Abstract: The present invention is directed towards novel methods of synthesis of molindone, synthesis of the intermediates of molindone, and high-purity compositions of molindone. In particular, the invention relates to the methods of synthesis of molindone through the Mannich reaction.

Abstract: The present invention is directed towards novel methods of synthesis of molindone, synthesis of the intermediates of molindone, and high-purity compositions of molindone. In particular, the invention relates to the methods of synthesis of molindone through the Mannich reaction.

Abstract: In a method for machining a workpiece, a laser beam (5) is guided across the workpiece surface by means of a beam guide (2, 51), wherein the laser beam guide comprises a first guide (2) effecting a laser beam guide at a first path speed. The laser beam guide comprises a second guide (51) simultaneously operating with the first guide, which effects a laser beam guide at a second path speed, which is higher than the first path speed.

Abstract: A method for machining a workpiece by means of a laser beam, in which material of the workpiece is removed layer-by-layer according to predetermined definitions to produce a workpiece by traversing the exposed workpiece surface in lengths across the entire surface with a laser beam in order to vaporize and/or combust workpiece material. In a first material removal phase, the laser beam is guided relative to the workpiece over the workpiece surface by adjustable mirrors inside the laser tool, more particularly without mechanical control axes being moved to adjust the relative position between the laser tool and the workpiece. In a second material removal phase, the laser beam is guided relative to the workpiece over the workpiece surface by means of one or more control axes of the machine, the focal length being variably adjustable by means of a variable optical unit.

Abstract: The present invention is directed towards novel methods of synthesis of molindone, synthesis of the intermediates of molindone, and high-purity compositions of molindone. In particular, the invention relates to the methods of synthesis of molindone through the Mannich reaction.

Abstract: The invention relates to a method for producing a swaging in a workpiece, wherein a laser beam is guided through a beam guide over the surface of the workpiece in order to produce said swaging. The focal position of the laser beam is controlled in such a way that it can be varied at least temporarily in depth direction of the swaging. A device for the production of a swaging (6) in a workpiece (5) has a laser light source (1) for producing a laser beam for removing material, a focus adjustment device (3) for adjusting the focal position of the laser beam, a beam guide (4) for guiding the laser beam (20) over the surface of the workpiece and a control device (7) for controlling the focus adjustment device (3) and the beam guide (4). The control device is designed to control the focal position of the laser beam by means of the focus adjustment device (3) at least temporarily to variable values in depth direction of the swaging.

Abstract: The invention relates to a method for machining a workpiece by means of a laser beam, wherein a laser beam is guided by a beam guiding device over the surface of the workpiece within a working window. The beam guiding device and the workpiece are arranged in such a way that they are movable relative to one another in a direction of displacement along a displacement section and that they can occupy a first and a second relative working position to one another. According to the invention, a point on the workpiece can be machined from the second relative working position, said point being located behind the point which is machined from the first relative working position when viewed in the direction of displacement.

Abstract: A method for workpiece levelling includes mounting the workpiece in a machine tool, measuring the position of the workpiece in the mounting and determining a translatory offset xv, yv, zv and a rotatory offset ?v, ?v, ?v of the factual workpiece mounting compared to the ideal mounting from the measurement results and from a workpiece data forming an initial data set related to the ideal mounting, wherein for obtaining another initial data set a plurality of surface points of the mounted workpiece are measured in their position xn, yn, zn in space, the data of one of the initial data sets are varied a plurality of times in accordance with plural translatory and rotatory displacements for obtaining a plurality of varied data sets, from the varied data sets and their base data set the one data set is determined that represents a surface with a lowest deviation measure compared to a surface represented by the other of the initial data sets, and the translatory offset xv, yv, zv and the rotatory offset ?v, ?v, ?v

Abstract: Disclosed is a laser machining apparatus comprising a workpiece fixture for fastening a workpiece, a first laser removing device for machining a workpiece using first operating parameters, and a second laser removing device which can machine a workpiece using second operating parameters that are different from the first operating parameters, especially regarding the quality and quantity.

Abstract: During the production of a swage in a workpiece in which material is removed in layers by means of a laser beam the side walls of the swage are processed by means of a laser beam and/or a processing means and/or ultrasonic waves.

Abstract: According to a method for a depth measurement the depths of measuring points on a calibration surface are measured and correction values depending on differences between the measured values and known values are used and stored for a later correction. According to a method for the layer-wise production of a hollow the horizontal boundaries (xg, yg) for the removal of a layer (Si+1) depending on the hollow depth (z) were determined from the shape definition of the hollow. The measured values can be continuously stored and used for a later control of the laser processing device.

