The CO2 required for carbonation is added in the form of dry ice.

1. A process for the preparation of a paste-making polymer of vinyl chloride or a mixture of vinyl chloride containing up to 30% by weight of copolymerisable monomer by batchwise polymerisation in the presence of a water-soluble or monomer-soluble catalyst and in the presence of a predispersion comprising a) 0.2 to 3.0 per cent by weight, based on the monomer, of an alkali metal salt or ammonium s...

PURPOSE:To obtain a semiconductor device, into which inductance is incorporated, by forming inductance by using a conductor for multilayer wirings. CONSTITUTION:First layer wirings 3 are executed on a semiconductor substrate 1 by a metal such as aluminum, second layer wirings are executed by ferromagnetic bodies 5 consisting of nickel, etc., third layer wirings 4 are executed by a metal such as al...

A differential gear mechanism of the limited slip type is provided. The mechanism includes a clutch pack (35) and a cam mechanism (41) which are able to retard differentiating action of the differential gear means (19,23,25). A flyweight mechanism (51) is operable to actuate the cam mechanism, and to engage the clutch pack. The cam member (43) includes a cam surface (47) having alternating rising ...

A process for manufacturing high-resistance elements for integrated circuits, in which the resistors are positioned on a layer of silica covering an integrated circuit, in a polycrystalline silicon zone possessing high resistivity, current supply lines being formed of a layer of polycrystalline silicon possessing low resistivity, surmounted by a layer of tantalum silicide. Plugs of photosensitive ...

An electroluminescent device wherein a light-emitting layer is formed between electrode layers, and a selenium layer is formed between the light-emitting layer and at least one of the electrode layers. Each of the crystals in the selenium layer grows in a columnar shape in the direction extending at right angles to the light-emitting layer.

An electroluminescent element is supported by a heat-resisting substrate 1 which has a strain point sufficient for resisting the effect of heat treatment of the thin-film electroluminescent layer at a temperature of 600 DEG C or more. Preferably, the substrate comprises aluminoborosilicate gloss having a strain point of about 650 DEG C or more. The electroluminescent element comprises an electrolu...

A rotary stone-cutting head has a body generally centered on and adapted to be rotated in a predetermined direction about an axis. An array of cutter supports on the body directed at least partially in the direction carry respective cutter teeth each having relative to the axis an outer cutting edge and relative to the direction a generally angularly forwardly directed face adjacent the edge and f...

A drive train for a steerable drive wheel of a vehicle includes a spur gear stage and a bevel gear stage in a drive train housing which is supported for pivotal movement about a vertical axis. The drive wheel is driven through a horizontal axis from a vertically arranged motor. The housing is divided so that the axle-base change of the spur gear stage which is necessary when changing the drive whe...

The live wire of a plug is connected to a terminal (16) shaped to have good thermal contact with a recess (46, 48) in the plug base (10). A cover (24) welded onto the base (10), also thermally contacts the terminal (16) via a hollow, finned depending abutment (56).

1. A process for the manufacture of 13-cis-retinoic acid, characterized by a) reacting 5-hydroxy-4-methyl-2(5H)-furanone with a salt of the formula see diagramm : EP0111325,P8,F1 wherein R1 , R2 and R3 are aryl or di-(lower-alkyl)-amino and X is halogen, in a lower alkanol in the presence of an alkali metal hydroxide at a temperature of -10 to -50 degrees C, and b) treating the reaction product...

This invention relates to digital transmission techniques whereby information produced in asynchronous form, for instance by variable-length coding and/or by conditional coding, is intended for transmission through a synchronous digital transmission path. More particularly, the invention concerns a receiving device comprising a picture buffer memory having a content that can be different from that...

A process for making glass fibre reinforced cement composite material on a Hatschek machine comprises forming a dilute aqueous slurry of cement, glass fibre, pulverised fuel ash (p.f.a.), finely divided amorphous silica and cellulose pulp, the glass fibre being blended in after the other constituents, then incorporating a flocculant while feeding the slurry into a vat (57), depositing a web of cem...

PURPOSE:To facilitate the ride-on and -off a tractor for a passenger, by providing such an arrangement that a steering projection is formed on the front side of the center section of a flat floor step, and a rear cover is planted on the rear section of the floor step with a flat floor section being formed between the projection and the cover. CONSTITUTION:A floot step 6 having a predetermined widt...

PURPOSE:A PP film low in unevenness of thickness and good in stretchability, obtained by molding a specified PP into a film. CONSTITUTION:Propylene is bulk-polymerized in the presence of a catalyst system comprising a MgCl2-carrying TiCl4 catalyst, an organoaluminum compound, and ester compound, etc., and low-stereoregularity PP is removed from the product by using a low-boiling hydrocarbon to obt...

PURPOSE:To cut down the production cost preventing any defective edge touch from happening while improving the production yield and quality level by a method wherein an additional bump if formed on the surface of a bump independent of an internal element connecting to the first bump exceeding the height of a bump electrode. CONSTITUTION:An additional bump 7' is formed on a bump 7 independent of an...

The structure is formed by superposed layers of fibrous reinforcing material, which layers are bound together by threads implanted through the layers by being pushed by a pressurized fluid into a tubular needle which is actuated with back and forth movements during which it penetrates through the superposed layers and is pulled out therefrom, leaving in a portion of binding thread, the next portio...

Aqueous grouting compositions based on high alumina cement have the onset of setting delayed for upwards of one month by the incorporation therein of a set-inhibiting agent such as boric acid or gluconic acid delta lactone and can then be rapidly reactivated for use by the incorporation therein of a reactivator, for example lithium carbonate, to produce a high strength hardened cementitious compos...

A combined hinge and switch assembly comprises a first door plate 12 integrally formed with a sleeve 10 through which passes a pivot pin 3 and a second door frame plate having two lug members pivotable about the pin 3 at two ends of the sleeve 10. The sleeve 10 encloses two electric contact elements 61 and 62 which are mounted therein in a fixed relationship with the plates 12. The relative moveme...

A proppant medium for fractured wells consisting of spheres having a ceramic matrix, said matrix including 15 to 40% of micropores, said spheres having an individual particle bulk density of 2 to 3 grams per cubic centimeter, and said proppant medium having a permeability at 10,000 psi at least 400% greater than that of silica sand proppant media of the same particle size distribution. Such proppa...