Electrochemical halogenation of 4-hydroximino-2,2,6,6-tetramethylpiperidine

Electrochemical chlorination and bromination of 4-hydroximino-2,2,6,6-tetramethylpiperidine were studied.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 11, 2004, pp. 1808–1810.Original Russian Text Copyright © 2004 by Kashparova, Kagan, Zhukova.     

Specific features of vulcanization of unsaturated rubbers with polymeric <Emphasis Type="Italic">p</Emphasis>-dinitrosobenzene

Conditions of vulcanization of unsaturated rubbers were studied.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 10, 2004, pp. 1722–1724.Original Russian Text Copyright ¢ 2004 by Zaikov, Klyuchnikov, Makarov, Deberdeev.     

Nucleophilic substitution of chlorine with hydrazine and methylhydrazine in chlorinated pyridazines and pyridazones

The reactions of methylhydrazine and hydrazine hydrate with chlorinated pyridazines and pyridazones were studied.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 12, 2004, pp. 2021–2024.Original Russian Text Copyright © 2004 by Baranov, Tsypin, Malin, Laskin.     

Synthesis of substituted ureas from urea and halohydrins

Substituted ureas were prepared by reactions of 1,2-halohydrins with urea and were tested as antimicrobial additives to motor oils.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 10, 2004, pp. 1681–1683.Original Russian Text Copyright © 2004 by Magerramov, Abdinbekova, Kurbanova, Zamanova, Allakhverdiev.     

Hydrated cobalt(II) and nickel(II) ammine diphosphates isolated from aqueous solutions

Hydrated amorphous cobalt and nickel(II) ammine diphosphates were prepared.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 9, 2004, pp. 1421–1424.Original Russian Text Copyright © 2004 by Voitenko, Zhilyak, Kopilevich.     

Surface tension and density of a sodium hydroxide melt

The surface tension and density of a sodium hydroxide melt were determined experimentally in a wide temperature range.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 12, 2004, pp. 2054–2055.Original Russian Text Copyright © 2004 by Patrov, Yurkinskii.     

Distribution coefficients of phenol between water and hydrocarbons at 283–328 K

Distribution of phenol between aqueous and organic phases at maximal dilution in the range 283–328 K was studied chromatographically. Ten systems containing saturated and aromatic hydrocarbons were examined.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 11, 2004, pp. 1768–1771.Original Russian Text Copyright © 2004 by Dobryakova, Dobryakov.     

A procedure for preparing <Emphasis Type="Italic">N</Emphasis>-hydroxyethyl-substituted succinimide and phthalimide

Conditions of synthesis of N-hydroxyethyl-substituted succinimide and phthalimide by reactions of dicarboxylic acid imides with aminoethanol were optimized.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 12, 2004, pp. 2059–2060.Original Russian Text Copyright © 2004 by Gasanov, Allakhverdiev.     

Synthesis of di(polyfluoroalkyl) ethers

New procedures for preparing di(polyfluoroalkyl) ethers by reactions of polyfluoropropyl chlorosulfonites with polyfluorinated alcohols were tested.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 9, 2004, pp. 1573–1574.Original Russian Text Copyright © 2004 by Rakhimov, Nalesnaya, Vostrikova.     

Synthesis of bis-octaethylporphyrin cyclophane derivatives

Using (5-ethynyloctaethylporphyrinato)nickel(II) as starting compound, new cyclophane derivatives possessing two porphyrin fragments were synthesized, and their spectral properties were studied.__________Translated from Zhurnal Organicheskoi Khimii, Vol. 40, No. 12, 2004, pp. 1866–1869.Original Russian Text Copyright © 2004 by Mamardashvili, Surov, Pognon, Weiss.     

Use of thermally expanded graphite in water-purification and water-treatment systems

The adsorption and ion-exchange properties of thermally expanded graphite with respect to hardness cations and SO ₄ ^2– and Cl^– anions were studied.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 11, 2004, pp. 1833–1835.Original Russian Text Copyright © 2004 by Yakovlev, Finaenov, Yakovleva, Finaenova.     

Synthesis of vinylsulfonyl(halo)pyridines and their reactions with binucleophilic reagents

Oxidation of vinylthio(halo)pyridines with 30–33% hydrogen peroxide solution in acetic anhydride at 20–25°C furnished vinylsulfonyl(halo)pyridines. Nucleophilic addition reactions of 2-amino-1-ethanethio hydrochloride and thiosemicarbazide to the multiple bonds of vinylsulfonyl(halo)pyridines were performed.Translated from Zhurnal Organicheskoi Khimii, Vol. 40, No. 11, 2004, pp. 1705–1708.Original Russian Text Copyright © 2004 by Amosova, Gavrilova.     

