Disazo dyes, and copper complexes thereof, for dyeing paper

Details Disazo dyes, and copper complexes thereof, for dyeing paper Disazo dyes, and copper complexes thereof, for dyeing paper

2006-07-18

2006-07-18

Powers, Fiona T. (Department: 1626)

Organic compounds -- part of the class 532-570 series

Organic compounds

Azoxy

C534S689000, C534S797000, C534S810000, C534S818000, C534S823000, C534S824000, C534S828000, C008S527000, C008S681000, C008S919000

Reexamination Certificate

active

07078497

ABSTRACT:
The dyes of formula (1) according to claim1and the copper complexes of dyes of formula (2) according to claim9or the mixtures of mono-copper complex with the bis-copper complex are excellently suitable for dyeing paper with good light-fastness properties.

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