公开(公告)号：NO975601L

公开(公告)日：1998-06-05

申请号：NO975601

申请日：1997-12-03

Applicant: BASF AG

Inventor： FRIEDRICH HOLGER ,  HOPPE KLAUS-DIETER ,  LEUTNER BERND ,  SCHLOFER DIETER ,  HECKY KURT

IPC: C25B13/00 ,  C25B15/00 ,  C25B13/08 ,  C25B1/46

Abstract: Modification of the cross-flow resistance of a diaphragm based on fibrous material comprises treating the diaphragm, during or after manufacture, with a dispersion of a component (I) containing fluorine and optionally a solution containing a zirconium dioxide (ZrO2) precursor. Preferably treatment is carried out during electrolysis. The amount of (I) used is 0.1-30 wt.% w.r.t. the fibrous material of the diaphragm and the amount applied is 30-500 g/m diaphragm surface area.

公开(公告)号：NO975601A

公开(公告)日：1998-06-05

申请号：NO975601

申请日：1997-12-03

Applicant: BASF AG

Inventor： FRIEDRICH HOLGER ,  HOPPE KLAUS-DIETER ,  LEUTNER BERND ,  SCHLOFER DIETER ,  HECKY KURT

IPC: C25B13/08 ,  C25B13/00 ,  C25B15/00 ,  C25B1/46

CPC classification number: C25B13/00 ,  C25B15/00

公开(公告)号：NO984888L

公开(公告)日：1999-04-22

申请号：NO984888

申请日：1998-10-20

Applicant: BASF AG

Inventor： HOLGER FRIEDRICH ,  BROECKEL ULRICH ,  SCHLOFER DIETER ,  HOPPE KLAUS-DIETER ,  HECKY KURT ,  PALM PETER

IPC: D01D5/24 ,  D01F1/10 ,  D01F6/12 ,  D01F6/62 ,  D04H1/42 ,  D04H1/60 ,  D04H11/00 ,  C25B13/04

Abstract: Composite fibers (I) are prepared by heating a mixture of a PTFE or PTFE-copolymer-dispersion or powder with a fine particulate inorganic material and a fiber forming material with stirring such that the PTFE or PTFE copolymer becomes capable of flow but does not decompose and the dispersing agent is removed (in the case of a dispersion) and shearing the mixture in a mixer having a Froude number of more than 1. An Independent claim is included for a process for the production of a diaphragm by addition of (I) to a solution containing water and a thickening agent; filtering of the mixture with suction over a porous support to layer the composite fiber (I); drying of the coated porous support and heating at 90-390 degrees C.

公开(公告)号：NO984888A

公开(公告)日：1999-04-22

申请号：NO984888

申请日：1998-10-20

Applicant: BASF AG

Inventor： HOLGER FRIEDRICH ,  BROECKEL ULRICH ,  SCHLOFER DIETER ,  HOPPE KLAUS-DIETER ,  HECKY KURT ,  PALM PETER

IPC: D01D5/24 ,  D01F1/10 ,  D01F6/12 ,  D01F6/62 ,  D04H1/42 ,  D04H1/60 ,  D04H11/00 ,  C25B13/04

CPC classification number: C25B13/08 ,  D01D5/24 ,  D01F1/10 ,  D01F6/12 ,  D01F6/62 ,  D04H1/4209 ,  D04H1/4318 ,  D04H1/4382 ,  D04H1/60 ,  D04H11/00 ,  Y10S428/904 ,  Y10T428/2913 ,  Y10T428/3154 ,  Y10T428/31544

公开(公告)号：NO984888D0

公开(公告)日：1998-10-20

申请号：NO984888

申请日：1998-10-20

Applicant: BASF AG

Inventor： HOLGER FRIEDRICH ,  BR CKEL ULRICH ,  SCHLOFER DIETER ,  HOPPE KLAUS-DIETER ,  HECKY KURT ,  PALM PETER

IPC: D01D5/24 ,  D01F1/10 ,  D01F6/12 ,  D01F6/62 ,  D04H1/42 ,  D04H1/60 ,  D04H11/00 ,  C25B

Abstract: Composite fibers (I) are prepared by heating a mixture of a PTFE or PTFE-copolymer-dispersion or powder with a fine particulate inorganic material and a fiber forming material with stirring such that the PTFE or PTFE copolymer becomes capable of flow but does not decompose and the dispersing agent is removed (in the case of a dispersion) and shearing the mixture in a mixer having a Froude number of more than 1. An Independent claim is included for a process for the production of a diaphragm by addition of (I) to a solution containing water and a thickening agent; filtering of the mixture with suction over a porous support to layer the composite fiber (I); drying of the coated porous support and heating at 90-390 degrees C.