Title:
ポリアミドの製造方法
Document Type and Number:
Japanese Patent JP5304437
Kind Code:
B2
Abstract:
A process for producing polyamide which comprises directly melt polymerizing a diamine component, which comprises 70% by mole or more of xylylenediamine comprising 20% by mole or more of para-xylylenediamine, and a dicarboxylic acid component in the substantial absence of solvents in a reaction apparatus of the batch type, wherein a stirring apparatus disposed in the reaction apparatus and used for stirring the melted polymer in the apparatus comprises: (1) a rotating shaft connected to a driving member for stirring, (2) two or more stirring rods disposed in the substantially vertical direction which are cylinder-shaped members or plate-shaped members moving along the circumference of a circle having the center at the rotating shaft, and (3) a connecting member which connects the rotating shaft and the stirring rods; distances between the center line of the rotating shaft and center lines of the two or more stirring rods are each 15% or greater of the inner diameter of the reaction apparatus; the connecting member and the rotating shaft are disposed above the liquid surface of the melted polymer; and stirring is conducted in a manner such that the circumferential speed of the stirring rods is 30 m/minute or greater.
Inventors:
Hideyuki Kurose
Shinohara Katsumi
Minoru Kikuchi
Tomomichi Kanda
Shinohara Katsumi
Minoru Kikuchi
Tomomichi Kanda
Application Number:
JP2009125297A
Publication Date:
October 02, 2013
Filing Date:
May 25, 2009
Export Citation:
Assignee:
Mitsubishi Gas Chemical Co., Ltd.
International Classes:
C08G69/28
Domestic Patent References:
| JP2002348304A | ||||
| JP10158307A | ||||
| JP7324130A | ||||
| JP2003159523A | ||||
| JP63157238U | ||||
| JP42016231Y1 | ||||
| JP9108557A | ||||
| JP8071397A |