摘要:
An aromatic urethane is obtained at high yield without involving corrosion of a stainless steel reactor by interacting an aromatic nitro compound, an organic compound having at least one hydroxyl group therein and carbon monoxide in the presence of a catalyst composed of (1) palladium, ruthenium, rhodium or compounds thereof, (2) a Lewis acid, and (3) a tertiary amine. For instance, 2,4-dinitrotoluene, ethanol and carbon monoxide placed in a SUS-32 reactor are interacted in the presence of a catalyst composed of (1) 5% palladium on carbon, (2) ferric chloride, and (3) pyridine to obtain 2,4-diethyldicarbamatetoluene without corrosion of the reactor. After completion of the reaction, the catalyst and reaction product are separated from the reaction system; e.g., the insoluble catalyst is first separated and then the reaction solution is cooled down, e.g., to room temperature, to separate the reaction product as crystals, followed by separation of the crystals by filtration. Then, the reaction may be repeated by adding fresh 2,4-dinitrotoluene and ethanol and the separated catalyst to the resultant fitrate under pressurized conditions of a carbon monoxide atmosphere. By repeating the reaction in this manner, 2,4-diethyldicarbamatetoluene with a purity of 98% can be obtained at a yield of 90%.
摘要:
An electrophotographic process is conducted by charging a cylindrical photosensitive member having a photoconductive layer of amorphous silicon containing 10 to 40 atomic % hydrogen; imagewise exposing the member to form an electrostatic latent image; developing the latent image to form a toner image; transferring the toner image to an image receiving sheet and thereafter cleaning the surface of the cylindrical member with a cleaning blade.
摘要:
A method for forming a deposited film comprises the step of introducing a starting material (A) which is either one of a gaseous starting material for formation of a deposited film and a gaseous halogenic oxidizing agent having the property of oxidative action on said starting material into a film forming space in which a substrate having a material which becomes crystal neclei for a deposited film to be formed or a material capable of forming crystal nuclei selectively scatteringly on its surface is previously arranged to have said starting material (A) adsorbed onto the surface of said substrate to form an adsorbed layer (I) and the step of introducing a starting material (B) which is the other one into said film forming space, thereby causing surface reaction on said adsorption layer (I) to form a crystalline deposited film (I).
摘要:
An image-forming member for electro-photography has a photoconductive layer comprising a hydrogenated amorphous semiconductor composed of silicon and/or germanium as a matrix and at least one chemical modifier such as carbon, nitrogen and oxygen contained in the matrix.
摘要:
A cantilever type displacement element comprises a piezoelectric layer and at least two electrodes for applying a voltage to said piezoelectric layer, at least one of said electrodes being a comb-shaped electrode pair having respectively comb-tooth portions disposed separately as facing and alongside of each other in the width direction of the cantilever.
摘要:
An angular acceleration sensor has a weight member, a resilient member for supporting the weight member from the both sides thereof, the resilient member being disposed on a predetermined rotational axis and supporting the weight member for rotation about the rotational axis, and an opposed member opposed to the weight member, an angular acceleration applied to the weight member being detected from a variation in the spacing between the opposed member and the weight member resulting from the rotation of the weight member
摘要:
A cantilever type probe comprising a piezoelectric bimorph cantilever containing a piezoelectric material provided between driving electrodes for driving a cantilever, a probe formed thereon and a drawing electrode for a probe provided along the surface where a probe is formed, wherein there is provided a shielding electrode for electrically isolating the probe and the drawing electrode from the driving electrodes.
摘要:
A light emitting device has a luminescent layer having at least two layers of a non-single crystalline material containing silicon atoms, carbon atoms and hydrogen atoms laminated and having a homojunction, and at least a pair of electrodes connected electrically to said luminescent layer, the non-single crystalline silicon layer having an optical band gap of 2.0 eV or higher and a localized level density at mid-gap of 5.times.10.sup.16 cm.sup.-3 .multidot.eV.sup.-1 or less.
摘要:
A method for forming deposited film, which comprises effecting a step [A] and another step [B] at least one time, the step [A] being the introduction of a starting material (A) which is either one of a gaseous starting material (I) for formation of a deposited film and a gaseous halogenic oxidizing agent (II) having the property of oxidative action on said starting material into a film forming space in which a substrate of which at least the surface to be filmed thereon has crystal orientability is previously arranged to have said starting material adsorbed onto the surface of said substrate to form an adsorbed layer (I) and the step [B] being the introduction of the other starting material (B) into said film forming space, thereby causing the surface reaction on said adsorption layer (I) to occur and form a deposited film.
摘要:
A thin film transistor comprises a substrate, a semiconductor layer comprising a polycrystalline silicon containing 3 atomic % or less of hydrogen provided on said substrate, a source region and a drain region provided in the surface part of said semiconductor layer, an insulating layer provided on said semiconductor layer at the portion between these two regions, a gate electrode provided on said insulating layer, a source electrode forming an electrical contact with the source region and a drain electrode forming an electrical contact with the drain region, the overlapping portions between said gate electrode through the insulating layer beneath said gate electrode and the source region and between said gate electrode through the insulating layer beneath said gate electrode and the drain region begin 2000 .ANG. or less in width.