WELDING OF COATED METALS The invention provides a method and apparatus for welding together two metal workpieces, at least one of which has thereon a coating material which enters a fluid or visco-elastic phase at a temperature below the melting temperature of the workpieces, the method comprising the steps of subjecting the workpieces to a preliminary preparative treatment at a zone to be welded ...

The invention relates to a process for the production of mouldings having a compact outer layer and a cellular core, for example soft, flexible shoe soles, having a density of from 0.4 to 1.0 g/cm<3>, by reacting a) organic and/or modified organic polyisocyanates with b) at least one high-molecular-weight compound containing at least two reactive hydrogen atoms and, if desired, c) low-molecular-w...

The present invention relates to a method and a device for logging non-eruptive production wells. The process is characterised in that the well is activated in order to bring about the production of effluents, on either side of first measuring means (10), and in that the said measuring means (10) are used to treat at least a part of the effluents originating from the upstream side (18) of the...

In accordance with the present invention, there is provided a bubble-containing ethylene/ alpha -olefin rubber excellent in kneadability, characterized in that the ethylene/ alpha -olefin rubber prepared by copolymerization of 50 - 95 mol% of ethylene, 5 - 50 mol% of alpha -olefin having at least 3 carbon atoms and 0 - 10 mol% of non-conjugated polyene contains 5 - -1000 parts by volume, based on...

The present invention provides a novel method for producing a filler-containing colored thermoplastic resin composition superior in pigment dispersibility and impact resistance. This method comprises melt kneading firstly at least a part of components of resin consisting of a thermoplastic resin (A) and/or a thermoplastic resin composition (B) with fillers (C), adding remainder of the resin, if an...

A PIGMENT MASTER BATCH FOR FILLER-CONTAINING POLYPROPYLENE COMPOSITIONS A pigment master batch suitable for fillercontaining polypropylene compositions is provided. This pigment master batch comprises 100 parts by weight of a propylene homopolymer having a melt flow rate of at least 10 g/10 min. and 30 - 200 parts by weight of a processed pigment prepared by using a metallic salt of a fatty acid, ...

Sealing and/or stabilizing and/or binding preparations comprising modified alkali metal silicate solutions having a molar ratio of SiO2 to Me2O of from 2 to 4.5 wherein Me represents sodium or potassium; sodium metaborate and/or potassium metaborate in a molar ratio of SiO2 to B2O3 of from 5 to 400; and glyoxal, and to the use of these preparations.

Contaminated water is contacted with an agent which contains salts or cations of mono-, di-, or trivalent metals in a maximum amount of 50 masspercent and rock granules containing at least 25 masspercent zeolite, preferably clinoptilolite and/or mordenite. The amount of metal salts respectively cations present in the parent zeolitic rock can be increased according to necessity by ion-exchange, ads...

Starting from warp yarns, typically indigo dyed cotton warp yarns for denim, weft yarn cross-wound bobbins ready for use in a weaving loom are obtained by twice rebeaming. In the first step, intermediate spools (20) with windings of yarn sheaves (14), composed of about 40 individual threads (34), are produced, and the yarns are unmatched in the second step and cross-wound on a spooling frame (42) ...