摘要:
Disclosed are a catalyst for producing, from an alcohol, an olefin whose number of carbon atoms is at least one more than the number of carbon atoms of the alcohol, wherein at least the surface of the catalyst is substantially composed of zirconium oxide; a method for producing an olefin using the same; and so on.
摘要:
The present invention aims at reducing the time required for a series of analyses in the sequential performance of gradient analyses under a variety of conditions. To this end, in a control apparatus for controlling the operation of a liquid chromatograph having a gradient analysis function in which a mobile phase composed of a plurality of mixed solvents is used and a chromatograph analysis is performed while the mixture ratio of the solvents is temporally changed, the liquid chromatograph is controlled so as to continuously change the mixture ratio of the solvents from an initial mixture ratio to a final mixture ratio when performing a sample analysis; and as to perform, before the sample analysis, a preparatory liquid supply in which the mixture ratio of the solvents is continuously changed from the initial mixture ratio to the final mixture ratio at a rate higher than that in the sample analysis.
摘要:
The present invention includes a first switch 4a, a second switch 4b and a capacitor 4d. The first switch 4a normally in a closed state is connected in series between a power source 1 and load, and opens when an accident builds up. The second switch 4b normally in an open state closes almost simultaneously with the opening of the first switch 4a. The capacity 4d normally charged by an arbitrary voltage has predetermined electrically capacity. The serial connected circuit consists of the second switch 4b and capacitor 4d, it is connected in parallel to the first switch 4a.
摘要:
An operation apparatus of a circuit breaker provided with a mobile contact and a fixed contact, the mobile contact is pressed against the fixed contact or drawn apart from the fixed contact, comprising an operation rod fixed to the mobile contact and held to be movable with respect to the fixed contact, a mobile member movably connected to the operation rod, a relative movable range of the mobile member to the operation rod being limited within a predetermined value, a first elastic member for urging the operation rod with respect to the mobile member in a direction in which the mobile contact is pressed against the fixed contact, a fixed member for movably holding the mobile member, a second elastic member for urging the mobile member with respect to the fixed member in a direction in which the mobile contact is drawn apart from the fixed contact, a permanent magnet for driving the mobile member with respect to the fixed member in a direction in which the mobile contact is pressed against the fixed contact, an operation electromagnet for applying a magnet force to the permanent magnet so as to drive the mobile member, and a power supply circuit for energizing the operation electromagnet.
摘要:
According to the present invention, there is provided a magnetic disk memory system. An embodiment of this system comprises a magnetic disk of a perpendicular recording type, including a soft magnetic backing layer and a magnetic recording layer of a perpendicular magnetic anisotropy formed on the backing layer, and a magnetic head for writing or reading of data with respect to the magnetic disk, wherein the magnetic head comprises (a) a pair of main magnetic poles each of which made of a material having a high magnetic permeability, one end of the each pole being located so as to face the magnetic disk surface, (b) a non-magnetic interlayer provided between two main magnetic poles of the pair, (c) a recording coil disposed so as to generate a magnetic flux passing through the magnetic disk via the main magnetic poles, and (d) an MR element provided via an insulation layer on the other ends of the pair of main magnetic poles, one MR element having a film surface parallel to end surfaces of the other ends of the main magnetic poles, and being magnetically coupled with the pair of main magnetic poles.
摘要:
Disclosed is a silicone-based antifoam composition capable of exhibiting high defoaming activity even at a high temperature with excellent durability so as to be useful in dyeing processes. The composition comprises, as the principal ingredient, a polyoxyalkylene-modified polydimethylsiloxane, of which, different from conventional polyoxyalkylene-modified polydimethylsiloxanes, the polyoxyalkylene groups consist of two different types relative to the molar proportion of the oxyethylene units and oxypropylene units, in addition to a silicone oil compound of a silica filler, a poly(oxyethylene-oxypropylene) copolymer and low-molecular polydimethylsiloxane terminated at each molecular chain end with a dimethyl hydroxy silyl group.
摘要:
This invention discloses a fiber treatment agent characterized in that it comprises:(A) 100 parts by weight of an organopolysiloxane with no less than 2 hydroxyl groups and/or alkoxyl groups bonded to Si atoms per molecule,(B) 0.5-50 parts by weight of silica and/or a polysilsesquioxane,(C) 0.1-20 parts by weight of an organoalkoxysilane containing amide groups and carboxyl groups, and/or its partial hydrolysis condensate,(D) 0.1-20 parts by weight of an organoalkoxysilane containing amino groups or epoxy groups and/or its partial hydrolysis condensate, and(E) 0.01-10 parts by weight of a curing catalyst, and characterized in that it is also a cationic or non-ionic emulsion.
摘要:
The fabric finishing agent is a solution of a graft copolymer composed of an organopolysiloxane moiety and a grafting moiety thereon obtained by the graft copolymerization of an acrylic or methacrylic monomer, optionally, in combination with monomers of other types. The fabric finishing agent is capable of imparting various kinds of fabric materials with greatly improved soft but non-sticky feeling of touch with resilient elasticity and the effect of treatment is durable and resistant against laundering and dry cleaning.
摘要:
The inventive fabric treatment agent can impart excellent hydrophilicity to fabric materials of, in particular, synthetic fibers with durability and launderability. The principal ingredient of the agent is a copolymer composed of three types of moieties including (a) a diorganopolysiloxane terminated at both molecular chain ends each with a non-silanolic hydroxy group or other active hydrogen-containing group, e.g. --SH, --COOH and --NH.sub.2, (b) a polyol compound having polyoxyalkylene linkages which is typically a polyoxyethylene glycol and (c) a diisocyanate compound which serves as a coupling agent between the moieties (a) and (b).
摘要:
In this vacuum interrupter device, one or more upper terminals and lower terminals connected to a vacuum interrupter built in the device are attached to an insulating barrier which is provided with a plurality of chambers opening outward and capable of being closed by removable covers. In each of said chambers is placed one of non-linear resistors as many as said upper or lower terminals, one end of each of said resistors being connected to one of the upper or lower terminals corresponding thereto which is connected to the electric load, thereto and another end of each of said resistors being grounded through a switch.