Abstract: A heating device comprises a circulation chamber with inlet and outlet openings for a heat carrier, a heating assembly connected to the circulation chamber in a heat-conducting manner for heating the heat carrier in the circulation chamber, a connection chamber with a control unit arranged therein and comprising a printed circuit board for controlling the PTC heating assembly, a partition wall between the circulation chamber and the connection chamber, and a hold-down device arranged on the side of the control unit facing away from the partition wall which interacts with the control unit. For an improved protection of the electrical heating device the hold-down device incorporates measures for collecting moisture, which are configured such that condensed moisture is kept away from the control unit, at least in certain areas.

Abstract: A control device is disclosed for an electric heating device with a PTC element as an auxiliary heater in a motor vehicle. The control device has a control housing in which a printed circuit board, equipped with at least one power switch is provided. The power switch is applied against a cooling surface in a heat-conducting manner under pretension via an elastic pretensioning element. The pretensioning element is formed from an elongated piece of a soft-elastic plastic part extruded with at least one through-opening. Also disclosed is an electric heating device having such a control device.

Abstract: A control device in a vehicle has an electronic housing in which control components are accommodated, and a drying assembly having a dryer housing in which a hygroscopic drying agent is accommodated and which has at least one opening communicating with the electronic housing. The drying assembly is adapted such that the opening prevents the passage of the drying agent into the electronic housing.

Abstract: An electric heating device comprised a housing having a partition wall, which separates a connection chamber from a heating chamber for dissipating heat and from which at least one PTC heating element protrudes as a heating rib in the direction toward the heating chamber. The PTC heating device comprises at least one PTC element and conductor tracks that are electrically connected in the connection chamber for energizing the PTC element with different polarities and that are connected to the PTC element in an electrically conductive manner. The heating chamber, in a top view onto the partition wall, has a substantially rectangular base area. The PTC heating devices are arranged obliquely relative to the base area for a more compact configuration of the electric heating device.

Abstract: An electric heating device comprises a housing having a partition wall, which separates a connection chamber from a heating chamber for dissipating heat and from which PTC heating devices protrude as heating ribs in the direction toward the heating chamber. Each PTC heating device comprises at least one PTC element and conductor tracks that are electrically connected in the connection chamber for energizing the PTC element with different polarities and that are connected to the PTC element in an electrically conductive manner. The heating chamber, in a top view onto the partition wall, has a substantially rectangular base area. The PTC heating devices are arranged obliquely relative to the base area for a more compact configuration of the electric heating device.

Abstract: A PTC heating element has two insulating layers with a metallic coating provided on one side and a PTC element arranged therebetween. The PTC element is provided on oppositely disposed main side surfaces with a respective metallization which is electrically conductively connected to the coating of one of the insulating layers The metallization provided on one of the main side surfaces is assigned only to one potential for energizing the PTC element, and the metallization provided on the other of the main side surfaces is only assigned to the other potential for energizing the PTC element, as well as an electric heating device containing such a PTC heating element. With regard to better heat decoupling, the insulating layer may be glued to the PTC element, and the coating of the insulating layers is in direct electrically conductive contact with the metallization of the PTC element.

Abstract: A control device is disclosed for an electric heating device with a PTC element as an auxiliary heater in a motor vehicle. The control device has a control housing in which a printed circuit board, equipped with at least one power switch is provided. The power switch is applied against a cooling surface in a heat-conducting manner under pretension via an elastic pretensioning element. The pretensioning element is formed from an elongated piece of a soft-elastic plastic part extruded with at least one through-opening. Also disclosed is an electric heating device having such a control device.

Abstract: APTC heating assembly includes contact elements and a cuboid ceramic component on which a metallization is applied. The ceramic component comprises mutually opposing main side surfaces for heat dissipation which are larger by at least a factor of five than each of the end faces extending between the main side surfaces. The contact elements are electrically conductively connected to the metallization for introducing the power current into the ceramic component. The metallization is formed only on the main side surfaces and is in the form of elongated metallization strips. The metallization strips extend along mutually opposite edges of the cuboid ceramic component, are each assigned to one polarity, are separated by a single end face, and are connected to a power source via a common contact element.

