Patent · US Expired

Process for continuously dyeing filaments of slivers of wet-spun acrylonitrile polymers

US4013406A · kind A · utility

3Cited by

5References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Ulrich Reinehr · Dormagen, DE
Hans Lenz
Alfred Nogaj · Dormagen, DE
Gunter Blankenstein

Key dates

Filing date	Jan 14, 1975
Grant date	Mar 22, 1977
Priority date	—
Expiry date	Jan 14, 1995

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/939
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

The invention relates to a process for the continuous uniform and penetrative dyeing with high fastnesses of slivers or filaments of acrylonitrile polymers which have been produced by a standard wet-spinning process wherein the slivers or filaments prior to dyeing are subjected to a combined washing, pressing and drying pretreatment.

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