Abstract: In the carbonylation of olefinic compounds in the presence of a cobalt carbonyl catalyst, the addition to the reaction system of a secondary phosphine oxide represented by the general formula ##STR1## wherein R.sup.1 and R.sup.2 are the same or different and each is substituted or unsubstituted hydrocarbon residue having not more than about 20 carbon atoms, in an amount of 0.2 to 20 moles per gram atom of the cobalt makes it possible to separate the reaction product from the reaction mixture by direct distillation without any such special operation for the catalyst separation as required in the conventional processes. The distillation residue which contains the catalyst can be recycled for the reuse thereof in the carbonylation.

Abstract: In hydroformylating an olefinic compound in an organic solvent and in the presence of a rhodium complex and a trisubstituted phosphine to give the corresponding aldehyde, at least one diphosphino compound of the following general formula (I) is added to the reaction system in a proportion of 0.20 to 5.0 equivalents per rhodium atom in the rhodium complex ##STR1## wherein A.sup.1 and A.sup.2, respectively, are aryl groups; R.sup.1 and R.sup.2, respectively, are an aryl group or a saturated hydrocarbon residue containing 1 or more carbon atoms; and ##STR2## represents a substituted or unsubstituted alicyclic hydrocarbon group containing 3 to 6 carbon atoms in the main ring.The addition of diphosphino compound (I) has a remarkable life-prolonging effect on the rhodium catalyst.

Abstract: A textured composite yarn having the appearance and touch of a cotton yarn comprises a core yarn and a sheath yarn composed of a plurality of filaments, said sheath yarn wrapping around the core yarn. A part of the filaments of the sheath yarn wrap around the core yarn with a successive alternate twist and are substantially cohered and partially adhered to the core yarn. The composite yarn is made by simultaneous draw-false twisting and heating two component yarns having different fusing temperatures, one of the component yarns being overfed in relation to the other component yarn.

Abstract: For the purpose of controlling the torque of a three phase induction motor a control system suitable to be operated by a computer is provided. A torque instruction, an angle of rotation, a flux angle, the magnitude of rotating magnetic field and suitable constants are used to produce current instructions for respective phases to pass stator current necessary to produce an instructed torque.

Abstract: Process and apparatus for controlling a filament pad in the stuffing chamber of a pneumatic crimper and for imparting an improved filament cohesion to the crimped filament yarn within said crimper.

Abstract: Rhodium catalyzed hydroformylation of olefinic compounds is essentially effected in the presence of a secondary phosphine oxide of the general formula (I) in an amount of at least one mole per gram atom of rhodium, which supresses the thermal degradation of the rhodium catalyst in the hydroformylation stage as well as in the distillation of the reaction products: ##STR1## wherein, in the formula (I), R.sup.1 and R.sup.2 are the same or different, substituted or unsubstituted hydrocarbon residues containing not more than 20 carbon atoms.The phosphine oxide of the general formula (I) maintains the catalytic activity over a prolonged period of time and prevents essentially metallic rhodium from sticking to the vessel during distillation of the reaction products from the reaction mixture, and consequently makes recycle of the catalyst easier and enables lowering the hydroformylation pressure.

Abstract: Hydroformylation of olefins is effected in an organic solvent in the presence of a rhodium complex and a trisubstituted phosphine to give the corresponding aldehydes. Addition of a diphosphinoalkane of the general formula ##STR1## wherein, in the formula, A.sup.1 and A.sup.2 are each aryl, R.sup.1 and R.sup.2 are each aryl or saturated hydrocarbon residues containing one or more carbon atoms, and Z is an alkylene radical whose principal chain contains 2 to 5 carbon atoms and optionally may have one or more lower alkyl substituents, to the hydroformylation reaction system in an amount of 0.20 to 2.5 equivalents per gram atom of the rhodium contained in the rhodium complex markedly prolongs the life of the rhodium catalyst.

Abstract: Process and apparatus for crimping a filament yarn, the process employed comprising forcing a hot fluid entrained filament yarn into a stuffing chamber in one direction, forcing a cold fluid from an opposite direction into a staying control chamber located down stream of said stuffing chamber, exhausting said hot fluid from the stuffing chamber and exhausting said cold fluid from the staying control chamber respectively.The apparatus comprises a hot fluid jet nozzle having a hot fluid supply conduit connected thereto, a stuffing chamber having a hot fluid exit, a staying control chamber having a cold fluid exit, and a cold fluid supply device in said order.

Abstract: The invention provides a method for removing fluorine from water by causing aluminium ions ionized in the water to combine with fluorine ions to produce an insoluble aluminium fluorides, which can be readily eliminated from the water.

Abstract: A position-controlling system which comprises a reference counter periodically giving a referential pattern numeral; a resolver forming an excited waveform from the referential pattern numeral given by the reference counter and detecting the position (angle of rotation) of a movable machine section in the term of a phase data per prescribed period of time; a buffer register loaded with the content of the reference counter corresponding to the phase data; and a controller supplied with a data on the detected position of the movable machine section stored in the buffer register and a data of the position instruction thereby to produce an output denoting an accumulative position errors occurring per prescribed period of time in the actual moving of the movable machine section, and wherein a servo system is operated upon receipt of a periodic output from the controller according to instructions on the momentarily changing positions of the movable machine section, thereby controlling the machine positions.

Abstract: A microcomputer system comprising two microcomputers, a read only memory (hereinafter abbreviated as "ROM") and a random access memory (hereinafter abbreviated as "RAM") exclusively used with each of the two microcomputers and a common RAM accessible from the two microcomputers, wherein the microcomputers and memories are connected together; there are provided between the microcomputers and common RAM an address decoder for detecting the access of the respective microcomputers to the common RAM and a control flip-flop circuit which is set when one of the two microcomputers completes a memory access cycle and is reset when the other finishes a memory access cycle; when the transfer of data is not carried out between the two microcomputers, then these microcomputers generally make an access to the corresponding exclusive memories; only when an access to the common RAM is made by the two microcomputers substantially at the same time, then the flip-flop circuit places one of the two microcomputers in a waiting po

Abstract: A numerical control system comprises a machine tool having two axially movable sections, a tape reader for instructing a movement path of the movable section, a sampling pulse generator for generating a pulse for each predetermined time period, a position detector for detecting the amount of movement of the movable section for each sampling time, a controller for calculating an instruction position increment value corresponding to the movement for the predetermined time period of the movable section of the machine tool based on a data from the tape reader, the sampling pulse from the sampling pulse generator and a position data from the position detector, a digital-analog converter for converting a digital output of the controller to an analog value, a servo amplifier for amplifying the output of the digital-analog converter and a servo motor driven by the output of the servo amplifier.

Abstract: A numerical control system for lathes includes a controller adapted to calculate a tool moving amount based on data from a tool moving mode-punched tape as read by a tape reader for each sampling time .DELTA.t when a pulse is generated from a sampling pulse generator and on spindle rotation position data detected by a spindle position detector, and executes a tool action instruction mode including a feed per minute instruction mode, feed per spindle revolution instruction mode and thread cutting instruction mode by operating a tool through a servo system in accordance with the tool action mode.