发明名称 |
Method for the production of polyamides in extruders |
摘要 |
In a process for preparing a polyamide based on dicarboxylic acids and diamines in an extruder, a solid mixture comprising a monomer mixture composed of 50 mol % of dicarboxylic acid mixture composed of from 60 to 88 % by weight of terephthalic acid and from 12 to 40% by weight of isophthalic acid, in which up to 20% by weight of the dicarboxylic acid mixture may also be replaced by other dicarboxylic acids, and 50 mol % of hexamethylenediamine which may be up to 20% by weight replaced by other C2-30-diamines, in a corotatory twin-screw extruder for a residence time of from 10 seconds to 30 minutes, is heated to a temperature in the range from 150 to 400° C. while removing steam and if appropriate diamines through venting orifices. |
申请公布号 |
EP2160431(A1) |
申请公布日期 |
2010.03.10 |
申请号 |
EP20080760827 |
申请日期 |
2008.06.11 |
申请人 |
BASF SE |
发明人 |
DESBOIS, PHILIPPE;KOPIETZ, MICHAEL;NEUHAUS, RALF;STAWITZKI, HAGEN;WEIS, HANS-JOACHIM;ENGELMANN, JOCHEN |
分类号 |
C08G69/06;C08G69/30 |
主分类号 |
C08G69/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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