Structure and acid-basic properties of the surface of titanium oxides...
AbstractThe data of temperature-programmed desorption of ammonia from the surface of oxide systems and IR spectroscopy were used to demonstrate that the strength of the surface acid sites in titanium...
View ArticleCyclophosphites from Oligomethylenephenols
AbstractNew types of oligomethylenephenol cyclophosphites containing 1-3 phosphorus atoms are synthesized by reactions of available oligomethylenephenols with phosphorous acid amides. Contrary to their...
View ArticlePoly(phosphoramidites)-Polycondensation Products of Phosphorous Triamides...
AbstractPhosphorous triamides react with aliphatic diols and dibasic phenols: 1,6-hexanediol, 2,2'-(4-hydroxyphenyl)propane, 1,4-hydroquinone, and 4,4'-dihydroxybiphenyl in the temperature range...
View ArticleStudy of the initial stages of alkoxo synthesis involving Ti(OBu) 4 and...
AbstractThe reactivities of cyclophosphite precursors in alkoxo syntheses involving titanium(iv) tetra(n-butoxide) were studied by 31P NMR and IR spectroscopy....
View ArticleUnusual behavior of o , o "-dimethylene(tri- p -cresyl) bicyclophosphite...
AbstractA representative of the new class of organophosphorus ligands, viz., o,o"-dimethylene(tri-p-cresyl) bicyclophosphite (BCP), was studied as a promoter of Rh(acac)(CO)2 in hydrogenation and...
View ArticleLaser Desorption Ionization of Arylene Phenylphosphonites Formed by...
AbstractStep high-temperature condensation of dihydric phenols [1,4-dihydroxybenzene, 4,4′-dihydroxybiphenyl, and 2,2′-bis(4-hydroxyphenyl)propane] with phenylphosphonous bis(diethylamide) is carried...
View ArticleSonochemical activation of condensing phosphorylation of bifunctional...
AbstractCondensing phosphorylation of 1,6-hexanediol, 1,4-dihydroxybenzene, 4,4′-dihydroxybiphenyl, and 2,2-bis(4′-hydroxyphenyl)propane by phenylphosphonous acid tetraethylamide was effected by...
View ArticleFeatures of condensation of 4,4′-Dihydroxybiphenyl with phenylphosphonous...
Abstract4,4′-Dihydroxybiphenyl was condensed with phenylphosphonous tetraethyldiamide. The moleccular mass, chemical composition, and structural features of the product, oligo(4,4′-biphenylene...
View ArticleSynthesis of metal complexes of polyalkylene(arylene) phosphorous amides
AbstractReactions of phosphorous triamides with symmetrical diols in equimolar ratio were studied. These reactions result in formation of unique poly(oligo)amidophosphorous systems. The products...
View ArticleA new technology of wood cavitation
AbstractWood residue crumbling with a rotary-pulse device is considered. Structural analysis of the resulting materials is carried out.
View ArticleOxidation of phenylphosphonites with aqueous hydrogen peroxide
AbstractAn effective route to the oxidation of organic derivatives of trivalent phosphorus with an aqueous solution of hydrogen peroxide was considered. Phenylphosphonites, including those having a...
View ArticleHydroxyapatite Biocomposites for Medical Use
New technological approaches based on biocompatible nanocomposites with hydroxyapatite (HA) and collagen matrix are described. Optimal conditions of HA synthesis in collagen fibers and its use in bone...
View ArticleA Composite Material Based on Poly(2-hydroxyethyl methacrylate) with...
An organo-mineral composite bone-grafting material was developed and tested. The composite material is based on synthetic hydroxyapatite (HAP) (30-60 wt%) integrated into the matrix of...
View ArticleHydroxyapatite for Filling Bone Tissue Defects
Hydroxyapatite was synthesized in conditions of mechanoacoustic treatment of an aqueous reaction mixture consisting of ammonium hydrogen phosphate and calcium nitrate using a commercially available...
View ArticleSynthesis of Calcium Phosphate Polymer Compositions by Mechano-Acoustic...
AbstractThis work deals with the problem of synthesis and investigation of the structure and properties of polymer calcium phosphate biopolymer suspensions, their use to obtain film samples containing...
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