Back to results
US 4,122,079 AGranted
Reactive azo dyestuffs from diazotized sulfo-amino naphthalenes and diaminosulfobenzenes
AssigneeBayer Aktiengesellschaft
InventorKarl-Heinz Schundehutte
Life of this patent
Estimating the term…
Abstract
Reactive dyestuffs of the formula: ##STR1## wherein R is H, alkyl or aryl, A is a reactive group m is 2 or 3 X is hydrogen, halogen, nitro or triazolyl which are useful for dyeing or printing of cellulose and NH containing materials.
Claims23
A reactive azo dyestuff of the formula ##STR7## wherein X stands for hydrogen, halogen, nitro, monosulfonaphthtriazolyl or disulfonaphth-triazolyl
- m stands for the number 2 or 3;
- A is a group adapted to react with the OH groups of cellulose with the formation of covalent bonds,
- wherein A is bonded to ##STR8## via a carbon atom of the group A;
- and R stands for hydrogen or C.sub.1-3 alkyl.
1 more element
Dependencies are inferred from the claim text.