Patent · US Expired

Process for the production of filaments and fibres from acrylonitrile polymers

US4650624A · kind A · utility

3Cited by

3References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Ulrich Reinehr · Dormagen, DE
Toni Herbertz · Dormagen, DE

Key dates

Filing date	May 3, 1985
Grant date	Mar 17, 1987
Priority date	—
Expiry date	May 3, 2005

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD01F6/18
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Damage to the natural tone of acrylic fibres, produced according to a continuous dry spinning process, can be avoided if from 0.025 to 0.2% by weight of ethylene diamine tetra-acetic acid, based on the fibrous solids material, is added to the spinning solution.

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