摘要:
A process for purifying crude p-aminophenol which contains 4,4'-diaminodiphenyl ether and other impurities, which process comprising adding an alkali metal compound to the crude p-aminophenol in an aqueous medium in an atmosphere of an inert gas and, if necessary, in the presence of a reducing agent to give an aqueous solution of an alkali metal salt of p-aminophenol, and contacting the aqueous solution with an inert organic solvent immiscible with water to permit 4,4'-diaminodiphenyl ether and other impurities to be separated by extraction in the solvent.
摘要:
Aromatic urethanes can be produced in exceedingly improved yield when an aromatic nitro compound, an organic compound containing hydroxyl groups, and carbon monoxide are reacted in the presence of a catalyst composed of metallic (elemental) selenium or a selenium compound and a base serving as promoter, to which reaction system an aromatic amino compound and/or an aromatic urea compound which will be secondarily produced by the reaction has been previously added in order to suppress side reactions. For instance, when nitrobenzene, methanol and carbon monoxide are interacted in the presence of metallic selenium and triethylenediamine, the conversion of nitrobenzene is 68% and the percentage of formed methyl N-phenylcarbamate to the interacted nitrobenzene is 80%, whereas when the reaction is effected under the same reaction conditions indicated above with addition to the reaction system of aniline in an amount of about 15 wt. % of the nitrobenzene, the conversion of nitrobenzene and the percentage of formed methyl N-phenylcarbamate reach 100% and 98%, respectively.
摘要:
A device for forming a deposited film is provided. It comprises (a) a reaction chamber; (b) a heating means for heating a substrate placed in the reaction chamber; (c) a starting gas introducing means for introducing starting gases into the reaction chamber, the gas introducing means having a means for introducing two or more kinds of gases alternately and intermittently into the reaction chamber; (d) a decomposing means for decomposing the starting gases in the reaction chamber so as to form a deposited film on the substrate heated by said heating means in the reaction chamber, the decomposing means having a light source which irradiates at least one kind of light into the reaction chamber to decompose the starting gases.
摘要:
A device for forming a deposited film is provided. It comprises (a) a reaction chamber; (b) a heating means for heating a substrate placed in the reaction chamber; (c) a starting gas introducing means for introducing starting gases into the reaction chamber, the gas introducing means having a means for introducing two or more kinds of gases alternately and intermittently into the reaction chamber; (d) a decomposing means for decomposing the starting gases in the reaction chamber so as to form a deposited film on the substrate heated by said heating means in the reaction chamber, the decomposing means having a light source which irradiates at least one kind of light into the reaction chamber to decompose the starting gases.
摘要:
A process for forming a deposited film comprises the steps of:(a) arranging previously a substrate for formation of a deposited film in a film forming space;(b) forming a deposited film on said substrate by introducing an activated species (A) formed by decomposition of a compound (SX) containing silicon and a halogen and an activated species (B) formed from a chemical substance (B) for film formation which is chemically mutually reactive with said activated species (A) separately from each other into said film forming space to effect chemical reaction therebetween; and(c) exposing the deposited film growth surface to a gaseous substance (E) having etching action on the deposited film to be formed during the film forming step (b) to apply etching action on the deposited film growth surface, thereby effecting preferentially crystal growth in a specific face direction.
摘要:
A method of producing a thin film field effect transistor. An insulating thin film layer is formed on a gate electrode subsequent to the gate electrode being formed on a substrate. A multilayer structure is formed on the insulating thin film layer subsequent to the insulating thin film layer being formed on the gate electrode by alternately laminating a number of non-monocrystalline semiconductor material layers and a number of non-monocrystalline material layers.
摘要:
An electrophotographic image forming member comprises a substrate and a photoconductive layer overlying the substrate and composed of a hydrogenated amorphous silicon containing 0.001-1000 atomic ppm of carbon as an impurity based on silicon.
摘要:
A display method comprises applying electrical energy to a display layer formed of a monomolecular film or a monomolecular-layer built-up film of a clathrate complex compound composed of a host molecule having a hydrophilic portion, a hydrophobic portion and a portion to enclose a guest molecule, and a guest molecule on a substrate, thereby making a display.The display may be made by color-forming or light emitting due to reduction of the guest molecules.
摘要:
A film forming method, a recording medium formed thereby, and a recording method therewith are provided. The recording medium comprises a recording layer constituted of a monomolecular film or monomolecular-layer built-up film of a clathrate complex compound comprised of a host molecule and a guest molecule, said host molecule having a hydrophilic portion, a hydrophobic portion, and a portion capable of enclosing said guest molecule.