Anthraquinone dyes

Details Anthraquinone dyes Anthraquinone dyes

2003-03-13

2008-11-25

Saeed, Kamal A (Department: 1626)

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

Organic compounds

Amino nitrogen containing

Reexamination Certificate

active

07456316

ABSTRACT:
The present invention relates to a compound of formula (I) wherein R1is a radical of formula (II) R2is —NH2or a radical of formula (II), R3and R4are each independently of the other hydrogen, hydroxy, —NH2or a radical of formula (II), R5is hydrogen, halogen or —X—(CH2)n—Y, wherein X is a direct bond, —O— or —S—, Y is —OH or —OSO3H and n is a number from 0 to 6, with the proviso that at least one of the radicals R3, R4and R5is not hydrogen, to a process for the preparation thereof and to the use thereof in a method of producing mass-coloured plastics or polymeric colour particles.

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