Patent ID: 8415417
Filing Date: 2013-04-09
Classification: C08J,C08L,D01F,D21H

Abstract:
1. A non-fibrous polymer solution, the polymer solution comprising: 1 to 6 wt. % poly(paraphenylene terephthalamide) (PPTA), obtained from polymerizing para-phenylenediamine and terephthaloyl dichloride under a formation of hydrochloric acid, a polar amide solvent selected from the group consisting of N-methyl-2-pyrrolidone (NMP), N,N′-dimethylformamide, N,N′-dimethylacetamide (DMAc), tetramethylurea, and mixtures thereof; an alkali or an alkaline earth metal chloride selected from the group consisting of lithium chloride (LiCl) and calcium chloride (CaCl water; wherein: