IR-absorbing phthalocyanines

US5783694A · kind A · utility

Assignee

• BASF SE

Inventors

• Helmut Hagen · Bischofswerda, DE
• Bernhard Albert · Monsheim, DE

Key dates

• Filing date: Mar 24, 1997
• Grant date: Jul 21, 1998
• Expiry date: Mar 24, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B47/22
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the general formula I ##STR1## where the A radicals are, independently of one another, ##STR2## where the rings B and C can also, independently of one another, be substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, nitro, hydroxysulfonyl, benzoyl or a fused-on benzo ring, PA2 R is hydrogen or methyl, and the two hydrogen atoms on the nitrogens Can be replaced by copper, nickel, vanadyl, magnesium, AlCl or zinc, PA1 are suitable as IR-absorbers.