Kinetic relationships in synthesis of dimethoxymethane

The kinetics of formation of dimethoxymethane by acetalization of formaldehyde with methanol, catalyzed by silicotungstic heteropoly acid, were studied.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 12, 2004, pp. 2018–2020.Original Russian Text Copyright © 2004 by Danov, Kolesnikov, Logutov.     

Sorption of gold(III) ions from hydrochloric acid solutions by aminated shungite

Sorption of gold ions by aminated shungite from chloride solutions was studied. The effects of the solution pH and process duration on the degree of recovery were considered.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 11, 2004, pp. 1772–1774.Original Russian Text Copyright © 2004 by Akimbaeva, Ergozhin.     

Extaction of lanthanide (III) nitrates from aqueous solutions with <Emphasis Type="Italic">n</Emphasis>-octanol

Extraction of lanthanide(III) nitrates (Ln-Gd) with n-octanol was studied at 298.15 K. The extraction isotherms were obtained and mathematically treated.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 9, 2004, pp. 1571–1572.Original Russian Text Copyright © 2004 by Keskinov, Kudrova, Valueva, Pyartman.     

Influence of molecular weight of polyacrylic acid on the rate of copper dissolution

The weight of polyacrylic acid adsorbed on copper from an aqueous solution and the rate of copper dissolution in the presence of hydrogen peroxide as functions of molecular weight of the polymer were studied.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 8, 2004, pp. 1374–1377.Original Russian Text Copyright © 2004 by Kislenko, Verlinskaya.     

Synthesis of new liquid crystalline compounds containing a β-hydroxyketone fragment in the side chain

Liquid crystalline benzoates with a smectic meso phase were synthesized on the basis of 3-hydroxy-1-(4-hydroxyphenyl)-1-octanone by esterification of 4-alkoxybenzoic acids.Translated from Zhurnal Organicheskoi Khimii, Vol. 40, No. 9, 2004, pp. 1344–1348.Original Russian Text Copyright © 2004 by Bezborodov, Kovganko.     

Measurements of the density and viscosity of binary mixtures of (hyper-branched polymer,B-H2004 + 1-butanol,or 1-hexanol,or 1-octanol,or methyl tert-butyl ether)

Density and viscosity were determined for binary mixtures of {hyper-branched polymer, Boltorn H2004 (B-H2004) + 1-alcohol (1-butanol, 1-hexanol, and 1-octanol)} at T = (298.15, 308.15, 318.15, 328.15, and 338.15) K and of {B-H2004 + methyl tert-butyl ether (MTBE)} at T = (298.15, 308.15, and 318.15) K and ambient pressure. The temperature dependence of density and viscosity is described by linear regression and by the Vogel–Fucher–Tammann equation, respectively. Excess volumes for the system {B-H2004 + MTBE} are presented as a function of mass fraction. Viscosity deviations were calculated and correlated by the Redlich–Kister polynomial expansions using also the mass fractions. The polynomial correlations describe the variation of viscosity with composition. A qualitative discussion on these quantities in terms of molecular interactions is reported.     

Radical polymerization of the quinone derived from monoethanolamine vinyl ether and chloranil

Radical polymerization of the quinone derived from monoethanolamine vinyl ether and 2,3,5,6-tetrachloro-1,4-benzoquinone (chloranil) was studied by classical polarography. The conditions of preparation of the redox polymer were optimized. The kinetic characteristics of the process were calculated.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 8, 2004, pp. 1389–1391.Original Russian Text Copyright © 2004 by Ergozhin, Mukhitdinova, Shoinbekova, Nikitina, Zhunusova.     

Preparation of α-Fe<Subscript>2</Subscript>O<Subscript>3</Subscript> by thermal hydrolysis of iron(III) basic sulfate

Features of the hydrolytic transformation of iron(III) basic sulfate under hydrothermal conditions at 140–200°C were studied. The influence of the conditions of the hydrothermal treatment of iron(III) basic sulfate on the rate and degree of its hydrolysis was examined. The chemical and phase composition of metastable intermediates was ascertained, and conditions for the formation of the final product of thermal hydrolysis, hematite of high phase purity, were determined.Translated from Zhurnal Prikladnoi Khimii, Vol. 77, No. 9, 2004, pp. 1416–1420.Original Russian Text Copyright © 2004 by Eshchenko, Salonikov.