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:
Oct. 24, 1989
Filed:
Oct. 26, 1987
Rox Phaff, Rheinfelden, CH;
Davor Bedekovic, Biel-Benken, CH;
Ciba-Geigy Corporation, Ardsley, NY (US);
Abstract
Chromogenic phthalides and azaphthalides of the formula ##STR1## in which V.sub.1 and V.sub.2 are each, independently of the other, hydrogen, halogen, lower alkyl, lower alkoxy, (lower alkoxy)carbonyl or --NR.sub.1 R.sub.2, at least one of the radicals V.sub.1 and V.sub.2 being lower alkoxy or --NR.sub.1 R.sub.2, A is an unsubstituted or halogen-, cyano-, nitro-, (lower alkyl)-, (lower alkoxy)-, (lower alkyl)thio-, (lower alkyl)amino- or di(lower alkyl)amino-substituted benzene, naphthalene, pyridine, quinoline, pyrazine or quinoxaline ring, B is a substituted phenyl radical of the formula ##STR2## or a 3-indolyl of the formula ##STR3## Q is ##STR4## --S-- or --O--, R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are each, independently of the others, hydrogen, unsubstituted or halogen-, hydroxy-, cyano- or (lower alkoxy)-substituted alkyl, cycloalkyl or unsubstituted or ringsubstituted phenalkyl or phenyl, or the substituent pairs (R.sub.1 and R.sub.2) and (R.sub.3 and R.sub.4) are each, independently of each other, together with the nitrogen atom joining them, a five- or six-membered, heterocyclic radical, Y.sub.1 is hydrogen, lower alkyl, cycloalkyl, phenalkyl or phenyl, Y.sub.2 is hydrogen, lower alkyl or phenyl, Z.sub.1 and Z.sub.2 are each, hydrogen, unsubstituted or halogen-, hydroxyl-, cyano- or (lower alkoxy)-substituted alkyl acyl or unsubstituted or substituted benzyl, X is hydrogen, halogen, lower alkyl, C.sub.1 -C.sub.12 -alkoxy, C.sub.1 -C.sub.12 -acyloxy, benzyl, phenyl, benzyloxy, phenyloxy, halogen-, cyano-, (lower alkyl)- or (lower alkoxy)-substituted benzyl or benzyloxy, or the group --NT.sub.1 T.sub.2, T.sub.1 and T.sub.2 are each, independently of the other, hydrogen, lower alkyl, cycloalkyl, unsubstituted or substituted benzyl or acyl and T.sub.1 is also unsubstituted or substituted phenyl, and the benzene nucleus D is unsubstituted or substituted. These phthalides and azaphthalides are suitable in particular for use as color formers in pressure- or heat-sensitive recording materials and produce green, greenish blue, greyish blue, blue or violet-blue colors.