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. 17, 1982
Filed:
Jan. 29, 1981
Hans Baumann, Wachenheim, DE;
Andreas Oberlinner, Ludwigshafen, DE;
BASF Aktiengesellschaft, , DE;
Abstract
Dye intermediates of the formula ##STR1## where R.sup.1 is hydrogen, alkyl of 1 to 12 carbon atoms, phenyl which is unsubstituted or substituted by alkyl of 1 to 4 carbon atoms, methoxy, ethoxy, chlorine or bromine, or phenylalkyl of 7 to 10 carbon atoms, R.sup.2 is hydrogen or R.sup.1 and R.sup.2 together are dimethylene, trimethylene or tetramethylene, which are unsubstituted or substituted by alkyl of 1 to 12 carbon atoms, R.sup.3 and R.sup.5 are hydrogen, alkyl of 1 to 12 carbon atoms, cyano-, chlorine-, methoxy- or ethoxy-substituted alkyl of 2 to 4 carbon atoms, cycloalkyl of 5 to 7 carbon atoms, phenylalkyl of 7 to 10 carbon atoms or trimethylene which is unsubstituted or substituted by 1 to 3 methyl and is bonded to the carbon atom in the 6-position or 6'-position of the benzene ring, R.sup.4 and R.sup.6 are alkyl of 1 to 12 carbon atoms, cyano-, chlorine-, methoxy- or ethoxy-substituted alkyl of 2 to 4 carbon atoms, phenylalkyl of 7 to 10 carbon atoms, phenyl which is unsubstituted or substituted by alkyl of 1 to 4 carbon atoms, chlorine or bromine, or trimethylene bonded to the carbon atom in the 8-position or 8'-position of the benzene ring, or one or both of the groups ##STR2## are a pyrrolidine, piperidine, morpholine, thiomorpholine, N'-alkylpiperazine (alkyl being of 1 to 4 carbon atoms) or isoindoline radical, and the substituents R.sup.3, R.sup.4, R.sup.5 and R may be identical or different and the rings A and A' may be substituted by alkyl of 1 to 3 carbon atoms. The dye intermediates give deep bluish-green to green colorations with electron-attracting substances and may be used for the manufacture of pressure-sensitive recording materials.