Patent · US Active

Method and system for producing a spinning solution for producing a polymer fiber

US8129460B2 · kind B2 · utility

3Cited by

5References

10Claims

0Family size

Assignee

LIST AG · CH

Inventors

Reinhard Geisler · Schopfheim, DE
Pierre Liechti · Muttenz, CH
Thomas Isenschmid · Magden, CH

Key dates

Filing date	May 14, 2008
Grant date	Mar 6, 2012
Priority date	—
Expiry date	Sep 8, 2028

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01D1/02
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

A method for producing a spinning solution for producing a polymer fiber, particularly a p-aramid fiber, the polymer being blended with a solvent, mixed, melted, homogenized, and degassed and then discharged, liquid sulfuric acid being used as the solvent and at least the mixing, homogenization, and degassing taking place in a preferably continuously operated single or double cell reactor (1).

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.