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公开(公告)号：AT128475T
公开(公告)日：1995-10-15
申请号：AT91112581
申请日：1991-07-26
Applicant: BASF AG
Inventor： WALTER MANFRED DR , WASSMER KARL-HEINZ DR , LORENZ MARIA DR
Abstract: Bead-form, antistatic, expandable styrene polymers containing …… a) a styrene polymer, … b) from 0.5 to 3% by weight, based on a), of a coating containing …… b1)from 10 to 70% by weight of finely divided silica, … b2)from 20 to 80% by weight of a hydroxyl-containing quaternary ammonium salt and, if desired, … b3)from 0.05 to 20% by weight of a conventional adhesion promoter and … b4)from 10 to 30% by weight of a conventional agent for shortening the cooling time, …… c) from 1 to 8% by weight, based on a), of a C3- to C6-hydrocarbon as blowing agent, and, if desired, … d) conventional additives in effective amounts. …
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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：DE19640886A1
公开(公告)日：1998-04-09
申请号：DE19640886
申请日：1996-10-04
Applicant: BASF AG
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公开(公告)号：DE59301851D1
公开(公告)日：1996-04-18
申请号：DE59301851
申请日：1993-06-16
Applicant: BASF AG
Inventor： WITT MICHAEL DR , HAHN KLAUS DR , LORENZ MARIA DR
IPC: C08J9/18
Abstract: A process for the preparation of expandable thermoplastic polymers by post-impregnation with a blowing agent in liquid suspension in the presence of a mixture of magnesium pyrophosphate and a sulphonate group-containing extender as suspension stabiliser in a reactor, characterised in that a) the magnesium pyrophosphate is prepared in the same reactor at a temperature below 50 DEG C by addition of a solid magnesium salt in an amount corresponding to an at least 3% stoichiometric excess, based on pyrophosphate, to an aqueous solution of the pyrophosphate, b) the suspension medium is heated to a temperature in the range between 70 and 140 DEG C, and c) the blowing agent is added in this temperature range.
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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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Patent Agency Ranking
公开(公告)号：AT135387T
公开(公告)日：1996-03-15
申请号：AT93109565
申请日：1993-06-16
Applicant: BASF AG
Inventor： WITT MICHAEL DR , HAHN KLAUS DR , LORENZ MARIA DR
IPC: C08J9/18
Abstract: A process for the preparation of expandable thermoplastic polymers by post-impregnation with a blowing agent in liquid suspension in the presence of a mixture of magnesium pyrophosphate and a sulphonate group-containing extender as suspension stabiliser in a reactor, characterised in that a) the magnesium pyrophosphate is prepared in the same reactor at a temperature below 50 DEG C by addition of a solid magnesium salt in an amount corresponding to an at least 3% stoichiometric excess, based on pyrophosphate, to an aqueous solution of the pyrophosphate, b) the suspension medium is heated to a temperature in the range between 70 and 140 DEG C, and c) the blowing agent is added in this temperature range.
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公开(公告)号：AU647160B2
公开(公告)日：1994-03-17
申请号：AU8162191
申请日：1991-08-05
Applicant: BASF AG
Inventor： WALTER MANFRED DR , WASSMER KARL HEINZ DR , LORENZ MARIA DR
Abstract: Bead-form, antistatic, expandable styrene polymers containing …… a) a styrene polymer, … b) from 0.5 to 3% by weight, based on a), of a coating containing …… b1)from 10 to 70% by weight of finely divided silica, … b2)from 20 to 80% by weight of a hydroxyl-containing quaternary ammonium salt and, if desired, … b3)from 0.05 to 20% by weight of a conventional adhesion promoter and … b4)from 10 to 30% by weight of a conventional agent for shortening the cooling time, …… c) from 1 to 8% by weight, based on a), of a C3- to C6-hydrocarbon as blowing agent, and, if desired, … d) conventional additives in effective amounts. …
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公开(公告)号：ES2219718T3
公开(公告)日：2004-12-01
申请号：ES97117083
申请日：1997-10-02
Applicant: BASF AG
Inventor： SCHERZER DIETRICH DR , HAHN KLAUS DR , LORENZ MARIA DR , HERRMANN GUNTER DR , DIETZEN FRANZ-JOSEF DR , EHRMANN GERD DR
Abstract: LA INVENCION SE REFIERE A UN POLIMERO DE ESTIRENO EXPANDIBLE Y PARTICULADO, QUE CONTIENE UN GASIFICANTE VOLATIL, ASI COMO UN RETARDADOR DE LA LLAMA SIN HALOGENOS, UNA MEZCLA DE UN COMPUESTO DE FOSFORO Y UN HIDROXIDO METALICO DESHIDRATANTE, ASI COMO LAS ESPUMAS FABRICADAS A PARTIR DE LOS MISMOS Y QUE HAN SUPERADO LA PRUEBA B 2 DE INCENDIOS (SEGUN DIN 4102).
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公开(公告)号：ES2084416T3
公开(公告)日：1996-05-01
申请号：ES93109565
申请日：1993-06-16
Applicant: BASF AG
Inventor： WITT MICHAEL DR , HAHN KLAUS DR , LORENZ MARIA DR
IPC: C08J9/18
Abstract: A process for the preparation of expandable thermoplastic polymers by post-impregnation with a blowing agent in liquid suspension in the presence of a mixture of magnesium pyrophosphate and a sulphonate group-containing extender as suspension stabiliser in a reactor, characterised in that a) the magnesium pyrophosphate is prepared in the same reactor at a temperature below 50 DEG C by addition of a solid magnesium salt in an amount corresponding to an at least 3% stoichiometric excess, based on pyrophosphate, to an aqueous solution of the pyrophosphate, b) the suspension medium is heated to a temperature in the range between 70 and 140 DEG C, and c) the blowing agent is added in this temperature range.
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公开(公告)号：ES2077122T3
公开(公告)日：1995-11-16
申请号：ES91112581
申请日：1991-07-26
Applicant: BASF AG
Inventor： WALTER MANFRED DR , WASSMER KARL-HEINZ DR , LORENZ MARIA DR
Abstract: Bead-form, antistatic, expandable styrene polymers containing …… a) a styrene polymer, … b) from 0.5 to 3% by weight, based on a), of a coating containing …… b1)from 10 to 70% by weight of finely divided silica, … b2)from 20 to 80% by weight of a hydroxyl-containing quaternary ammonium salt and, if desired, … b3)from 0.05 to 20% by weight of a conventional adhesion promoter and … b4)from 10 to 30% by weight of a conventional agent for shortening the cooling time, …… c) from 1 to 8% by weight, based on a), of a C3- to C6-hydrocarbon as blowing agent, and, if desired, … d) conventional additives in effective amounts. …
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