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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...

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Cyclophosphites 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...

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Poly(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...

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Study 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....

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Unusual 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...

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Laser 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...

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Sonochemical 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...

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Features 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...

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Features of phenolysis of phenylphosphonous acid tetraethydiamide

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Linear oligoalkylene(arylene) phosphoramidites. Rhodium(I) complexes

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Synthesis 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...

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Electron spin resonance study of the cavitated larch wood

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Novel composite materials based on cavitated wood

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A new technology of wood cavitation

AbstractWood residue crumbling with a rotary-pulse device is considered. Structural analysis of the resulting materials is carried out.

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A new approach to the design of antioxidants derived from...

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Oxidation 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...

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Hydroxyapatite 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...

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A 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...

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Hydroxyapatite 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...

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Synthesis 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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