Abstract: An asymmetric diamine suitable for preparing a soluble polyimide and a method for preparing the same, including a compound represented by the following formula (1): wherein R1, R2, R3 and R4 are, independently of each other, a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 3 carbon atoms, and A and B are, independently of each other, a nitro group or an amino group. Further, a method for preparing the compound represented by the aforesaid formula (1).

Abstract: A novel asymmetric diamine, diamino-2-(benzothiazole-2-yl)diphenyl ether, derivatives therefor, and an intermediate for the compound such as aminonitro-2-(benzothiazole-2-yl)diphenyl ether, dinitro-2-(benzothiazole-2-yl)diphenyl ether, and derivatives from these. Additionally, another novel asymmetric diamine, diamino-2-(benzoxazole-2-yl)diphenyl ether, derivatives therefor, and intermediate for the compound such as aminonitro-2-(benzoxazole-2-yl)diphenyl ether, dinitro-2-(benzoxazole-2-yl)diphenyl ether, and derivatives from these, and methods for preparing them.

Abstract: A novel asymmetric diamine, diamino-2-(benzothiazole-2-yl)diphenyl ether, derivatives therefor, and an intermediate for the compound such as aminonitro-2-(benzothiazole-2-yl)diphenyl ether, dinitro-2-(benzothiazole-2-yl)diphenyl ether, and derivatives from these. Additionally, another novel asymmetric diamine, diamino-2-(benzoxazole-2-yl)diphenyl ether, derivatives therefor, and intermediate for the compound such as aminonitro-2-(benzoxazole-2-yl)diphenyl ether, dinitro-2-(benzoxazole-2-yl)diphenyl ether, and derivatives from these, and methods for preparing them.

Abstract: An asymmetric diamine suitable for preparing a soluble polyimide and a method for preparing the same, including a compound represented by the following formula (1): wherein R1, R2, R3 and R4 are, independently of each other, a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkoxy group having 1 to 3 carbon atoms, and A and B are, independently of each other, a nitro group or an amino group. Further, a method for preparing the compound represented by the aforesaid formula (1).

Abstract: The invention provides a motor-driven power steering apparatus provided with a fault diagnosing apparatus diagnosing a fault of a board temperature detecting apparatus on the basis of an armature current Im detected by a motor current detecting apparatus and a board temperature Tb of the control board detected by the board temperature detecting apparatus, and a target current suppressing apparatus suppressing a target current Iq at a time when the fault diagnosing apparatus diagnoses that the board temperature detecting apparatus is out of order.

Abstract: A motor-driven power steering apparatus is provided with a sub control system including a map memory means storing a first window time setting map M1 and a second window time setting map M2 in which a window time is set shorter, a window time setting map selecting means selecting the first window time setting map M1 at a time when a torque change amount dT and a current change amount dIm are both smaller than respective predetermined change amounts, and selecting the second window time setting map M2 in the other cases, a window time deciding means collating a point coordinate of a combination of a steering torque and a motor current with the selected window time setting map so as to decide a window time, and a motor drive stop determining means determining the motor drive stop in the case that the point coordinate exists in a region corresponding to the decided window time for the window time, and when a motor drive stop determining means determines the motor drive stop, the drive of the motor controlled so

Abstract: A motor-driven power steering apparatus is provided with a self-aligning torque computing means for computing a self-aligning torque based on of a steering angle and a vehicle speed, a friction torque computing means for computing a friction torque in accordance with a steering angle change from a steering angular velocity, an apparent steering torque computing means for computing an apparent steering torque from the friction torque and a steering torque, and a steering torque feedback control means for driving and controlling an assist motor in such a manner that a difference between the self-aligning torque and the apparent steering torque becomes 0.

Abstract: In a motor-driven power steering apparatus which converts a rotation of an electric motor into a linear stroke of a rack shaft by a power transmission mechanism, and steers a wheel coupled to the rack shaft, there is provided an automatic neutral restoring means for judging a vehicle stop and a manual steering rest, and rotating the electric motor as to restore a detected steering angle of a steering angle sensor to a neutral position so as to execute an automatic steering, when the steering angle is out of the neutral position.

Abstract: A winder is provided near a quarter window of a rear door. A shade member is drawably mounted about the winder. A connecting piece is connected to a drawing arm and mounted to the rear portion of the shade member. A shoe is mounted to a bottom end of the drawing arm. The shoe engages with a regulatory groove extending in a drawing direction of the shade member. A driving cable is connected to the shoe. The shade member can be drawn out across the window by the drawing arm via the sending out of the driving cable by an operating mechanism. Since the regulatory groove extends substantially in a circle, when the shoe moves through engagement with the regulatory groove, the connecting piece connected to the drawing arm pivots relative to the shoe.

