Showing papers on "Inorganic compound published in 1996"

X-Ray Photoconductive Nanocomposites

Abstract: The successful development of digital radiography depends, to a large extent, on the availability of suitable x-ray photoconductors. The x-ray photoconductive nanocomposites reported here combine the advantages of both inorganic and organic compounds. An inorganic compound was finely dispersed in an organic polymer. The inorganic compound, with its large x-ray absorption efficiency, functioned as the x-ray absorber, and the polymer provided good dielectric properties and ease of thin-film preparation. The preparation procedures and the x-ray photoconductive properties of a specific example, a 50 percent by weight nanocomposite of bismuth triiodide and nylon-11, are discussed in detail.

Synthesis and structure determination of new layered perovskite compounds, ALaTa2O7 and ACa2Ta3O10(A = Rb, Li)

Abstract: New layered perovskite compounds of RbLaTa2O7 and RbCa2Ta3O10, whose Rb+ ions can be ion-exchanged have been synthesized directly by a solid-state reaction. Lithium ion-exchanged compounds, LiLaTa2O7 and LiCa2Ta3O10, have also been synthesized by ion-exchange reactions of the rubidium compounds with LiNO3 molten salt. The crystal structures of these compounds have been determined by Rietveld analysis of their powder X-ray diffraction patterns. The crystal structures of these compounds are analogous to those of the corresponding niobate compounds. These compounds are new members of the Dion–Jacobson series with the general formula A[Mn– 1BnO3n+ 1](A = alkali metal), with n= 2 and 3.

Process for preparing optically active compounds

Abstract: This document describes a novel and practically excellent process for the preparation of optically active compounds, such as optically active alcohols or amines which are useful for various applications, for example, as synthetic intermediates of pharmaceuticals, liquid crystal materials, and reagents for optical resolution, wherein a hydrogen transfer type asymmetric reduction is carried out in the presence of both a transition metal complex and an optically active nitrogen compound or a transition metal complex having an optically active nitrogen compounds as an asymmetric ligand, and a hydrogen-donating organic or inorganic compound.

Prediction of heat capacities of solid inorganic salts from group contributions

Abstract: A group contribution technique is proposed to predict the coefficients in the heat capacity correlation, C p = a + bT + c/T 2 + dT 2 , for solid inorganic salts. The results from this work are compared with experimental data from the literature. The technique is shown to give good predictions for both simple and complex solid inorganic salts. Literature heat capacities for a large number (664) of solid inorganic salts covering a broad range of cations (129), anions (17), and ligands (2) have been used in regressions to obtain group contributions for the parameters in the heat capacity temperature function. A mean error of 3.18% is found when predicted values are compared with literature values for heat capacity at 298 K.

Process for preparating optically active compounds

Abstract: A novel and practically excellent process for preparing optically active compounds, such as optically active alcohols or amines, useful for various applications of, for example, synthetic intermediates of pharmaceuticals, liquid crystalline materials, and reagents for optical resolution, wherein a hydrogen transfer type asymmetric reduction is carried out in the presence of both a transition metal complex and an optically active nitrogen compound or a transition metal complex having an optically active nitrogen compound as an asymmetric ligand, and a hydrogen-donating organic or inorganic compound. Further, optically active secondary alcohols are prepared from racemic secondary alcohols or meso-diols by a hydrogen transfer oxidation.

Theoretical Studies of Si and Al Distributions in Molecules and Minerals with Eight Tetrahedrally Coordinated Atoms (T8) in Double-Four-Ring (D4R) Geometries: Octasilasesquioxanes, Gismondite, and Zeolite A

Abstract: The inorganic compound octasilasesquioxane, Si8O12H8, the mineral gismondite, CaSi2Al2O8·4H2O, and synthetic Linde zeolite A all contain structural units in which eight tetrahedrally coordinated at...

