50results about "Potassium organic compounds" patented technology

This invention relates to a process for the continuous production of potassium formate by the reaction of formaldehyde present in the reactor outlet gas in formaldehyde production plants with an aqueous solution of potassium hydroxide, wherein the formaldehyde is in gaseous monomeric form, the formaldehyde being fed to the reaction column at a temperature of 100° C. and above. By this invention, a straightforward method of potassium formate production and removal of excess reactant(s) are realized very efficiently. Pure potassium formate solution at any strength is produced. The strength of the product solution depends on where it will be used. Potassium Formate solution is used mainly as deicer, drilling mud, and / or in the production of flaked or granular Potassium Formate by appropriate methods. The flaked and granular Potassium Formate in turn is used in the fields mentioned above and also as an additive to animal feed.

Grafting a polymer at the surface of a carbonated material containing carboxyl amine and / or hydroxyl functions at its surface. This material is suspended in a solution comprising the polymer to be grafted, which includes a carboxyl amine and / or hydroxyl function, the solution also comprising a solvent of the polymer. This is followed by a treatment causing dehydration into a carboxyl function, an amide and / or hydroxyl function and the polymer is thus grafted on the carbonated material by means of ester or amide bonds. Utilization in the cathode or anode of an electrochemical generator, in a polymer material with low polarity, in an ink, and as a conductive deposit on flexible plastic used as electrical contact, electromagnetic protection and antistatic protection.

The present specification relates to a sulfonate-based compound and a polymer electrolyte membrane using the same, a membrane electrode assembly including the same, and a fuel cell including the same.

The invention discloses a Mannich base metal iodide corrosion inhibitor and a preparation method thereof. The Mannich base metal iodide corrosion inhibitor comprises components of the following mass percentage: 15 to 30 percent of the metal iodide of a condensate of ketone, aldehyde and amine, and 70 to 85 percent of complex, wherein the complex is made up of following materials with mass percentof: 5 to 15 percent of cetylpyridinium chloride, 5 to 20 percent of emulsifier, and 65 to 80 percent of solvent. The metal iodide of a condensate of ketone, aldehyde and amine can be obtained by reaction of the metal iodide and the condensate of ketone, aldehyde and amine synthesized with 1-naphthy lamine, paraformaldehyde, and ethyl phenyl ketone. The problem that other corrosion inhibitors can be easily decomposed at high temperature can be solved, the inconvenience in production caused by toxic material can be reduced, acidification and corrosion of hydrochloric acid at high temperature can be inhibited, the problem of corrosion by strong acid during the acidification fracturing of petroleum exploitation can be solved, and the goal of protecting oil pipes can be achieved.

The invention discloses a 5,5'-azodi(1-nitriminotetrazolate)bi-potassium compound.The structural formula of the 5,5'-azodi(1-nitriminotetrazolate)bi-potassium compound is shown in the description.The 5,5'-azodi(1-nitriminotetrazolate) bi-potassium compound is mainly used for the field of energetic materials.

The invention relates to a process for preparing an alcoholic solution of an alkali metal alkoxide from alkali metal hydroxide and alcohol in a reaction column, the alcohol and the alkali metal hydroxide being conducted in countercurrent, which is characterized in that a reflux ratio of at least 0.05 is established in the reaction column.

The invention relates to new synthetic 2-(α-hydroxypentyl) benzoates, their preparation and pharmaceutical compositions containing such salts as active ingredients. The invention also relates to the use of the compounds for preventing and treating cardioischemia, cerebroischemia and cardiac or cerebral arterial occlusion (obstruction), etc.

The invention belongs to the technical field of organic synthesis, and concretely discloses a method for preparing pyrazole sulfamide type sodium, potassium and calcium metal complexes by an ultrasonic wave one-pot method and application. Pyrazolone ring amidogen is subjected to structure modification and solvent participation; a series of pyrazole sulfamide type sodium, potassium and calcium metal complexes are synthesized by the ultrasonic wave one-pot method. The metal coordination modes of sodium, potassium, calcium and the like are diversified; the coordination with nitrogen atoms and oxygen atoms on sulfamide is realized; the coordination with oxygen atoms on a solvent can also be realized; metal on the potassium complex can also be coordinated with halogen atoms on substitutional groups; the synthetized sulfamide type metal complexes based on a pyrazole framework have excellent biological activity; particularly, high activity is shown in the insect killing and antibiosis aspects, so that the synthetized sulfamide type metal complexes based on the pyrazole framework have great research and development and application values.

