Abstract: The invention concerns a process to recover paint from overspray whereby one collects paint which misses the target object by means of a collector device which is flushed on all side and floor surfaces with circulating water, concentrates the overspray extracted in the overspray-circulating water mixture from the collector device to an overspray content of approx 20%, then feeds the mixture to a filtration chamber in which the water is separated from the reclaimed raw paint, then measures the physical characteristics of the reclaimed paint, compares these with the physical characteristics of the fresh paint, then adjusts the characteristics of the reclaimed paint to the characteristics of the fresh paint material and mixes the reclaimed paint into the fresh paint. The invention also concerns as device to carry out the process.

Abstract: A multiprocessor system having a memory-programmable control of the type having a processor unit, coupling memories and input and output modules for transferring signals to and from a process which is to be controlled. Each processor unit is provided with a subprogram and a data memory which can be accessed directly, and a bus control unit releases access to the common system bus always for only one of the processor units. The access sequence and the access duration of the individual processor units to the common bus, via which the signals run to and from the controlled process, are fixed in a bus assignment matrix. In this manner, simple synchronization of the processor units is achieved. Moreover, guaranteed reaction times with respect to the process are possible.

Abstract: Reaction mixtures which are obtained on hydroformylation or carbonylation of olefinically unsaturated compounds and which contain dissolved non-volatile complex compounds of metals of group VIII of the periodic table are worked up by a method wherein the products, after distillative removal of low-boiling constituents alone, or of these constituents plus a part of the high-boiling residue, or a part of the high-boiling residue after distillative removal of the desired products, are or is extracted with carbon dioxide, a C.sub.2 -C.sub.4 -paraffin, a C.sub.2 -C.sub.4 -olefin or a normally gaseous halohydrocarbon at above the critical temperature and above the critical pressure of these (extractant) compounds.

Abstract: Pure monoesters of adipic acid are prepared by a process in which(a) a pentenoate is reacted with carbon monoxide and hydrogen at from 90.degree. to 140.degree. C. and under from 5 to 300 bar in the presence of a carbonyl complex of cobalt or of rhodium, and a 5-formylvalerate is separated off, and(b) the 5-formylvalerate thus obtained is oxidized with molecular oxygen, or with a gas containing this, at from 20.degree. to 100.degree. C. under from 1 to 10 bar.

Abstract: Olefinically unsaturated compounds are continuously hydroformylated under from 2 to 30 bar and at from 80.degree. to 130.degree. C. using, as a catalyst, a rhodium complex which contains, as ligands, sparingly volatile compounds of the general formula I ##STR1## where A is phosphorus, arsenic, antimony or bismuth and R.sup.1, R.sup.2 and R.sup.3 are each organic radicals, by a method in which the hydroformylation mixture consisting of liquid and gaseous components is removed from the reactor and is subjected to relatively high temperatures and/or relatively low pressures for a short time in a devolatilization column, the mixture at the same time being separated into a gas phase and a liquid phase, the gas phase is separated into the product and the recycle gas in a separator, and the recycle gas and the liquid phase from the devolatilization column are recycled to the reactor.

Abstract: The invention concerns a device for the receiving, moving and radiation-shielding of vessels filled with expended reactor fuel elements. The device consists of a protective container having a base, a cylindrical protective jacket and a cover made from concrete. At the lower rim of the jacket there are lateral air ducts which open into the annular space between protective jacket and fuel element vessel. In the area of the upper jacket edge, lateral air outlet ducts are provided. For facilitating the loading of the device with fuel element containers and its transportation, the base is constructed in the form of a separate movable pallet. The fuel element container can be placed on this pallet, and the protective jacket over it. The air outlet ducts in the area of the cover are arranged in an inclined or angular fashion. The base is provided with a raised center platform for supporting the fuel element vessel.

Abstract: A process for hydroformylating olefinically unsaturated compounds by means of rhodium/triphenylphosphine/carbonyl complexes formed in situ from rhodium acetate, triphenylphosphine and carbon monoxide, wherein the hydroformylation reaction is preceded by a starting phase in which the mixture of the hydroformylation medium, the triphenylphosphine and rhodium acetate is heated at from 90.degree. to 120.degree. C. under a CO/H.sub.2 pressure of from 5 to 20 bar and the acetic acid liberated is discharged from the reactor in gaseous form in a stream of CO and H.sub.2, until virtually no more acetic acid can be detected in this gaseous discharge.

Abstract: The present invention is directed to a process for the production of N,O-disubstituted urethanes comprising reacting N-mono- or N,N'-disubstituted ureas or linear polyureas with aliphatic carbonic esters.

Abstract: Aldehydes are prepared by hydroformylating the corresponding olefinically unsaturated compounds with the aid of rhodium-carbonyl complexes which contain tertiary phosphines as ligands, by carrying out the reaction in the presence of compounds of copper, silver or zinc which are soluble in the reaction mixture and do not contain any component which deactivates the rhodium-carbonyl complexes.

Abstract: Pourable particulate material is accommodated in a vessel. A stream of gaseous fluid is directed into the lower end of the vessel and is split up into a high-speed first flow and a second flow. The material surrounding the bottom end of a central upright unobstructed passage in the vessel is entrained by the first flow and conveyed upwardly to be deposited on top of the body of material in the vessel; since new material from the body slides down about the lower end to be entrained in this manner, the body of material is gradually turned over in the vessel. The lower-speed second flow is directed through the body of material outside the passage to trickle through the material and subject the same to a treatment.

Abstract: A method and an apparatus for measuring the grain-size of powders by measuring the changes in concentration of sedimentation liquids in a centrifugal field, wherein the displacement of two interconnected floats is measured in two separate sedimentation vessels.

Abstract: This invention relates to an arrangement for separating for films, droplets and sprays from pipe-borne gas flows wherein a pipe is provided with a cross-sectional constriction adapted to accelerate the gas flow in the pipe and annular stripping slot having an annular baffle surface and communicating with a collecting trap, the annular baffle surface being adapted to receive the liquid-containing gas flow and to cause the flow to pass into the collecting trap.