摘要:
Provided is a method for production of adamantanes, in which, when a tricyclic saturated hydrocarbon compound having 10 or more carbon atoms is isomerized in the presence of a solid catalyst to give adamantanes, no solid matter derived from an oxygen-containing compound is formed or accumulated in the inlet or the bottom of an isomerization reactor by providing a pre-reactor in an isomerization step even if the oxygen-containing compound is present in a raw material to be supplied.
摘要:
A wiring pattern inspection apparatus comprises a light source, a parallel light guiding section which guides light from the light source substantially in parallel, and a light extraction section which extracts a transverse wave light component crossing the light guiding direction at right angles from the light guided by the parallel light guiding section and which converts the transverse wave light component into a specific polarized component and which irradiates a work with the specific polarized component and which extracts a vertical wave light component from reflected light obtained by reflecting the emitted specific polarized component by the work.
摘要:
An industrially advantageous process for producing adamantane by which high-purity adamantane reduced in coloration is efficiently produced while minimizing the loss. The process, which is for producing adamantane by isomerizing trimethylenenorbornane, includes (A) a reaction step of isomerizing the starting material, (B) a concentration step of concentrating the adamantane contained in the resultant liquid reaction mixture, (C) a crystallization step of precipitating the concentrated adamantane, (D) a solid-liquid separation step of separating the adamantane crystals from the slurry resulting from the crystallization, (E) a washing step of washing the isolated adamantane crystals, and (F) a drying step of drying the adamantane crystals washed, characterized in that the mass ratio of the endo-trimethylenenorbornane to the adamantane each contained in the materials to be subjected to the crystallization step (C) (endo-trimethylenenorbornane/adamantane) is 0.25 or lower.
摘要:
A half cut portion is provided with a receiving base for receiving a tube, and a cutter for cutting the tube. The receiving base is provided with a stroke adjusting lever on an upper portion of the receiving base, and the stroke adjusting lever is provided with a cam face in which an amount of projecting is varied by being rotated. The cutter butts to the cam face and a depth of a half cut is set according to a displacement of the amount of projecting of the cam face from the receiving base.
摘要:
An industrially advantageous process for producing adamantane by which high-purity adamantane reduced in coloration is efficiently produced while minimizing the loss. The process, which is for producing adamantane by isomerizing trimethylenenorbornane, includes (A) a reaction step of isomerizing the starting material, (B) a concentration step of concentrating the adamantane contained in the resultant liquid reaction mixture, (C) a crystallization step of precipitating the concentrated adamantane, (D) a solid-liquid separation step of separating the adamantane crystals from the slurry resulting from the crystallization, (E) a washing step of washing the isolated adamantane crystals, and (F) a drying step of drying the adamantane crystals washed, characterized in that the mass ratio of the endo-trimethylenenorbornane to the adamantane each contained in the materials to be subjected to the crystallization step (C) (endo-trimethylenenorbornane/adamantane) is 0.25 or lower.
摘要:
A display apparatus allowing observation of the abnormal state of control target equipment is provided. A process performed by a control unit of the display apparatus capable of reproducing a moving image includes the steps of: receiving an input of an analog video signal; converting the video signal to a digital signal; reading time data; generating video data including the time data and the digital signal in relation with each other; and storing the video data in a video data storing unit.
摘要:
The present invention provides a process of an industrially advantageous production of high-purity adamantane at a low cost and with a high efficiency by isomerizing trimethylenenorbornane contained in a raffinate obtained from a platfinate.
摘要:
A silicon single crystal rod (24) is pulled from a silicon melt (13) molten by a heater (17), and a change in diameter of the silicon single crystal rod every predetermined time is fed back to a pulling speed of the silicon single crystal rod and a temperature of the heater, thereby controlling a diameter of the silicon single crystal rod. A PID control in which a PID constant is changed on a plurality of stages is applied to a method which controls the pulling speed of the silicon single crystal rod so that the silicon single crystal rod has a target diameter and a method which controls a heater temperature so that the silicon single crystal rod has the target temperature. A set pulling speed for the silicon single crystal rod is set so that V/G becomes constant, and an actual pulling speed is accurately controlled so as to match with the set pulling speed, thereby suppressing a fluctuation in diameter of the single crystal rod.
摘要:
According to the present invention, there is provided a process for producing adamantanes by isomerizing a tricyclic saturated hydrocarbon compound having 10 or more carbon atoms, comprising (A) a reaction step for isomerizing a raw material, (B) a concentration step for concentrating the adamantanes in a reaction product liquid, (C) a crystallization step for crystallizing the concentrated adamantanes, (D) a solid-liquid separation step for separating the crystallized adamantanes from slurry having precipitated crystals, (E) a washing step for washing the crystal of adamantanes obtained by the solid-liquid separation step, and (F) a drying step for drying the washed crystals of adamantanes. According to the present invention, there is provided a process for producing adamantanes by using a solid catalyst, wherein the obtained adamantanes are purified by a crystallization operation. There is provided a process for producing adamantanes by isomerizing a tricyclic saturated hydrocarbon compound, wherein the obtained adamantanes are washed by a washing solvent after separating the adamantanes by a crystallization step and a solid-liquid separation step. There is provided a process for producing adamantanes by isomerizing a tricyclic saturated hydrocarbon compound, wherein the crystal of the adamantanes which contains a liquid fraction in the range from 5 to 50% by mass is dried.