Process for preparing deuterium tagged compounds

Abstract: A process for the preparation of organic and inorganic deuterium-tagged compounds is disclosed. The process comprises heating a deuterium oxide-solution of an organic or inorganic compound, the solution having a pH of from about 10 to about 1 to a temperature and pressure so that a supercritical reaction mass forms and one or more deuterium atoms of the deuterium oxide solvent exchanges with one or more protons of the organic or inorganic compound. After cooling the reaction solution formed from the supercritical reaction, the organic or inorganic deuterium-tagged compound is separated.

Toner for developing electrostatic images and charge controlling agent

Abstract: A toner for developing an electrostatic image is formed from toner particles containing a binder resin, a colorant, and a charge-controlling agent. The charge-controlling agent comprises an aromatic oxycarboxylic acid, a metal compound of the aromatic oxycarboxylic acid, and an inorganic compound formed from an inorganic anion and an inorganic cation. The aromatic oxycarboxylic acid, the metal compound of the aromatic carboxylic acid and the inorganic anion are contained in proportions of A (wt. %), B (wt. %) and C (ppm), respectively, satisfying the following conditions: 1/99≦A/B≦20/80, and 102 ≦C. Because of the inclusion of an inorganic compound providing a sufficient amount of inorganic anion, the charge-controlling agent shows a stable charge-controlling characteristic, and the resultant toner exhibits a stable developing performance and transferability in continuous image formation in various environmental conditions.

Metallic sliding material

Abstract: A metallic sliding material including at least a support member with a sliding surface and an inorganic compound coating layer formed on the sliding surface is disclosed The sliding surface is formed from an aluminum alloy or a reinforcing material-containing aluminum alloy The inorganic compound coating layer is formed from at least one aluminum compound, and at least one phosphorus compound, and at least one member selected from the group of molybdenum compounds, tungsten compounds, and chromium compounds These compounds are present in such concentrations that molybdenum, tungsten, and chromium collectively constitute 2 to 48% by weight of the inorganic compound coating layer, aluminum constitutes 1 to 25% by weight of the inorganic compound coating layer, phosphorus constitutes 1 to 25% by weight of the inorganic compound coating layer, and the balance of the inorganic compound coating layer is oxygen and impurities

Sequential batch chemical apparatus for destruction of toxic organic compounds

Abstract: An apparatus process is provided for the destruction of a toxic organic chlorine-containing compound, especially, a chlorine- and arsenic-containing compound. The apparatus includes a main reactor into which is introduced the chlorine-containing compound, e.g., a Lewisite as a mustard gas, an oxidizing agent and a pH controlling agent, the main reactor including a hot heat exchanger and a cold heat exchanger, a source of inert blanketing gas to provide an oxidation product of the organic original chlorine-containing compound. Preferably, after completion of the oxidizing reaction, any residual oxidizing agent is catalytically decomposed. Then, the oxidation product of the original organic chlorine-containing compound, is preferably decomposed in a catalyst containing vessel at an alkaline pH, e.g., to a maximum final pH of about 11 in a liquid knockout vessel which includes a lower liquid discharge and an upper gaseous discharge connected to a vented absorber vessel to provide an inorganic compound, e.g. an inorganic arsenic-containing-compound. Such compound can easily and safely be disposed of.

Diagrammes d'equilibre des systemes d'halogenures CuY-MYn

Abstract: Phase diagrams for the series of CuY-M I Y and CuY-M II Y systems (where M I = Li, Na, K, Rb, Cs, Tl, M II = Zn, Cd, Hg, Sn, Pb and Y = Cl, Br, I) were compared. Changes and trends accompanying the increase of charge of the second cation were discussed.

