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US 5,334,734 AGranted
Vat dyes
AssigneeBASF SE
InventorsMatthias Niedenbrueck, Manfred Patsch
Life of this patent
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Abstract
Vat dyes for dyeing and printing cellulose material have the formula ##STR1## where P=pyranthrone structure, A=1,4-or 1,5-anthraquinonyl, V=a violanthronyl or isoviol-anthronyl radical which may carry up to 2 chlorine or bromine atoms as substitutents, R=hydrogen, the acyl radical of an aliphatic C.sub.1 -C.sub.6 -carboxylic acid or the acyl or sulfonyl radical of an aromatic carboxylic or sulfonic acid, Hal=chlorine or bromine, m=from 0 to 3, n=from 1 to 4, and p=from 0 to 3, with the proviso that the sum m+n+p is not greater than 4.
Claims3
Vat dyes of the general formula (I) ##STR8## where P is pyranthrone,
- A is 1,4- or 1,5-anthraquinonylene,
- V is a violanthronyl or isoviolanthronyl radical which may carry up to 2 chlorine or bromine atoms as substituents,
- R is hydrogen, the acyl radical of an aliphatic C.sub.1 -C.sub.6 -carboxylic acid or the acyl or sulfonyl radical of an aromatic carboxylic or sulfonic acid,
- Hal is chlorine or bromine,
- m is from 0 to 3,
- n is from 1 to 4, and
- p is from 0 to 3,
- with the proviso that the sum m+n+p is not greater than 4.
5 more elements
Dependencies are inferred from the claim text.