Title:
【発明の名称】共重合ポリアミドの連続製造方法、共重合ポリアミド及びその使用方法
Document Type and Number:
Japanese Patent JP2003515643
Kind Code:
A
Abstract:
A process for continuous production of copolyamides based on a lactam (I), a diamine (II) and a dicarboxylic acid (III) comprisesreacting a mixture (IV) comprising a diamine (II), a dicarboxylic acid (III) and water in a first reaction zone at a pressure in the range from 1.3*10<5 >to 2.5*10<5 >Pa in the entry zone of the reaction zone and at a temperature above the melting point of polymer (V) to a conversion, based on the molar amounts of diamine (II) and dicarboxylic acid (III), of at least 80% to form a polymer (V),reacting a mixture (VI) comprising lactam (I) and water in a second reaction zone at a pressure in the range from 5*10<5 >to 40*10<5 >Pa and at a temperature above the melting point of polymer (VII) to a conversion, based on the molar amount of lactam (I), of at least 80% to form a polymer (VII),then reacting polymer (V) and polymer (VII) with each other in a third reaction zone at a pressure in the range from 1*10<5 >to 1.5*10<5 >Pa in the entry zone of the reaction zone at temperatures above the melting point of polymer (VIII) to form a polymer (VIII), said polymer (VIII) having a 95° C. water extractables content, based on lactam (I), diamine (II) and dicarboxylic acid (III), of not more than 10% by weight, andthen extracting the polymer (VIII) with water to obtain the copolyamide.
Inventors:
Düninger, Jürgen
Getz, walter
Ludwig, Alphonse
Pipper, gunter
Getz, walter
Ludwig, Alphonse
Pipper, gunter
Application Number:
JP2001541105A
Publication Date:
May 07, 2003
Filing Date:
November 15, 2000
Export Citation:
Assignee:
BASF Akchen Gezel Shaft
International Classes:
C08G69/00; C08G69/02; C08G69/04; C08G69/14; C08J5/18; C08G69/26; C08G69/28; C08G69/36; C08G69/48; D01F6/80; (IPC1-7): C08G69/02; C08J5/18; D01F6/80
Domestic Patent References:
| JP2000510892A | 2000-08-22 | |||
| JPH02296827A | 1990-12-07 |
Foreign References:
| WO1999036610A1 | 1999-07-22 |
Attorney, Agent or Firm:
Sato Eto