Title:
POLYDIPHENIC AMIDE
Document Type and Number:
Japanese Patent JPH04342722
Kind Code:
A
Abstract:
PURPOSE:To obtain a new polydiphenic amide useful for fiber material, film material, etc., by improving solubility in an organic solvent while retaining peoperties of heat resistance, strength, etc., of wholly aromatic polyamide resin. CONSTITUTION:A diphenic acid halide (e.g. diphenic acid chloride) is reacted with diamines (e.g. 2,5-diaminotoluene) in a solvent, preferably N-methyl-2- pyrrolidone using diamines in an amount of 0.5-1.5 times stoichiometric amount at -20 deg.C to ambient temperature for 1-3hr and the reaction mixture is cleaned with methanol, etc., and the solvent is removed under reduced pressure to provide the objective polydiphenic acid amide having recurring structures expressed by formula I [Ar is formula II, formula III or formula IV (R is H, 1-4C alkyl, etc.; n is 0-3), etc.].
Inventors:
SAITO YOSHINORI
KASUYA KATSUTOSHI
KURATA NAOJI
SUGITA SHIGEO
KASUYA KATSUTOSHI
KURATA NAOJI
SUGITA SHIGEO
Application Number:
JP11445491A
Publication Date:
November 30, 1992
Filing Date:
May 20, 1991
Export Citation:
Assignee:
NIPPON JORYU KOGYO KK
NIPPON CATALYTIC CHEM IND
NIPPON CATALYTIC CHEM IND
International Classes:
C08G69/32; (IPC1-7): C08G69/32
Attorney, Agent or Firm:
Mikio Hatta (2 outside)