摘要:
A process is described for the preparation of hydroxybenzylphosphonates of the formula I ##STR1## which involves A) reacting a phenol of the formula II ##STR2## with an amine of the formula III ##STR3## formaldehyde or paraformaldehyde and a protonic acid H.sub.n A to give a salt of the formula IV ##STR4## B) distilling off the water of reaction which forms, and C) reacting the reaction mixture, or the salt IV isolated therefrom, with a trialkyl phosphite of the formula ##STR5## in which H.sub.n A is an organic or inorganic acid having n protons,n is 1, 2, 3 or 4,R.sub.1 and R.sub.2 independently of one another are C.sub.1 -C.sub.12 alkyl or C.sub.5 -C.sub.7 cycloalkyl,R.sub.3 and R.sub.4 independently of one another are C.sub.1 -C.sub.12 alkyl or form, together with the nitrogen atom attached to them, a piperidyl or morpholinyl radical, and R.sub.5, R.sub.6 and R.sub.7 independently of one another are C.sub.1 -C.sub.4 alkyl; and the compounds of the formula I are suitable, for example, as processing stabilizers for plastics.
摘要:
A process for the production of alkyltin thiocarboxylic acid esters from alkyltin halides and thiocarboxylic acid esters in the presence of an acid acceptor, which process comprises carrying out the reaction continuously in a reaction system comprising 1 to 5 agitator vessels with an average dwell time of 1 to 60 minutes, at a constant pH value in the range from 3 to 8, and in a temperature range from 40.degree. to 80.degree. C. and separating the product drawn off from the reaction system from the aqueous phase and subsequently drying it.The alkyltin thiocarboxylic acid esters obtained by the process of the invention are used for stabilizing homo- and copolymers of vinyl chloride.
摘要:
An air discharging device for discharging an air flow into a vehicle interior is provided that includes a first air conducting device that can be adjusted with respect to the air discharging characteristic thereof, the air conducting device lying in a first air through-flow region of the air discharging device. The air discharging device also includes a second air conducting device that can be adjusted with respect to the air discharging characteristic thereof, the air conducting device lying in a second air through-flow region of the air discharging device.
摘要:
The invention relates to a composite part, especially a cross member between the A columns of a motor vehicle. Said composite part comprises an open metal profile (2) and a channel (3) disposed therein, at least partially constituted of a plastic material and extending along the metal profile (2). An insert part (4, 22) produced from a plastic material is fastened on the wall of the metal profile (2) in such a manner that a retaining contour (10) configured on an opening (11) in the wall of the metal profile (2) and shaped from said profile undercuts the plastic material of the insert part (4, 22) pressed into the contour, thereby providing the channel (3) with a wall and/or mechanically stabilizing it.
摘要:
A toroidal transmission, especially for motor vehicles, comprising an input shaft which can be connected to an engine, a first toroidal variator and a second toroidal variator which are connected to the input shaft on the input side. A first output shaft can be connected to the output of the first toroidal variator, and a second output shaft can be connected to the output of the second toroidal variator. The toroidal transmission comprises a first power range shifter for the first toroidal variator and a second power range shifter for the second toroidal variator. The first power range shifter and the second power range shifter have a common clutch.
摘要:
The invention relates to a component (1), especially a hybrid component for a crossrail of a vehicle, comprising a metal base body (2) which is at least partially provided with a plastic structure (6). The metal base body (2) comprises a fixing element (12) which is formed on the edge area thereof (Rg) and which is used to at least mechanically attach the base body (2) to the plastic structure (6).
摘要:
The invention relates to a method for the production of a component (1) comprising a base body (2) which is at least partially covered in plastic (2), particularly a hybrid component, for a crossrail of a vehicle or a front-end-component. The base body (2) is made of at least two elements (2a, 2b) which are connected together on at least one connection point (8a, 8b, 8c, 8d). The inner wall of the base body (2) is covered with plastic (4) in such a manner that a cavity (H) is formed in the region of one of the connection points (8a, 8b) between the connection points (8a, 8b) and the plastic (4). The invention also relates to a component (1), especially a hybrid component, for a crossrail of a vehicle, comprising a base body (2) which is at least partially covered by plastic, said base body being formed from at least two elements (2a, 2b) whereon at least one of the connection points (8a, 8b, 8c, 8d) can be joined together. The inner wall of the base body (2) is provided with plastic (4) in such a manner that a cavity (H) is formed in the region of one of the connection points (8a, 8b) between the connection point (8a, 8b) and the plastic (4).
摘要:
The invention relates to a component (1), especially a hybrid carrier for a carrier in a vehicle. Said component comprises a base body (2) provided with a cavity (H), and said base body is provided with at least an inner plastic covering. The plastic covering is formed by a film channel (3, 3a) which is made of plastic and which is arranged in the cavity (H) of the base body (2).
摘要:
The invention relates to a component, in particular a crossmember for arranging between A-pillars of a motor vehicle, having an essentially tubular base body in which at least one duct is provided. In order to provide an improved lightweight component which can be produced in a more simple manner using fewer working steps and therefore more cost-effectively and in which, in an advantageous manner, a duct can be integrated, it is proposed that the base body is lined on the inside with plastic in order to form duct walls consisting of plastic.The component according to the invention is used as a dashboard support in a motor vehicle.
摘要:
A method and a device for the draw expansion of metal tubes of oval cross-section uses expansion elements drawn unidirectionally through metal tubes by means of draw elements. The expansion elements are fastened to the draw elements by suspension devices which have a hammer-like contour. The draw elements are preferably made of a rod-shaped material. An apparatus of the invention is an apparatus for mechanically expanding metallic tubes, in particular tubes in heat exchangers. Each individual tube to be expanded is held in at least one holding device and passed through by a drawing mandrel with an expanding element. To prevent jamming of the expanding element in one of the holding devices, the holding devices are provided with lateral guides which are resiliently compliant outward in the radial direction. When the expanding element passes through the metallic tube, the tube is expanded in the radial direction. The forces occurring thereby in the axial direction are absorbed by the holding device, since the tube is seated on a stop in the holding device.