Abstract: An intruder detection device provides first and second detection areas which are covered by first and second PIR sensors. When intrusion of an object is detected in these areas, the detection signals are amplified by amplifiers, and then processed in a control unit such that orders for generating alarms are output from alarm output units to a monitoring station. While these processed detection signals are output to the alarm output units, the control unit sends other processed signals to LED display units, so that the LED display units turn on alarm lights. The intruder detection device also has a device for separating the object detection areas of the first and second PIR sensors such that their detection areas do not overlap.

Abstract: A differential infrared detector has: a detection element which detects infrared radiation in a predetermined detection area, converts a radiation energy thereof into an electric signal, and outputs the signal; and a discrimination circuit which calculates a variation amount of the radiation energy, based on the output signal, and generates a human body detection signal if the variation amount is equal to or greater than a predetermined level. This differential infrared detector comprises: an ambient temperature detection circuit which generates a voltage, based on an ambient temperature in the detection area; and a sensitivity correction circuit which is arranged to increase detection sensitivity of the output signal produced by the detection element if the ambient temperature is within the predetermined temperature range, based on the voltage.

Abstract: An intruder detection device 1 provides detection areas A1, A2 which are covered by PIR sensors 21, 22. When intrusion of an object is detected in these areas, the detection signals are amplified by amplifiers 4, and then processed in a control unit 51 such that orders for generating alarms are output from alarm output units 61, 62 to a monitoring station. While these processed detection signals are output to the alarm output units 61, 62, the control unit 51 sends other processed signals to LED display units 71, 72, so that the LED display units 71, 72 turn on alarm lights. The intruder detection device 1 also has a means for separating the object detection areas of the PIR sensors 21, 22 such that their detection areas do not overlap.

Abstract: A seat belt webbing in which elongation at initial yield point is 6% or less, tenacity at 8% elongation is 1.5 to 7 kN, tenacity at break is 15 kN or more, elongation under load of 11.1 kN is 10 to 40% and an energy absorption work amount is 600 J/m or more, and a passenger-holding device comprising the seat belt webbing and a seat belt retractor portion having a lock mechanism for stopping rotation of a take-up shaft in response to acceleration or abrupt unwinding of a webbing exhibits high energy absorption performance at low costs.

Abstract: A method for melt-spinning synthetic fiber, characterized by using a spinning device of which the part to be contacted with polymer in melt is coated with a film of an oxide, nitride or carbide of any of Si, Ti, Zr, Al, W, B, Ta and Ge or with a film of heat-resistant resin.

Abstract: Disclosed are a process for producing a tubular nonwoven fabric and tubular nonwoven fabrics produced by the same. In the process, a web is formed on a first rotating cylinder by catching fibers carried to the surface of the first rotating cylinder by a fluid, the web is transferred to a second rotating cylinder, a tube of the transferred web is formed on and around the second rotating cylinder, and the tube is drawn in the axial direction of the second rotating cylinder to form a tubular nonwoven fabric. The tubular nonwoven fabric with a high unit weight can be produced without elongating or breaking the nonwoven fabric, and the diameter of the tubular nonwoven fabric can be freely changed.

Abstract: Disclosed are a process for producing a tubular nonwoven fabric and tubular nonwoven fabrics produced by the same. In the process, a web is formed on a first rotating cylinder by catching fibers carried to the surface of the first rotating cylinder by a fluid, the web is transferred to a second rotating cylinder, a tube of the transferred web is formed on and around the second rotating cylinder, and the tube is drawn in the axial direction of the second rotating cylinder to form a tubular nonwoven fabric. The tubular nonwoven fabric with a high unit weight can be produced without elongating or breaking the nonwoven fabric, and the diameter of the tubular nonwoven fabric can be freely changed.

Abstract: Disclosed are a process for producing a tubular nonwoven fabric and tubular nonwoven fabrics produced by the same. In the process, a web is formed on a first rotating cylinder by catching fibers carried to the surface of the first rotating cylinder by a fluid, the web is transferred to a second rotating cylinder, a tube of the transferred web is formed on and around the second rotating cylinder, and the tube is drawn in the axial direction of the second rotating cylinder to form a tubular nonwoven fabric. The tubular nonwoven fabric with a high unit weight can be produced without elongating or breaking the nonwoven fabric, and the diameter of the tubular nonwoven fabric can be freely changed.

Abstract: A packaging material according to the present invention includes an electret material having a surface part mutually different polarized electric charges on a front surface and a rear surface thereof. A method of packaging according to the present invention includes covering at least a portion of an object using the packaging material.

