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公开(公告)号：DE59505004D1
公开(公告)日：1999-03-11
申请号：DE59505004
申请日：1995-08-17
Applicant: BASF AG
Inventor： SCHERZER DIETRICH , HAHN KLAUS , WITT MICHAEL , LORENZ MARIA
Abstract: PCT No. PCT/EP95/03283 Sec. 371 Date Feb. 27, 1997 Sec. 102(e) Date Feb. 27, 1997 PCT Filed Aug. 17, 1995 PCT Pub. No. WO96/07694 PCT Pub. Date Mar. 14, 1996The present invention relates to expandable styrene polymers containing recycled polystyrene, having a recycled material content of from 10 to 50% by weight, based on the total weight of the polystyrene, to which alkyldi(2-hydroxyethyl)amines have been added during the polymerization.
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Patent Agency Ranking
公开(公告)号：AU657626B2
公开(公告)日：1995-03-16
申请号：AU4133893
申请日：1993-06-18
Applicant: BASF AG
Inventor： WITT MICHAEL , HAHN KLAUS , LORENZ MARIA
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：AU3385895A
公开(公告)日：1996-03-27
申请号：AU3385895
申请日：1995-08-17
Applicant: BASF AG
Inventor： SCHERZER DIETRICH , HAHN KLAUS , WITT MICHAEL , LORENZ MARIA
Abstract: PCT No. PCT/EP95/03283 Sec. 371 Date Feb. 27, 1997 Sec. 102(e) Date Feb. 27, 1997 PCT Filed Aug. 17, 1995 PCT Pub. No. WO96/07694 PCT Pub. Date Mar. 14, 1996The present invention relates to expandable styrene polymers containing recycled polystyrene, having a recycled material content of from 10 to 50% by weight, based on the total weight of the polystyrene, to which alkyldi(2-hydroxyethyl)amines have been added during the polymerization.
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公开(公告)号：CA2198782A1
公开(公告)日：1996-03-03
申请号：CA2198782
申请日：1995-08-17
Applicant: BASF AG
Inventor： SCHERZER DIETRICH , HAHN KLAUS , WITT MICHAEL , LORENZ MARIA
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：AU4133893A
公开(公告)日：1993-12-23
申请号：AU4133893
申请日：1993-06-18
Applicant: BASF AG
Inventor： WITT MICHAEL , HAHN KLAUS , LORENZ MARIA
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：AT176262T
公开(公告)日：1999-02-15
申请号：AT95930492
申请日：1995-08-17
Applicant: BASF AG
Inventor： SCHERZER DIETRICH , HAHN KLAUS , WITT MICHAEL , LORENZ MARIA
Abstract: PCT No. PCT/EP95/03283 Sec. 371 Date Feb. 27, 1997 Sec. 102(e) Date Feb. 27, 1997 PCT Filed Aug. 17, 1995 PCT Pub. No. WO96/07694 PCT Pub. Date Mar. 14, 1996The present invention relates to expandable styrene polymers containing recycled polystyrene, having a recycled material content of from 10 to 50% by weight, based on the total weight of the polystyrene, to which alkyldi(2-hydroxyethyl)amines have been added during the polymerization.
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