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公开(公告)号：DE4038044A1
公开(公告)日：1992-06-04
申请号：DE4038044
申请日：1990-11-29
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：MY118804A
公开(公告)日：2005-01-31
申请号：MYPI9400314
申请日：1994-02-14
Applicant: BASF AG
Inventor： SCHERZER DIETRICH DR , KLAUS HAHN DR , RIETHUES MICHAEL DR , NAEGELE DIETER DR , WITT MICHAEL DR , HUSEMANN WOLFRAM DR
IPC: C08J9/20 , C08F2/20 , C08F2/44 , C08J9/00 , C08K5/00 , C08K5/01 , C08K5/03 , C08L23/06 , C08L25/04 , C08L25/06 , C08L89/00
Abstract: BEAD-FORM, EXPANDABLE STYRENE POLYMERS CONTAINING, BASED ON THE STYRENE POLYMER, FROM 0.005 TO1.5 BY WEIGHT OF POLYETHYLENE WAX AND FROM 0.005 TO 1 BY WEIGHT OF DIMERIC a-METHYLSTYRENE, AND A PROCESS FOR THE PREPARATION THEREOF.
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Patent Agency Ranking
公开(公告)号：DE19647599A1
公开(公告)日：1998-05-20
申请号：DE19647599
申请日：1996-11-18
Applicant: BASF AG
Inventor： SCHERZER DIETRICH DR , HAHN KLAUS DR , BATSCHEIDER KARL-HEINZ , WITT MICHAEL DR , WAGNER BERNHARD DR , HUSEMANN WOLFRAM DR
Abstract: The invention relates to a method for drying water-containing styrol polymerizates, in which the particles are treated with an aqueous salt solution.
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公开(公告)号：DE19548311A1
公开(公告)日：1997-06-26
申请号：DE19548311
申请日：1995-12-22
Applicant: BASF AG
Inventor： LOEFFLER ACHIM DR , SCHERZER DIETRICH DR , BATSCHEIDER KARL-HEINZ , HAHN KLAUS DR , WITT MICHAEL DR , WAGNER BERNHARD DR , HUSEMANN WOLFRAM DR
Abstract: In the preparation of expandable styrene polymer beads by polymerising styrene and optionally comonomers in aqueous suspension in the presence of suspension stabilisers and normal styrene-soluble polymerisation catalysts and with addition of a blowing agent, the novelty is that polymerisation is carried out in the presence of 0.1-1.5 mole electrolyte/l water.
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公开(公告)号：ES2084754T3
公开(公告)日：1996-05-16
申请号：ES91119699
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：DE4438376A1
公开(公告)日：1996-05-02
申请号：DE4438376
申请日：1994-10-27
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 , C08J11/04 , C08L51/06
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：DE4038043A1
公开(公告)日：1992-06-04
申请号：DE4038043
申请日：1990-11-29
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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