153 results about "Anhydrous" patented technology

The invention discloses a new kind of carborane- silane- phenylacetylene polymer and the method for preparing the same. Said polymer employs methylchlorosilane, phenylacetylene, carborane and organic lithium agent as raw material, anhydrous tetrahydrofuran (THF) as dissolvent and preparing with protection of nitrogen. The invention moderates molar ratio between simple function group ethynyl compound and carborane to easily control molecular weight of polymer, crosslinking density and carborane content, and realizes purpose of adjustable polymer property. The invention is characterized by simple process and easy operation. The prepared polymer forms thermostable thermosetting material with excellent thermal oxidation performance by heat, light and chemical initiation. Said thermosetting material can be produced to ceramic structure by heating on air or inactive gas. The polymer can be used as base resin and thermo-stable coating for advanced complex material and for preparing ceramic pioneer body.

The invention provides a method for preparing a Salen-metal complex. The method comprises the following steps of: under the argon atmosphere, adding ligands(II), sodium methoxide, absolute methanol soluble ligands(II) and sodium methoxide into a reactor in sequence; stirring the mixture for 2 minutes, and adding 1mol/L cobalt acetate anhydrous/ methanol solution dropwise, wherein the molar ratio of the ligands(II) to sodium methoxide to cobalt acetate is 1:1:1; and making the mixture reacted at the room temperature for 24 hours, adding anionic salt which has the same molar weight as the cobalt acetate, stirring the mixture for three days in the air, stopping the reaction, concentrating the mixture, performing dissolution and filtration by adding methylene chloride, drying the filtrate by anhydrous sodium sulfate overnight, filtering the mixture, concentrating under reduced pressure, and drying the mixture under the vacuum condition to obtain the Salen-metal complex. The Salen-metal complex prepared by the method has the advantages of simple method, low cost and high catalytic efficiency.

Anhydrous antiperspirant formulations in which a particulate antiperspirant active is suspended in a carrier fluid can result in significant visible deposits when applied to skin or when transferred onto clothing.Anhydrous antiperspirant suspension sticks which exhibit very low visible deposits are obtainable by employing a carrier fluid in which at least 45% and preferably at least 60% of its weight comprises an oxygen-containing emollient oil having a refractive index of at least 1.465, in conjunction with structurant comprises a wax or a non-polymeric fiber-forming gellant, excluding certain gellants or gellant combinations. Preferred emollient oils include alkyl benzoates and alkylphenylsiloxanes. The waxes can even comprise fatty alcohols.

The invention provides a preparation method for a modified graphene oxide adsorption material. The preparation method comprises the following steps: (1) ultrasonically dispersing graphene oxide in anhydrous N,N-dimethylformamide, then adding diphenylmethane diisocyanate and carrying out a reaction; and (2) uniformly mixing diphenylmethane diisocyanate-functionalized graphene oxide with ethylenediaminetetraacetic acid, and successively carrying out grinding, washing and freeze-drying so as to obtain the modified graphene oxide adsorption material. According to the invention, isocyanate is used as a bridge body, and a composite material is prepared through amidation and urethanization; an adsorbent prepared by using the method contains both polycarboxy functional groups and polyhydroxyl functional groups, has excellent adsorption effect on heavy metal ions in wastewater, and can overcome the defect that a chelate is dissolved in water and cannot be separated when EDTA is individually used for heavy metal removal.

An anhydrous tiotropium bromide is prepared from scopolamine hydrobromate. Its preparing process is also disclosed.

The invention discloses a method for preparing an aluminum-scandium intermediate alloy by thermally reducing aluminum in elpasolite fused salt and belongs to the technical field of materials. The method comprises the following steps: (1) mixing anhydrous KF and anhydrous AlF3; (2) adding Sc2O3 and uniformly mixing; (3) increasing the temperature of mixed salt to 720-1020 DEG C, and maintaining temperature for 30-60 minutes; and (4) adding reducer metal aluminum, thermally reducing at the temperature of 720-1020 DEG C, separating an alloy part and an electrolyte part, condensing the alloy part and then forming the aluminum-scandium intermediate alloy. An electrolyte system adopted by the method is high in solubility of KF-AlF3; the content of Sc in the prepared Al-Sc intermediate alloy meets the requirement of the national standard; low-cost scandium oxide is used as the raw material; the process is simple; the preparation process of the aluminum-scandium intermediate alloy is shortened; the production cost is reduced.

