The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 03, 1991
Filed:
Aug. 24, 1989
Applicant:
Inventors:
Ludwig Schlafer, Kelkheim, DE;
Werner H Russ, Hofheim am Taunus, DE;
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C09B / ; D06P / ; D06P / ; D06P / ;
U.S. Cl.
CPC ...
534642 ; 534593 ; 534641 ; 534887 ;
Abstract
Water-soluble azo compounds which have fiber-reactive dyestuff properties and dye materials containing carboxamide and/or hydroxyl groups, such as fiber materials, in particular cellulose fiber materials, in strong, fast, predominantly bluish-tinged red to orange shades; they correspond to the general formula (1) ##STR1## in which: M is a hydrogen atom or an alkali metal;