Patent · US Active

Azo dyes

US8734534B2 · kind B2 · utility

0Cited by

9References

16Claims

0Family size

Assignee

KEMIRA OYJ · FI

Inventors

Helmut-Martin Meier · Ratingen, DE
Christof Heide · Bensberg, DE
Klaus-Günter Strumpf · Leverkusen, DE
Thomas Hübbe · Cologne, DE

Key dates

Filing date	Nov 29, 2011
Grant date	May 27, 2014
Priority date	—
Expiry date	Nov 29, 2031

Classification

Technology area (CPC D)Textiles; Paper
CPC primaryD21H21/28
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The present invention relates to new azo dyes, a process for their preparation, and their use for dyeing or printing fibrous materials, to produce materials with brownish shades.

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