摘要:
In order to provide an insulating component (1) for the purpose of holding or guiding through an electrical conductor in switchgear assemblies in medium-voltage technology, the insulating component (1) having a nonconductive, rigid insulating body (3) having rigid outer ribs (6) for the purpose of extending the leakage path, which is also suitable for an application outdoors and is likewise cost-effective, it is proposed to apply an outer layer (7) made of oliophobic and/or hydrophobic material.
摘要:
The present invention is directed to a process for simultaneously obtaining pure carbon monoxide and pure hydrogen in a steam reformer plant for hydrogen or ammonia generation, having a primary reformer, a secondary reformer and downstream thereof, a CO conversion stage. A part gas stream of the synthesis gas stream, which is discharged from the secondary reformer having a CO content of between 2 and 20 mol. % and is at a temperature of from 200 to 500.degree. C. and a pressure between 15 and 50 bar, is removed between the secondary reformer and the CO conversion stage. The part gas stream is then is cooled to a temperature below 100.degree. C., thereby condensing out the major part of the steam contained in the gas stream. The remaining raw synthesis gas stream is then guided by way of a multistage gas separation plant in which the gas components H.sub.2, residual steam, CH.sub.4, CO.sub.2 and optionally N.sub.2 are separated, either individually or together, from the CO. The separated gas components are then compressed to a pressure which exceeds the pressure in the CO conversion stage and are recombined to form a mixed gas stream. The mixed gas stream is then guided into the CO conversion stage of the steam reformer after being heated to a temperature of from 200 to 500.degree. C. The remaining pure CO fraction is removed in separate manner and may optionally, be supplied for further processing.
摘要:
Linear, thermoplastic, elastomneric copolymers of carbon monoxide and olefinically unsaturated compounds have an alternating sequence of repeating units and an average molecular weight Mw of the copolymers of from 80,000 to 1,200,000, binary, linear, alternating carbon monoxide/ethylene copolymers being excluded.
摘要:
Polymers and oligomers of olefinically unsaturated C.sub.2 -C.sub.20 -hydrocarbons having one or two 2-oxazolinyl end groups have the structure (I) ##STR1## where A is a polymer or oligomer radical derived from the olefinically unsaturated C.sub.2 -C.sub.20 -hydrocarbons and the radicals R can be identical or different and have the following meanings: hydrogen, C.sub.1 -C.sub.10 -alkyl, C.sub.6 -C.sub.10 -aryl, C.sub.3 -C.sub.6 -cycloalkyl.
摘要:
The invention relates to a cylindrical catalyst body 1 which is characterized in that indentations are provided on the circumferential surface 3 of the catalyst body 1. These indentations are preferably configured as grooves 4 and webs 5 which run parallel to the longitudinal axis 2 of the catalyst body 1.
摘要:
The invention concerns a seatback for a vehicle seat, having an integrated protective device. The protective device includes a device that generates a torque acting in a pivoting direction on an upper back part, a rear-end impact detector that is-in effective connection with the torque-generating device in such a way that the device is activated in the event of the rear-end impact and the pivoting motion is initiated, and an immobilization device for retention of the upper back part in the normal use position.
摘要:
Process for the partial modification of porous, hydrophilitic filter membranes, of filter membranes treated in such manner and filter modules equipped with such filter membranes. When hydrophilic filter membranes are embedded in hydrophobic securing components of filter modules, the membrane filters are hydrophobized beyond the embedding area in an edge region, so that this edge region, that can no longer be wetted by water, forms an air by-pass when the filter modules are tested, rendering thus impossible that the filter modules can be tested. The novel process is intended to modify the edge regions in such a manner that, even after partial areas have been embedded in a hydrophobic polymer material, they remain porous and hydrophilic over the whole of their effective area. The porous filter membranes are soaked in a solution of hydrophilizing agent in the areas intended to be embedded, so that the filter membranes are saturated with solution in the thus predetermined areas, and the thus treated filter membranes are immediately washed and dried. Through this process, the modified edge regions are several times more hydrophilic than the untreated areas in the filter membranes, so that the membrane areas in the filter modules in direct contact with the securing components still remain sufficiently hydrophilic.
摘要:
In the process for the selective hydrogenation of dienes in diene-containing feed streams, a diene-containing feed stream is hydrogenated over a nickel-containing precipitated catalyst at from 40 to 100.degree. C., a pressure of from 3 to 20 bar and a WHSV (weight hourly space velocity) of from 1 to 10 kg/(l.times.h) in the presence of free hydrogen.
摘要:
Copolymer comprising ethylene units and vinyl formate units, the content of free vinyl formate in the polymer preferably being not more than 5000 ppm, based on the weight of the copolymer, a process for its preparation, and its use as flow improver, especially in petroleum distillates, preferably fuel and propellant compositions, especially petroleum middle distillates, and also a fuel and propellant composition comprising a principal quantity of a fuel and propellant and that quantity of a copolymer as above which is effective in improving the flow properties.
摘要:
Reaction products of polyolefins having predominantly a terminal double bond and a number average molecular weight of from 250 to 10,000, which possess an aliphatic hydrocarbon skeleton which is straight-chain or carries C.sub.1 -C.sub.4 -alkyl side chains, with from 1 to 10 mol, per equivalent of double bond, of one or more vinyl esters I ##STR1## are obtainable by reacting the stated polyolefins with the vinyl esters I in the presence of a free radical initiator at from 80 to 200.degree. C., it being possible for these reaction products subsequently to have been hydrolyzed to the corresponding alcohols or converted into the corresponding amines by reductive amination with amines II ##STR2## .