Patent · US Active

Process for the preparation of polymer fibers from polymers dissolved in ionic liquids by means of an air gap spinning process

US11585015B2 · kind B2 · utility

0Cited by

9References

15Claims

0Family size

Assignee

DEUTSCHE INSTITUTE FÜR TEXTIL-UND FASERFORSCHUNG DENKENDORF · DE

Inventors

Falko Abels · Ludwigshafen, DE
Tomasz Cwik · Mannheim, DE
Ronald Beyer · Winnenden, DE
Frank Hermanutz · Leonberg, DE

Key dates

Filing date	Feb 1, 2017
Grant date	Feb 21, 2023
Priority date	—
Expiry date	Dec 6, 2037

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01F2/02
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a process for the production of polymer fibers from polymers dissolved in ionic liquids by means of an air gap spinning process, characterized in that a) a spinning solution that contains an ionic liquid and a dissolved polymer is produced; b) said spinning solution is guided through an extruder before it is divided into fibers via a die; and c) the obtained fibers are guided via an air gap through a coagulation bath.

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