Abstract: In a method for machining a workpiece, a laser beam (5) is guided across the workpiece surface by means of a beam guide (2, 51), wherein the laser beam guide comprises a first guide (2) effecting a laser beam guide at a first path speed. The laser beam guide comprises a second guide (51) simultaneously operating with the first guide, which effects a laser beam guide at a second path speed, which is higher than the first path speed.

Abstract: The invention relates to a method for machining a workpiece by means of a laser beam, wherein a laser beam is guided by a beam guiding device over the surface of the workpiece within a working window. The beam guiding device and the workpiece are arranged in such a way that they are movable relative to one another in a direction of displacement along a displacement section and that they can occupy a first and a second relative working position to one another. According to the invention, a point on the workpiece can be machined from the second relative working position, said point being located behind the point which is machined from the first relative working position when viewed in the direction of displacement.

Abstract: Disclosed is a laser machining apparatus comprising a workpiece fixture (10) for fastening a workpiece (1), a first laser removing device (11) for machining a workpiece using first operating parameters, and a second laser removing device (12) which can machine a workpiece using second operating parameters that are different from the first operating parameters, especially regarding the quality and quantity.

Abstract: The invention relates to a method for producing a swaging in a workpiece, wherein a laser beam is guided through a beam guide over the surface of the workpiece in order to produce said swaging. The focal position of the laser beam is controlled in such a way that it can be varied at least temporarily in depth direction of the swaging. A device for the production of a swaging (6) in a workpiece (5) has a laser light source (1) for producing a laser beam for removing material, a focus adjustment device (3) for adjusting the focal position of the laser beam, a beam guide (4) for guiding the laser beam (20) over the surface of the workpiece and a control device (7) for controlling the focus adjustment device (3) and the beam guide (4). The control device is designed to control the focal position of the laser beam by means of the focus adjustment device (3) at least temporarily to variable values in depth direction of the swaging.

Abstract: During the production of a swage in a workpiece in which material is removed in layers by means of a laser beam the side walls of the swage are processed by means of a laser beam and/or a processing means and/or ultrasonic waves.

Abstract: According to a method for a depth measurement the depths of measuring points on a calibration surface are measured and correction values depending on differences between the measured values and known values are used and stored for a later correction. According to a method for the layer-wise production of a hollow the horizontal boundaries (xg, yg) for the removal of a layer (Si+1) depending on the hollow depth (z) were determined from the shape definition of the hollow. The measured values can be continuously stored and used for a later control of the laser processing device.

Abstract: The invention relates to a method for the production of 2-coumarone or substituted 2-coumarones, whereby cyclohexanone or substituted cyclohexanone is reacted with a carboxyl-containing acylating agent a) to give methyl 2-(2-oxo-cyclohexyl)-2-hydroxyacetate or substituted methyl 2-(2-oxo-cyclohexyl)-2-hydroxyacetates, which are either a1) directly converted to 2-coumarone or substituted 2-coumarones by means of catalytic gas-phase dehydrogenation, or a2) dehydrated by means of azeotropic distillation under basic conditions, or by use of a strong acid, or a strongly acidic ion exchanger to a mixture of methyl 2-oxocyclohexylidenacetate and the enol-lactone of the 2-oxocyclohexylidenacetic acid, or a mixture of substituted methyl 2-oxocyclohexylidenacetate and the enol-lactone of the substituted 2-oxocyclohexylidenacetic acid, which is finally converted in turn by catalytic gas-phase dehydrogenation to 2-coumarone, or substituted 2-coumarones, or b) are directly converted under acidic or basic conditions into a

Abstract: According to a method for a depth measurement the depths of measuring points on a calibration surface are measured and correction values depending on differences between the measured values and known values are used and stored for a later correction. According to a method for the layer-wise production of a hollow the horizontal boundaries (xg, yg) for the removal of a layer (Si+1) depending on the hollow depth (z) were determined from the shape definition of the hollow. The measured values can be continuously stored and used for a later control of the laser processing device.

Abstract: The invention relates to a washing process for cleaning polymers containing N or amine, ammonium or spirobicyclic ammonium groups, comprising cationic groups containing N, in addition to suitable counterions, whereby the gelled-out polymers are obtained through polymerization and cross-linking by a) adding a base which is partially or fully deprotonated, b) the partially or fully deprotonated polymers are washed, then c) optionally, are reprotonated in an organic solvent or in an organic solvent/water mixture by adding an acid, whereupon d) optionally, they are washed in an organic solvent or an organic solvent/water mixture in order to shrink the gels and optionally, e) in connection with step c) or d), the steps a)-c) or -d) are repeated.