公开(公告)号：DE2443868A1

公开(公告)日：1976-03-25

申请号：DE2443868

申请日：1974-09-13

Applicant: BASF AG

Inventor： JANSEN GERHARD DR ,  ROSEWICZ HORST DIPL CHEM DR

IPC: C10G15/00 ,  C10G15/06

Abstract: Gaseous mixts. of acetylene, ethylene, methane and hydrogen are prepd. by thermal cracking of liq. hydrocarbons using electrical discharges below the surface, one or both electrodes at each discharge point consisting of conductive liq. or paste. Burning assay of solid electrodes resulting in frequent replacement is avoided, together with formation of graphite-like deposits.

公开(公告)号：DE2442707A1

公开(公告)日：1976-03-18

申请号：DE2442707

申请日：1974-09-06

Applicant: BASF AG

Inventor： KOESTER EBERHARD DIPL PHYS DR ,  NAGEL PETER DIPL ING ,  JANSEN GERHARD DR ,  WITTKAMP HEINRICH DIPL ING ,  MAYER DIETER DR

IPC: G11B15/295 ,  G11B15/67 ,  G11B15/66 ,  G11B5/62 ,  G11B23/26

Abstract: The threading leader consists of at lest partly of magnetisable material and the winding-on member is equipped with means which generate a magnetic field. These means are used to pull the threading leader onto the winding-on member and lock it with the latter. The threading leader can be guided between sound and winding shafts fitted with discs for fixing on the periphery of the disc of the winding shaft. The threading leader can be constructed as a metal foil strip connected to the magnetic tape. It can also be fitted with a plastic foil as carrier for a support of magnetisable material or metal oxide.