Patent · US Expired

Dyeing process using quaternary ammonium salt as retarder

US4052159A · kind A · utility

76Cited by

1References

6Claims

0Family size

Assignee

BASF SE

Inventors

Ernst Fuerst
Jozsef Gerendas
Rudolf Rokohl
Rolf Fikentscher · Ludwigshafen, DE
Herbert Helfert · Bischofswerda, DE

Key dates

Filing date	Jul 6, 1976
Grant date	Oct 4, 1977
Priority date	—
Expiry date	Jul 6, 1996

Classification

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

Abstract

Special quaternary ammonium salts derived from triaminoalkyl derivatives of hexahydrotriazine for use as retarders in the dyeing of anionic polyacrylonitrile fibers with basic dyes.

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