Patent · US Expired

Basic dyes based on amides of J-acid (1-hydroxy-6-aminonaphthalene-3-sulfonic acid) and amides of J-acid

US5750661A · kind A · utility

6Cited by

7References

6Claims

0Family size

Assignee

BASF SE

Inventors

Ulrike Schloesser · Mannheim, DE
Udo Mayer · Bischofswerda, DE

Key dates

Filing date	Aug 30, 1996
Grant date	May 12, 1998
Priority date	—
Expiry date	Aug 30, 2016

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B44/02
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

Dyes of the formula ##STR1## where the ring A may be benzofused and R.sup.1 -R.sup.6 have the meaning defined in the specification, with the proviso that at least one quaternizable or quaternary group is present in the molecule; use of said dyes for dyeing or printing polymeric material, and novel amides of J-acid.

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