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:
Feb. 16, 1982
Filed:
Dec. 05, 1974
Georg Zeidler, Limburgerhof, DE;
Johannes Dehnert, Ludwigshafen, DE;
Guenter Hansen, Ludwigshafen, DE;
Guenther Riedel, Heidelberg-Wieblingen, DE;
BASF Aktiengesellschaft, , DE;
Abstract
Monoazo and disazo dyes having an unsubstituted or substituted aniline or p-aminoazobenzene as diazo component and an N-substituted .beta.-naphthylamine of six to eighteen carbon atoms in the N-substituent as coupling component. Preferred diazo components are phenyl, tolyl, phenylazophenyl and tolylazotolyl, and preferred coupling components are provided by .beta.-naphthylamine which is N-monosubstituted by n-hexyl, n-octyl, .beta.-ethylhexyl, 3,5,5-trimethylhexyl, tridecyl, .beta.-ethylhexoxypropyl, cyclohexyl, benzyl or phenylethyl. The dyes are eminently suitable for the coloring of for example mineral oils, gasoline, fats and waxes because of their excellent solubilities.