公开(公告)号：DE59505004D1

公开(公告)日：1999-03-11

申请号：DE59505004

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

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：MX9801167A

公开(公告)日：1998-04-30

申请号：MX9801167

申请日：1996-08-19

Applicant: BASF AG

Inventor： LAY PETER NIKOLAUS ,  RUCK SWEN ,  SCHIESSL MICHAEL ,  WITT MICHAEL ,  ZETTLER HANS DIETER ,  BAUMGARTEL MICHAEL ,  DEMBEK GERHARD ,  HAHN KLAUS ,  HOLOCH JAN

IPC: C08J9/16 ,  B01J13/14 ,  B01J19/18 ,  B01J19/24 ,  C08F2/02 ,  C08F2/18 ,  C08F12/08 ,  C08J09/16

Abstract: La presente invencion se refiere a un proceso continuo para la preparacion de polímeros de estireno expansible por polimerizacion del estireno en presencia de agentes de soplado en 3 pasos: a. prepolimerizacion del estireno en bloque, b. dispersion del prepolímero en una fase acuosa, y c. polimerizacion del prepolímero hasta terminacion en suspension acuosa.

公开(公告)号：DE59402834D1

公开(公告)日：1997-06-26

申请号：DE59402834

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：AT153356T

公开(公告)日：1997-06-15

申请号：AT94910369

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 ,  C08L25/08

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：AU6822496A

公开(公告)日：1997-03-19

申请号：AU6822496

申请日：1996-08-19

Applicant: BASF AG

Inventor： LAY PETER NIKOLAUS ,  RUCK SWEN ,  SCHIESSL MICHAEL ,  WITT MICHAEL ,  ZETTLER HANS DIETER ,  BAUMGARTEL 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 ,  C08L25/04

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：AU6282894A

公开(公告)日：1994-10-11

申请号：AU6282894

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 ,  C08L25/08

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：AT176262T

公开(公告)日：1999-02-15

申请号：AT95930492

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：PL325059A1

公开(公告)日：1998-07-06

申请号：PL32505996

申请日：1996-08-19

Applicant: BASF AG

Inventor： LAY PETER NIKOLAUS ,  RUECK SWEN ,  SCHIESSL MICHAEL ,  WITT MICHAEL ,  ZETTLER HANS DIETER ,  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 ,  C08E112/08

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：AU7694994A

公开(公告)日：1995-04-10

申请号：AU7694994

申请日：1994-09-07

Applicant: BASF AG

Inventor： SCHERZER DIETRICH ,  HENN ROLF ,  WITT MICHAEL ,  HAHN KLAUS ,  RIETHUES MICHAEL

IPC: C08J9/16 ,  C08F2/18 ,  C08F2/44 ,  C08J9/20 ,  C08K5/134 ,  C08J9/00 ,  C08J9/224 ,  C08L25/04

Abstract: Pearl-shaped, expandable styrene polymers contain (a) a styrene polymer; (b) 0.03 to 1.5 % by weight, in relation to (a), of a sterically inhibited phenol homogenously distributed in the styrene polymer and/or applied as a coating on the surface of the styrene polymer; (c) an expanding agent or mixture of expanding agents; and if required (d) effective amounts of usual additives. Also disclosed is a process for producing said polymers, according to which styrene, if required with other comonomers, is polymerised in an aqueous suspension in the presence of suspension stabilisers and usual styrene-soluble polymerisation catalysts, with addition of an expanding agent or mixture of expanding agents, and if required of an effective amount of usual additives and of up to 1.5 % by weight, in relation to styrene and comonomers, of sterically hindered phenols. The thus obtained pearl-shaped, expandable styrene polymers are coated with up to 1.5 % by weight, in relation to the expanding agent-free styrene polymer, of sterically inhibited phenols, provided that the expandable styrene polymers that are homogenously distributed in the styrene polymer and/or applied as a surface coating contain in total 0.03 to 1.5 % by weight of sterically inhibited phenols, in relation to the styrene polymer.

公开(公告)号：AU657625B2

公开(公告)日：1995-03-16

申请号：AU4133793

申请日：1993-06-18

Applicant: BASF AG

Inventor： WITT MICHAEL ,  WALTER MANFRED

IPC: C08J9/16 ,  C08F2/18 ,  C08F2/44 ,  C08F12/00 ,  C08F12/08 ,  C08J9/12 ,  C08J9/20 ,  C08K13/02

Abstract: Bead-formed expandable styrene polymers are obtained by suspension polymerisation of styrene with addition of from 1 to 10% by weight of C3- to C7-hydrocarbons and/or carbon dioxide as blowing agent and optionally conventional additives, where the suspension stabiliser used is a mixture of magnesium pyrophosphate, a sulphonate group-containing extender and an alkali or alkaline-earth metal carboxylate, magnesium pyrophosphate being prepared directly before the polymerisation by combining an aqueous solution with an alkali metal pyrophosphate with at least the stoichiometrically necessary amount of a magnesium salt.