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US 7,456,316 B2Granted
Anthraquinone dyes
AssigneeHuntsman International LLC
InventorsUrs Lauk, Patric Nowack
Life of this patent
Estimating the term…
Abstract
The present invention relates to a compound of formula (I) wherein R1 is a radical of formula (II) R2 is —NH2 or a radical of formula (II), R3 and R4 are each independently of the other hydrogen, hydroxy, —NH2 or a radical of formula (II), R5 is 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, R4 and R5 is 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.
Claims5
A compound of formula I
- wherein R1 is a radical of formula II
- R2 is —NH2 or a radical of formula II,
- R3 and R4 are each independently of the other hydrogen, hydroxy, —NH2 or a radical of formula II,
- R5 is hydrogen, halogen or —X—(CH2)n—Y,
- wherein X is a direct bond, Y is —OH or —OSO3H and n is a number 2,
- with the proviso that at least one of the radicals R3, R4 and R5 is not hydrogen.
3 more elements
Dependencies are inferred from the claim text.