Abstract: Methods and intermediates for synthesizing triethylenetetramine and salts thereof, as well as novel triethylenetetramine salts and their crystal structure, and triethylenetetramine salts of high purity.

Abstract: The present invention relates to a process for the preparation of particular 2-(2H-[1,2,3]triazol-2-yl)-benzoic acid derivatives of formula (I) to certain crystalline forms of potassium salts of said 2-(2H-[1,2,3]triazol-2-yl)-benzoic acid derivatives of formula (IK), to certain crystalline forms of said 2-(2H-[1,2,3]triazol-2-yl)-benzoic acid derivatives of formula (I), and to their use in the preparation of pharmaceuticals such as (S)-(2-(5-chloro-4-methyl-1H-benzo[d]imidazol-2-yl)-2-methylpyrrolidin-1-yl)-(5-methoxy-2-(2H-1,2,3-triazol-2-yl)phenyl)methanone.

Abstract: A method for operating an internal combustion engine having an engine with a first number of cylinders and a second number of cylinders and a supercharger arrangement, wherein a charge air flow supplied to the engine is compressed by means of at least one compressor and at least one turbine is acted on by an exhaust gas flow discharged from the engine. In a main operating mode, the engine operates the first number of cylinders in two-stroke operation and the second number of cylinders in four-stroke operation. A scavenging gradient of the engine is greater for the cylinders operated in the two-stroke operation than for the cylinders operated in the four-stroke operation.

Abstract: The present invention relates to a process for the preparation of particular 2-(2H-[1,2,3]triazol-2-yl)-benzoic acid derivatives of formula (I) to certain crystalline forms of potassium salts of said 2-(2H-[1,2,3]triazol-2-yl)-benzoic acid derivatives of formula (IK), to certain crystalline forms of said 2-(2H-[1,2,3]triazol-2-yl)-benzoic acid derivatives of formula (I), and to their use in the preparation of pharmaceuticals such as (S)-(2-(5-chloro-4-methyl-1H-benzo[d]imidazol-2-yl)-2-methylpyrrolidin-1-yl)-(5-methoxy-2-(2H-1,2,3-triazol-2-yl)phenyl)methanone.

Abstract: A method for operating an internal combustion engine having an engine with a first number of cylinders and a second number of cylinders and a supercharger arrangement, wherein a charge air flow supplied to the engine is compressed by means of at least one compressor and at least one turbine is acted on by an exhaust gas flow discharged from the engine. In a main operating mode, the engine operates the first number of cylinders in two-stroke operation and the second number of cylinders in four-stroke operation. A scavenging gradient of the engine is greater for the cylinders operated in the two-stroke operation than for the cylinders operated in the four-stroke operation.

Abstract: Methods and intermediates for synthesizing triethylenetetramine and salts thereof, as well as novel triethylenetetramine salts and their crystal structure, and triethylenetetramine salts of high purity.

Abstract: A method for operating an internal combustion engine, device, and an internal combustion engine including a motor which has a crankshaft. A charge air flow is supplied to the motor that is compressed by means of a compressor via a second rotational movement, and a power turbine for producing a first rotational movement is acted on by an exhaust gas flow discharged from the motor. The following steps are provided: in a first operating mode, operating the internal combustion engine in four-stroke operation, and in a second operating mode, operating the internal combustion engine in two-stroke operation. The crankshaft can be driven by the power turbine via the first rotational movement, and the compressor can be driven by the crankshaft via the second rotational movement, wherein the second rotational movement for the compressor can be set differently from the first rotational movement of the power turbine.

Abstract: A process for preparing olefinic products by thermal steam cracking of a first furnace feed composed of hydrocarbons in at least one first cracking furnace and of a second furnace feed composed of hydrocarbons in at least one second cracking furnace. The first furnace feed is at least partly converted into a first product stream in the first cracking furnace and the second furnace feed is at least partly converted into a second product stream in the second cracking furnace. A first pyrolysis oil is isolated from the first product stream and is at least partly treated chemically. The first pyrolysis oil is at least partly recirculated as furnace feed from downstream of the chemical treatment to the first cracking furnace. The first cracking furnace and the second cracking furnace are operated under different cracking conditions.

Abstract: The invention describes a method for separating hydrocarbons in an installation for generating hydrocarbons from a hydrocarbon-containing charge by cleavage. The product gas of the cleavage, which contains gaseous hydrocarbons, is compressed, dried, and supplied as charge material into a separation stage (a front end C3/C4 separation). The front end C3/C4 separation comprises a C4 absorber and a depropanizer. A hydrocarbon fraction consisting of hydrocarbons having a maximum of 3 carbon atoms is obtained as a gaseous overhead product of the C4 absorber. A liquid hydrocarbon fraction consisting of hydrocarbons having at least 4 carbon atoms is obtained as a bottom product of the depropanizer. The front end C3/C4 separation comprises an additional process technological C2/C4 separation stage is arranged between the C4 absorber and the depropanizer.

