Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
PRODUCTION OF POLYAMIDE HAVING HIGH POLYMERIZATION DEGREE
Document Type and Number:
Japanese Patent JP01121321
Kind Code:
A
Abstract:

PURPOSE: To obtain the title polyamide having excellent spinnability with excel lent productivity, by connectedly polymerizing specific polyhexamethylene adipamide having a low polymerization degree with adipic acid dichloride in a solvent.

CONSTITUTION: Polyhexamethylene adipamide having a low polymerization degree of 2W200 and ≤40 mequiv./103g number of carboxyl terminal groups is connectedly polymerized with adipic acid dichloride in a solvent (e.g. N- methyl-2-pyrrolidone) to afford the aimed polyamide having >20, preferably 200W600 polymerization degree. Furthermore, a dissolution assistant, such as lithium chloride, calcium chloride or magnesium chloride, is preferably used.


Inventors:
Miwa, Takatoshi
Kataoka, Akira
Application Number:
JP1987000278396
Publication Date:
May 15, 1989
Filing Date:
November 05, 1987
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
ASAHI CHEM IND CO LTD
International Classes:
C08G69/28; C08F8/00; (IPC1-7): C08G69/28