Phthalocyanine and use of phthalocyanine as a marking agent

US6340745B1 · kind B1 · utility

Assignee

• BASF SE

Inventors

• Frank Meyer · Mannheim, DE
• Christos Vamvakaris · Kallstadt, DE
• Karin H. Beck · Ludwigshafen, DE
• Gerhard Wagenblast · Wachenheim, DE
• Bernhard Albert · Monsheim, DE

Key dates

• Filing date: Nov 19, 1999
• Grant date: Jan 22, 2002
• Expiry date: Nov 19, 2019

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09B47/0676
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Phthalocyanines of the formula whereMe is twice hydrogen, twice lithium, magnesium, zinc, copper, nickel, VO, TiO, AlCl, AlOH, AlOCOCH3, AlOCOCF3, SiCl2 or Si(OH)2,at least four of the radicals R1 to R16 are each independently of the others a five- or six-membered saturated nitrogen-containing heterocyclic radical which is bonded to the phthalocyanine structure via a ring nitrogen atom and which can additionally contain further hetero atoms, andany remaining radicals R1 to R16 are each hydrogen, halogen, hydroxysulfonyl or C1-C4-dialkylsulfamoyl,subject to the proviso that tetrakispiperidinylphthalocyanine shall be excluded,and heterocyclyl-substituted phthalocyanines are useful for marking liquids, in particular mineral oils.