereof, and belongs to the technical field of cooling liquids, and comprises the following raw materials: perfluorobutyl methyl ether, 1,1,2,2-tetrafluoroethyl-2,2,3,3-tetrafluoropropyl ether, a plasticizer, a cosolvent, a chelating agent, a retarder, a flame retardant and an antioxidant. The cooling liquid prepared by the technical scheme provided by the application can achieve the purposes of excellent heat conduction capacity and corrosion resistance to cable materials.

Role of a cleaning textile for cleaning printing cylinders of a printing system, wherein the cleaning textile is impregnated with a cleaning agent composition, the cleaning agent composition comprising an organic solvent and a cellulose solubilizer, wherein the organic solvent is a propylene glycol oligomer, which is di(propylene glycol)propyl ether, and wherein the roller (12) is inserted into a removable sealing bag (15) which is designed to seal the roller (12) of cleaning textile (13) in order to prevent the cleaning agent composition from evaporating before use, wherein the sealing bag (15) is tubular and is made of a multilayer plastic film.

The invention belongs to the technical field of lithium ion battery electrolyte, and particularly relates to high-voltage electrolyte for a fast-charging lithium ion battery as well as a preparation method and application of the high-voltage electrolyte. Comprising the following substances: a main solvent, which comprises diethyl carbonate (DEC), dimethyl carbonate (DMC) and ethylene carbonate (EC); the diluent is 1, 1, 2, 2-tetrafluoroethyl-2, 2, 3, 3-tetrafluoropropyl ether (HFE), and the diluent is 1, 1, 2, 2-tetrafluoroethyl-2, 2, 3, 3-tetrafluoropropyl ether (HFE); lithium hexafluorophosphate (LiPF6); the film-forming additive is LiDFOB lithium difluoro (oxalato) borate; a film forming additive tri (trimethylsilyl) phosphate TMSP; and lithium nitrate LiNO3. The method provided by the invention is simple and easy to implement and low in cost, and the obtained electrolyte shows excellent specific capacity, charge-discharge cycle stability and rate capability as an electrode material of a lithium ion battery and a sodium ion battery.

The invention belongs to the technical field of textile dyeing and finishing production, and discloses a cationic color fixing agent and a preparation method thereof.The cationic color fixing agent is obtained by conducting self-polymerization on dimethyl diallyl ammonium chloride and then conducting cross-linking, and in the cross-linking process, the mass ratio of a dimethyl diallyl ammonium chloride self-polymer to a cross-linking agent is 70-80: 1-4; the cross-linking agent is selected from at least one of pentaerythritol triallyl ether, methyl triallyl silane, tetraallyl silane and triallyl (phenyl) silane, the molecular weight of the cationic monomer is firstly increased by synthesizing the self-polymer, and then cross-linking is performed, so that the gel risk is reduced.

The application belongs to the technical field of materials, and provides a bio-based bismaleimide resin and a preparation method and application thereof, the resin being prepared by copolymerization of curcumin allyl ether and N,N'-4,4'-diphenylmethane bismaleimide. The curcumin allyl ether has a beta-diketone conjugated system, and is prepared by nucleophilic substitution reaction of curcumin and allyl bromide in a potassium carbonate acetone system; when prepared, the two are cured in stages at 150-240 DEG C to form a high crosslinking network, and a vacuum degassing and curing process is combined. The bio-based bismaleimide resin provided in the application has a curing peak temperature that is 20-30 DEG C lower than that of a traditional BD resin, a Tg that is nearly 90 DEG C higher than that of the BD resin, a carbon residue rate at 800 DEG C that is greater than or equal to 42%, an LOI that is greater than or equal to 37%, reaches a UL-94 V-0 level, a THR that is as low as 12.4 kJ / g, less flammable volatile matter at high temperatures, and a high degree of carbonization of residual carbon.

This method for producing a fluoropolymer molded body includes heat-treating a molded body that contains a fluoropolymer and a fluorine-containing compound having a hydrophilic group at a temperature lower than the melting point of the fluoropolymer, thereby producing a molded body with the reduced content of the fluorine-containing compound having a hydrophilic group. The molded body contains a fluoropolymer containing at least one fluorine-containing ether monomer unit selected from the group consisting of perfluorovinyl ether units and perfluoroallyl ether units. The fluorine-containing compound having a hydrophilic group is a fluorine-containing compound represented by general formula: [C5F11COO-]M+ (where M+ represents a cation).

