摘要:
A rational technical process for producing dialkylnaphthalenes from petroleum-derived starting materials which exist in abundance is established. The process for producing dialkylnaphthalenes contains the steps (1), (2), (3), and (4): (1) 1st step which is for catalytically hydrodealkylating a stock oil containing a substantial amount of naphthalene and/or alkylnapthalenes, separating a product oil form a product gas, and separating and recovering a fraction composed mainly of naphthalene and/or methylnaphthalene from the product oil; (2) 2nd step which is for catalytically alkylating or catalytically transalkylating the fraction, recovered in the 1st step, composed mainly of naphthalene and/or methylnaphthalene directly without pretreatment for purification, with an alkylating agent or transalkylating agent to prepare alkylnaphthalenes; (3) 3rd step which is for separating and recovering dialkylnaphthalenes from the alkylnaphthalenes obtained in the 2nd step; and (4) 4th step which is for returning at least a part of the residual fraction, after the separation and recovery of dialkylnaphthalenes in the 3rd step, as at least a part of the stock oil in the 1st step and/or at least part of the alkylating agent or transalkylating agent in the 2nd step to the corresponding step.
摘要:
An electric leakage detection apparatus may quickly detect an electric leakage. An electric leakage detection apparatus includes a pulse generator that supplies a pulse to a coupling capacitor, a voltage detector that detects a voltage at the coupling capacitor, an electric leakage determination unit that compares the voltage detected by the voltage detector to a first threshold and determines presence or absence of the electric leakage of a DC power supply based on a comparison result. The electric leakage detection apparatus also includes a discharge determination unit that compares the voltage detected by the voltage detector to a second threshold lower than the first threshold and determines whether the detection voltage becomes lower than the second threshold by a discharge of the coupling capacitor. The pulse generator generates a new pulse when the discharge determination unit determines that the detection voltage becomes lower than the second threshold.
摘要:
A photo detection device, which is disposed in a vehicle, includes a first photo detection element that detects light and a first signal processing unit that performs a predetermined process based on a detection result of the first photo detection element. The photo detection device also includes a first board on which the first photo detection element is mounted and a second board on which the first signal processing unit is mounted. Additionally, the photo detection device includes a holding member that holds the first board and the second board and a housing that accommodates the holding member. The holding member holds the first board and the second board such that the second board is arranged in a second plane different from a first plane in which the first board is arranged.
摘要:
The present invention provides a method for producing a carbon material for an electric double layer capacitor, having a low internal resistance and a high capacitance per unit volume. The method comprises activating a graphitizable carbon material used as the raw material with 3 or more alkali metal compounds to produce an activated carbon having a BET specific surface area of 1500 to 3000 m2/g and a pore diameter corresponding to the maximum value in the pore size distribution as determined by the MP method within the range of 1 to 2 nm.
摘要:
The present invention provides a raw oil composition for manufacturing a carbon material for electric double layer capacitor electrodes, characterized in that the raw oil composition comprises 25 wt % or more of a saturated component and 16 wt % or less of an asphaltene component among the saturated component, an aromatic component, a resin component, and the asphaltene component obtained by developing of the raw oil composition by thin-layer chromatography; the raw oil composition has an average molecular weight of 960 or less; and the raw oil composition has an aromatic-carbon-fraction (fa) of 0.22 to 0.72. Use of the raw oil composition provides a carbon material for electric double layer capacitor electrodes that can exhibit high capacitance with high reproducibility without manufacturing synthetic pitch.
摘要:
A technique for achieving a risk-free keyless entry system for vehicles at low costs is disclosed. The keyless entry system includes a transmitter responsive to an operation of an operation unit for transmitting a signal indicative of to-be-sent information toward an on-board device at a prespecified communication rate. The on-board device is attached to inside of a vehicle, for receiving electrical waves as sent from the transmitter and for outputting a control signal used to drive electric motors of door lock actuators and/or a motor of slide door actuator. By changing the communication rate of the signal being sent from the transmitter, the door lock control signal is made shorter in arrival distance than the slide door control signal.
摘要:
Communication with less noise is to be performed. A voltage value control signal functioning as an instruction to change the voltage value supplied from a voltage converting section to an LFI is output from a CPU. A driving section for the LFI outputs the control signal at 125 kHz that drives an FET circuit section according to the voltage value supplied from an ECU. The FET circuit section outputs the driving current for an antenna under the control of the driving section. A connecter terminal that connects to a harness is connected to a connecter terminal for GND connection along with the GND terminal of the voltage converting section. A connecter terminal that connects to a harness is connected to a connecter terminal for GND connection along with the GND terminal of the FET circuit section.
摘要:
The present invention provides a raw oil composition for manufacturing a carbon material for electric double layer capacitor electrodes, characterized in that the raw oil composition comprises 25 wt % or more of a saturated component and 16 wt % or less of an asphaltene component among the saturated component, an aromatic component, a resin component, and the asphaltene component obtained by developing of the raw oil composition by thin-layer chromatography; the raw oil composition has an average molecular weight of 960 or less; and the raw oil composition has an aromatic-carbon-fraction (fa) of 0.22 to 0.72. Use of the raw oil composition provides a carbon material for electric double layer capacitor electrodes that can exhibit high capacitance with high reproducibility without manufacturing synthetic pitch.
摘要:
The present invention provides polypropylene made by dispersing at least one, cracking-resistant polymer therein for controlled rheology treatment to yield a polypropylene polymer with a high melt flow rate and good molding characteristics.
摘要:
The present invention provides polypropylene films and methods of making these films using high melt strength &bgr;-crystalline polypropylene. The films of the present invention are opaque, porous and have good physical properties, such as being capable of cold drawing to a thin gauge without breaking.