Abstract: A method for carrying out maintenance or service operations on machines, includes transmitting data for a maintenance or service requirement by the computer of the machine over a publicly accessible communications network to a management computer. The management computer checks the status of the machine through the computer of the machine for permissible authorizations. The corresponding service or maintenance operations are carried out on the basis of the authorization of the machine detected by the management computer. The service or maintenance requirement can also be reported by the computer of the machine over the publicly accessible communications network to the management computer, and the management computer can create a checklist for processing the required service and maintenance measures, on the basis of at least one error message received, and can transmit it to the computer of the machine. A system is also provided for carrying out the method.

Abstract: An electrical voltage supply device for machines processing printing material includes at least one drive motor for the transport of printing material and at least one further electrical consumer. A control unit is provided which, when the supply voltage drops below a minimum acceptable supply voltage of the machine processing printing material, switches of electrical consumers which are not required for the transport of printing material and supplies the drive motor for the transport of printing material from energy stored in the moving masses of the machine processing printing material.

Abstract: A method for carrying out maintenance or service operations on machines, includes transmitting data for a maintenance or service requirement by the computer of the machine over a publicly accessible communications network to a management computer. The management computer checks the status of the machine through the computer of the machine for permissible authorizations. The corresponding service or maintenance operations are carried out on the basis of the authorization of the machine detected by the management computer. The service or maintenance requirement can also be reported by the computer of the machine over the publicly accessible communications network to the management computer, and the management computer can create a checklist for processing the required service and maintenance measures, on the basis of at least one error message received, and can transmit it to the computer of the machine. A system is also provided for carrying out the method.

Abstract: A method of metering dampening solution when printing with a printing form for offset printing, including, with a control device, setting an amount of dampening solution on the surface of the printing form to a predetermined value before starting to print, further includes, following one interruption in the printing, determining the number of interruptions which have occurred previously in a predefined time interval, and varying in accordance with the number of interruptions the amount of dampening solution supplied to the surface of the printing form during the one interruption.

Abstract: Cassette for a magazine for automatically changing printing plates, the cassette being formed for receiving therein a plurality of printing plates with respective spacer elements disposed therebetween, and the printing plates being removable sequentially from the cassette, includes a device located in a marginal region of the cassette for swivellably mounting the spacer elements so that the spacer elements are swivellable out of operative range of the respective printing plates when the printing plates are being removed from the cassette.

Abstract: Impact resistant thermoplastic molding materials containing a styrene polymer modified with rubber to be impact resistant, a hydrogenated styrene containing block copolymer and a polyphenylene ether as well as optional additives in which 50 to 98 percent by weight of the particles of the flexible component of the impact resistant styrene polymer have an average particle diameter of equal to or less than 1.0 micron and 2 to 50 percent by weight of the particles of the flexible have an average particle diameter of equal to or greater than 2 microns.

Abstract: A layer of electrically conductive polymers is applied by a process in which carbon fibers of filaments or sheet-like structures of carbon fibers or filaments are coated with sulfonic acids of phthalocyanines or porphyrins, the filaments treated in this manner are made the anode in a solution which contains monomers from the class consisting of the 5-membered heterocycles, and the monomers are anodically polymerized so that a conductive layer is formed on the fibers, filaments or sheet-like structures.

Abstract: A thermoplastic molding material based on a styrene polymer which has been made impact-resistant, and on a polyphenylene ether, wherein the impact-resistant styrene polymer comprises a soft component which has a mean particle diameter of greater than 0.3 .mu.m and contains an acrylic ester polymer as the elastomeric component. The novel molding materials possess improved flow and give moldings having improved aging resistance.

Abstract: The invention relates to a process for the manufacture of a mixture of a polycarbonate and a styrene-containing polymer whereby the polycarbonate present in solution is initially brought into contact with a precipitating agent. The solvent and the precipitating agent are subsequently separated from the precipitated solid material to prepare a polycarbonate having residual moisture of more than 1 and less than 50 percent by weight relative to the polycarbonate, and where the resultant product with a residual moisture is mixed with the styrene-containing polymer at temperatures above the softening range of the components removing volatile components. The claimed mixtures are suitable for the manufacture of molded parts for cars, bottles and appliances.

Abstract: Transparent, impact-resistant thermoplastic molding materials produced from a rigid methylmethacrylate polymer A, a rigid styrene-acrylonitrile polymer B and a flexible graft copolymer C, made from grafting an alkylmethacrylate and optionally styrene onto a rubber grafting base.

Abstract: Mixtures based on vinyl chloride polymers and small amounts of a copolymer of an ester of acrylic acid or methacrylic acid. The said copolymer contains acrylic acid ester or methacrylic acid ester units, units which contain a lactone ring structure, and, optionally, units of other copolymerizable monomers. The mixtures exhibit improved processability and may in particular be used for the manufacture of films, sheets and the like.

Abstract: Polyurethane compositions -- which may or may not be foamed -- having improved mechanical properties are manufactured from organic polyisocyanates, polyhydroxy compounds and one or more at least partially crosslinked, particulate polymers of particle size from 500 to 5,000 A, of which polymer from 1 to 40% by weight are dispersed in the polyhydroxy compound.

Abstract: Mixtures based on vinyl chloride polymers and small amounts of copolymer of an ester of acrylic acid or methacrylic acid, which mixtures have been obtained by polymerization of vinyl chloride in the presence of the above copolymer. The said copolymer contains acrylic acid ester or methacrylic acid ester units, units which contain a lactone ring structure, and, optionally, units of other copolymerizable monomers. The mixtures exhibit improved processability and may in particular be used for the manufacture of films, sheets and the like.