Patent · US Expired

.beta.-modification of 1-(2,4-dinitro-6-chloro-phenylazo)-2-propionylamino-4-N-ethylamino-5-(2- methoxy-ethoxy)benzene, its preparation and its use

US5037962A · kind A · utility

0Cited by

5References

1Claims

0Family size

Assignee

Cassella Aktiengesellschaft · DE

Inventors

Hubert Kruse · Kelkheim, DE
Ulrich Buhler · Alzenau, DE
Konrad Opitz · Liederbach, DE
Willi Steckelberg · Hofheim, DE

Key dates

Filing date	Aug 21, 1989
Grant date	Aug 6, 1991
Priority date	—
Expiry date	Aug 21, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B67/0029
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The .beta.-modification, which is stable under dyeing conditions, of the dyestuff of the formula ##STR1## is prepared by heating the .alpha.-modification, which is unstable under dyeing conditions, at temperatures of 60.degree. to 180.degree. C. and the .beta.-modification is useful in printing and dyeing fiber materials of cellulose esters, synthetic linear polyesters or mixed fabrics of the polyester fiber material with wool or viscose staple.

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