The invention provides an anhydrous nano automobile cleaning care agent. The anhydrous nano automobile cleaning care agent is prepared from, by weight, 1-80 parts of carnauba wax, 1-90 parts of silicone oil, 1-100 parts of surfactant, 2-25 parts of ultraviolet light absorber, 1-10 parts of filler, 10-30 parts of deionized water and 0.1-0.6 part of ethyl alcohol. The automobile care agent which is free of toxins and harm, environmentally friendly and rapidly permeable, and has an excellent effect of removing residues on the surface of an automobile after snow and rain is provided on the basis of the prior art. The anhydrous nano automobile cleaning care agent protects automobile paint while achieving the strong effect of removing dirt, scratches and other damage caused to the automobile paint in the wiping process are avoided, the surface of the automobile can be protected in a long-acting mode, and the novel automobile cleaning care agent has the excellent effect.

A preparation method of a high-voltage-resistant solid polymer electrolyte includes the steps of: 1) according to certain ratio, dissolving a polymer substrate, lithium salt, and an inorganic additivein anhydrous acetonitrile and stirring the mixture at room temperature to obtain a uniform solution, wherein the polymer substrate is polyoxyethylene, the lithium salt is lithium bistrifluoromethylsulfonimide or lithium perchlorate; the inorganic additive is nano-wires or nano-particles of zinc borate, aluminum borate, sodium tetraborate, barium metaborate or calcium borate, the mass ratio of thepolyoxyethylene to the lithium salt EO : Li<+> is 10-20:1, and the mass of the inorganic additive is not more than 20% of the total mass of the polymer substrate and lithium salt; 2) pouring the solution into a polytetrafluoroethylene mold to volatilize the solution until completely dried, thus preparing the solid polymer electrolyte. The method improves the high-voltage resistance of the solid polymer electrolyte, so that the product fits a high-voltage ternary cathode material and energy density and safety of an all-solid-state battery are improved.

The invention relates to proton-conducting polymers, including tetrazole-containing polymers. Proton-conducting membranes useful for fuel cell applications are formed from mixtures of a polymer with one or more non-aqueous proton sources. In representative examples of the present invention, tetrazole groups are attached to a polymer backbone such as polyphosphazene, the tetrazole groups interacting with the proton source.

The invention relates to adefovir dipivoxil anhydrous crystallisate. It is characterized in that : XRD: radiating with Cu-k alpha , x ray powder diffraction spectrum expressed in 2 theta having characteristic absorption peak at 3.2,6.5,8.6, 15.7,19.6,21.6, DSC: DSC converting due to absorbing heat at 80 degree; infrared absorption spectrum : KBr pellet , characteristic absorption peak being at 3287cm-1,3175cm-1,1753cm-1,1254cm-1,1147 cm-1,1025cm-1,970cm-1. The present invention also discloses adefovir dipivoxil anhydrous crystallisate preparation method and its pharmaceutical composition. The inventive adefovir dipivoxil anhydrous crystallisate dissolves quicker than 102 degree crystal form, is high in dissolution, and is stable relative to 94 degree crystal form and not easy to be hygroscopic.

The invention provides a method of continuous evaporation crystallization and a production method of anhydrous citric acid crystal. A crystallizer used in the method comprises a cavity; the method comprises pouring materials to be crystallized into the cavity continuously; carrying out evaporation crystallization to the materials to be crystallized under an evaporation crystallization condition; and discharging mixture with crystal during the evaporation crystallization process; the method is characterized in that the materials to be crystallized are added into the cavity along the inner wall of the cavity from the position higher than the liquid level in mode of liquid membrane partially or completely. With the method of the continuous evaporation crystallization, provided by the invention, the moisture content in the crystal is reduced and the anti-caking capacity of the crystal is improved. According to the method provided by the invention, the anhydrous citric acid seed crystal is added and lasted for a certain period during the production of the anhydrous citric acid crystal, the time of a crystallization system reaching the balance state is shortened greatly, and the particle diameter of the anhydrous citric acid crystal before the crystallization system reaches the balance state is enlarged.