Abstract: A motor-driven power steering apparatus is provided with a sub control system including a map memory means storing a first window time setting map M1 and a second window time setting map M2 in which a window time is set shorter, a window time setting map selecting means selecting the first window time setting map M1 at a time when a torque change amount dT and a current change amount dIm are both smaller than respective predetermined change amounts, and selecting the second window time setting map M2 in the other cases, a window time deciding means collating a point coordinate of a combination of a steering torque and a motor current with the selected window time setting map so as to decide a window time, and a motor drive stop determining means determining the motor drive stop in the case that the point coordinate exists in a region corresponding to the decided window time for the window time, and when a motor drive stop determining means determines the motor drive stop, the drive of the motor controlled so

Abstract: The invention provides a motor-driven power steering apparatus provided with a fault diagnosing means diagnosing a fault of a board temperature detecting apparatus on the basis of an armature current Im detected by a motor current detecting means and a board temperature Tb of the control board detected by the board temperature detecting apparatus, and a target current suppressing means suppressing a target current Iq at a time when the fault diagnosing means diagnoses that the board temperature detecting apparatus is out of order

Abstract: In a motor-driven power steering apparatus which converts a rotation of an electric motor into a linear stroke of a rack shaft by a power transmission mechanism, and steers a wheel coupled to the rack shaft, there is provided an automatic neutral restoring means for judging a vehicle stop and a manual steering rest, and rotating the electric motor in such a manner as to restore a detected steering angle of a steering angle sensor to a neutral position so as to execute an automatic steering, when the steering angle is out of the neutral position.

Abstract: A motor-driven power steering apparatus is provided with a self-aligning torque computing means for computing a self-aligning torque based on of a steering angle and a vehicle speed, a friction torque computing means for computing a friction torque in accordance with a steering angle change from a steering angular velocity, an apparent steering torque computing means for computing an apparent steering torque from the friction torque and a steering torque, and a steering torque feedback control means for driving and controlling an assist motor in such a manner that a difference between the self-aligning torque and the apparent steering torque becomes 0.

Abstract: A winder is provided near a quarter window of a rear door. A shade member is drawably mounted about the winder. A connecting piece is connected to a drawing arm and mounted to the rear portion of the shade member. A shoe is mounted to a bottom end of the drawing arm. The shoe engages with a regulatory groove extending in a drawing direction of the shade member. A driving cable is connected to the shoe. The shade member can be drawn out across the window by the drawing arm via the sending out of the driving cable by an operating mechanism. Since the regulatory groove extends substantially in a circle, when the shoe moves through engagement with the regulatory groove, the connecting piece connected to the drawing arm pivots relative to the shoe.

Abstract: Control method for an electric power steering apparatus feeds back a motor current, flowing through a motor whose operation is controlled in accordance with a target motor current, so that the driving of the motor is controlled with the fed-back motor current. Peak value of the motor current is detected, and, for feedback control based on the detected peak value, the detected peak value is corrected to decrease. The thus-corrected peak value is fed back to control the motor current to conform to a target motor current value.

Abstract: Control method for an electric power steering apparatus feeds back a motor current, flowing through a motor whose operation is controlled in accordance with a target motor current, so that the driving of the motor is controlled with the fed-back motor current. Peak value of the motor current is detected, and, for feedback control based on the detected peak value, the detected peak value is corrected to decrease. The thus-corrected peak value is fed back to control the motor current to conform to a target motor current value.

Abstract: A process for the continuous preparation of aniline by hydrogenating nitrobenzene with hydrogen is disclosed which comprises the steps of suspending, in an aniline solvent, a catalyst of palladium or palladium-platinum which is deposited on a lipophilic carbon having an oil absorbency of at least 100, and carrying out reaction at a temperature of from 150.degree. to 250.degree. C. substantially in the absence of water while aniline and water formed in said reaction are continuously distilled off as vapor from the reaction product, and the concentration of nitrobenzene in the reaction solution is maintained at 0.01% by weight or less, wherein a zinc compound is added to the reaction system as a promotor and carbon monoxide is added to the hydrogen at a concentration of 1-500 ppm.

Abstract: A process for the continuous preparation of aniline by hydrogenating nitrobenzene is disclosed which comprises the steps of suspending, in an aniline solvent, a catalyst of palladium or palladium-platinum which is deposited on a lipophilic carbon having an oil absorbency of at least 100, adding a zinc compound and an alkali metal carbonate or a zinc compound and an alkali metal bicarbonate as promotors to the reaction system, and carrying out reaction at a temperature of from 150 to 250.degree. C. substantially in the absence of water while aniline and water formed in said reaction are continuously distilled off as vapor from the reaction product, and the concentration of nitrobenzene in the reaction solution is maintained at 0.01% by weight or less.

Abstract: A commercially advantageous process for producing m- or p-aminobenzylamine is provided, which is characterized by subjecting m- or p-nitrobenzaldehyde and ammonia to catalytic reduction in the presence of a reducing catalyst in an organic solvent; in the reduction, when nitrobenzaldehyde and ammonia are in advance made a mixed solution in an organic solvent, and this solution is added in divided manner, the yield being further improved.

Abstract: Diphenylamines or N,N'-diphenyl-phenylenediamines can be obtained by heat-reacting an aniline or a phenylenediamine with preferably an excess of a phenol in an amount of 4 to 20 moles per mole of the aniline or phenylenediamine in th presence of a hydrogen transfer catalyst and a cyclohexanone corresponding to said phenol.The excess phenol used in the reaction undergoes reduction in the reaction system to form a cyclohexanone, which in turn reacts with the aniline or phenylenediamine to form a Schiff base and is thus consumed. The Schiff base forms the intended product by means of a dehydrogenation reaction, and the hydrogen evolved at this time reduces the phenol to form a cyclohexanone.The phenol present in excess thus becomes in the system a solvent, a starting material for the cyclohexanone, and an acceptor of the hydrogen that forms as a by-product at the time of formation of the intended product.