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公开(公告)号：DE19645948A1
公开(公告)日：1998-05-14
申请号：DE19645948
申请日：1996-11-07
Applicant: BASF AG
Inventor： BAUMGAERTEL MICHAEL DR , DEMBEK GERHARD DR , HAHN KLAUS DR , HOLOCH JAN DR , HUSEMANN WOLFRAM DR , KAEMPFER KNUT DR , LAY PETER N , RUECK SWEN , SCHIESL MICHAEL , WITT MICHAEL DR
IPC: C08F257/02 , C08J9/20 , C08F12/08 , C08L25/06
Abstract: The invention concerns a continuous process for preparing expandible styrene polymers by polymerizing styrene in the presence of expanding agents in three stages: a) preparing a solution of polystyrene in styrene; b) dispersing the solution in an aqueous phase; and c) continuously polymerizing out the prepolymer in an aqueous suspension.
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公开(公告)号：DE59505640D1
公开(公告)日：1999-05-20
申请号：DE59505640
申请日：1995-10-27
Applicant: BASF AG
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公开(公告)号：DE3851454D1
公开(公告)日：1994-10-20
申请号：DE3851454
申请日：1988-03-05
Applicant: BASF AG
Inventor： TATZEL HERMANN , ZUERN LUDWIG DR , ZETTLER HANS DIETER , SCHNEIDER WOLFBERG DR , DEMBEK GERHARD DR
IPC: B29C44/00 , B29B9/06 , B29C44/34 , B29C44/50 , B29K23/00 , C08J9/16 , C08J9/22 , C08J9/228 , B29C67/22
Abstract: Polyolefin foams which have a density of from 30 to 300 g/l, do not exhibit after-shrinkage and possess taut cells are prepared by letting down a polyolefin/blowing agent gel, the latter first being let down to 0.1-10 bar gage pressure and the foam being kept at this pressure until it has cooled to at least 20 DEG C. below the expansion temperature.
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公开(公告)号：CZ9800501A3
公开(公告)日：1998-07-15
申请号：CZ50198
申请日：1996-08-19
Applicant: BASF AG
Inventor： LAY PETER NIKOLAUS , RUCK SWEN , SCHIESSL MICHAEL , WITT MICHAEL DR , BAUMGARTEL MICHAEL DR , DEMBEK GERHARD DR , HAHN KLAUS DR , HOLOCH JAN DR , HUSEMANN WOLFRAM DR , KAEMPFER KNUT DR , ZETTLER HANS DIETER
CPC classification number: C08F12/08
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公开(公告)号：CZ50198A3
公开(公告)日：1998-07-15
申请号：CZ50198
申请日：1996-08-19
Applicant: BASF AG
Inventor： LAY PETER NIKOLAUS , RUCK SWEN , SCHIESSL MICHAEL , WITT MICHAEL DR , BAUMGARTEL MICHAEL DR , DEMBEK GERHARD DR , HAHN KLAUS DR , HOLOCH JAN DR , HUSEMANN WOLFRAM DR , KAEMPFER KNUT DR , ZETTLER HANS DIETER
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.
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Patent Agency Ranking
公开(公告)号：DE3843536A1
公开(公告)日：1990-06-28
申请号：DE3843536
申请日：1988-12-23
Applicant: BASF AG
Inventor： HAHN KLAUS DR , GUHR UWE DR , NAARMANN HERBERT DR , RUPPERT GEORG , BACK WOLF-DIETER DR , DEMBEK GERHARD DR
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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
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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
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.
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公开(公告)号：DE4439458A1
公开(公告)日：1996-05-09
申请号：DE4439458
申请日：1994-11-04
Applicant: BASF AG
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公开(公告)号：DE58900766D1
公开(公告)日：1992-03-05
申请号：DE58900766
申请日：1989-12-19
Applicant: BASF AG
Inventor： HAHN KLAUS DR , GUHR UWE DR , NAARMANN HERBERT DR , RUPPERT GEORG , BACK WOLF-DIETER DR , DEMBEK GERHARD DR
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