FIELD: chemistry of metalloorganic compounds, chemical technology.
SUBSTANCE: invention relates to technology for synthesis of organic compounds, in particular, to a method for synthesis of neodymium carboxylates used as catalysts in the stereospecific polymerization reaction of butadiene-1,3. Invention describes a method for synthesis of neodymium carboxylates by dosing carboxylic acid sodium salt of acid number 0.5-0.7 as a solution in sodium hydroxide at pH 9-10 to neodymium nitrate nitric acid solution at pH 0.4-0.6. The process is carried out in organic solvent under control of acid number value and pH values of solutions of the parent compounds. Proposed method provides excluding formation of by-side products and provides synthesis of stable carboxylate solutions without addition of stabilizing additives with required amount of free acid that exerts significant effect on stability and viscosity of the ready product.
EFFECT: improved method of synthesis.
2 ex
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