公开(公告)号：DE59505833D1

公开(公告)日：1999-06-10

申请号：DE59505833

申请日：1995-10-18

Applicant: BASF AG

Inventor： SCHERZER DIETRICH DR ,  HUSEMANN WOLFRAM DR ,  WITT MICHAEL DR ,  HAHN KLAUS DR ,  KAEMPFER KNUT DR ,  ALICKE GERHARD

IPC: C08F2/18 ,  C08F2/20 ,  C08F2/38 ,  C08F12/08 ,  C08F255/02 ,  C08F257/00 ,  C08F257/02 ,  C08J9/20 ,  C08J11/08 ,  C08L23/06 ,  C08L25/00 ,  C08L25/04 ,  C08L25/06

Abstract: Expandable polystyrene contains up to 40 wt.% recycled polystyrene. It is obtd. by dissolving the recycled material in styrene monomer and polymerising this soln. in aq. suspension, with addn. of finely-divided polyethylene wax (I) and/or a mol.wt. regulator (II) during polymerisation. Pref. the material is treated with 0.05-1.0 wt.% (I) and/or 10-5000 ppm (II). (I) has a Mn of 2000-6000. (II) is dimerised alpha -methylstyrene.

公开(公告)号：DE19530765A1

公开(公告)日：1997-02-27

申请号：DE19530765

申请日：1995-08-22

Applicant: BASF AG

Inventor： LAY PETER ,  RUECK SWEN ,  SCHIESSL MICHAEL ,  WITT MICHAEL DR ,  ZETTLER HANS-DIETER ,  BAUMGAERTEL MICHAEL DR ,  DEMBEK GERHARD DR ,  HAHN KLAUS DR ,  HOLOCH JAN DR ,  HUSEMANN WOLFRAM DR ,  KAEMPFER KNUT DR

IPC: C08J9/16 ,  B01J13/14 ,  B01J19/18 ,  B01J19/24 ,  C08F2/02 ,  C08F2/18 ,  C08F12/08 ,  C08F212/08

Abstract: A process is disclosed for continuously producing expandable styrene polymers by polymerising styrene in the presence of expanding agents in three steps: (a) prepolymerising styrene in the mass; (b) dispersing the prepolymer in an aqueous phase; and (c) polymerising the prepolymer in an aqueous suspension.

公开(公告)号：DE3444336A1

公开(公告)日：1986-06-05

申请号：DE3444336

申请日：1984-12-05

Applicant: BASF AG

Inventor： GETTERT HANS DR ,  DETMER OTTHEINRICH DR ,  HORN ROBERT K DR ,  KAEMPFER KNUT DR

IPC: C01B3/36 ,  C01B3/34 ,  F23D11/12

公开(公告)号：DE2231316A1

公开(公告)日：1974-01-10

申请号：DE2231316

申请日：1972-06-27

Applicant: BASF AG

Inventor： BROECKER FRANZ-JOSEF DR ,  KAEMPFER KNUT DR ,  SCHWARZMANN MATTHIAS DR ,  MAROSI LASLO DR

IPC: B01J23/755 ,  B01J23/78 ,  B01J37/08 ,  C07C1/00 ,  C07C1/02 ,  C07C9/04 ,  C07C67/00 ,  B01J11/22

公开(公告)号：DE3483743D1

公开(公告)日：1991-01-24

申请号：DE3483743

申请日：1984-09-05

Applicant: BASF AG

Inventor： BROECKER FRANZ JOSEF DR ,  GETTERT HANS DR ,  KAEMPFER KNUT DR

IPC: B01D53/86 ,  B01J23/00 ,  B01J23/755 ,  B01J23/76 ,  B01J32/00 ,  C01B17/04 ,  B01D53/36

公开(公告)号：DE3362623D1

公开(公告)日：1986-04-24

申请号：DE3362623

申请日：1983-11-12

Applicant: BASF AG

Inventor： BROECKER FRANZ JOSEF DR ,  GETTERT HANS DR ,  KAEMPFER KNUT DR

IPC: B01D53/86 ,  B01J23/80 ,  C01B3/58 ,  C01B32/50 ,  C10K1/20 ,  C10K1/34 ,  C01B31/20 ,  B01D53/36

Abstract: Gases containing CO and/or CO2 are purified by removing sulfur compounds and other impurities by catalytic reaction at elevated temperatures by a process in which the gases to be purified are passed directly through a catalyst charge containing a Cu/ZnO catalyst prepared by thermal decomposition of a mixed crystalline compound of zinc hydroxide carbonate, and the space velocity is set at 500-5,000 m3 (S.T.P.) per m3 of catalyst per hour. Preferably, the catalyst used is a Cu/ZnO catalyst which is prepared by thermal decomposition of a catalyst precursor of the general formula CuxZny(OH)6(CO3)2.

公开(公告)号：DE3332563A1

公开(公告)日：1985-03-28

申请号：DE3332563

申请日：1983-09-09

Applicant: BASF AG

Inventor： BROECKER FRANZ JOSEF DR ,  GETTERT HANS DR ,  KAEMPFER KNUT DR

IPC: B01D53/86 ,  B01J23/00 ,  B01J23/755 ,  B01J23/76 ,  B01J32/00 ,  C01B17/04 ,  B01D53/36

公开(公告)号：DE3162896D1

公开(公告)日：1984-05-03

申请号：DE3162896

申请日：1981-09-17

Applicant: BASF AG

Inventor： BROECKER FRANZ JOSEF DR ,  GETTERT HANS DR ,  KAEMPFER KNUT DR

IPC: B01D53/86 ,  B01J23/06 ,  C01B3/54

公开(公告)号：DE2654028A1

公开(公告)日：1978-06-01

申请号：DE2654028

申请日：1976-11-27

Applicant: BASF AG

Inventor： FRANK GERHARD DR ,  KAEMPFER KNUT DR ,  SCHWARZMANN MATTHIAS DR

IPC: B01J23/75 ,  B01J23/78 ,  B01J35/10 ,  B01J37/00 ,  B01J37/03 ,  B01J37/14 ,  B01J37/18 ,  C07C209/48 ,  B01J23/74 ,  C07C87/14

公开(公告)号：DE2261634A1

公开(公告)日：1974-06-27

申请号：DE2261634

申请日：1972-12-16

Applicant: BASF AG

Inventor： BROECKER FRANZ-JOSEF DR ,  DETHLEFSEN WINFRIED DR ,  KAEMPFER KNUT DR ,  SCHWARZMANN MANNHIAS DR

IPC: C10G11/20 ,  B01J23/00 ,  C01B3/38 ,  C07B61/00 ,  C07C1/00 ,  C07C4/06 ,  C07C9/04 ,  C07C67/00 ,  C10G51/02 ,  C10G13/30

Abstract: A mixt of 2-30C hydrocarbons with steam is partially cracked in a first reaction zone over a Ni catalyst to give a prod stream also contg. unreacted hydrocarbon. After cooling this is further reacted in a second zone over a Ni catalyst in the presence of steam to give a mixt of CH4, carbon oxides, H2 and steam. The catalyst in the first zone is pref. used until 75% of the hydrocarbon remains unreacted. It may then be replaced and used as the second zone, while the partially used catalyst from the second zone is used as the first. The catalyst is a type with low temp. activity, esp. one produced from a precursor of formula Ni5MgAl2(OH)16.CO3.4H2O. The process is highly economic, since the first zone can be operated with low steam to hydrocarbon ratios and with high catalyst loadings. Life of the catalyst is extended.