Abstract:
The embodiments relate to a test configuration for an impulse voltage test of electric high-voltage components with a lightning generator. The lightning generator can be moved between a first horizontal position within a cuboid container, and a vertical position relative to the container. A movement between the two positions includes a pivoting movement about a rotational axis. The proofing movement is transverse to the longitudinal direction of the lightning generator. The container can be closed at the top by at least one moveable cover.
Abstract:
The invention is directed to an improved, reliably performable process for preparing triallyl isocyanurate (TAIC) by Cu2+-catalysed rearrangement of triallyl cyanurate (TAC) at least 90° C. According to the invention, TAC and, if required, also a Cu2+ catalyst and solvent are fed continuously to a start reaction mixture after onset of the initially inhibited isomerization reaction, the isomerization is performed at from 90 to 160° C. and an amount of reaction mixture equivalent to the amount of reactant is drawn off continuously and sent to the workup. Preference is given to effecting the isomerization in TAIC as the reaction medium.
Abstract:
Stretches of flowing water are doped with acrolein for the purpose of preventing excessive growth of plants and algae. In order to avoid transport of acrolein, acrolein is produced at the site where it is required by deacetalation of an acrolein acetal in the presence of an aqueous mineral acid. No electrical energy is necessary for this process. An acrolein acetal and an aqueous mineral acid solution are delivered from compression-proof storage tanks into a mixing chamber by the application of pressure from a pressure cylinder. The mixture is passed through a deacetalation reactor unit which includes a tubular reactor part and a container-shaped reactor part.
Abstract:
Liquid acrolein, whose hazardous properties make handling difficult, is used to dose aqueous systems with acrolein in a biocidally effective concentration. Disclosed are agents which increase the ease and safety of acrolein handling and which are characterized by a content of 30 to 95% by weight acrolein and 5 to 70% by weight inorganic carrier materials. Silicas are the preferred carrier materials. The powdery or highly viscous mixture of substances will preferably exist in molded form and is additionally provided with a cladding that is impermeable to acrolein vapor. In dosing the aqueous systems, the agents are introduced directly in the water whereupon the acrolein is released.
Abstract:
Aqueous solutions can be doped in a simple, safe and economic manner with acrolein in biocidally effective concentration by converting acrolein acetals in aqueous phase in the presence of a strongly acidic deacetalation catalyst into acrolein, cleaving the alcohol component, constantly removing the formed acrolein from the decetalation mixture and transferring it by means of an inert gas stream or a liquid jet pump with the aqueous solution to be doped as jet fluid into the aqueous solution to be doped.
Abstract:
Aromatic mono or polycarboxylic acid glycidyl esters are obtained in good yields and high purity by transesterification of the corresponding aromatic carboxylic acid alkyl esters with glycidol in the presence of weakly toxic catalysts, namely the alkali, ammonium, and alkaline earth metal salts of pseudohalogen hydride acids with readily polarizable anions.
Abstract:
There are described new bisguanamines of the formula ##STR1## where n is a number from 10 to 20 and their production. The bisguanamines are stabilizers for formaldehyde solutions and have outstanding qualifications and action for this purpose.
Abstract:
There are described new bisguanamines of the formula ##STR1## where n is a number from 10 to 20 and their production. The bisguanamines are stabilizers for formaldehyde solutions and have outstanding qualifications and action for this purpose.
Abstract:
A test arrangement is provided for AC testing of electrical high voltage components including at least one inverter, at least one test transformer and at least one high-voltage inductor arranged as test components in a common cuboid container. The at least one high-voltage inductor is at least partly removable from the container through at least one opening on a boundary surface of the container by means of a movement apparatus.
Abstract:
A test arrangement is provided for AC testing of electrical high voltage components including at least one inverter, at least one test transformer and at least one high voltage inductor arranged as test components in a common cuboid container. The at least one high voltage inductor runs along an imaginary axis and may be at least partly removed from the container through at least one opening in a limit face of the container by means of a movement device. The at least one high voltage inductor includes has integrated surge protection.