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:
Aug. 09, 1977
Filed:
Feb. 09, 1976
Applicant:
Inventors:
Hansrudolf Schwander, Riehen, CH;
Urs Karlen, Magden, CH;
Assignee:
Ciba-Geigy Corporation, Ardsley, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ; C09B / ;
U.S. Cl.
CPC ...
260380 ; 260383 ;
Abstract
An anthraquinone dyestuff which is sparingly soluble in water of the formula wherein Y is amino, alkylated amino or hydroxyl, the ring A can be substituted by halogen, methyl, ethyl, methoxy, ethoxy, nitro or acylamino, Z is acyl or hydrogen, and one of R.sub.1 and R.sub.2 is hydrogen and the other is a substituted or unsubstituted lower alkyl, cycloalkyl, or aryl or a carboxy ester group. The dyestuffs dye polyester fibers in orange or red-violet shades with good fastness.