Abstract: This invention relates to an aqueous coating composition based on epoxy resins for coating plastic substrates. It contains7.5 to 25 wt. % of one or more epoxy resins1.5 to 10 wt. % of one or more water-miscible polyamines0 to 10 wt. % of one or more chlorinated and/or non-chlorinated polyolefins1 to 35 wt. % of electrically conductive pigments and/or extenders5 to 25 wt. % of one or more organic solvents and35 to 60 wt. % of waterwherein the sum of the above-stated constituents amounts to 100 wt. % and the coating composition additionally contains conventional lacquer additives, pigments and/or extenders and optionally further binders.

Abstract: Aqueous two-component coating agents contain 7.5 to 25 wt. % of at least one epoxide resin in the form of a dispersion, with respect to the resin solids, 1.5 to 15 wt. % of at least one water-miscible polyamine, 2 to 15 wt. % of at least one chlorinated polyolefin with a degree of chlorination of 15 to 40 wt. %, 0 to less than 5 wt. % of one or more organic solvents, 35 to 85 wt. % of water, and conventional lacquer additives, pigments and fillers. The coating agents are suitable for use in processes for coating plastic substrates, in particular polyolefin substrates.

Abstract: The invention is directed to an aqueous coating composition composed of chlorinated polyolefins and one or more water-borne, self-emulsifying epoxy resins. The epoxy resin is formed from a combination of aromatic polyols, diepoxy compounds and a condensation product formed from diepoxy compounds and aliphatic polyols. The composition is free of emulsifiers yet forms homogenous mixtures in aqueous media. The composition exhibits strong bonding to plastic substrates.

Abstract: Two component-coating agents and emulsions which can be used for their preparation. The coating agents contain:A) 10 to 40 wt.-% of one or more polyols having a number average molecular weight (Mn) of 500 to 200000, an OH-number of 15 to 300 and a content of ionic groups and/or groups convertible into ionic groups of 5 to 400 meq/100 g solid resin, which are at least partly neutralized,B) 0.5 to 10 wt.-% of one of more chlorinated polyolefines having a chlorine content of 15 to 35 wt.-%,C) 5 to 40 wt.-% of one or more aromatic solvents having a boiling range from 100.degree. to 160.degree. C.,D) 25 to 75 wt.-% of water,E) 0 to 30 wt.-% of one or more further water dilutable binders which are free from groups reactive with NCO,the percentages by weight of components A) to E) adding up to 100 wt.-% andF) one or more polyisocyanates having on average at least two free isocyanate groups per molecule, in such an amount that the ratio of the number of reactive isocyanate groups to the OH-groups of the polyols is 0.

Abstract: Process for multilayer-lacquering of a substrate in which the outermost layer is prepared by use of a lacquer containing one or several cationic binding agents. It is possible to apply top coat and clear lacquer films based on cationic binding agents.

Abstract: An aqueous coating agent on the basis of one or more polyols having ionic groups or groups convertible into ionic groups, which can contain pigments, fillers and/or optional conventional lacquer adjuvants and/or solvents, comprisingA) 10 to 40 wt.-% of one or more polyols having a number-average molecular weight (Mn) of 500 to 200000, an OH-number of 15 to 300 and a content of ionic groups and/or groups convertible into ionic groups of 5 to 400 meq/100 g solid resin, which are at least partly neutralized,B) 0.5 to 10 wt.-% of one or more chlorinated polyolefines having a chlorine content of 15 to 35 wt.-%,C) 5 to 40 wt.-% of one or more aromatic solvents having a boiling range from 100.degree. to 160.degree. C.,D) 25 to 75 wt.-% of water,E) 0 to 30 wt.-% of one or more further water dilutable binders which are free from groups reactive with NCO,the percentages by weight of components A) to E) adding up to 100 wt.

Abstract: Chiral substituted tartarimides, a process for their preparation and their use as doping agents in liquid-crystal mixtures.The new chiral N-substituted tartarimides which are esterified on both of the OH groups (pyrrolidinediones) are characterized by the general formula (I) ##STR1## in which the symbols have the following meaning: R.sup.2 denotes linear or branched (C.sub.1 -C.sub.16)-alkyl, it being possible for one or two non-adjacent CH.sub.2 groups to be replaced by O or S, or, if n1=1, also denotes F, Cl, Br or CN,A.sup.1 and A.sup.2 independently of one another denote 1,4-phenylene, diazine-2,5-diyl, diazine-3,6-diyl, 1,4-cyclohexylene, 1,3-dioxane-2,5-diyl, 1,3-dithiane-2,5-diyl or 1,4-bicyclo(2,2,2)octylene, it being also possible for these groups to be at least monosubstituted by F, Cl, Br, CN and/or (C.sub.1 -C.sub.12)-alkyl (if appropriate one or two non-adjacent CH.sub.2 groups are replaced by O atoms),denotes CO--O, O--CO, CH.sub.2 --CH.sub.2, OCH.sub.2, CH.sub.2 O, CH.dbd.N, N.dbd.CH or N.dbd.