Abstract: An electric heating device for a motor vehicle has a first housing part which surrounds a first circulation chamber and a second housing part which surrounds a second circulation chamber. The first and second circulation chambers abut against each other. A PTC heating device is interposed between the first and second housing parts. The PTC heating device comprises a first cover element covering the first circulation chamber of the first housing part and a second cover element covering the second circulation chamber of the second housing part. At least one PTC element is provided between the first and the second cover elements. An electrode field is provided on the interior side of each of the respective cover elements and is electrically conductively contacted on the PTC element.

Abstract: A heat-generating element of an electric heating device includes a PTC element, conductor tracks abutting surfaces of the PTC element, and an adhesive which connects the conductor tracks to the PTC element. The conductor track has several contact projections which protrude from an abutment surface of the conductor tracks. The contact projections form a contact surface which abuts the surface in an electrically conductive manner with a free space between the surface and the abutment surface, in which the adhesive is accommodated. Also disclosed is a method in which the contact projections are formed from initially planar conductor track, an adhesive is applied to the abutment surface between the contact projections, a masking covering the contact surfaces is removed, and the conductor track is glued to a PTC element with the adhesive accommodated between the surface and the abutment surface.

Abstract: An electric heating device comprised a housing having a partition wall, which separates a connection chamber from a heating chamber for dissipating heat and from which at least one PTC heating element protrudes as a heating rib in the direction toward the heating chamber. The PTC heating device comprises at least one PTC element and conductor tracks that are electrically connected in the connection chamber for energizing the PTC element with different polarities and that are connected to the PTC element in an electrically conductive manner The heating chamber, in a top view onto the partition wall, has a substantially rectangular base area. The PTC heating devices are arranged obliquely relative to the base area for a more compact configuration of the electric heating device.

Abstract: A PTC heating element has two insulating layers with a metallic coating provided on one side and a PTC element arranged therebetween. The PTC element is provided on oppositely disposed main side surfaces with a respective metallization which is electrically conductively connected to the coating of one of the insulating layers The metallization provided on one of the main side surfaces is assigned only to one potential for energizing the PTC element, and the metallization provided on the other of the main side surfaces is only assigned to the other potential for energizing the PTC element, as well as an electric heating device containing such a PTC heating element. With regard to better heat decoupling, the insulating layer may be glued to the PTC element, and the coating of the insulating layers is in direct electrically conductive contact with the metallization of the PTC element.

Abstract: The invention relates to monoalkylaminoketones of the formula (I), in which R1 and R2 have the meanings indicated.

Abstract: A process for the enantioselective preparation of amino alcohols of formula I by enantioselective hydrogenation of amino ketones of the formula II in the presence of a non-racemic catalyst. The catalyst is a transition-metal complex in which the transition metal is complexed to a chiral diphosphine ligand.

Abstract: The present invention relates to processes for the bromination of organic compounds, and to bromination microreactors for carrying out these processes.

Abstract: The invention relates to monoalkylaminoketones of the formula (I), in which R1 and R2 have the meanings indicated.

Abstract: The invention relates to processes for the enantioselective preparation of amino alcohols of the formula (I), in which R1, R2 and n have the meanings indicated.

Abstract: The present invention relates to a novel process for the nitration of organic compounds, preferably of aromatic and heteroaromatic compounds, using nitrating reagents which are known from the literature and new types of nitrating reagents.

Abstract: The invention relates to a method for the production of trifluoroethoxy-substituted benzoic acids, by reaction of a corresponding halogenated benzoic acid with trifluoroethanol in the solvent tetrahydrofuran, in the presence of a base and a copper salt, followed by an acidic work-up.

Abstract: The invention relates to a method for the production of trifluoroethoxy-substituted benzoic acids, by reaction of a corresponding halogenated benzoic acid with trifluoroethanol in the solvent tetrahydrofuran, in the presence of a base and a copper salt, followed by an acidic work-up.