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Title:
ポリアミドの製造方法
Document Type and Number:
Japanese Patent JP5633519
Kind Code:
B2
Abstract:
An economical batchwise production method of polyamide with good quality by the polycondensation in which a diamine component including 70 mol% or more of a xylylenediamine which includes 20 mol% or more of p-xylylenediamine is added to a dicarboxylic acid component in a batchwise reaction tank equipped with a partial condenser. The diamine component is added while maintaining the whole reaction system in fluid state under pressure. The pressure is reduced during the time that the molar ratio is within a specific range while continuing the addition.

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Inventors:
菊地 稔
篠原 克巳
Application Number:
JP2011543252A
Publication Date:
December 03, 2014
Filing Date:
November 24, 2010
Export Citation:
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Assignee:
三菱瓦斯化学株式会社
International Classes:
C08G69/28
Domestic Patent References:
JPH07324130A1995-12-12
JP2005139219A2005-06-02
JP2001200053A2001-07-24
JPS58111829A1983-07-04
JPS57200420A1982-12-08



 
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