The way to get calcium acetate

The invention relates to waste disposal and the simultaneous achievement of commercial products and can be used in other industries where liquid wastes with a content of acetic acid

The invention relates to ORGANOMETALLIC chemistry, namely to new connections, particularly to salts (4-hydroxy-3,5-di-tert-butylphenyl)-propionic acid of General formula
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where R = C(CH₃)₃, Me is a metal selected from the group of Zn, Ba, Ca, Cd, Al, Sn, Mg, Cr⁺³, Mn⁺², n is the valence of the metal, n = 2 to 4, which can find use as a stabilizer for polymers and additives to oils

The invention relates to the production of paint and varnish materials, namely, synthetic drying oils on the basis of naphthenic acids

The invention relates to the field of synthesis of organic metal salts, such as 2-ethylhexanoate metals, which are used in the production of polymeric materials, stabilizers and modifiers, allowing you to modify the rheological properties of polymer materials, and also as additives to paints, varnishes, lubricants and raw materials for thin film deposition of complex oxides

The invention relates to a method for allocation of fluorinated carboxylic acids, allowing you to get them with a high degree of purity

The invention relates to the field of electrochemical synthesis of organic compounds, in particular 2-ethylhexanoate metals that are used in the manufacture of polymeric materials as stabilizers and modifiers

The invention relates to the field of pharmacy, the synthesis of salts of polyvalent metals with salicylic and acetylsalicylic acids and can be used to obtain practical pharmacopoeial forms of salicylates aluminum in pharmaceutical laboratories

The invention relates to petrochemical synthesis, namely the method of obtaining calcium stearate used as a stabilizer for polyvinyl chloride, and also in the manufacture of varnishes, surface-active compounds that are used as flotation agents

The invention relates to the field of technology organochlorine compounds, and in particular to a method for producing sodium salt of monochloracetic acid used in the production of monochloracetic acid used in the production of sodium salt of carboxymethyl cellulose, dyes, herbicides, vitamins b₆and medicines

The invention relates to radiochemical technology and can be used in technologies for radionuclides and rare earth transplutonium elements and manufacturing, as well as in preparative inorganic and analytical chemistry

Invention relates to a method for preparing the preparation comprising triterpenic acid water-soluble salts and additionally added protein-containing product and vegetable raw, the source of triterpenic acids taken in the following ratio of components, wt.-%: protein-containing product, 10-17; triterpenic acid sodium salts, 4-5, and vegetable raw, the balance. Method involves mixing triterpenic acid-containing vegetable raw with the protein-containing product taken in the ratio = (9-11):(1-2), mechanical-chemical treatment of this mixture in activator device, mixing of prepared semi-finished product with sodium carbonate or sodium hydrocarbonate taken in the ratio = (92-97):(3.5-8.3) and repeated treatment in the activator device. Method involves applying flow-type ball vibration-centrifugal or ellipse-centrifugal mills as the activator device that provide the acceleration of milling bodies up to 170-250 m/c² and time for treatment for 1.5-3 min. Invention provides simplifying the process and the complex processing waste in lumber industry.

Invention relates to a method for preparing copper (II) acetate monohydrate that represents organic carboxylic acid salt. Copper (II) acetate monohydrate is prepared by crystallization from solution obtained by mixing acetic acid, alkaline metal acetates or ammonium with copper-containing spent solution used in etching printing boards. Method provides reducing cost of the proposed method for preparing copper (II) acetate monohydrate, retaining purity of product with simultaneous utilization of toxic waste in electronic engineering manufacture - the spent solution in etching printing boards. Also, invention provides reducing material consumptions in preparing copper (II) acetate monohydrate, expanding assortment of materials used for its preparing and utilization of toxic waste in electronic engineering manufacture. Product obtained by the proposed method can be used as pigment, fungicide and copper microfertilizer in agriculture, as catalyst in processes of polymerization, as a stabilizing agent of artificial fibers, for preparing galvanic solutions and preparing other copper compounds.

Invention relates to the improved method for preparing nickel oxalate that can be used in preparing catalysts, ceramic materials and in manufacturing electric vacuum devices. Method involves preparing the reaction solution containing nickel (II) and oxalate, crystallization of product, separation of precipitate from solution and its drying. The reaction solution is prepared by mixing reagent as source of oxalate and spent solution from chemical nickel plating taken in the amount providing the mole ratio in the reaction solution nickel (II) : oxalate = 1.0:(0.8-2.8). Spent solution of chemical nickel plating contains as main components nickel (II), ligand for nickel (II), reducing agent and product of its oxidation. As spent solution of chemical nickel plating method involves using solution containing nickel (II), ligand for nickel (II), hypophosphite, phosphite as main components and pH value in the reaction solution is brought about from 2.5 to 7.5. As spent solution of chemical nickel plating method involves using solution containing nickel (II) and ligand for nickel (II) as main components. As a reducing agent method involves using substance taken among the group including hydrazine, borohydride, hydrazine borane, alkylaminoborane, dithionite, hydroxymethyl sulfinate, thiourea dioxide, product of reducing agent oxidation and pH value in the reaction solution is brought about 0.0 to 8.5. Invention provides reducing material consumptions for preparing nickel oxalate, expanded assortment of materials used for preparing nickel oxalate, utilization of manufacture waste, reduced cost of product and simultaneous utilization of the spent solution of chemical nickel plating representing toxic waste of manufacturing.

