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:
Jun. 04, 1985
Filed:
Mar. 23, 1983
Applicant:
Inventors:
Herbert Armbrust, Gruenstadt, DE;
Johannes P Dix, Neuhofen, DE;
Guenter Hansen, Ludwigshafen, DE;
Georg Zeidler, Dannstadt-Schauernheim, DE;
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Primary Examiner:
Int. Cl.
CPC ...
C09B / ; C09B / ; C09B / ; C09B / ;
U.S. Cl.
CPC ...
8639 ; 534573 ; 534649 ; 534650 ; 534651 ; 534677 ; 534688 ;
Abstract
Compounds of the general formula I ##STR1## where R is hydroxyl or unsubstituted or substituted amino, R.sup.1 is hydrogen or C.sub.1 -C.sub.12 -alkyl, X.sup.1 and Y.sup.1 independently of one another are each a carboxylic acid ester or ether group and X.sup.2 and Y.sup.2 independently of one another are each hydrogen, nitro or chlorine, are very useful for coloring petroleum products, solvents and engine fuel additives.