Back to results
US 4,652,632 AGranted
Naphtholazo benzoylalkylene amines and salts thereof as dyes for acid-modified fibers, leather and paper
AssigneeBASF SE
InventorHorst Colberg
Life of this patent
Estimating the term…
Abstract
Naphtholazo benzoylalkylene amines and salts thereof which are useful as dyes for acid-modified fibers, leather and paper, and which are represented by the formula ##STR1## wherein n is 0 or 1, A is an anion, R is C.sub.2 - to C.sub.4 -alkylene R.sup.1 and R.sup.2 independently of one another are C.sub.1 - to C.sub.4 -alkyl, methoxyethyl, cyclohexyl, and R.sup.1 and R.sup.2 together are ##STR2## and R.sup.3 is methyl, ethyl or hydroxyethyl.
Claims3
A compound of the formula:
- ##STR66## where n is 0 or 1,
- A is an anion,
- R is C.sub.2 - to C.sub.4 -alkylene
- R.sup.1 and R.sup.2 independently of one another are C.sub.1 - to C.sub.4 -alkyl, methoxyethyl, cyclohexyl, and R.sup.1 and R.sup.2 together are ##STR67## and R.sup.3 is methyl, ethyl or hydroxyethyl.
1 more element
Dependencies are inferred from the claim text.