公开(公告)号：DE4231512A1

公开(公告)日：1994-03-24

申请号：DE4231512

申请日：1992-09-21

Applicant: BASF AG

Inventor： WITT MICHAEL DR ,  HENN ROLF DR

IPC: C08J9/12 ,  C08G79/00 ,  C08J9/00 ,  C08J9/18 ,  C08K3/00 ,  C08K3/34 ,  C08K3/38 ,  C08K5/55 ,  C08L25/04 ,  C08L83/16 ,  C08J9/24 ,  C08L23/02 ,  C08L43/04 ,  C08L83/04 ,  C08L85/04

Abstract: Particulate expandable thermoplastic polymers containing a) at least one organic boron-silicon compound, b) at least one thermoplastic polymer and c) a foaming agent, process for producing them and the foamed materials made with the use of these expandable thermoplastic polymers.

公开(公告)号：DE4220242A1

公开(公告)日：1993-12-23

申请号：DE4220242

申请日：1992-06-20

Applicant: BASF AG

Inventor： WITT MICHAEL DR ,  HAHN KLAUS DR ,  LORENZ MARIA DR

IPC: C08J9/18 ,  C08K3/32 ,  C08K5/42 ,  C08K5/01 ,  C08K3/18 ,  C08L25/04 ,  B29C67/20 ,  C01B25/42

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：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：AT178922T

公开(公告)日：1999-04-15

申请号：AT95116927

申请日：1995-10-27

Applicant: BASF AG

Inventor： SCHERZER DIETRICH DR ,  WITT MICHAEL DR ,  HAHN KLAUS DR ,  ALICKE GERHARD ,  DEMBEK GERHARD DR ,  RIETHUES MICHAEL DR ,  WOLFF BERNARDO DR

IPC: C08J9/14 ,  C08J9/00 ,  C08J9/16 ,  C08J11/06 ,  C08L23/00 ,  C08L23/06 ,  C08L25/00 ,  C08L25/04 ,  C08L25/06

公开(公告)号：ES2104199T3

公开(公告)日：1997-10-01

申请号：ES94102044

申请日：1994-02-10

Applicant: BASF AG

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

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：AT156164T

公开(公告)日：1997-08-15

申请号：AT94102044

申请日：1994-02-10

Applicant: BASF AG

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

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：DK0616006T3

公开(公告)日：1997-07-07

申请号：DK94103471

申请日：1994-03-08

Applicant: BASF AG

Inventor： HAHN KLAUS DR ,  WITT MICHAEL DR ,  SCHERZER DIETRICH DR ,  HENN ROLF DR ,  BACK WOLF-DIETER DR

IPC: C08J11/14 ,  A61L9/01 ,  C08J11/06 ,  C08J11/16

公开(公告)号：DE19531650A1

公开(公告)日：1997-03-06

申请号：DE19531650

申请日：1995-08-29

Applicant: BASF AG

Inventor： SCHERZER DIETRICH DR ,  WITT MICHAEL DR ,  HAHN KLAUS DR ,  HUSEMANN WOLFRAM DR ,  LOEFFLER ACHIM DR ,  RIETHUES MICHAEL DR

IPC: C08F2/20 ,  C08F2/44 ,  C08J9/00 ,  C08J9/20 ,  C08F12/08

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：ES2086828T3

公开(公告)日：1996-07-01

申请号：ES93109566

申请日：1993-06-16

Applicant: BASF AG

Inventor： WITT MICHAEL DR ,  WALTER MANFRED DR

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

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.