公开(公告)号：DE19824788A1

公开(公告)日：1999-12-09

申请号：DE19824788

申请日：1998-06-03

Applicant: BASF AG

Inventor： FEINDT HANS-JACOB ,  WITT MICHAEL ,  RIZK FARID ,  MAGIN ALBERT ,  BERTICH HEINZ ,  WALTER CHRISTIAN ,  SCHICKETANZ WALTER ,  GRUBER WOLFGANG

IPC: B29B13/06 ,  B29C31/04 ,  B65G53/30

Abstract: Granules are concentrated in a side stream of the water used during granulation (for cooling and cutter lubrication). This side stream forms the conveying medium for the granules. Preferred features: The side stream of granulation water contains 15-35 wt%, preferably 15-25 wt% of granules. Separation between granulator (C) and storage location exceeds 200 m, preferably exceeding 500 m. Drying of granules takes place in the immediate vicinity of further treatment and/or storage. Side stream temperature after leaving the separator (D) is raised, especially through 5-40 deg K. Vertical relationships between: granulator, side stream handling plant (G), and if appropriate, the drying unit (H), facilitate granule conveying to further processing and/or storage.

公开(公告)号：NO980736L

公开(公告)日：1998-02-20

申请号：NO980736

申请日：1998-02-20

Applicant: BASF AG

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

IPC: C08J9/16 ,  B01J13/14 ,  B01J19/18 ,  B01J19/24 ,  C08F2/02 ,  C08F2/18 ,  C08F12/08 ,  C08F ,  C08J

Abstract: PCT No. PCT/EP96/03633 Sec. 371 Date Jan. 29, 1998 Sec. 102(e) Date Jan. 29, 1998 PCT Filed Aug. 19, 1996 PCT Pub. No. WO97/08231 PCT Pub. Date Mar. 6, 1997A continuous process for preparing bead-form expandable styrene polymers in which the styrene is prepolymerized in bulk to a conversion of 10 to 80%, the prepolymer is dispersed in liquid form in an aqueous phase in the presence of suspension stabilizers, and the polymerization of the prepolymer is completed in an aqueous suspension to a residual styrene content of less than 2000 ppm.

公开(公告)号：ES2101519T3

公开(公告)日：1997-07-01

申请号：ES94910369

申请日：1994-03-05

Applicant: BASF AG

Inventor： WITT MICHAEL ,  SCHERZER DIETRICH ,  HAHN KLAUS ,  NAEGELE DIETER

IPC: C08F2/20 ,  C08F2/44 ,  C08J9/20 ,  C08K5/09

Abstract: PCT No. PCT/EP94/00662 Sec. 371 Date Aug. 2, 1995 Sec. 102(e) Date Aug. 2, 1995 PCT Filed Mar. 5, 1994 PCT Pub. No. WO94/21719 PCT Pub. Date Sep. 29, 1994A process for the preparation of bead-form expandable styrene polymers by polymerizing styrene, if desired in the presence of further comonomers, in aqueous suspension in the presence of organic molecular colloids as suspension stabilizers and conventional styrene-soluble polymerization catalysts and with addition of a blowing agent and, if desired, conventional additives in effective amounts, wherein the aqueous suspension contains at least one olefinically unsaturated carboxylic acid or a water-soluble salt thereof in an amount, based on the organic phase, of from 0.002 to 0.3% by weight of carboxylate anions.

公开(公告)号：AU657626B2

公开(公告)日：1995-03-16

申请号：AU4133893

申请日：1993-06-18

Applicant: BASF AG

Inventor： WITT MICHAEL ,  HAHN KLAUS ,  LORENZ MARIA

IPC: C08J9/18 ,  C08J9/20 ,  C08K13/02

Abstract: A process for the preparation of expandable thermoplastic polymers by post-impregnation with a blowing agent in liquid suspension in the presence of a mixture of magnesium pyrophosphate and a sulphonate group-containing extender as suspension stabiliser in a reactor, characterised in that a) the magnesium pyrophosphate is prepared in the same reactor at a temperature below 50 DEG C by addition of a solid magnesium salt in an amount corresponding to an at least 3% stoichiometric excess, based on pyrophosphate, to an aqueous solution of the pyrophosphate, b) the suspension medium is heated to a temperature in the range between 70 and 140 DEG C, and c) the blowing agent is added in this temperature range.

