Patent ID: 9194061
Filing Date: 2015-11-24
Classification: D01F,D21H,Y10T

Abstract:
1. A para-aramid fibrid film-like particle, wherein at least 95% of the bonds of aramid of the para-aramid fibrid film-like particle are para-oriented, and, and wherein the para-aramid fibrid film-like particle is obtained by polymerizing a para-oriented aromatic diamine and a para-oriented aromatic dicarboxylic acid halide at 20° C. to 70° C. in a polar amide solvent, in which 0.5-4 wt. % of alkali metal chloride or alkaline earth metal chloride is dissolved, using 0.950-1.050 mol of the para-oriented aromatic diamine per mol of the para-oriented aromatic dicarboxylic acid halide, to obtain a dope of 2-6 wt. % of an aramid polymer having at least 95% para-oriented bonds; and converting the dope to the para-aramid fibrid film-like particle.