This invention relates to 2,6-dihalobenzyl esters. There are provided 2,6-dihalobenzyl esters of formula I: (I) where R1 and R2 are independently selected from fluoro, chloro and bromo, Y1 is chloro, and Y2 is fluoro or chloro, provided that when R1 and R2 are both bromo Y2 is fluoro and when neither of R1 and R2 is bromo, at least one of R1 and R2 is the same as at least one of Y1 and Y2; m...

Expandable beads of blends of polyphenylene ether and vinyl-aromatic polymer are prepared by carrying out the polymerization of the vinyl-aromatic monomer in the presence of the polyphenylene ether and of an expanding agent.

PURPOSE:To make connection to an external circuit satisfactory and improve mechanical strength in a layer which is used for connection and the point of contact on a superconductor and decrease a secular change by providing either of the layers of transition metal compounds which is selected among groups of transition metals, e. g. silicide, nitride, boride, and carbide on a part of a superconducto...

A method of extruding a foamed thermoplastic plastics material wherein the thermoplastic plastics material, together with a pore regulating agent, is introduced into an extruder and is fused. Gaseous nitrogen, in an amount of 0.2% to 0.5% by weight, and an incompletely halo-substituted hydrocarbon, in an amount of from 0.5% to 2% by weight, are sequentially injected into the fused mixture. The inj...

A biaxially-oriented film with high mechanical strength, which includes 69 to 94.99% by weight of a polyolefin, 5 to 30% by weight of a natural or synthetic resin having a softening point in the range from 70 DEG to 170 DEG C., and 0.01 to 1% by weight of a nucleating agent, based on the total weight of the film. A method for producing this film includes biaxially drawing the film at temperature...

A method for attaching flexible rubber sheeting to rigid insulation for roofing applications using a pressure-senstive adhesive consisting essentially of a crosslinked polymer of monomers consisting essentially of from about 90 to 99 parts by weight of an alkyl acrylate and from about 1 to 10 parts by weight of a polar nitrogen-containing copolymerizable monomer and rigid insulation and rubber she...

PURPOSE:To provide a multiple-cored superconductor of a high critical current density (Jc), a high critical current (Ic), and excellent antiquenching property by forming multiple lines of superconductor in a matrix of extendable material, and subjecting them to a specified heat treatment. CONSTITUTION:Multiple grooves 2 formed in the longitudinal direction of a base body 1 are filled with supercon...

The film (11) extruded from a vinylidene fluoride polymer is subjected to a stretching of at least 200% while still in the molten state, and then cooled rapidly to a temperature below 50 DEG C. The equipment comprises, in series, an extruding device (1) (2), a cooling device consisting of a thermostatically controlled liquid bath (6), the level of which is located at a distance of 10 to 300 mm fr...

Conductor composition comprising an admixture of finely divided particles of (a) conductive metal, (b) inorganic binder and (c) a colorant which is a mixture of silver oxide and/or copper oxide or precursor thereof and B2O3.

A process is proposed for removing Zn, Cd and Pb from waste waters of the zinc-producing industry which has the characteristic that, downstream of the membrane permeation technique, the waste water is brought into contact with an emulsion of a first acid with a hydrocarbon mixture, an organic extraction medium and, preferably, a surfactant, the loaded emulsion is separated from the depleted waste ...

Shoe has an inner assembly (48) having a deformable portion (46, 50) which acts together with the shoe upper (24) to adjust the girth of the shoe to fit feet of differing widths and girths. Pref. the portion is resiliently deformable and can be made of elastic sheet material, on adjustably tensioned spring or a deformable gas filled bladder. The elastic material can be a spandex fabric. The inner ...

Process and device for the production of reinforcing elements composed of resistant fibres distributed in three dimensions, according to which process, by means of a needle (3.1) driven in a to-and-fro movement, a continuous fibre (4) is introduced into a substrate (2), resting on a support (1) and consisting of such fibres crossed in at least two directions, by pricking from the free face (2a) of...

PURPOSE:To perform the soldering without causing the deviation in the position between an IC chip and a printed circuit board without generating thermal deformation on the circuit board by heating locally the chip positioned on the circuit board by a collet by reflected light of a laser beam. CONSTITUTION:The IC chip 3 is positioned on the flexible printed circuit board 2 mounded on a sample base ...

PURPOSE:To facilitate determination of a cause of vibration of a fluid unit by detecting a vibration level of the fluid unit, extracting applicable vibration level data from fluctuation factors of fluid to generate vibration at the fluid unit, and comparing them with actual data. CONSTITUTION:For execution for a cenrifugal pump 1 for transferring low temperature liquefied gas such as LNG and LPG, ...

PURPOSE:To eliminate a vertical brightness inclination without increasing the frequency of a source signal by applying a voltage to a common electrode so that the absolute value of the potential difference between both ends of a liquid crystal cell increases gradually in a time from inversion of each frame cycle of an X electrode signal to next inversion. CONSTITUTION:The X electrode signal applie...

PURPOSE:To eliminate a vertical brightness inclination without reference to whether an image is light or dark by providing a signal processing means which varies a quantity for compensating the vertical brightness inclination according to a picture element potential. CONSTITUTION:Video signals after series/parallel conversion are inputted through a series/parallel converting circuit 7 to X electro...

PURPOSE:To easily change and display only a part of a screen and to easily receive the data on only the necessary one of those fields of the screen via a program by informing dynamically a system of the type of the process and the field to be processed when the screen is received from the program. CONSTITUTION:A process request designating means 1 is provided to request a partial transmission/rece...

Ceramic bodies suitable for use in the filtration of molten metal are formed by immersing a porous organic substrate material in an aqueous thixotropic slurry containing yttria, zirconia and alumina; expelling excess slurry; drying the impregnated material; and heating to an elevated temperature to burn off the organic material and sinter the ceramic materials. The resulting zirconia-alumina ceram...

Perhaloalkylvinylcyclopropanecarboxylates having the general formula are disclosed wherein one of Y and Z is a perhaloalkyl group having 1 to 4 carbon atoms and the other is hydrogen, halogen, lower alkyl, phenyl, phenylthio or benzyl, with the proviso that Y and Z may be combined to form a perhalocyclopentylidene group; R is halogen, hydroxy, lower alkoxy or -OR<1> in which R<1> represen...

A wood compression chamber is defined by longitudinally overlapping side walls (30,37,47,48), which are mutually displaceable in the longitudinal direction. A heated wood sample is compressed axially in the direction of the grain or fibres by a hydraulic cylinder (18). The side wall parts which prevent deflection may be pressed into frictional engagement with the sample by inflatable bags or hose....