Abstract: The method of and device for controlling the roll exchanging operation in an unrolling device includes the provision of a set of control numbers computed from the counted number of revolutions of the old roll and from the length of the withdrawn web prior to the initiation of the roll exchanging operation; the control numbers are computed from two intervals of the measured web length, from corresponding intervals of the counted number of revolutions, from the thickness of the web, from the feeding speed of the web, from the time constents of the control elements of the roll exchanging device, from the length of the adhesive leading edge of the new roll, from the desired length of the residual trailing end portion of the old web and from the diameter of the supporting central reel; computed control numbers are stored and compared in a comparator with the actual number of revolutions of the old roll whereby the coincidence of the actual number with the stored number generates in a control unit a control signal

Abstract: The present invention relates to basically substituted indole derivatives and to a process for their manufacture.The novel compounds are valuable medicaments which exhibit hypotensive and antiarrhythmic activity on the cardiac circulation system.

Abstract: The invention relates to 3,4-Dihydro-2H-isoquinoline-1-ones and a process for preparing them.The compounds have an antiarrhythmic activity and are suitable for treating disturbance of the cardiac rhythm.

Abstract: 1,4-Dihydro-2H-isoquinoline derivatives of the general formula 1 ##STR1## in which R.sup.1 represents hydrogen or straight chain or branched alkyl of 1 to 6 carbon atoms,R.sup.2 represents low molecular dialkylaminoalkyl, in which both alkyl groups of the dialkylamino group together with the nitrogen atom may also form a 5-, 6- or 7-membered saturated ring in which one carbon atom may be substituted by an oxygen atom, a sulfur atom or another nitrogen atom which may be substituted by hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl, or R.sup.1 and R.sup.2 together may form a 5-or 6-membered saturated ring containing 1 nitrogen atom,R.sup.3 represents phenyl which may be mono- or di-substituted by halogen, nitro, amino or sulfamoyl, or acylamino or alkyl each containing 1 to 4 carbon atoms, or pyridylR.sup.4 andR.sup.5, which may identical or different, represent hydrogen or alkoxy of 1 to 4 carbon atoms, andX represent oxygen or sulfur,Their physiologically tolerated salts, process for preparing them.

Abstract: 1,4-Dihydro-2H-isoquinoline derivatives of the general formula I ##STR1## in which R.sup.1 represents hydrogen or straight chain or branched alkyl of 1 to 6 carbon atoms,R.sup.2 represents low molecular dialkylaminoalkyl, in which both alkyl groups of the dialkylamino group together with the nitrogen atom may also form a 5-, 6- or 7-membered saturated ring in which one carbon atom may be substituted by an oxygen atom, a sulfur atom or another nitrogen atom which may be substituted by hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl, or R.sup.1 and R.sup.2 together may form a 5- or 6-membered saturated ring containing 1 nitrogen atom,R.sup.3 represents phenyl which may be mono- or di-substituted by halogen, nitro, amino or sulfamoyl, or acylamino or alkyl each containing 1 to 4 carbon atoms, or pyridyl,R.sup.4 and R.sup.5, which may identical or different, represent hydrogen or alkoxy of 1 to 4 carbon atoms, andX represent oxygen or sulfur,Their physiologically tolerated salts, process for preparing them.

Abstract: In the removal of water from a gas by contact with sulfuric acid, the improvement which comprises supplying the sulfuric acid in finely divided form having a surface of about 10.sup.4 to 10.sup.7 m.sup.2 /h at a concentration of about 95 to 99% and a temperature of about 35.degree. to 80.degree. C and with a contact time of about 0.2 to 2 seconds, whereby the residual moisture content of the gas is reduced to about 30 to 250 mg of H.sub.2 O/Nm.sup.3. Preferably the sulfuric acid is sprayed through a constriction into a vessel through which the gas is passed. The large sulfuric acid surface area permits high levels of dehydration to be achieved with far less sulfuric acid than heretofore believed possible and with small vessels and minimal contact times. Contact may be effected serially in several stages with the spent acids combined, brought up to initial concentration and recirculated.

Abstract: The invention relates to 3,4-dihydro-2H-isoquinolin-1-thiones and a process for preparing them.The compounds have an antiarrhythmic activity and are suitable for treating disturbance of the cardiac rhythm.

Abstract: In the processing of a corrosive liquid mixture, such as 50 to 80% aqueous sulfuric acid, by its passage over one surface of a wall of inert heat resistant material, and heating the other surface of said wall, thereby to evaporate from said corrosive liquid mixture the more volatile component thereof, the improvement which comprises heating said wall by contact with an inert liquid material, and heating said inert liquid material indirectly through heat exchange with a normally solid molten material. Desirably the wall of inert material is a pipe surrounded by a molten metal in a first annular jacket and a molten salt in a second annular jacket.

Abstract: 1,4-Dihydro-2H-isoquinoline derivatives of the general formula I ##SPC1##in whichR.sup.1 represents hydrogen or straight chain or branched alkyl of 1 to 6 carbon atoms,R.sup.2 represents low molecular dialkylaminoalkyl, in which both alkyl groups of the dialkylamino group together with the nitrogen atom may also form a 5-, 6- or 7-membered saturated ring in which one carbon atom may be substituted by an oxygen atom, a sulfur atom or another nitrogen atom which may be substituted by hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl, or R.sup.1 and R.sup.2 together may form a 5- or 6-membered saturated ring containing 1 nitrogen atom,R.sup.3 represents phenyl which may be mono- or di-substituted by halogen, nitro, amino or sulfamoyl, or acylamino or alkyl each containing 1 to 4 carbon atoms, or pyridylR.sup.4 andR.sup.5, which may identical or different, represent hydrogen or alkoxy of 1 to 4 carbon atoms, andX represent oxygen or sulfur,Their physiologically tolerated salts, process for preparing them.

Abstract: In the processing of a corrosive liquid mixture, such as 50 to 80% aqueous sulfuric acid, by its passage over one surface of a wall of inert heat resistant material, and heating the other surface of said wall, thereby to evaporate from said corrosive liquid mixture the more volatile component thereof, the improvement which comprises heating said wall by contact with an inert liquid material, and heating said inert liquid material indirectly through heat exchange with a normally solid molten material. Desirably the wall of inert material is a pipe surrounded by a molten metal in a first annular jacket and a molten salt in a second annular jacket.

Abstract: New 2-amino-2-oxazolines and their salts with physiologically tolerated acids which may be used as medicaments, in particular as antihypotonics, diuretics or antiphlogistics, and process for preparing them.