Abstract: In a wall element (1, 2) for a mobile dividing wall with a wall member (3) and a border profile (4), the said profile comprises a base member (G), which is firmly joined to the wall member (3), and a revolving element (10, 10′) mounted therein to turn around its axis (15). The base member (G) comprises two lips (18) bearing substantially against the revolving element (10, 10′). The revolving element (10, 10′) is coated on part of its surface with burr material (16) and is otherwise provided with at least one further surface structure. Depending on the angular position of the revolving element, the burr material (16) or alternatively the different surface structure or one of the different surface structures is exposed externally between the two lips (18).

Abstract: A mobile partition comprises at least one partition element (2) and at least one at least partly ferromagnetic support post (1). The partition element (2) has two vertical edge sections (6) which comprise magnetic systems (10) for joining the partition element (2) to the at least one support post (1). Said magnetic systems (10) are configured as magnetic strips (11) which extend substantially alongside the edge sections (6) and with their flat surfaces contact the corresponding support post (1). Each magnetic strip is inserted into a concave recess (13) in the edge sections (6) and presents non-magnetic edge areas.

Abstract: Partition wall comprising at least one wall element (5) connected to a column (6) by a connecting element (1). The column (6) has a plurality of grooves distributed along its periphery and suitable for interacting with the connecting element (1). The wall element (5) has a connection profile (9) with at least one groove (11) on the edge side bordering on the column. The connecting element (1) has two clamping flanges (2,3) parallel to each other and interconnected by a connecting rod (4), wherein one flange is received in a groove (15) of the column (6) and the other flange is received in a groove (11) of the wall element (5). One (2) of the clamping flanges (2,3) of the connecting element (1) is received in the corresponding groove (11;15) in a rotationally fixed manner while the other clamping flange (13) is received in the corresponding groove (15;11) in such a way that it can rotate around its longitudinal axis (12) within a predetermined angular area.

Abstract: The present invention relates to a process for preparing hydroxyl-containing polymers, in particular for preparing polytetrahydrofuran with terminal hydroxyl groups, from the corresponding acyloxy-containing polymers by transesterification with alcohols in the presence of an alkali metal- or alkaline earth metal-containing catalyst, which entails the appropriate acyloxy-containing polymer being introduced together with the alcohol and the catalyst into a first prereactor (I) and converted therein at least partly to the hydroxyl-containing polymer, and the reaction solution being fed into the upper zone (IIa) of a distillation column (II) into whose lower zone (IIb) alcohol in vapor phase is additionally fed. This involves a phase exchange at the coherent and the disperse phase at the transition from the prereactor to the distillation column. Preferably, in addition to the first prereactor, a further 3 prereactors are used which serve as holdup reactors.

Abstract: Partition wall comprising at least one wall element (5) connected to a column (6) by a connecting element (1). The column (6) has a plurality of grooves distributed along its periphery and suitable for interacting with the connecting element (1). The wall element (5) has a connection profile (9) with at least one groove (11) on the edge side bordering on the column. The connecting element (1) has two clamping flanges (2,3) parallel to each other and interconnected by a connecting rod (4), wherein one flange is received in a groove (15) of the column (6) and the other flange is received in a groove (11) of the wall element (5). One (2) of the clamping flanges (2,3) of the connecting element (1) is received in the corresponding groove (11;15) in a rotationally fixed manner while the other clamping flange (13) is received in the corresponding groove (15;11) in such a way that it can rotate around its longitudinal axis (12) within a predetermined angular area.

Abstract: Connecting element (1) for connecting two components of a partition wall, comprising two clamping flanges (2, 3) interconnected by a connecting rod (4). Said element has an asymmetric configuration due to the fact that the clamping flanges (2, 3) have different cross sections. At least parts of the contour of the first clamping flange (2) are unrounded while at least certain parts of the contour of the second clamping flange (3) are rounded.

Abstract: A mobile partition comprises at least one partition element (2) and at least one at least partly ferromagnetic support post (1). The partition element (2) has two vertical edge sections (6) which comprise magnetic systems (10) for joining the partition element (2) to the at least one support post (1). Said magnetic systems (10) are configured as magnetic strips (11) which extend substantially alongside the edge sections (6) and with their flat surfaces contact the corresponding support post (1). Each magnetic strip is inserted into a concave recess (13) in the edge sections (6) and presents non-magnetic edge areas.

