The invention concerns a method for manufacturing of square pipes from coated steel strips. Both sides of the strip are coated with metal, say zinc or aluminium. The strips also can be industrially painted e.g. with PVC-plastics directly upon the steel surface or upon the metal-coated surface. The shaping is carried out in a continuous roller shaping device by at first shaping a profile (6) with a...

The operator (P) spreads out the large tobacco leaves individually on a first conveyor belt (I). At the end of the input belt, radial cylinders (10) on a carousel (12) pick up the leaves one at a time. Each cylinder passes under an optical scanning system (2) measures the size and shape of the leaf and sends the data to a computerised control unit (VII). - Each leaf passes under a laser cutting de...

PURPOSE:To simply each flow of regulation and to carry out rapid regulation by controlling plural lower controllers by one upper controller. CONSTITUTION:An upper controller 30 orders a lower controller 29 or a middle controller 28, monitors the regulation state and judges whether actuators 11, 13, 15, 17, 19 and 21 are normally operated and the control state is good or not. Therefore, output sign...

A novel process is described herein for the efficient production of N,N-diallyldichloroacetamide by reaction of diallylamine and dichloroacetyl chloride. The process comprises admixing an excess of diallylamine with sufficient strong aqueous sodium hydroxide such that at all times during the reaction, the pH of the reaction mixture remains above a pH of 10, then slowly adding dichloroacetyl chlori...

PURPOSE:To provide the title dilator swelling uniformly at a high speed and preventing the damage of the affected part by mixing a fine powdery water absorbable resin having a specific particle size with a thermoplastic resin or elastomer and molding the resulting mixture into a substantially cylindrical shape having specific Shore D hardness. CONSTITUTION:A fine powdery water absorbable resin hav...

Generally closed cell phenolic foams are prepared which have a K-factor of less than 0.029, watt/(m.K) preferably from 0.017 to 0.024 watt/(m.K) of foam thickness when mesured at 24 Centrigrade. The foams are prepared from a resole resin which has been stripped to a water level of less than 7 percent by weight, preferably from 3 to about 6 percent by weight based on resin weight. A viscosity ad...

Preparations of insoluble colorants, especially pigments, are obtained by distributing the colorant in molten polypropylene wax having a viscosity of 0.5 to 5 Pa.s, determined at 170 DEG C., and an isotactic proportion of 40 to 90% by weight. These preparations are easily dispersible in polyolefins and especially useful for dyeing polypropylene in the mass.

In a process for producing coatings adhering to the surface while being removable, a treatment liquid is produced from PUR elastomers enabling a thermoplastic treatment by admixing a solvent. Said treatment liquid, fluid or viscous depending on the mixture ratio, is applied to the surface and forms after evaporation of the solvent a coating adhering solidly to the surface while being completely re...

A composite comprises a coating which is adhered to a highly saturated elastomer having a corona discharge activated surface which is chemically fixed by a halogenating agent. A coating such as a paint, a weather-resistant film, etc., or an adhesive layer, is adhered to the activated and fixed surface. Various halogenating agents include N-halohydantoins, N-halo-imides, N-haloamides, aqueous chlor...

3-[(Z)-1-Propen-1-yl]-7-acylamido cephalosporins in which the 7-acyl group is phenylglycyl or substituted phenylglycyl are orally active antibiotics against Gram+ and Gram- bacteria.

Dental compositions having improved color stability are prepared by employing a redox catalyst system consisting of a hydroperoxide oxidizing agent and a substituted thiourea reducing agent. The composition also comprises a methacrylate monomer, and optionally, a filler and a coupling agent.

PURPOSE:To perform loading and storing operation efficiently in the processing of vector data by providing a counter which conuts up in reading an element out of an indirect address vector register and counts down at a memory request based upon the element. CONSTITUTION:A list vector is processed on pipeline basis, and a series of processes checks the validity of a read of a vector register (VR), ...

Retroreflective materials are made by coating glass particles with both hydrophobic polymers and coupling agents or with siloxane compounds which have both hydrophobic side chains and coupling-type side chains capable of chemically bonding to, or of forming loose associations with, a wide variety of materials.

PCT No. PCT/FR87/00504 Sec. 371 Date Oct. 6, 1988 Sec. 102(e) Date Oct. 6, 1988 PCT Filed Dec. 16, 1987 PCT Pub. No. WO88/04757 PCT Pub. Date Jun. 30, 1988.The independent unit for heat exchange particularly for the ventilation of a room or premises is configured like a box (12) wherein are formed two passages (40 and 42) having an undulated shape and wherein circulate in counter-current air drawn...

PURPOSE: To easily restart a clock and a processor at the time of the correction of an error state by placing a system to a known state before a system clock is stopped at the time of detecting error conditions. CONSTITUTION: An input/output control processor(IOCP) 22 is provided with an input/output engine(IOE) element 28, an input/output queue (IOQ) element 30 and a secondary clock maintaining (...

An improved apparatus and method for burning liquid fuel or atomizing liquid are disclosed for use in fuel burners or atomizers of the type which comprise a hollow atomizer bulb (20) having a smooth, preferably convex exterior surface (22) which tapers toward a small aperture (14) through which high pressure air or other gas is forced to atomize liquid as it flows in a thin film over the exterior ...

A disk storage system is disclosed comprising a rotatable disk, a cooperating magnetic head, positioning apparatus for positioning the head at different radial positions of the disk for reading and/or writing data on the disk, a baseplate for supporting the above, and control circuitry for preventing oscillation build-up in the baseplate from deleteriously interfering with system performance. The ...

Hydraulic high density cement slurry, especially for cementation of oil/gas-wells. The slurry contains 30-45 weight % microsilica based on the cement weight and water to a density of 1.9-3.5 g/cm3. If desired there can be added dispersant, retarder and weighting agent. Microsilica acts as a fluid-loss preventing agent. The addition of microsilica prevents strength retrogression at temperatures abo...

This invention relates to a process for encapsulating an active ingredient, which comprises preparing a solution or dispersion of the active ingredient in molten fatty acid or fatty acid derivative and spraying the dispersion into a gas stream having a temperature below the melting point of the molten fatty acid or fatty acid derivative to form particles having a particle size of at least 100 mu ...

A prosthetic, resorbable meniscus arid method of its fabrication are disclosed. The prosthetic meniscus can be implanted in a human knee where it can act as a scaffold for regrowth of native meniscal tissues. The meniscus comprises a dry, porous, matrix of biocompatible and bioresorbable fibers, at least a portion of which may be crosslinked. The fibers include natural polymers or analogs or fixtu...