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公开(公告)号：DE19747541A1
公开(公告)日：1999-04-29
申请号：DE19747541
申请日：1997-10-28
Applicant: BASF AG
Inventor： HAHN KLAUS DR , LOEFFLER ACHIM DR , STEINBRECHER HORST , NAEGELE DIETER DR , HOHWILLER FRIEDER
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公开(公告)号：DE19747539A1
公开(公告)日：1999-04-29
申请号：DE19747539
申请日：1997-10-28
Applicant: BASF AG
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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：DE19749019A1
公开(公告)日：1999-05-12
申请号：DE19749019
申请日：1997-11-06
Applicant: BASF AG
Inventor： HAHN KLAUS DR , LOEFFLER ACHIM DR , STEINBRECHER HORST , NAEGELE DIETER DR , HOHWILLER FRIEDER
IPC: C08J9/224 , C08K5/3445 , C08L25/06 , C08J9/00 , C08K5/07
Abstract: An expandable polystyrene particle (I) containing blowing agent is coated with 0.001-0.5 wt.% of an imidazolidinone hydrophobic agent (II). Independent claims are included for: (i) a process for the production of (I) by adsorbing (II) onto fine particulate silicic acid and coating the expandable polystyrene particles or by addition of (II) to the preparation of expandable polystyrene particles by the polymerisation of styrene in an aqueous suspension; (ii) expanded polystyrene particles (III) coated with 0.001-0.5 wt.% (II); and (iii) a process for the production of (III) by foaming (I) or by coating expanded polystyrene particles with (II).
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Patent Agency Ranking
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：DE19749570A1
公开(公告)日：1999-05-12
申请号：DE19749570
申请日：1997-11-10
Applicant: BASF AG
Inventor： GLUECK GUISCARD DR , HAHN KLAUS DR , LOEFFLER ACHIM DR , LORENZ MARIA DR
Abstract: Expandable styrene polymers are produced by suspension polymerisation of styrene (and possibly up to 20 wt.% comonomer) using a polyfunctional peroxide (A) with a half-life (t) of 1 hour at 80-100 degrees C which initiates 2 or more polymer chains on decomposition and a peroxide (B) with t = 1 hour at 110-150 degrees C, in a mol ratio of (B):(A) greater than 40:60.
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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：DE19747538A1
公开(公告)日：1999-04-29
申请号：DE19747538
申请日：1997-10-28
Applicant: BASF AG
Inventor： HAHN KLAUS DR , LOEFFLER ACHIM DR , STEINBRECHER HORST , NAEGELE DIETER DR , HOHWILLER FRIEDER
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公开(公告)号：DE19619397A1
公开(公告)日：1997-11-20
申请号：DE19619397
申请日：1996-05-14
Applicant: BASF AG
Inventor： HAHN KLAUS DR , STEINBRECHER HORST , NAEGELE DIETER DR , LOEFFLER ACHIM DR , GUERTLER MANFRED , SCHMITT HAGEN , REICHERT JUERGEN DR
Abstract: The invention relates to expandable polystyrene particles which contain foaming agents and are coated with 0.01 to 0.5 wt. % of a waterproofing agent which melts above 10 DEG C and has an average particle size of less than 100 mu m. The particles are processed to form moulded foam structures with a reduced water absorption capacity.
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