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公开(公告)号：AT135386T
公开(公告)日：1996-03-15
申请号：AT91119699
申请日：1991-11-19
Applicant: BASF AG
Inventor： WALTER MANFRED DR , HUSEMANN WOLFRAM DR , NAEGELE DIETER DR
Abstract: Expandable styrene polymers of high expandability comprise a) a styrene polymer having a viscosity, measured in toluene, of from 55 to 80 [ml/g] and a melt flow index MFI (190 DEG C., 3.8 kp) of from 7.5 to 30 [g/10 min], b) from 1 to 10% by weight, based on a), of a C3- to C6-hydrocarbon as blowing agent, and, if desired, c) conventional assistants in effective amounts.
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公开(公告)号：DE4340368A1
公开(公告)日：1995-06-01
申请号：DE4340368
申请日：1993-11-26
Applicant: BASF AG
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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.
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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
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公开(公告)号：ES2103767T3
公开(公告)日：1997-10-01
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：DE59108794D1
公开(公告)日：1997-08-28
申请号：DE59108794
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：AT156164T
公开(公告)日：1997-08-15
申请号：AT94102044
申请日：1994-02-10
Applicant: BASF AG
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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
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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：DE59107542D1
公开(公告)日：1996-04-18
申请号：DE59107542
申请日：1991-11-19
Applicant: BASF AG
Inventor： WALTER MANFRED DR , HUSEMANN WOLFRAM DR , NAEGELE DIETER DR
Abstract: Expandable styrene polymers of high expandability comprise a) a styrene polymer having a viscosity, measured in toluene, of from 55 to 80 [ml/g] and a melt flow index MFI (190 DEG C., 3.8 kp) of from 7.5 to 30 [g/10 min], b) from 1 to 10% by weight, based on a), of a C3- to C6-hydrocarbon as blowing agent, and, if desired, c) conventional assistants in effective amounts.
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