Patent · US Expired

Production of level dyeings on acrylonitrile polymer fibers with basic dyes

US3945794A · kind A · utility

3Cited by

2References

5Claims

0Family size

Assignee

BASF SE

Inventors

Rudolf Rokohl
Rolf Fikentscher · Ludwigshafen, DE
Herbert Helfert · Bischofswerda, DE

Key dates

Filing date	Feb 19, 1974
Grant date	Mar 23, 1976
Priority date	—
Expiry date	Feb 19, 1994

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/927
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Acrylonitrile polymer fibers are dyed level shades with basic dyes using as leveling agent a quaternary ammonium salt containing two or three benzyl groups as nitrogen ligands.

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