Patent · US Expired

Fluent polyazo dye preparations and method of dying leather or wool therewith

US5320647A · kind A · utility

3Cited by

15References

2Claims

0Family size

Assignee

BASF SE

Inventors

Georg Henning · Ludwigshafen, DE
Georg Zeidler · Schifferstadt, DE
Ortwin Schaffer · Ludwigshafen, DE

Key dates

Filing date	Aug 14, 1992
Grant date	Jun 14, 1994
Priority date	—
Expiry date	Aug 14, 2012

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S8/908
WIPO fieldTextile and paper machines
WIPO sectorMechanical engineering

Abstract

Fluent dye preparations useful for dyeing leather or wool contain PA1 a) at least 15% of the weight of the dye preparation of one or more polyazo dyes in salt form which have one or more hydroxysulfonyl and/or carboxyl groups and may be present in the form of a 1:1 or 1:2 metal complex, PA1 b) from 2 to 15% of the weight of the dye preparation of a surfactant, and PA1 c) water.

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