Color ink composition

Abstract: PROBLEM TO BE SOLVED: To provide a color ink composition which constitutes a color ink showing beautiful and stable monochromatic color tone without the use of a dye or a pigment and is advantageous in that it has improved capability of preventing itself from being counterfeited, by forming a thin multilayer film in which each layer has a refractive index different from that of another layer, on the surface of a powder particle. SOLUTION: This color ink composition comprises a dispersing medium for use in an ink and, dispersed therein, a powder which has a structure wherein a core particle is coated with a multilayer film and generates a color through the interference of light waves caused by the multilayer film, and also emits a radiation showing a specific peak outside the visible region which is produced by interference and reflection of lights. As the core particle, a powder can be used which has a variety of properties such as magnetism, ferroelectricity and electric conductivity. As a material of such a particle, a wide range of substances such as a metal, a metal compound, an organic compound and an inorganic compound. It is desirable that a material of the film be arbitrarily selected from among an inorganic metal compound, a metal or an alloy and an organic compound.

Method for synthesis of linear inorganic-organic hybrid polymers

Abstract: A method of preparing a linear inorganic-organic hybrid polymer includes the steps of cooling a reaction medium to a first starting temperature below the ambient temperature and not less than about -10° C, adding n-butyllithium and an organic compound capable of reacting with n-butyllithium to form an organo-dilithium compound to the reaction medium, allowing the organic compound and the n-butyllithium to react to form an organo-dilithium compound while allowing the reaction medium to warm, cooling the reaction medium to a second starting temperature below the ambient temperature and not less than about -10° C, adding an inorganic compound containing at least two halogen atoms and capable of reacting with said organo-dilithium compound to form a linear inorganic-organic hybrid polymer to the reaction medium, and allowing the inorganic compound to react with the organo-dilithium compound to form a linear inorganic-organic hybrid polymer while allowing the reaction medium to warm to the ambient temperature The cooling to the first and second starting temperatures may be accomplished by any method known in the art for cooling a reaction medium, for example by cooling with an ice water or salt/ice water bath or by cooling with an automated cooling or refrigerating system

Production of silicon-phosphorus containing compositions

Abstract: A mixture of silicon and phosphorus are heated and reacted with halide to produce silicon tetrahalides, silicon-phosphorus halide and phosphorus trihalides compositions. These compositions are reacted with any suitable organic, inorganic-organic and/or inorganic compound to produce novel organic silicon-phosphorus containing compositions. These compositions may be utilized as flame retardants, coating agents, adhesives and many other uses.

Sliding material and methods of producing same

Abstract: A metallic sliding material having excellent seizing resistance and abrasion resistance include an inorganic compound coating layer formed on a aluminum alloy layer, which may be reinforced by ceramic fibers or particles, of a support member, and including at least one selected from molybdenum compounds, tungsten compounds and chromium compounds in an amount of 2 to 70% by weight in terms of the metals, optionally an aluminum compound and a phosphorus compound, and the balance consisting of oxygen. The inorganic compound coating layer can be formed by a chemical conversion treatment method or an electrolytic treatment method wherein the sliding surface serves as a cathode.

Raw material for o/w-type emulsion

Abstract: PURPOSE: To acquire good evaluation in terms of the function of cosmetics and to obtain a stable O/W-type emulsion by dispersing forcibly a plate-shaped inorganic compound and a polar organic substance. CONSTITUTION: A raw material for cosmetics to prepare an O/W-type emulsion with good function, stability, and safety is prepared by blending and dispersing forcibly a plate-shaped inorganic compound and a polar organic substance. A plate-shaped inorganic compound which has a layer structure and a swelling property is most suitable, and for example, smectite, mica, hectorite, montmorillonite, saponite, etc., are used. A water soluble polymer is used as the polar organic substance, and for example, polyethylene oxide such as polyethylene glycol, hyaluronic acid ester, chondroitin sulfate, polyvinyl alcohol, polyvinyl pyrolidone, etc., are used.

Inorganic compound containing composite material

Abstract: Composites, and a method for preparing composites, are provided. The composites comprise a plurality of domains on the surface(s) of a support material, and the domains contain one or more inorganic compounds. The method comprises contacting a support material with one or more metal-loaded polymers and removing the polymer(s).