The invention provides a nano composite adsorbent as well as a preparation method and an application thereof. The preparation method comprises the following steps: dispersing SWCNH into a nitric acidsolution for modification to obtain carboxylated SWCNH; catalyzing carboxylated SWCNH and p-phenylenediamine as reaction raw materials by a catalyst under protection of nitrogen to obtain SWCNH-NH2 nanofiller; mixing and stirring 3,3',4,4'-biphenyltetracarboxylic dianhydride with anhydrous N,N-dimethylacetamide until complete dissolution to obtain a solution I; adding the SWCNH-NH2 nanofiller to the solution I, and performing stirring in an ice-water mixture environment at 0 DEG C to obtain a solution II; adding p-phenylenediamine to the solution II, continuing to stir at a low temperature toenable reactants to be fully reacted, and finally obtaining a viscous pale yellow polyamic acid solution which is uniformly dispersed. The prepared PAA/SWCNH-NH2 nanocomposite adsorbent has high adsorption capacity for uranyl ions in an aqueous solution, high adsorption speed, good reusable effect and strong selective adsorption capacity for uranium ions, and can effectively adsorb and recover uranyl ions from the aqueous solution.

The invention relates to a method for preparation and application of a Cu(II) solid-phase extracting agent based on a carbon nanotube. The preparation method comprises the following steps: refluxing 0.5-1g of carboxylated carbon nanotube and 20mL of anhydrous thionyl chloride for 1-2 day(s) at 60-90 DEG C, vacuum-filtering, washing the filtered residue with anhydrous tetrahydrofuran, and vacuum-drying the filtered residue for a night, thereby obtaining an acylated carbon nanotube; and dispersing the acylated carbon nanotube into mixed solution of 0.1g of 2,-2'-bipyridylamine, a mL of triethylamine and 100mL of anhydrous N, N-dimethylformamide, refluxing for 48 hours at 100 DEG C under the nitrogen atmosphere, vacuum-filtering, washing the filtered residue with absolute ethyl alcohol for three times, and then vacuum-drying for 1-2 day(s), thereby obtaining the Cu(II) solid-phase extracting agent based on the carbon nanotube. The application method comprises the following steps: filling 5-10mg of Cu(II) solid-phase extracting agent into a 6mL solid-phase extraction small column of a solid-phase extraction device, carrying out dynamic Cu(II) enrichment for 1-5mug/L of Cu(II)-containing water sample to be tested, and eluting and desorbing the solid-phase extracting agent rich in Cu(II) with 1-3M of dilute nitric acid, thereby recovering the Cu(II). The recovery rate of the Cu(II) reaches 97 percent, and the desorbed Cu(II) solid-phase extracting agent can be recycled for 4-5 times.

The invention discloses a preparation method of a material used for treating wastewater containing aromatic nitro-compounds. In the method, firstly, 10-15g of bentonite is crushed into 20-200 meshes and then can be dispersed in 25-30ml of acetone to prepare turbid liquid; then, anhydrous KCl and anhydrous FeCl3 are added into the turbid liquid, the total amount of the anhydrous KCl and the anhydrous FeCl3 is counted by the total amount of K+ and Fe3+ charges and is 10-100% of the total cationic exchange content of the bentonite, the proportion of the FeCl3 and the KCl is 1:2-1:4, the mixed solution is stirred for 4-6h, and the temperature during stirring is 10-30 DEG C; finally, the mixed solution is precipitated and separated, so that the precipitate turbid liquid is dried to obtain the water treatment material. The water treatment material prepared by the method can adsorb the aromatic nitro-compounds efficiently and can directly decompose the adsorbed organic pollutants into carbon dioxide, water and other harmless maters by adopting the Fe3+ catalytic action, and the water treatment agent after decomposition can be recycled.

