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US 5,160,495 AGranted
2-cyano-4,6-dimitro-phenyl monoazo dyestuffs
AssigneeCassella Aktiengesellschaft
InventorsUlrich Buhler, Reinhard Kuhn, Margareta Boos
Life of this patent
Estimating the term…
Abstract
Monoazo dyestuffs useful for dyeing and printing hydrophobic fibers have the formula ##STR1## in which R.sup.1 denotes alkyl having 1 to 3 carbon atoms, R.sup.2 and R.sup.3 independently of one another denote alkyl having 2 to 5 carbon atoms and R.sup.4 denotes methyl or ethyl.
Claims10
Monoazo dyestuff of the formula ##STR16## wherein R.sup.1 denotes alkyl having 1 to 3 carbon atoms;
- R.sup.2 and R.sup.3, independently of one another, each denote alkyl having 2 to 5 carbon atoms;
- and R.sup.4 denotes methyl or ethyl.
Dependencies are inferred from the claim text.