The utility model discloses a feeding device for producing pentaerythritol triallyl ether, and relates to the technical field of chemical production. The device comprises a bottom plate, a material box is arranged above an electric push rod, a conveying pipe is fixed to the bottom of the material box, a conveying motor is fixed to the left end of the conveying pipe, and a spiral blade is fixed to the outer portion of a rotating rod; a stirring motor is fixed in the middle of the upper wall of the stirring barrel; a fan is fixed on the upper side of the peripheral wall of the stirring barrel. The conveying pipe is inserted into the stirring barrel, raw materials are conveyed through rotation of the spiral blade, and the raw materials falling into the stirring barrel are dispersed under the action of airflow generated by the fan; the problems that in the prior art, vibration is generated during raw material conveying, part of raw materials drift away when the raw materials are separated from a feeding mechanism and move into a feeding hopper, the raw materials are wasted, the operation environment is polluted, the falling point is fixed after the raw materials enter a body, and the stirring efficiency during raw material stirring is reduced are solved.

The application discloses a kind of UV curing heat preservation coating and preparation method thereof, it is related to paint technical field.The application first with 2-ethyl-2-(mercapto methyl)-1,3-propanedithiol and pentaerythritol triallyl ether as raw material preparation UV curing coating, then join modified phase change microcapsule material as heat preservation auxiliary agent;Multi-functional group raw material can form highly crosslinked polymer network structure, improve the mechanical properties of coating after curing;Using oxidized foam metal load sugar alcohol mixture as the core material of phase change microcapsule, doped with p-fluorocinnamyl chloride modified polyamide as the shell material of phase change microcapsule, then interface polymerization method is used to prepare modified phase change microcapsule material, modified phase change material can more quickly absorb or release heat, improve the heat preservation effect, the surface of p-fluorocinnamyl chloride modified phase change microcapsule material contains double bond, can participate in curing reaction directly with resin network bonding, enhance interface strength.The UV curing heat preservation coating prepared by the application improves the heat preservation effect of coating.

The application discloses a food-grade high-strength and high-toughness paper pulp, paper products and a preparation method thereof, and belongs to the technical field of papermaking. The food-grade high-strength and high-toughness paper pulp comprises 100 parts of virgin wood pulp, 1-3 parts of alginic fiber, and 0.3-1.5 parts of a wet strength agent, and the wet strength agent is a random copolymer of methyl acrylate, glycidyl ether-based polyethylene glycol monoallyl ether, dihydro-jasmine acid methyl acryloyl oxy hydroxypropyl ester and acrylamide propyl trimethyl ammonium chloride. The alginic fiber and the wet strength agent are added into the virgin wood pulp, so that the strength and toughness of the paper products are improved.

A method for recovering monoether from ethylene glycol monoallyl ether preparation process wastewater, comprising the following steps: 1) taking ethylene glycol monoallyl ether preparation process wastewater, adding an extractant A, the extractant A being cyclohexane and / or n-hexane; 2) taking the water layer, adding a soluble salt to obtain a saturated salt solution; 3) adding an extractant B to the saturated salt solution, the extractant B being chloroform; 4) taking the organic layer, removing the extractant B to obtain the monoether. The present application has the advantages of simple steps, low cost, and the purity of the recovered monoether being greater than or equal to 99%, and the comprehensive recovery yield of the monoether reaching more than 99%.

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 invention discloses a water-based UV (ultraviolet) photocureable coating and a preparation method thereof, belongs to the technical field of coatings, and aims at surface stickiness and insufficient hardness and gloss caused by oxygen inhibition, a double modified dispersion of siloxane and allyl ether is introduced into a PUA (polyurethane acrylate) molecular chain to be matched with a water-soluble monomer and a photoinitiator; the surface of siloxane is enriched to form a low oxygen permeation layer, and allyl ether captures peroxy free radicals to construct a physical shielding and chemical capture synergistic system. The coating film hardness, wear resistance and hand feeling are remarkably improved, and the coating film is green, low in VOC, simple and convenient in process and wide in application.