公开(公告)号：MX9401306A

公开(公告)日：1994-08-31

申请号：MX9401306

申请日：1994-02-21

Applicant: BASF AG

Inventor： NAEGELE DIETER ,  WITT MICHAEL ,  HUSEMANN WOLFRAM ,  SCHERZER DIETRICH ,  HANN KLAUS ,  RIETHUES MICHAEL

IPC: C08F2/20 ,  C08F2/44 ,  C08J9/00 ,  C08J9/20 ,  C08K5/00 ,  C08K5/01 ,  C08K5/03 ,  C08L23/06 ,  C08L25/04 ,  C08L25/06 ,  C08L89/00

公开(公告)号：DE59602118D1

公开(公告)日：1999-07-08

申请号：DE59602118

申请日：1996-08-19

Applicant: BASF AG

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

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

Abstract: PCT No. PCT/EP96/03633 Sec. 371 Date Jan. 29, 1998 Sec. 102(e) Date Jan. 29, 1998 PCT Filed Aug. 19, 1996 PCT Pub. No. WO97/08231 PCT Pub. Date Mar. 6, 1997A continuous process for preparing bead-form expandable styrene polymers in which the styrene is prepolymerized in bulk to a conversion of 10 to 80%, the prepolymer is dispersed in liquid form in an aqueous phase in the presence of suspension stabilizers, and the polymerization of the prepolymer is completed in an aqueous suspension to a residual styrene content of less than 2000 ppm.

公开(公告)号：NO980736A

公开(公告)日：1998-02-20

申请号：NO980736

申请日：1998-02-20

Applicant: BASF AG

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

IPC: C08J9/16 ,  B01J13/14 ,  C08F2/02 ,  C08F2/18 ,  C08F12/08 ,  C08F ,  C08J

CPC classification number: C08F12/08

公开(公告)号：CA2227270A1

公开(公告)日：1997-03-06

申请号：CA2227270

申请日：1996-08-19

Applicant: BASF AG

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

IPC: C08J9/16 ,  B01J13/14 ,  B01J19/18 ,  B01J19/24 ,  C08F2/02 ,  C08F2/18 ,  C08F12/08 ,  C08J9/20 ,  C08L25/04

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：AU3385895A

公开(公告)日：1996-03-27

申请号：AU3385895

申请日：1995-08-17

Applicant: BASF AG

Inventor： SCHERZER DIETRICH ,  HAHN KLAUS ,  WITT MICHAEL ,  LORENZ MARIA

IPC: C08F2/18 ,  C08F2/44 ,  C08F12/08 ,  C08F257/02 ,  C08J9/20 ,  C08J11/06 ,  C08L25/04

Abstract: PCT No. PCT/EP95/03283 Sec. 371 Date Feb. 27, 1997 Sec. 102(e) Date Feb. 27, 1997 PCT Filed Aug. 17, 1995 PCT Pub. No. WO96/07694 PCT Pub. Date Mar. 14, 1996The present invention relates to expandable styrene polymers containing recycled polystyrene, having a recycled material content of from 10 to 50% by weight, based on the total weight of the polystyrene, to which alkyldi(2-hydroxyethyl)amines have been added during the polymerization.

公开(公告)号：AU8107194A

公开(公告)日：1995-06-13

申请号：AU8107194

申请日：1994-11-10

Applicant: BASF AG

Inventor： SCHERZER DIETRICH ,  HENN ROLF ,  HAHN KLAUS ,  WITT MICHAEL ,  HUSEMANN WOLFRAM ,  NAEGELE DIETER ,  RIETHUES MICHAEL ,  MATZKE GUNTER

IPC: C08F2/18 ,  C08F2/38 ,  C08F2/44 ,  C08J9/16 ,  C08J9/20 ,  C08J9/14 ,  C08L25/04