Abstract: The conveyor apparatus is connecting a cutter, by means of which sheet metal blanks are produced in adjacent rows, to the magazine of a can welding apparatus which produces from the sheet metal blanks can bodies. A row of adjacently arranged depositing receptacles for receipt of at least one sheet metal blank each is located along the cutter on a frame. Two conveyor chains having dogs move along the depositing receptacles of which each presents a bottom surface which rises in the direction of transport such that the dogs push the sheet metal blanks from one to the next depositing receptacle and accordingly collect the sheet metal blanks out of all depositing receptacles such to form a pile at the end. Such pile is taken over at the end of the path of transport of the conveyer chains by a further conveyer means in form of elastically supported pawls.

Abstract: Two similar machines are arranged on a preferably common floor frame can be individually laterally dislocated by suitable means from a normal operating position into a non-operative position. This arrangement allows an extremely compact arrangement of the machines for the normal operation and due to the simple lateral displacing a position of the machines is made possible which allows access to all parts of the machines. The other machine may, if desired, continue its operation without any interruption.

Abstract: A can body made of a sheet metal blank has a tear strip extending between opposite ends of the blank and into a tongue extending from one blank edge. An overlapping portion at overlapping ends of the blank is completely welded, and the tongue width is greater than the strip width to assure tendency of rupture of the can body from opposite side edges of the tongue toward the strip to avoid premature breaking of the strip.

Abstract: The invention relates to an anode disc for a rotary-anode X-ray tube which consists of a rotationally-symmetrical body of molybdenum and a corresponding body of graphite. The connection zone between the two bodies is smaller than the inner diameter of the focal path. Thanks to this construction the connection zone between the two bodies will not be thermally overloaded.

Abstract: An electric resistance seam welding method and apparatus includes a continuous wire electrode which is passed successively over a first electrode reel and thereafter over a second electrode reel via a plurality of guide and deflection rollers, the outer surfaces of the wire confronting each other when passing over the reels and being pressed together by the reels by a predetermined welding force against interposed workpieces to be seam welded together. An electric current is applied so as to pass from the second electrode reel to the first reel through the wire electrode and the interposed workpieces, and the wire electrode is motor driven for feeding the workpieces through the reels. A copper wire is utilized as the wire electrode and has a tensile strength at the elastic limit of between 11 and 13 kg-f/mm.sup.2 and has a percentage elongation at break of 26 to 17%. The reels are pressed together by a force of 60 to 70 kg, and the copper wire is subject to a tensile stress of less than 10 kg-f/mm.sup.

Abstract: A dental tomography apparatus comprises three drive motors for displacing the film and the X-ray source in two mutually perpendicular directions in a horizontal plane and for pivoting the carrier which connects the film and the X-ray source. The control signals for the motor drives are derived from the contour of the dentition by means of a plate which is covered by contacts on which the patient exerts a pressure by biting, so that the contacts whose position corresponds to the shape of the dentition are actuated. Therefrom, the contour of the dentition is determined by an arithmetic unit which supplies the control signals for the drive motors.

Abstract: A welder for welding side seams of tubular bodies. The welder has a body feed in the form of a single conveyor which serves to receive bodies at regular intervals from a rounded unseamed tubular body supply and to move the bodies into a welding head nip with the bodies being initially widely spaced and then the gap between a body in the welding head and a trailing body being rapidly reduced so that the leading edge of a following body enters into the nip at the same moment as the trailing edge of a leading body begins to depart from the nip, with the adjacent edges of adjacent bodies being in substantially touching but positively spaced relation.

Abstract: An electrode roll-welding arrangement for a resistance roll-welding machine comprising a welding arm adapted to be supported at a machine frame and an electrode roll mounted at an end of the welding arm, the electrode roll being supplied with the welding current by means of the welding arm acting as an electrical conductor and a shaft of the electrode roll mounted in such welding arm. The end of the welding arm receiving the electrode roll is bifurcated or fork-shaped and embodies two fork-like or bifurcated leg members situated essentially in parallelism and opposite one another, each bifurcated leg member having a slot which opens towards the front side or face of the end of the welding arm. Each such slot has at its inward or proximal slot end a bearing cradle for the reception of the shaft of the electrode roll.

Abstract: A one-piece anode disc for a rotary anode X-ray tube is provided with a groove in the immediate vicinity of each side of the focal path to reduce thermal stresses in the path.