Abstract:
An electrically heated melting furnace for the Melting of mineral materials, such as frits, (Vitreous) enamels and the like, wherein a bath of molten material (contained in a tank) is heated by means of electrodes contacting the molten material and having a current flowing therethrough which heats the molten material by Joule's heat, wherein a batch is fed onto the melt or molten bath, and the molten product is withdrawn from the bottom of the tank, wherein the furnace space or tank has the cross-section of a regular polygon; and wherein a plurality of heating elements are arranged above the batch material and said heating electrodes are positioned in the lower portion of the molten bath above the tank bottom, and comprising a bottom outlet including a cylindrical portion or element and a further underlying, concentrically disposed, circular disc-shaped or annular portion or element of a refractory material being conductive at high temperature and acting as an electrical conductor, and at least one counter or opposite electrode disposed above the outlet and being immersed into the molten bath, said electrode likewise being connected to the power source.
Abstract:
A method for the melting of glass, wherein a layer or blanket of batch material is fed onto a bath of molten glass, the liquid glass is withdrawn from the bath in a lower position through an opening, and the batch material is subjected to thermal energy from above to melt said batch material providing passing the glass after the melting thereof in a vertically downwardly directed, non-turbulent stream, and additionally heating the glass in said stream by passing electric current therethrough until the final gas removal (refining) is obtained, whereupon the glass is further conducted in vertically downward direction, homogenized in the next lower zone without the supply of energy, and withdrawn from a lower point of said zone and a glass melting furnace for carrying out said method providing a depth of said refining section exceeding the depth of said melting section by about three times.
Abstract:
Racemic and optically active compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, fluorine, chlorine, bromine, iodine or cyano,R.sub.2 is fluorine, trifluoromethyl, nitro or cyano, andR.sub.3 is alkyl of 3 to 5 carbon atoms, hydroxy(alkyl of 3 to 5 carbon atoms), cycloalkyl of 3 to 5 carbon atoms, 1-(3,4-methylenedioxy-phenyl)-2-propyl or 1-(p-hydroxy-phenyl)-2-propyl,And non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as their salts are useful as analgesics, uterospasmolytics, bronchospasmolytics and antispastics for the skeletal musculature, and especially as .beta..sub.2 -receptor mimetics and .beta..sub.1 -receptor blockers.
Abstract:
Glass is melted in a furnace having a melting zone and one or more processing tanks adjacent to the melting zone. Molten glass flows from the melting zone to the processing tank through a passage. A portion of the molten glass is withdrawn from the top of the processing tank and is recirculated to the processing tank or to a separate refining zone. The furnace includes a melting section and at least one adjacent processing tank communicating with the melting section through a passage. A recirculating passage connects the top of the processing tank and the passage connecting the melting section and the processing tank. Additional means are provided to establish a recirculating flow of molten glass via the recirculating passage.
Abstract:
The present invention relates to modified amino acids of general formula wherein A, Z, X, n, m, R, R2, R3, R4 and R11 are defined as in claims 1 to 5, their tautomers, their diastereomers, their enantiomers, the mixtures thereof and the salts thereof, particularly the physiologically acceptable salts thereof with inorganic or organic acids or bases, pharmaceutical compositions containing these compounds, the use thereof and processes for preparing them as well as their use for the production and purification of antibodies and as labelled compounds in RIA- and ELISA assays and as diagnostic or analytical aids in neurotransmitter research.
Abstract:
The present invention relates to phenyl amidines of general formula (I), ##STR1## in which R.sup.1 to R.sup.5 are as defined in claim 1, their tautomers, their stereoisomers and their mixtures and their salts, especially their physiologically acceptable salts with inorganic or organic acids or bases also having valuable pharmacological properties, preferably aggregation-limiting effects, producing them.
Abstract:
The invention relates to biphenyl derivatives of general formula ##STR1## wherein A to E and X are defined as in claim 1, the stereoisomers thereof, including their mixtures and the salts thereof, particularly the physiologically acceptable salts thereof with inorganic or organic acids or bases, which have valuable properties, preferably aggregation-inhibiting effects, pharmaceutical compositions containing these compounds and processes for preparing them.
Abstract:
The invention relates to cyclic urea derivatives of general formula ##STR1## wherein R.sub.a, R.sub.b, X and Y are as defined herein, pharmaceutical compositions containing the derivatives and processes for preparing them.
Abstract:
5-Membered heterocyclic compounds, of which the following compounds are exemplary: (a) 4-��trans-4-(2-carboxyethyl)cyclohexyl!aminocarbonyl!-1-(4-piperidyl)imidazole, (b) 5-��trans-4-(2-carboxyethyl)cyclohexyl!aminocarbonyl!-4-methyl-2-(4-piperidyl)-1,3-thiazole, (c) 5-��4-(carboxymethoxy)phenyl!aminocarbonyl!-4-methyl-2-(4-piperidyl)-1,3-thiazole, (d) 5-��trans-4-(2-carboxyethyl)cyclohexyl!aminocarbonyl!-2-(4-piperidyl)-1,3,4-thiadiazole, (e) 5-��4-(carboxymethoxy)phenyl!aminocarbonyl!-2-(4-piperidyl)-1,3,4-thiadiazole, (f) 5-��trans-4-(carboxymethoxy)cyclohexyl!aminocarbonyl!-2-(4-piperidyl)-1,3-thiazole, (g) 5-��4-(carboxymethoxy)phenyl!aminocarbonyl!-2-(4-piperidyl)-1,3-thiazole, (h) 5-��trans-4-(2-carboxyethyl)cyclohexyl!aminocarbonyl!-2-(4-piperidyl)-1,3-thiazole, and (i) 4-��trans-4-carboxycyclohexyl!aminocarbonyl!-1-�2-(4-piperidyl)ethyl!imidazole. These are useful for the treatment or prevention of illnesses in which relatively small or relatively large cell aggregates occur or cell-matrix interactions play a part.
Abstract:
The invention relates to cyclic imino compounds which have, inter alia, valuable pharmacological properties, especially inhibitory effects on cell aggregation, pharmaceutical compositions which contain these compounds and processes for preparing them.