Abstract: The invention relates to a method for producing hydrocarbon products which comprises preparing a hydrocarbon stream (C4) which predominantly comprises branched and unbranched hydrocarbons each having four carbon atoms. A first and a second partial stream (i-C4, n-C4) are obtained from this stream (C4), the first partial stream (i-C4) predominantly comprising branched hydrocarbons with four carbon atoms and the second partial stream (n-C4) predominantly comprising unbranched hydrocarbons with four carbon atoms. The method further comprises the steam cracking of at least part of the first partial stream (i-C4) at a first, higher cracking severity and at least part of the second partial stream (n-C4), at a second, lower, cracking severity.

Abstract: Methods and intermediates for synthesizing triethylenetetramine and salts thereof, as well as novel triethylenetetramine salts and their crystal structure, and triethylenetetramine salts of high purity.

Abstract: The invention relates to a process for converting hydrocarbon inputs by thermal steamcracking to give at least one olefin-containing product stream comprising at least ethylene and propylene, by at least partly converting a hydrocarbon input in at least one cracking furnace (2), wherein the hydrocarbon input is converted under mild cracking conditions in the cracking furnace (2), mild cracking conditions meaning that propylene to ethylene are present in a ratio of 0.81 to 1.6 kg/kg at the cracking furnace exit, and the hydrocarbon input comprising predominantly hydrocarbons having a maximum carbon number of 6, preferably a maximum of 5.

Abstract: The invention relates to a process for converting feeds composed of hydrocarbons by thermal steamcracking to at least one olefin-containing product stream comprising at least ethylene and propylene, with at least partial conversion of the feeds in at least one first cracking furnace (1) and in at least one second cracking furnace (2). According to the invention, a fresh feed (B) is fractionated into at least one first and one second fresh feed fraction (B1, B2), and the first fresh feed fraction (B1) is conducted at least partly into the first cracking furnace (1) and the second fresh feed fraction (B2) at least partly into the second cracking furnace (2).

Abstract: The invention relates to a process for converting hydrocarbon feeds by thermal steamcracking to at least one olefin-containing product stream comprising at least ethylene and propylene, with at least partial conversion of a first hydrocarbon feed in at least one first cracking furnace (1) and of a second hydrocarbon feed in at least one second cracking furnace (2). According to the invention, the second hydrocarbon feed comprises predominantly hydrocarbons having a carbon number of 5 or/and 4 and consists for the most part of one or more recycled fractions (P, T) which are obtained from the product stream, and the second hydrocarbon is converted in the second cracking furnace (2) with cracking conditions that lead to a ratio of propylene to ethylene of 0.7 to 1.6 kg/kg.

Abstract: Methods and intermediates for synthesizing triethylenetetramine and salts thereof, as well as novel triethylenetetramine salts and their crystal structure, and triethylenetetramine salts of high purity.

Abstract: The invention relates to a process for converting hydrocarbon feeds by thermal steamcracking to at least one olefin-containing product stream comprising at least ethylene and propylene, with at least partial conversion of a first hydrocarbon feed in at least one first cracking furnace (1) and of a second hydrocarbon feed in at least one second cracking furnace (2). According to the invention, the second hydrocarbon feed is converted in the second cracking furnace (2) with cracking conditions that lead to a ratio of propylene to ethylene of 0.7 to 1.6 kg/kg, and the first hydrocarbon feed is converted in the first cracking furnace (1) with cracking conditions that lead to a ratio of propylene to ethylene of 0.25 to 0.85 kg/kg at the cracking furnace exit, the value for the ratio of propylene to ethylene for the second hydrocarbon feed being above the value for the ratio of propylene to ethylene for the first hydrocarbon feed.

Abstract: The invention relates to a method for producing hydrocarbon products which comprises preparing a hydrocarbon stream (C4) which predominantly comprises branched and unbranched hydrocarbons each having four carbon atoms. A first and a second partial stream (i-C4, n-C4) are obtained from this stream (C4), the first partial stream (i-C4) predominantly comprising branched hydrocarbons with four carbon atoms and the second partial stream (n-C4) predominantly comprising unbranched hydrocarbons with four carbon atoms. The method further comprises the steam cracking of at least part of the first partial stream (i-C4) at a first, higher cracking severity and at least part of the second partial stream (n-C4), at a second, lower, cracking severity.

Abstract: Methods and intermediates for synthesizing triethylenetetramine and salts thereof, as well as novel triethylenetetramine salts and their crystal structure, and triethylenetetramine salts of high purity.

Abstract: The invention relates to a process and synthetic intermediates that can be used for manufacturing the compound of formula (1-6) which is a synthetic intermediate useful in the preparation of antibiotic compounds.

Abstract: The invention relates to a new process suitable for manufacturing the compounds of formula I (I) wherein W is H, Br, Cl or methyl, which are synthetic intermediates useful in the preparation of antibiotic compounds.