公开(公告)号：AT120667T

公开(公告)日：1995-04-15

申请号：AT91101249

申请日：1991-01-31

Applicant: DEGUSSA

Inventor： BRAND REINHOLD DR ,  ENGLER BERND H DR ,  FOERSTER MARTIN DR ,  HARTMANN WERNER DR ,  KLEINSCHMIT PETER DR ,  KOBERSTEIN EDGAR DR ,  OHMER JOHANNES DR ,  SCHWARZ RUDOLF DR

IPC: B01J21/06 ,  B01J35/10 ,  B01J37/00 ,  B28B3/20 ,  C04B35/46

Abstract: Pressed titanium dioxide is produced by intensively mixing pyrogenically prepared titanium dioxide in the presence of deionised water with a humectant and/or a base and/or, if appropriate, a binder and/or, if appropriate, a forming aid and/or, if appropriate, a pore former, extruding the resulting mass at pressures of between 5 and 100 bar to give mouldings, drying the mouldings at temperatures between 50 and 120 DEG C and then calcining them for 1 to 5 hours in ambient air at temperatures from 400 to 700 DEG C.

公开(公告)号：DE4345168A1

公开(公告)日：1994-11-03

申请号：DE4345168

申请日：1993-10-27

Applicant: DEGUSSA

Inventor： KLASEN CLAAS-JUERGEN DR ,  FOERSTER MARTIN DR ,  HOEFLER ANDREAS DR ,  BAUER KLAUS-PETER ,  RIEMENSCHNEIDER HERBERT DR ,  FRANTA OLIVER ,  GILG RAINER

IPC: B01J21/18 ,  B01J37/00 ,  C09C1/58 ,  C09D17/00

Abstract: The invention relates to spherical carbon black granules which can be obtained from pulverulent carbon blacks. The carbon black granules are obtained by uniformly wetting the carbon blacks, together if desired with binders, lubricants and plasticisers which are customary for the pressing of carbon blacks, by addition of an appropriate quantity of fluid and mixing in a mixer, by pressing the wetted composition using an annular die press to give cylindrical strands of agglomerated material, which are then rounded in a rounding unit which has a fluted disc. The carbon blacks granulated by this method have a very narrow particle-size spectrum and are distinguished, depending on the particular procedure employed, by good flowability and good dispersibility.

公开(公告)号：DE4336548A1

公开(公告)日：1994-05-19

申请号：DE4336548

申请日：1993-10-27

Applicant: DEGUSSA

Inventor： KLASEN CLAAS-JUERGEN DR ,  FOERSTER MARTIN DR ,  HOEFLER ANDREAS DR ,  BAUER KLAUS-PETER ,  RIEMENSCHNEIDER HERBERT DR ,  FRANTA OLIVER ,  GILG RAINER

IPC: B01J2/20 ,  B01J21/18 ,  B01J37/00 ,  C01B33/18 ,  C09C1/58 ,  C09C1/60 ,  C09D17/00 ,  C11D3/12 ,  C11D11/00 ,  C01B33/113

公开(公告)号：DE4012479A1

公开(公告)日：1991-10-24

申请号：DE4012479

申请日：1990-04-19

Applicant: DEGUSSA

Inventor： BRAND REINHOLD DR ,  ENGLER BERND H DR ,  FOERSTER MARTIN DR ,  HARTMANN WERNER DR ,  KLEINSCHMIT PETER DR ,  KOBERSTEIN EDGAR DR ,  OHMER JOHANNES DR ,  SCHWARZ RUDOLF DR

IPC: B01J21/06 ,  B01J35/10 ,  B01J37/00 ,  B28B3/20 ,  C04B35/46

Abstract: Pressed titanium dioxide is produced by intensively mixing pyrogenically prepared titanium dioxide in the presence of deionised water with a humectant and/or a base and/or, if appropriate, a binder and/or, if appropriate, a forming aid and/or, if appropriate, a pore former, extruding the resulting mass at pressures of between 5 and 100 bar to give mouldings, drying the mouldings at temperatures between 50 and 120 DEG C and then calcining them for 1 to 5 hours in ambient air at temperatures from 400 to 700 DEG C.

公开(公告)号：DE3912504A1

公开(公告)日：1990-10-18

申请号：DE3912504

申请日：1989-04-17

Applicant: DEGUSSA

Inventor： DELLER KLAUS DR ,  FOERSTER MARTIN DR ,  KRAUSE HELMFRIED

IPC: C01B33/18 ,  B01J21/08 ,  B01J35/10 ,  B01J37/00 ,  C01B33/12 ,  C04B35/14 ,  C04B35/632 ,  C04B35/634 ,  C04B35/636 ,  C04B38/00

Abstract: Pressed bodies is based on pyrogenic silica having the following physical-chemical data:… External diameter: 2 to 15 mm… BET surface area: 50 to 400 m /g… Pore volume: 0.6 to 1.3 ml/g… Breaking strength: 50 to 150 N… Pore distribution: no pores of 99% by weight of SiO2… Attrition: