Methods are disclosed for preparing a highly active solid metallocene-containing catalyst system and its use in the polymerization of olefins. The catalyst system is prepared by creating a catalyst system solution by combining an aluminoxane with a metallocene having a substituent which has olefinic unsaturation in a suitable liquid to form a liquid catalyst system, conducting prepolymerization of...

A process for the production of branched-chain micro-wax and/or micro-wax mixtures with a high isoparaffin content (I) from polypropylene (PP) or PP mixtures by 2-stage cleavage in the absence of oxygen, comprising (a) melting the PP at below 350 deg C and (b) subjecting the melt to cracking at 400-450 deg C with separation of the cleavage products under vacuum, and then subjecting the distillate ...

A mixture for a heat-resistant building component made of light concrete, comprises a base mixture of 70-90 wt.% cement and 10-30 wt.% aluminium hydrosilicate. Also claimed is the mixture production, by dry mixing the components before adding water. Further claimed is a process for processing the mixture by pumping into a mould from the bottom. Preferably the base mixture consists of 85 wt.% cem...

The invention relates to an identification system for slaughter cattle, comprising an electronic code reader and an electronic code carrier (3). The code carrier (3) is designed to be implanted in the body of the animal. The surface of the code carrier unit (3) is at least partially covered with a layer (8) forming undercuts and/or open stitches, into and through which layer the connective tissue ...

A shrinkable film characterized by being made from an .alpha.-olefin/vinyl aromatic random copolymer which comprises 99.9 to 58 mole % of structural units derived from ethylene and 0 to 30 mole % of structural units derived from a C3-C20 .alpha.-olefin (with the sum total of both being 99.9 to 88 mole %) and 0.1 to 12 mole % of structural units derived from an aromatic vinyl compound and which exh...

Process for the production of expandable particles of styrene polymers, having improved processability characteristics, which comprises: i) producing expandable particles of styrene polymers containing from 2 to 20% of an expanding agent incorporated; ii) covering these particles with an antistatic agent in a quantity of less than 1% by weight; iii) vigorously frictioning the particles in a...

A non-woven mat (18) of inorganic fibre is disclosed having a substance which is lower at the edges (26') of the mat than in the remainder (28) of the mat. Apparatus for making such a mat comprises: a source of a slurry of inorganic fibre in a liquid; a forming wire disposed to move past the source, through which the liquid passes to deposit the inorganic fibre on the forming wire; a mask across a...

A system and method for creating, executing, and maintaining shared, automated business processes across distributed organizations comprises capabilities that enable interoperation among heterogeneous information systems. The system includes a plurality of independent communicating subsystems called sites that have a server with common means of representing and executing shared public process defi...

A closed-cell polymer foam having a density of less than 100 kg.m-3 is described. The cells in the foam contain a foam blowing agent comprising (a) a blend of two or more hydrofluorocarbons, (b) a blend comprising a carbon dioxide and one or more hydrofluorocarbons or (c) a blend comprising dimethyl ether and one or more hydrofluorocarbons, and the polymer is a blend comprising at least 50 % by we...

Procédé de traitement physico-chimique d'effluents, notamment d'eaux de surface destinées à la consommation comprenant les étapes successives de coagulation (A), floculation (B) et décantation (C), une masse de contact étant introduite dans l'eau issue de l'étape de coagulation, donc durant l'étape de floculation et cette masse de contact étant constituée par une partie des boues densifiées proven...

This is a braided tubular device used in the occlusion of various lumen or cavities in the body. In particular, it may be used to form an endovascular occlusion. Most desirably, it is braided of a majority of super-elastic alloy ribbons and therefore is both inherently non-stretching and most difficult to permanently deform. It may be deployed using an electrolytically severable joint. A radio-fre...

The method of operating a radiation therapy machine involves causing a source to emit a two dimensional fan beam in one plane. The location of the subject to be treated is movable along a line perpendicular to the plane. An adjustable device for shaping the beam and controlling its intensity is interposed between the subject and the source. A desired shape and intensity distribution for the portio...

A method for producing a noble metal-containing structure on a substrate, and a semiconductor component having such a noble metal-containing structure, include introducing a noble metal into a preliminary structure by converting a gaseous compound of the noble metal with a non-noble metal in a preliminary structure into elementary noble metal and a gaseous compound of the non-noble metal. The proc...

A method of transferring media files over a communications network, typically the Internet. The files are divided by the provider computer into a series of encoded files which are maintained in the provider computer and are transferred over the communications network in a specific sequence to receiving computer. A user loadable program is also maintained in the provider computer and that together ...

PURPOSE:To prevent breakage of a gear in a power transmission in which a thrust load working on a helical gear in a plural pairs of intermediate gears is held by a hydraulic piston by having the hydraulic piston bottom on through an elastic body when oil pressure in the hydraulic piston is lost. CONSTITUTION:In a transmission for an engine of an aircraft or a helicopter, a load is transmitted from...

The present invention relates to hydrogenated block copolymers of butadiene and at least one other diene, preferably isoprene. The copolymer is hydrogenated and comprises at least 10% by weight of at least one crystallizable segment and at least one low crystallinity segment.

The present invention relates to a process for the preparation of vitamin A which consists in placing cyclogeranylsulphone in contact with a C10 aldehyde acetal, in halogenating the derivative obtained and in then removing the halogen group and the sulphone, in removing the acetyl group and in rectifying the retinal obtained.

Printing is conducted at the transparent conducting film unnecessary portion on a substrate 1 with a masking ink having a higher thermal decomposition temperature than that of the transparent conducting film forming composition, and the ink is dried and cured by heat or light to form a masking pattern 2. The portion where a transparent conducting film is to be formed is preferably subjected to ozo...

The invention is directed to an electric appliance for personal use such as a dry shaving apparatus, a hair cutting machine or epilator, having a housing to accommodate an electric motor, a storage cell charging circuitry, at least one rechargeable storage cell designed to be connected to the electric motor, and a connector compartment in which a connector equipped with connector pins is pivotally...

An electric shaver comprises a pivoting swing end, and an oscillator which is coupled to the swing end through a transmission. The transmission transmits a pivotal movement of the swing end to a horizontally reciprocating movement of the oscillator. An inner blade member coupled to the oscillator slidingly engages an outer blade member. Such a structure enables the inner blade member to move smoot...