The invention belongs to the technical field of organic silicone oil, and particularly relates to modified fluorosilicone oil as well as a preparation method and application thereof. The modified fluorosilicone oil provided by the invention has a structure as shown in a formula I, and n is any integer from 1 to 15; the ratio of c to d is (1-7): 1, the value of a / (a + b + c + d + e) is 0-30%, and the value of e / (a + b + c + d + e) is 1-45%. A side chain of the modified fluorosilicone oil provided by the invention simultaneously contains a hydrophilic group trimethylolpropane monopropyl ether group, an oleophylic group alpha-methyl phenethyl group, a long-chain alkyl group and an oleophobic group nonafluorohexyl group, so that the modified fluorosilicone oil has good solvent resistance and low surface energy performance; the low-temperature fluidity and surface energy distribution can be improved, when the defoaming agent is applied to a coating, the coating can have good defoaming property and leveling property, and the defoaming agent has good compatibility with white carbon black matting powder in a matte coating and can enable the white carbon black matting powder to be directionally arranged. Formula I.

The purpose of the present invention is to provide a surface treatment agent with which a film having good wear resistance can be achieved. The composition of the present invention contains a silane compound (A) having a fluoropolyether group and a compound (B) having a fluoropolyether group and an allyl ether group, the compound (B) includes at least one compound represented by formula (3), (4) or (5): RF1 [alpha]-XA-[ARB1 [delta] RB 23-[delta]] [beta] (3) [RB1 [delta] RB 23-[delta] A] [gamma]-XA-RF2-XA-[ARB1 [delta] RB 23-[delta]] [gamma] (4) RSi [gamma]-XA-RF2-XA-[ARB1 [delta] RB 23-[delta]] [gamma] (5) [wherein A each independently represents a C atom or a Si atom; the RF1 is respectively and independently Rf1-RF-Oq-; rF2 is-Rf < 2 > -RF-Oq <->; rf1 each independently may be substituted by a C1-16 alkyl group of one or more fluorine atoms; rf2 represents a C1-6 alkylene group which may be substituted by one or more fluorine atoms; each RF independently represents a divalent fluoropolyether group; p is 0 or 1; q are each independently 0 or 1; rB1 is-RB < 3 >-O-CH = CH-CH3, and RB < 2 > is-RB Each RB2 independently represents one or more elements selected from the group consisting of-RB3-O-CH2CH2CH2-SiRB4 [epsilon] RB53-[epsilon] and a hydrogen atom; rB3 are each independently a single bond or a C1-20 alkylene group; each RB4 independently represents a hydroxyl group or a hydrolyzable group; each RB5 independently represents a hydrogen atom or a monovalent organic group; each RSi independently represents a monovalent group containing a Si atom to which a hydroxyl group, a hydrolyzable group, a hydrogen atom, or a monovalent organic group is bonded; in formula (5), at least one RSi represents a monovalent group including an Si atom to which a hydroxyl group or a hydrolyzable group is bonded; each XA independently represents a single bond or an organic group having a valence of 2 to 10; alpha is an integer from 1 to 9; beta is an integer from 1 to 9; each gamma independently represents an integer of 1 to 9; and each delta independently represents an integer of 1-3. And each epsilon independently represents an integer of 1-3. ] (wherein compound (A) is different from compound (B)).

To provide a method for producing a compound suitable for use as a perfume and / or aroma having an aromatic note of musk.SOLUTION: A process for preparing a compound of formula (I) comprising the steps of: (A) etherifying a phenol derivative to obtain an allyl ether derivative; (B) Claisen rearrangement of the ether from step (A) followed by cyclisation; (C) acetylating or formylating the intermediate from step (B); wherein steps (A) and (B) are carried out in a one pot reaction. Wherein R1, R2, R3 and R4 represent hydrogen, methyl, ethyl, propyl, iso-propyl, butyl, sec-butyl, tert-butyl, iso-butyl, acetyl, formyl or SELECTED DRAWING: None

The application discloses an etherification reaction device for preparing pentaerythritol triallyl ether, which comprises a reaction tank, a feeding port is arranged on the inner top of the reaction tank, a discharging port is arranged on the inner bottom of the reaction tank, the feeding port is of a sealable structure, and a control valve is arranged in the discharging port; an agitating mechanism is arranged on the reaction tank, the agitating mechanism comprises a reciprocating screw rod which is rotationally connected to the inner top of the reaction tank, the agitating mechanism comprises two stirring rods which are fixedly connected to the left and right sides of the lower end of the reciprocating screw rod, and the two stirring rods are both in L shape; and an auxiliary mechanism is arranged in cooperation with the agitating mechanism. In the process of use, the liquid at the bottom can be pumped to the top part by cooperation of the spiral conveying rod and the stirring rod, then the whole is agitated, the stratification condition is effectively broken, and in addition, the heating structure cooperates with the mixing and agitating structure, so that more uniform heating effect can be realized.