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公开(公告)号：EP0761728A3
公开(公告)日：1998-06-10
申请号：EP96113236
申请日：1996-08-19
Applicant: BASF AG
Inventor： SCHERZER DIETRICH DR , WITT MICHAEL DR , HAHN KLAUS DR , HUSEMANN WOLFRAM DR , LOEFFLER ACHIM DR , RIETHUES MICHAEL DR
CPC classification number: C08J9/0061 , C08J9/20 , C08J2325/06 , C08J2423/00
Abstract: Verfahren zur Herstellung von perlförmigen expandierbaren Styrolpolymerisaten durch Polymerisation von Styrol, gegebenenfalls unter Mitverwendung weiterer Comonomerer, in wäßriger Suspension in Gegenwart von Suspensionsstabilisatoren und üblicher styrollöslicher Polymerisationskatalysatoren und unter Zusatz eines Treibmittels und 0,01 bis 1 Gew.% eines Polyolefins, welches 1 bis 20 Gew.% Carboxylgruppen enthält.
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公开(公告)号：AT179734T
公开(公告)日：1999-05-15
申请号：AT95116406
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.
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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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公开(公告)号：ES2103767T5
公开(公告)日：2000-05-16
申请号：ES91119807
申请日：1991-11-21
Applicant: BASF AG
Inventor： WALTER MANFRED DR , HUSEMANN WOLFRAM DR , NAEGELE DIETER DR
IPC: C08J9/14 , C08F2/18 , C08F2/44 , C08F4/34 , C08J9/00 , C08J9/16 , C08K5/00 , C08K5/01 , C08L25/04
Abstract: Expandable styrene polymers, containing …… a) a styrene polymer … b) from 1 to 10% by weight, based on a), of a saturated C3- to C6-hydrocarbon as blowing agent, and optionally … c) conventional assistants in effective amounts, … characterised in that the benzene content is less than 1 ppm and the styrene content is less than 2000 ppm.
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Patent Agency Ranking
公开(公告)号：AT155801T
公开(公告)日：1997-08-15
申请号：AT91119807
申请日：1991-11-21
Applicant: BASF AG
Inventor： WALTER MANFRED DR , HUSEMANN WOLFRAM DR , NAEGELE DIETER DR
IPC: C08J9/14 , C08F2/18 , C08F2/44 , C08F4/34 , C08J9/00 , C08J9/16 , C08K5/00 , C08K5/01 , C08L25/04
Abstract: Expandable styrene polymers, containing …… a) a styrene polymer … b) from 1 to 10% by weight, based on a), of a saturated C3- to C6-hydrocarbon as blowing agent, and optionally … c) conventional assistants in effective amounts, … characterised in that the benzene content is less than 1 ppm and the styrene content is less than 2000 ppm.
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公开(公告)号：DE4305697A1
公开(公告)日：1994-09-01
申请号：DE4305697
申请日：1993-02-25
Applicant: BASF AG
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公开(公告)号：ES2131247T3
公开(公告)日：1999-07-16
申请号：ES95116406
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.
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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：DE59403492D1
公开(公告)日：1997-09-04
申请号：DE59403492
申请日：1994-02-10
Applicant: BASF AG
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