Patent · US Expired

Process for hygroscopic, fibres and filaments of synthetic polymers

US4336214A · kind A · utility

4Cited by

2References

4Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Ulrich Reinehr · Dormagen, DE
Hermann-Josef Jungverdorben · Dormagen, DE
Toni Herbertz · Dormagen, DE
Alfred Nogaj · Dormagen, DE
Peter Kleinschmidt · Munich, DE

Key dates

Filing date	Jan 31, 1980
Grant date	Jun 22, 1982
Priority date	—
Expiry date	Jan 31, 2000

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/2935
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The invention relates to hygroscopic filaments and fibres of synthetic high polymers. The improved hygroscopicity compared with known synthetic fibres is due to the fact, that in a conventional dry-spun process a liquid is added to the spinning solvent which liquid has a higher boiling point than the spinning solvent used, which liquid is readily miscible both with the spinning solvent and water and which represents a non-solvent for the polymer to be spun.

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