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:
Jul. 21, 1998
Filed:
Mar. 10, 1997
Applicant:
Inventors:
Assignee:
Hoechst Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07D / ; G03C / ; B41J / ; C09B / ;
U.S. Cl.
CPC ...
549 24 ; 430343 ; 347 88 ; 8650 ; 260D / ;
Abstract
The present invention relates to benzothioxanthene dyes of the formula I, ##STR1## in which R.sup.1 is SO.sub.3.sup..crclbar. M.sup..sym. or SO.sub.2 NR.sup.4 R.sup.5, R.sup.2 and R.sup.3 independently of one another are hydrogen, SO.sub.3.sup..crclbar. M.sup..sym. or SO.sub.2 NR.sup.4 R.sup.5 and X, Y, n, R.sup.4, R.sup.5 and M.sup..sym. are as defined in claim 1, to their preparation and to their use, especially in inks and recording liquids.