Abstract: A process for treating polyether polyols prepared in a conventional manner by base-catalyzed reaction of H-functional initiator substances with alkylene oxides comprises a combination of a thermal-reactive step at a pH of less than 7 and a temperature above 60° C. and a thermal-distillative step in a countercurrent column using a purifying agent. The polyether polyols prepared according to the invention are used for producing low-fogging and low-odor PUR foams.

Abstract: A process for distilling ethylene oxide out of a mixture including ethylene oxide in a column at an absolute pressure of from 2 to 10 bar and a temperature of 20 to 180.degree. C. by withdrawing pure ethylene oxide in the liquid or gaseous state overhead or via a sidestream in the rectifying section of the column includes effecting the distillation in a column having on its inside a plurality of successive zones of structured sheet-metal packing or dumped beds of packing elements, these zones being assigned one or more extinguishing systems on the outside of the column.

Abstract: Neopentyl glycol hydroxypivalate (NGH) is isolated from a mixture containing NGH, lower- and higher-boiling products and inorganic salts and purified in a two-stage process, whereinin a first separation stage, the inorganic salts and part of the higher-boiling products are separated off in a wiped-film evaporator and a vapor stream consisting of NGH, lower- and higher-boiling products is discharged and fed to a heat exchanger and condensed therein,and, in a second separation stage, the resulting condensate is distilled in a rectification column from which NGH is taken off in a side stream and condensed. Further discharges of the rectification column containing lower-boiling products or higher-boiling products are separately taken off. The higher-boiling products which comprise residual NGH are partly or completely recycled to the lower region of the rectification column.

Abstract: A process for preparing hydroxyl-containing polymers and, in particular, a process for preparing polytetrahydrofuran with terminal hydroxyl groups from the corresponding acyloxy-containing polymers by transesterification with alcohols is carried out continuously in at least one stirred vessel, with the foam produced in the transesterification being fed tangentially to a cylindrical container, preferably a cyclone separator, at an adequate velocity to destroy the foam. The liquid phase which separates out is recycled through a line to the at least one stirred vessel.This continuous process is preferably carried out in a cascade of stirred vessels, in which each stirred vessel or a subunit of at least two stirred vessels can in each case be coupled to a cylindrical container, preferably in the form of a cyclone separator.

Abstract: Caprolactam is obtained from caprolactam-containing polymers in the presence of a base under reduced pressure by depolymerizing polymers which contain the repeating unit --[--N(H)--(CH.sub.2).sub.5 --C(O)--] or mixtures consisting essentially offrom 50 to 99.99% by weight of a polymer containing the repeating unit --[--N(H)--(CH.sub.2).sub.5 --C(O)--]--from 0.01 to 50% by weight of additives selected from the group consisting of inorganic fillers, organic and inorganic pigments and dyes,from 0 to 10% by weight of organic and/or inorganic additives,from 0 to 40% by weight of non-polyamide-containing polymers andfrom 0 to 20% by weight of polyamides, with the exception of polycaprolactam and copolyamides prepared from caprolactam,in at least two depolymerization reactors connected in series.

Abstract: Trialkylamines and methyl formate are recovered from reaction mixtures obtained in the preparation of trimethylolalkanes by reaction of n-alkanals with from 2.2 to 4.5 moles of formaldehyde in aqueous solution in the presence of from 0.6 to 3 mole of trialkylamine, each quantity based on 1 mole of alkanal, and subsequent hydrogenation in a process wherein the crude reaction mixturea) is heated to from 100.degree. to 200.degree. C.

Abstract: A method for manufacturing solid electrolyte capacitors is provided. Pursuant to the method, pores in formed sintered members composed of a valve metal are first nearly filled with manganese dioxide that is produced by pyrolysis of solutions that contain manganese nitrate. Following thereupon, the sintered members are immersed into a dry melt of manganese nitrate that may comprise an additive of manganese dioxide and/or silicon dioxide powder. Subsequently, the members are introduced into a furnace, and heated to approximately 100.degree. C. in dry air. Subsequently, fine drops of water are applied onto the surface of the heated sintered members and the pyrolysis is ended at temperatures of approximately 200.degree. to about 350.degree. C. in a mist of water vapor that flows by.