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US 5,489,330 AGranted
Copper phthalocyanine liquid finished preparation
AssigneeBayer Aktiengesellschaft
InventorKlaus Wunderlich
Life of this patent
Estimating the term…
Abstract
The new aqueous finished preparations of copper phthalocyanine dyestuffs comprising a dyestuff of the formula ##STR1## where CuPc, A, R.sup.1, R.sup.2, x and y have the meaning given in the description, are storage-stable and are outstandingly suitable for dyeing and printing cellulose-containing materials.
Claims12
A stable concentrated aqueous dyestuff solution which comprises one or more copper phthalocyanine compounds which, in the form of the free acid, correspond to the formula ##STR12## wherein CuPc represents a copper phthalocyanine radical,
- A represents substituted or unsubstituted, straight-chain or branched C.sub.2 -C.sub.6 -alkylene,
- R.sup.1 and R.sup.2 independently of one another represent hydrogen, substituted or unsubstituted, straight-chain or branched C.sub.1 -C.sub.6 -alkyl or substituted or unsubstituted, straight-chain or branched C.sub.1 -C.sub.6 -hydroxyalkyl, with the proviso that at least one radical R.sup.1 or R.sup.2 represents substituted or unsubstituted, straight-chain or branched C.sub.1 -C.sub.6 -hydroxyalkyl,
- x represents 1 to 3.5,
- y represents 0.5 to 3, and the sum of x and y is 2.5 to 4,
- and has a pH of 8 to 13.
2 more elements
Dependencies are inferred from the claim text.