Abstract: Novel silane compound, alkoxy cyclopentyl dimethoxysilane, is prepared by reacting cyclopentyl trihalosilane with ROH and then with methanol, or by reacting cyclopentyl trimethoxysilane with ROH, wherein alkyl in the alkoxy or R in ROH stands for an organic group selected from the group consisting of sec-butyl, tert-amyl, cyclopentyl, oxa-3-cyclopentyl, cyclohexyl and 2-isopropyl-5-methyl cyclohexyl groups. The silane compounds are useful as a catalytic component for olefin polymerization and as a silane coupling agent.

Abstract: There are provided processes for the preparation of .gamma.-methacryloxypropylsilane compounds which comprise carrying out the reaction of allyl methacrylate with a hydrosilane compound in the presence of a platinum catalyst, while allowing at least one of a hindered phenol compound and an aromatic amine compound to coexist in the reaction system with an alkylamine compound or an amide compound, or with a gas containing molecular oxygen, or with a phenol compound having an aminoalkylene group. By using these processes as provided, gelation of the reaction mixture in the reaction system and during the course of purification thereof by distillation can effectively be avoided, and the desired .gamma.-methacryloxypropylsilane compounds can be obtained in good yield.

Abstract: Novel silane compounds, tert.-butoxy cyclopentyl dimethoxysilane and isopropoxy cyclopentyl dimethoxysilane, are prepared by reacting cyclopentyl trihalosilane with ROH (where R stands for tert.-butyl or isopropyl group) and then with methanol, or by reacting cyclopentyl trimethoxysilane with ROH. The silane compounds are useful as a catlaytic component for olefin polymerization and as a silane coupling agent.

Abstract: The present invention relates to protective sheets used for wearing on clothes and keeping the clothes clean which have no problem such as slipping off, stripping up, falling down and so on without fixing them on bodies with strings, namely, protective sheets effectively used for aprons and napkins and practically relates to protective sheets which are the above described aprons and napkins consisting of electret sheets whose surface electric charge density is 1.times.10.sup.-10 coulomb/cm.sup.2 or more and weight per square meter is 10 g/m.sup.2 or more and 100 g/m.sup.2 or less.

Abstract: In a process for the preparation of epoxy group-containing alkoxy silanes by hydrosililation of a terminally unsaturated epoxy compound with a hydro-alkoxy silane using a platinum catalyst, the improvement comprising carrying out the hydrosililation in the presence of an alcohol. By this process formation of the internally sililated isomer can be suppressed and the desired terminally sililated poduct can be produced at an approximately 100% selectivity.

Abstract: A method for filtering liquids having a dielectric constant less than 10 is disclosed. The method includes the step of filtering a liquid through a porous layer of an electret, the electret consisting of a fibrous sheet having a surface charge density of at least 5.times.10.sup.-11 coulombs/cm.sup.2, wherein on the upstream side of the electret is laminated another porous layer having at least a porosity or an average fiber diameter greater than that of the electret layer. The upstream layer may consist of either a fibrous electret layer, or an uncharged fibrous layer.

Abstract: A process for preparing aminopropyl silanes comprises reacting an allylamine with a hydrosilane in the presence of a ruthenium compound having at least one tertiary phosphine ligand as a catalyst. By the proposed process the corresponding gamma-aminopropyl silane can be prepared in a high yield in a short period of reaction time.

Abstract: A process for preparing aminopropyl silanes in which an allylamine is reacted with a hydrosilane in the presence of a catalyst comprising (i) metallic rhodium or a rhodium compound and (ii) a basic compound. By the proposed process the corresponding gammaaminopropyl silane can be prepared in a high selectivity and yield within a short period of reaction time.

Abstract: In a process for preparing aminopropyl alkoxy silanes comprising reacting an allylamine with a hydro-alkoxy silane in the presence of a rhodium catalyst, the improvement which comprises use of a rhodium phosphide or its oligomer as said rhodium catalyst. By this process the desired gamma-isomer can be prepared in a high selectivity and yield within a short reaction time.

Abstract: A process for preparing aminopropyl alkoxy silanes comprising reacting an allylamine having at least one active hydrogen atom attached to the amine nitrogen atom with a hydro-alkoxy silane having from 1 to 3 alkoxy groups attached to the silicon atom in the presence of a rhodium complex having inorganic ligands, at least one of said ligands being carbonyl. By this process the desired gamma-isomer can be prepared in a high selectivity and yield within a short reaction time. When the reaction is carried out in the presence of carbon monoxide and/or a cyclic olefinic compound, the selectivity and yield of the gamma-isomer can be further improved. The presence of carbon monooxide in the reaction system further serves to lengthen the catalyst life and to reduce the amount of the catalyst to be used.

Abstract: A process for preparing a hydrosilylation catalyst by dissolving chloroplatinic acid H.sub.2 PtCl.sub.6 in a cyclic ether or cyclic ester containing at least 3 carbon atoms, and maintaining the resulting solution at a temperature of at least 30.degree. C.