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公开(公告)号：JPS6343960A
公开(公告)日：1988-02-25
申请号：JP19457587
申请日：1987-08-05
Applicant: BASF AG
Inventor： HANSU DEIITAA TSUETSUTORAA , HAINO CHIIRE , RAINAA NAHITORABU , RAINHARUTO SAPOTSUKU
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公开(公告)号：JPH05202157A
公开(公告)日：1993-08-10
申请号：JP18337592
申请日：1992-07-10
Applicant: BASF AG
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公开(公告)号：JPH01195014A
公开(公告)日：1989-08-04
申请号：JP30621588
申请日：1988-12-05
Applicant: BASF AG
Inventor： RAINHOORUDO UEEBAA , MANFUREETO WAIRUBATSUHERU , HERUMAN TATSUTSUERU , RUUDOUITSUHI CHIYURUN , HANSU DEIITAA TSUETSUTORAA , KURAUSU HINZERUMAN
IPC: B29C47/00 , B29C44/00 , B29C44/34 , B29C44/50 , B29C48/355 , B29K25/00 , B29K105/04 , C08J9/04 , C08J9/12 , C08L25/04
Abstract: PURPOSE: To prepare a foam substance having a small shrinkability, a high compressive strength and a small water absorbability by extruding a mixture of a specific styrene polymer and a blowing agent into a room at a predetermined gage pressure, and then solidifying the foam substance. CONSTITUTION: As a blowing agent, a mixture of a carbon dioxide or a carbon dioxide and 20 wt.% or less of a hydrocarbon or halohydrocarbon which is gaseous at a room temperature is used for an amount of 3 to 9 wt.% to a styrene polymer. For example, 100 pts. of a polystyrol, 1.5 pt. of a hexabromocyclododecane and 0.3 pt. of a talc for adjusting a size of a bubble are continuously supplied from an orifice E of an extruder 1, a blowing agent mixture is continuously press injected via an orifice D, homogenized in the extruder, and extruded into a space A at a gage pressure of 0.1 to 2 bars of an atmospheric pressure via a nozzle 2. Then, this foam is guided to a take-off unit 4 via a guide unit 3 coupled to the extruder, thereby generating a foam polystyrol plate.
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公开(公告)号：JPS5227829A
公开(公告)日：1977-03-02
申请号：JP10120876
申请日：1976-08-26
Applicant: BASF AG
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