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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：DE59206654D1
公开(公告)日：1996-08-01
申请号：DE59206654
申请日：1992-10-31
Applicant: BASF AG
Inventor： HAHN KLAUS DR , KAEMPFER KNUT DR , HINTZ HANS DR , SCHAEFER ANTHONY DR , RIETHUES MICHAEL DR , WITT MICHAEL DR
IPC: C08J9/12 , C08J9/00 , C08J9/16 , C08J9/18 , C08K5/00 , C08K5/05 , C08K5/06 , C08K5/17 , C08L25/04 , C08L71/00 , C08L71/02
Abstract: The invention relates to expandable styrene polymers containing a) a styrene polymer, b) and at least one carbon dioxide absorber, mixed or copolymerized with the above, in an amount of from 0.01 to 50% by weight, based on the sum of a) and b), and c) a blowing agent or blowing agent mixture in an amount of from 0.5 to 12% by weight, where the blowing agent or blowing agent mixture comprises c1) from 10 to 100% by weight of carbon dioxide and c2) from 0 to 90% by weight of at least one further blowing agent. The invention furthermore relates to the styrene polymers containing a carbon dioxide absorber, to the styrene polymer foams obtainable from the expandable styrene polymers, and to an improved process for impregnating styrene polymers with carbon dioxide-containing blowing agents or blowing agent mixtures.
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Patent Agency Ranking
公开(公告)号：AT139791T
公开(公告)日：1996-07-15
申请号：AT92118664
申请日：1992-10-31
Applicant: BASF AG
Inventor： HAHN KLAUS DR , KAEMPFER KNUT DR , HINTZ HANS DR , SCHAEFER ANTHONY DR , RIETHUES MICHAEL DR , WITT MICHAEL DR
IPC: C08J9/12 , C08J9/00 , C08J9/16 , C08J9/18 , C08K5/00 , C08K5/05 , C08K5/06 , C08K5/17 , C08L25/04 , C08L71/00 , C08L71/02
Abstract: The invention relates to expandable styrene polymers containing a) a styrene polymer, b) and at least one carbon dioxide absorber, mixed or copolymerized with the above, in an amount of from 0.01 to 50% by weight, based on the sum of a) and b), and c) a blowing agent or blowing agent mixture in an amount of from 0.5 to 12% by weight, where the blowing agent or blowing agent mixture comprises c1) from 10 to 100% by weight of carbon dioxide and c2) from 0 to 90% by weight of at least one further blowing agent. The invention furthermore relates to the styrene polymers containing a carbon dioxide absorber, to the styrene polymer foams obtainable from the expandable styrene polymers, and to an improved process for impregnating styrene polymers with carbon dioxide-containing blowing agents or blowing agent mixtures.
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公开(公告)号：DE4431211A1
公开(公告)日：1996-03-07
申请号：DE4431211
申请日：1994-09-02
Applicant: BASF AG
Inventor： SCHERZER DIETRICH DR , HAHN KLAUS DR , WITT MICHAEL DR , LORENZ MARIA DR
Abstract: The object of the invention are expandable styrene polymers containing polystyrene recyclate with a recyclate content of 50 to 1000 wt.% in relation to the total weight of the polystyrene, to which alkyl di(2-hydroxy ethyl) amines are added during polymerisation.
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公开(公告)号：DE4137405A1
公开(公告)日：1993-05-19
申请号：DE4137405
申请日：1991-11-14
Applicant: BASF AG
Inventor： HAHN KLAUS DR , KAEMPFER KNUT DR , HINTZ HANS DR , SCHAEFER ANTHONY DR , RIETHUES MICHAEL DR , WITT MICHAEL DR
IPC: C08J9/12 , C08J9/00 , C08J9/16 , C08J9/18 , C08K5/00 , C08K5/05 , C08K5/06 , C08K5/17 , C08L25/04 , C08L71/00 , C08L71/02
Abstract: The invention relates to expandable styrene polymers containing a) a styrene polymer, b) and at least one carbon dioxide absorber, mixed or copolymerized with the above, in an amount of from 0.01 to 50% by weight, based on the sum of a) and b), and c) a blowing agent or blowing agent mixture in an amount of from 0.5 to 12% by weight, where the blowing agent or blowing agent mixture comprises c1) from 10 to 100% by weight of carbon dioxide and c2) from 0 to 90% by weight of at least one further blowing agent. The invention furthermore relates to the styrene polymers containing a carbon dioxide absorber, to the styrene polymer foams obtainable from the expandable styrene polymers, and to an improved process for impregnating styrene polymers with carbon dioxide-containing blowing agents or blowing agent mixtures.
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公开(公告)号：ES2102083T3
公开(公告)日：1997-07-16
申请号：ES94103471
申请日：1994-03-08
Applicant: BASF AG
Inventor： WITT MICHAEL DR , SCHERZER DIETRICH DR , HAHN KLAUS DR , HENN ROLF DR , BACK WOLF-DIETER DR
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公开(公告)号：DE4308636A1
公开(公告)日：1994-09-22
申请号：DE4308636
申请日：1993-03-18
Applicant: BASF AG
Inventor： WITT MICHAEL DR , SCHERZER DIETRICH DR , HAHN KLAUS DR , NAEGELE DIETER DR
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.
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