The invention relates to a process for preparing an alcoholic solution of an alkali metal alkoxide from alkali metal hydroxide and alcohol in a reaction column, the alcohol and the alkali metal hydroxide being conducted in countercurrent, which is characterized in that a reflux ratio of at least is established in the reaction column.

The present invention relates to the utilization of polyglycol methyl ether as the side product of reaction between methanol and ethylene epoxide. The side product is used as material to prepare polyglycol dimethyl ether through the steps of reaction with sodium or potassium hydroxide, sodium methoxide and metallic sodium to prepare polyglycol methyl ether sodium or polyglycol methyl ether potassium; the subsequent Williamson reaction with alkylating agent, filtering out sodium salt or potassium salt as side product, dewatering, decolorizing with active carbon or acid white clay, adsorption and high vacuum decompression distillation. The alkylating agent is chloromethane, dimethyl sulfate or dimethyl carbonate. The utilization of the side product can reduce the comprehensive cost.

PCT No. PCT / JP97 / 01843 Sec. 371 Date Jan. 30, 1998 Sec. 102(e) Date Jan. 30, 1998 PCT Filed May 29, 1997 PCT Pub. No. WO97 / 45433 PCT Pub. Date Dec. 4, 1997There is disclosed a method of preparing benzyl metal compounds represented by general formula (2), comprising reacting a phenyl metal compound represented by general formula (1) with toluene, in the presence of a catalytic amount of amine. According to this method, benzyl metal compounds can be prepared at a high yield, and in an industrially advantageous manner. Further, there is also disclosed a method of preparing 4-phenyl-1-butenes, comprising reacting the benzyl metal compound obtained in the method, with an allyl halide. wherein M represents an alkali metal, wherein M has the same meaning as the above.

The invention discloses an anion cage compound with a fluorescent property and a preparation method thereof, which aim to construct a series of tetrahedral cage structures based on phosphate anion coordination in order to overcome the defect that currently reported supramolecular cage structures constructed by anion coordination lack more direct detection signals. And a series of fluorescent materials responding to halogenated alkane and Freon gas molecules are obtained by utilizing the cage-shaped structures to identify a series of halogenated alkane and Freon molecules. A ligand is reasonably designed, and the ligand and phosphate anions are self-assembled to form an anion tetrahedral cage with a fluorescent property. The tetrahedral cage can capture and respond to a series of halogenated alkane and Freon molecules harmful to the environment, and is of great significance to environmental protection, especially air protection.

The invention discloses an organic-inorganic hybrid perovskite nano material and a preparation method thereof, and the preparation method is as folows: dispersing piperazine and BX in water to obtaina mixed liquid, and adding HX to the mixed liquid to obtain an acidic mixed liquid; placing the acidic mixed liquid for 3 days-7 days to form a colorless block crystal, namely blocky organic-inorganichybrid perovskite C4H12N2BX3.H2O; and heating the blocky organic-inorganic hybrid perovskite C4H12N2BX3.H2O at 100 DEG C to 120 DEG C for 1h-3h to obtain nanoscale hybrid perovskite C4H12N2BX3; wherein B is K or Rb, and X is Br, Cl or I. The preparation method is a method for preparing the organic-inorganic hybrid perovskite nanomaterials in large quantities and at low cost, and the hybrid perovskite nanomaterial prepared by the method has the advantages of simple process, low cost and mild reaction condition, and reactions are safer due to no high temperature and high pressure.

The invention concerns a halogen-free polymeric blend capable of ionic conductivity comprising either one or more polyether-based polymers or copolymers that have favorable structures to facilitate polymer chain segmental motion and ion hopping environment, selected from the group of polyether-block-polymers and polyether-based polyurethanes, or said polyether based polymers or copolymers together with one or more ionomers formed by neutralization of ethylene acid co-polymers, as well as one or more specific halogen-free ionic complexes or salts comprising a weakly coordinating anion and a cation of an alkali metal or alkaline earth metal. Further, the invention concerns the use of said blend and a plastic material containing said blend as an additive.

Anionic polymerization initiators useful in the preparation of polymers having a protected amine functional group. The amine functionality includes a first protecting group, which can be aralkyl, methyl, allyl or tertiary alkyl group. The other of the amine protecting groups can be the same as the first protecting group. Alternatively, the second protecting group can be different from the first protecting group, in which case it is selected to have differential stability to agents used to remove the aralkyl, methyl, allyl or tertiary alkyl protecting group.

