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US 5,496,378 AGranted
Imidazolymethylated copper phthalocyanine dyes
AssigneeBASF SE
InventorsHeidi Hengelsberg, Manfred Ruske, Udo Mayer
Life of this patent
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Abstract
Basic dyes of the formula ##STR1## where n is from 1 to 3, CuPc is a copper phthalocyanine radical, R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sup.2 is C.sub.1 -C.sub.4 -alkyl, R.sup.3 is hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sup.4 is C.sub.1 -C.sub.4 -alkyl and An.sup..crclbar. is the equivalent of an anion, with the proviso that R.sup.1 and R.sup.3 are not both hydrogen, are useful for dyeing or printing polymeric material.
Claims12
Basic dyes of the formula I ##STR10## where n is from 1 to 3,
- CuPc is a copper phthalocyanine radical,
- R.sup.1 is hydrogen or C.sub.1 -C.sub.4 -alkyl,
- R.sup.2 is C.sub.1 -C.sub.4 -alkyl,
- R.sup.3 is hydrogen or C.sub.1 -C.sub.4 -alkyl,
- R.sup.4 is C.sub.1 -C.sub.4 -alkyl, and
- An.sup..crclbar. is an anion,
- with the proviso that R.sup.1 and R.sup.3 are not both hydrogen.
4 more elements
Dependencies are inferred from the claim text.