公开(公告)号：DE10256579A1

公开(公告)日：2004-06-17

申请号：DE10256579

申请日：2002-12-04

Applicant: BASF AG

Inventor： WIRSING FRIEDRICH ,  TEICH FRIEDHELM ,  TRITTENBACH HELMUT ,  MAURER STEPHAN ,  SCHNEIDER THOMAS

IPC: C02F1/28 ,  C02F1/62

Abstract: Separation of ethylenediaminetetraacetic acid (EDTA) from heavy metal ion-free waste water of pH below 2.5 is effected by adsorption with activated carbon.

公开(公告)号：AT241413T

公开(公告)日：2003-06-15

申请号：AT99913251

申请日：1999-03-11

Applicant: BASF AG

Inventor： TEICH FRIEDHELM ,  SCHELLING HEINER ,  KOESTER HERBERT ,  KRATZER HORST ,  REICHERT WOLFGANG ,  GALL MARTIN ,  ZIEGLER BERND

IPC: B01D12/00 ,  B01J13/00 ,  C01B33/158 ,  F26B7/00 ,  F26B17/14 ,  F26B21/14

Abstract: In a process for drying microporous, fluid-containing particles, the fluid-containing particles to be dried are fed as a moving bed countercurrently to a drying fluid, the interfacial tension of the fluid being reduced in comparison with the interfacial tension of the fluid at room temperature, at near-critical to supercritical pressure of the fluid, preferably to a value in the range from 0 to 1/10, in particular from 0 to 1/20, of the interfacial tension at room temperature. Furthermore, microporous, three-dimensionally networked particles are prepared by a process comprising preparation of microporous particles containing pore liquid, exchange of the pore liquid in the particles for a fluid and drying of the fluid-containing particles, the exchange and drying being carried out in the moving bed by the countercurrent method.

公开(公告)号：DE19961966A1

公开(公告)日：2001-07-12

申请号：DE19961966

申请日：1999-12-22

Applicant: BASF AG

Inventor： SCHWARZBACH JOERG ,  FRIEDRICH KLAUS ,  TEICH FRIEDHELM ,  PY JUERGEN

IPC: C09B67/00 ,  C09B67/06 ,  C09B67/10 ,  C09B67/22 ,  C09B67/48 ,  C09B67/54

Abstract: The invention relates to the transformation of organic raw pigments, into a pigment form suitable for the application, by means of sublimation of the raw pigment and subsequent desublimation of the pigment vapour, whereby the raw pigment is sublimed by means of brief introduction of energy and subsequently desublimated by quenching within ≤ 10 s.

公开(公告)号：NO960820L

公开(公告)日：1996-02-28

申请号：NO960820

申请日：1996-02-28

Applicant: BASF AG

Inventor： ZIEGLER BERND ,  MRONGA NORBERT ,  TEICH FRIEDHELM ,  HERRMANN GUNTER

IPC: B01J13/00 ,  B01J21/08 ,  C01B33/158 ,  C01B33/16 ,  C04B30/00 ,  C08K3/00 ,  C08K3/36 ,  C08K3/40 ,  C08L21/00 ,  C01B

Abstract: PCT No. PCT/EP94/02822 Sec. 371 Date Feb. 29, 1996 Sec. 102(e) Date Feb. 29, 1996 PCT Filed Aug. 25, 1994 PCT Pub. No. WO95/06617 PCT Pub. Date Mar. 9, 1995Hydrophobic silica aerogels obtainable by reacting a waterglass solution with an acid at a pH of from 7.5 to 11, substantially removing ionic constituents from the resulting silica hydrogels by washing with water or dilute aqueous solutions of inorganic bases, while the pH of the hydrogels is kept in the range from 7.5 to 11, displacing the aqueous phase contained in the hydrogel by an alcohol, and subsequent supercritical drying of the resulting alcogels.

公开(公告)号：NO960820D0

公开(公告)日：1996-02-28

申请号：NO960820

申请日：1996-02-28

Applicant: BASF AG

Inventor： ZIEGLER BERND ,  MRONGA NORBERT ,  TEICH FRIEDHELM ,  HERRMANN GUNTER

IPC: B01J13/00 ,  B01J21/08 ,  C01B33/158 ,  C01B33/16 ,  C04B30/00 ,  C08K3/00 ,  C08K3/36 ,  C08K3/40 ,  C08L21/00 ,  C01B

Abstract: PCT No. PCT/EP94/02822 Sec. 371 Date Feb. 29, 1996 Sec. 102(e) Date Feb. 29, 1996 PCT Filed Aug. 25, 1994 PCT Pub. No. WO95/06617 PCT Pub. Date Mar. 9, 1995Hydrophobic silica aerogels obtainable by reacting a waterglass solution with an acid at a pH of from 7.5 to 11, substantially removing ionic constituents from the resulting silica hydrogels by washing with water or dilute aqueous solutions of inorganic bases, while the pH of the hydrogels is kept in the range from 7.5 to 11, displacing the aqueous phase contained in the hydrogel by an alcohol, and subsequent supercritical drying of the resulting alcogels.

公开(公告)号：AU7655594A

公开(公告)日：1995-03-22

申请号：AU7655594

申请日：1994-08-25

Applicant: BASF AG

Inventor： ZIEGLER BERND ,  MRONGA NORBERT ,  TEICH FRIEDHELM ,  HERRMANN GUNTER

IPC: B01J13/00 ,  B01J21/08 ,  C01B33/158 ,  C01B33/16 ,  C04B30/00 ,  C08K3/00 ,  C08K3/36 ,  C08K3/40 ,  C08L21/00

Abstract: PCT No. PCT/EP94/02822 Sec. 371 Date Feb. 29, 1996 Sec. 102(e) Date Feb. 29, 1996 PCT Filed Aug. 25, 1994 PCT Pub. No. WO95/06617 PCT Pub. Date Mar. 9, 1995Hydrophobic silica aerogels obtainable by reacting a waterglass solution with an acid at a pH of from 7.5 to 11, substantially removing ionic constituents from the resulting silica hydrogels by washing with water or dilute aqueous solutions of inorganic bases, while the pH of the hydrogels is kept in the range from 7.5 to 11, displacing the aqueous phase contained in the hydrogel by an alcohol, and subsequent supercritical drying of the resulting alcogels.