Copper (II) salts with dicarboxylic acids are prepared by crystallization from reaction aqueous solution obtained by mixing reagent as source of dicarboxylic acid anion and waste from radio-electronic manufacturing - spent solution in etching printed boards. Solutions containing copper (II), ammonia or mineral acid, ammonium salts and other substances are used as the spent solution in etching printed boards. Dicarboxylic acid, dicarboxylic acid anhydride, dicarboxylic acid salt with sodium, potassium, ammonium or aqueous solutions of these substances are used as reagent representing the source of dicarboxylic acid anion. Prepared copper (II) salts can be used in manufacturing high-temperature superconductors, as fungicides and copper microfertilizers in agriculture, medicinal agents in veterinary science, for antibacterial treatment of water and in other fields. Invention provides reducing cost of products, retention of their purity, utilization of waste in radio-electronic manufacturing (spent solution in etching printed boards of different composite).

Product obtained by this method may be used as pigment for production of catalysts of synthesis of inorganic and organic substances, manufacture of ceramic articles and production of oxide and other compounds of zinc. Proposed method includes preparation of reaction solution containing zinc (II) and oxalate, crystallization of target product, separation of sediment from solution and drying the sediment; reaction solution is prepared by mixing the solution of zinc plating process and oxalate-containing reagent; use is made of used solution of zinc plating process and reaction solution containing zinc (II) and oxalate at mole ratio of 1.0: (0.8-3.0) is prepared.

Invention relates to a method for preparing calcium stearate used for stabilization of plastic masses, in manufacture of paint and varnish materials, vitamin and medicinal preparations. Preparing calcium stearate is carried out by interaction of stearic acid and calcium oxide or hydroxide in the equimole ratio of reagents. The process is carried out in the solid phase under atmosphere pressure and intensive stirring without heating in the presence of zeolite of CaX type taken in the amount 6.7-16 wt.-%. Method provides simplifying technology due to a single stage process and improvement of economical indices.

Invention relates to the improved method for preparing aromatic carboxylic acid ammonium salts by reaction of aromatic carboxylic acid with ammonia in aprotonic solvent medium. Method involves carrying out the reaction in the closed vessel by continuous addition of aromatic carboxylic acid in aprotonic solvent medium and passing gaseous ammonia under condition providing maintenance of ammonia partial pressure in the range from 0.1 to 3 bars and elimination of ammonium salt suspension in aprotonic solvent. Method allows preparing ammonium salts as crystals of a definite size that exhibit narrow distribution by size.

Invention relates to the improved methods (variants) for preparing salts formed by neodymium and organic acids that are used as components on preparing metal-chelating catalysts. Method for preparing neodymium organic salts from neodymium oxide and carboxylic acid involves conversion of neodymium oxide to a water-soluble salt by heating at temperature 50-150°C with inorganic ammonium salt aqueous solution with simultaneous distillation of water and ammonia. Then carboxylic acid is converted to water-soluble ammonium salt by mixing with distilled ammonia and water. In mixing prepared aqueous solutions of inorganic neodymium salt with organic ammonium salt the neodymium organic salt and inorganic ammonium salt aqueous solution are prepared. After isolation of the end neodymium organic salt an aqueous solution of ammonium inorganic salt is recirculated to the process. Method for preparing neodymium organic salts from neodymium oxide and carboxylic acids (variant) involves conversion of neodymium oxide to water-soluble inorganic salt by heating at temperature 50-150°C with inorganic ammonium salt aqueous solution and with simultaneous distillation of water and ammonia. Then carboxylic acid and hydrocarbon solvent are added to neodymium inorganic salt aqueous solution followed by addition of distilled ammonia at intensive stirring. After ceasing the stirring the reaction mixture if separated for aqueous and organic layers. Aqueous layer representing inorganic ammonium salt solution is recirculated to the process and the end product is isolated from an organic layer representing neodymium organic salt solution in hydrocarbon solvent, or solution of the definite concentration is prepared. Proposed methods (variants) provides excluding consumption of additional reagents and creates conditions for wasteless production of neodymium organic salts from neodymium oxide and organic acids.

Cleaning is performed by adding to waste solution reagent containing monocarbonic acid of aromatic series or its salt, or anhydride at subsequent forming of sediment of salt of copper (II) with anion of monocarbonic acid of aromatic series.

Invention relates to the improved method for synthesis of rare-earth element carboxylates. Method involves interaction of rare-earth element oxide or oxides with carboxylic acid or mixture of carboxylic acids at increased temperature in the presence of rare-earth element salt or mixture of rare-earth elements wherein the mole ratio rare-earth element salt or mixture of rare-earth element salts : rare-earth element oxide or rare-earth element oxides is maintained as = 1:(20-150). The end substances can be used as catalysts used in polymerization of coupled dienes based on rare-earth element carboxylates and can be used in synthesis of cis-1,4-homopolymers and cis-1,4-copolymers in industry of synthetic rubbers. Method shows the simplified technology and improved ecology.