A potassium salt or a sodium salt of (−)-2-{[2-(4-hydroxyphenyl)ethyl]thio}-3-[4-(2-{4-[(methylsulfonyl)oxy]phenoxy}ethyl)phenyl]propanoic acid, processes for their preparation, their use in treating clinical conditions including lipid disorders (dyslipidemias) whether or not associated with insulin resistance and other manifestations of the metabolic syndrome, and pharmaceutical compositions containing them.

Provided are a production method for a potassium organotrifluoroborate compound having a hydroxyl group, and a novel potassium organotrifluoroborate compound having a hydroxyl group. The production method is advantageous in that a potassium organotrifluoroborate compound can be produced in a single reaction without recourse to a process of isolating and purifying an intermediate. The novel potassium organotrifluoroborate compound having a hydroxyl group is useful as a reactant which is widely used in the total synthesis of physiologically active natural products and diverse organic synthesis reactions including halogen substitution reactions, 1,2- and 1,4-addition reactions using a rhodium (Rh) catalyst, and Suzuki coupling reactions using a palladium (Pd) catalyst.

The invention discloses a method for preparing 1,2,3,4-tetrahydro-1-naphthoic acid by using a superstrong alkali method. The method comprises the following steps: (1) under the protection of nitrogen,preparing a hydrogen drawing product by using tetrahydronaphthalene as a raw material, adding potassium tert-butoxide, using n-hexane as a solvent and dropwisely adding n-butyllithium; and (2) underthe protection of nitrogen, introducing dry carbon dioxide into the system, and acidifying to obtain the target product, wherein in the step (1), a molar ratio of potassium tert-butoxide to n-butyllithium is 1:(0.5-1.5), preferably 1:1.0, and preferably in the step (1), a molar ratio of the superstrong alkali to the tetrahydronaphthalene is 1:(0.5-2), preferably 1:(1.2-1.5). Compared with the method in the prior art, the method of the invention has the advantages of short steps, cheap raw materials, high yield, high operability, good repeatability and convenience in industrialization.

The invention discloses an amido phenoxy potassium complex containing oxazoline rings or benzoxazole rings, a preparation method of the complex and an application of the complex to high-activity catalysis lactone ring opening polymerization. The preparation method of the amido phenoxy potassium complex containing the oxazoline rings or the benzoxazole rings includes the steps: directly reacting neutral ligands with metal raw material compounds in organic media; performing filtration, concentration and recrystallization to obtain target compounds. The amido phenoxy potassium complex is providedwith an efficient lactone ring opening polymerization catalyst, can be used for catalyzing polymerization reaction of lactones such as lactide and is particularly used for catalyzing racemic lactonesto obtain a polymer with high-molecular weight. The amido phenoxy potassium complex has obvious advantages that raw materials are easily acquired, a synthetic route is simple, product yield is high,the complex has high catalytic activity, polyester materials with high-molecular weight can be acquired, and the requirements of industrial departments can be met. The structural formula of the amidophenoxy potassium complex is as shown in the specification.

The present specification relates to a sulfonate-based compound and a polymer electrolyte membrane using the same, a membrane electrode assembly including the same, and a fuel cell including the same.

The present invention discloses an ethylene polymerization catalyst, which comprises a main catalyst and a co-catalyst, the main catalyst is a bisphenol metal complex represented by a formula I, and the co-catalyst comprises an organic aluminum compound; in the formula I, R1, R1', R2 and R2' are the same or different and are independently selected from hydrogen and substituted or unsubstituted C1-C20 alkyl; R3-R7 and R3'-R7' are the same or different and are each independently selected from hydrogen and substituted or unsubstituted C1-C20 hydrocarbyl; R8 and R9 are the same or different, and are each independently selected from hydrogen or substituted or unsubstituted C1-C20 hydrocarbyl; M and M'are the same or different and are selected from group IV metals; and X is halogen.

The present invention discloses a Double Metal Cyanide (DMC) catalyst(s) useful for the production of polyether polyols (PEPO) and a less energy intensive room temperature method for the synthesis thereof. The catalyst(s) comprises of a DMC complex, an organic complexing agent, i.e., ethylenediaminetetraacetic acid (EDTA) and other co-complexing organic agents, e.g., t-BuOH, PEPO of composition ranging from about 1 to 10 wt %, wherein the average molecular weight of PEPO used ranged from 200 to 1000. A method of preparing a series of DMC catalyst(s) at room temperature with varying compositional ratios of the complexing and co-complexing agents targeting a wide range of PEPO of varying kinematic viscosity range is also disclosed. These DMC catalyst(s) are amorphous, highly active, and easily separable from product PEPO with recyclability / recoverability, making the product PEPO better industrially applicable and DMC catalyst more cost-effective.