Disclosed is a preparation method of an adefovir dipivoxil anhydrous crystal mass, the acquired adefovir dipivoxil anhydrous crystal mass as well as applications thereof, comprising the steps of: A. dissolving a crude product of adefovir dipivoxil with 95 percent ethanol; B. adding ether into a crystallization kettle, agitating the mixture and cooling the temperature to between 2 and 5 DEG C, adding the dissolved solution of adefovir dipivoxil acquired in the step A into the crystallization kettle, and agitating the mixture until reaching crystallization; and filtering the crystal mass, collecting a wet product of the crystal mass and then drying the wet product, wherein, the ether is one or more of iso-propyl ether, n-butyl ether and sec-butyl ether. The obtained crystallization yield reaches over 96 percent, and the crystal mass purity reaches above 99.5 percent. The adefovir dipivoxil anhydrous crystal mass is applied to the preparation of medicines for curing anti-hepatitis B viruses, and has good product activity.

The invention relates to a preparation method and an application of an omega-diamine derivatization beta-cyclodextrin bonded SBA-15 chiral stationary phase. The preparation method comprises steps as follows: 6-p-tosylation beta-cyclodextrin and omega-diamine are taken as raw materials, the omega-diamine is a solvent, and 6-(omega-diamine)-beta-cyclodextrin ligand is prepared through heating; the 6-(omega-diamine)-beta-cyclodextrin ligand and 3-isocyanato propyl siloxane react to prepare siloxane containing the 6-(omega-diamine)-beta-cyclodextrin ligand; anhydrous N,N-dimethyl formamide is taken as a solvent and heated under the protection of nitrogen, so that the siloxane containing the 6-(omega-diamine)-beta-cyclodextrin ligand reacts with a silanol hydroxyl group on the surface of SBA-15 silica gel, and a coarse product is obtained; and redundant ligand and impurities in holes are cleared, and a final product is obtained. The preparation method is simple, convenient, lower in cost, wide in application and suitable for rapidly preparing the chiral stationary phase.

The invention provides a preparation method of high-quality anhydrous rare earth chloride and bromide. The preparation method comprises the following steps: (1) carrying out pre-dehydration on the rare earth halide REX<3>-xH<2>O to obtain crude anhydrous REX<3>, wherein X is elemental Br and/or Cl, RE is any one rare earth element or two or more rare earth elements consisting of Y, Sc, La, Ce, Pr,Nd, Sm, Pm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb and Lu, and x is no less than 0 and no more than 7; (2) vacuumizing the crude anhydrous REX<3> obtained in the step (1) under water-isolated and oxygen-isolated conditions; and (3) carrying out gradient heating on a system formed in the step (2) in a plurality of stages from 200-1500 DEG C, and carrying out distillation purification on the target objectREX<3> to obtain the high-purity anhydrous REX<3> with the absolute purity of more than or equal to 99.99%. According to the preparation method of the high-quality anhydrous rare earth chloride and bromide, different substances in a material are separated through process control, so the anhydrous rare earth halide with extremely high absolute purity is obtained; and the preparation method is relatively low in process cost, and easy for industrial production.

The invention discloses a mass production method for 4-chloro-2'-cyanobiphenyl. The mass production method comprises the following steps: para chlorobromobenzene and magnesium chips in a mole ratio being (1:1)-(1:5) are added to anhydrous tetrahydrofuran for a reaction under protection of nitrogen, and a Grignard reagent is prepared; 2-chlorobenzonitrile, a manganese compound catalyst and anhydrous tetrahydrofuran are mixed, then the Grignard reagent is added slowly to the mixture for a reaction, tetrahydrofuran is recovered after the reaction through filtration and desolvation, toluene is added, the pH value is regulated with an acid to be 1-5, an organic phase is separated out, the solvent is removed, and 4-chloro-2'-cyanobiphenyl is obtained. The raw materials are cheap and easily available, the total yield is higher, aftertreatment is simpler, and less pollution is caused.