Back to results
US 6,132,894 AGranted
1:2 Iron azo-dyestuff complexes
AssigneeClariant Finance (BVI) Limited
InventorsBansi Lal Kaul, Dominique Pflieger
Life of this patent
Estimating the term…
Abstract
A compound of formula (I) or a mixture thereof ##STR1## The compounds are useful as solvent dyestuffs and exhibit high solubility in alcoholic solvents, e.g. ethanol.
Claims6
A compound according to the formula (I) ##STR12## or a mixture thereof wherein
- R.sub.1 is hydrogen, ##STR13## R.sub.2 is hydrogen, alkyl, alkoxyalkyl, cycloalkyl or aryl and R.sub.3 is alkyl, alkoxyalkyl, cycloalkyl or aryl
- R.sub.4 is H or OH
- R.sub.5 is hydrogen, alkyl, alkoxyalkyl or cycloalkyl
- or R.sub.1 and R.sub.5 together with the ring to which they are attached form a naphthyl group,
- R.sub.6 is hydrogen or a group ##STR14## R.sub.7 is a protonated aliphatic or cycloaliphatic amine or piperidinium with the proviso that
- (i) when R.sub.1 and R.sub.5 together with the ring to which they are attached form a naphthyl group then R.sub.4 is hydrogen and R.sub.6 is hydrogen, and
- (ii) R.sub.4 is OH when R.sub.1 is hydrogen, ##STR15## and R.sub.5 is hydrogen, alkyl, alkoxyalkyl and cycloalkyl.
4 more elements
A process of forming a compound of the formula (I) or a mixture thereof
- wherein
- R.sub.1 is hydrogen, ##STR17## R.sub.2 and R.sub.3 independently of each other are hydrogen, alkyl, alkoxyalkyl, cycloalkyl and aryl
- R.sub.4 is H or OH
- R.sub.5 is hydrogen, alkyl, alkoxyalkyl and cycloalkyl
- R.sub.1 and R.sub.5 together with the ring to which they are attached form a naphthyl group,
- R.sub.6 is hydrogen or a group ##STR18## R.sub.7 is a protonated aliphatic or cycloaliphatic amine and with the proviso that
- (i) when R.sub.1 and R.sub.5 together with the ring to which they are attached form a naphthyl group then R.sub.4 is hydrogen and R.sub.6 is hydrogen and
- (ii) R.sub.4 is OH when R.sub.1 is hydrogen ##STR19## and R.sub.5 is hydrogen, alkyl, alkoxyalkyl and cycloalkyl comprising the steps of reacting the diazotised amine of formula (II) ##STR20## with a compound of formula (III), ##STR21## metallizing using an iron-donating compound and introducing the cation R.sub.7.sup.+.
5 more elements
A coated substrate comprising:
- a) a substrate, and
- b) a compound of the formula (I) ##STR22## or a mixture thereof wherein
- R.sub.1 is hydrogen, ##STR23## R.sub.2 and R.sub.3 independently of each other are hydrogen, alkyl, alkoxyalkyl, cycloalkyl or aryl
- R.sub.4 is H or OH
- R.sub.5 is hydrogen, alkyl, alkoxyalkyl or cycloalkyl
- R.sub.1 and R.sub.5 together with the ring to which they are attached form a naphthyl group,
- R.sub.6 is hydrogen or a group ##STR24## is a protonated aliphatic or cycloaphatic amine and with the proviso that (i) when R.sub.1 and R.sub.5 together with the ring to which they are attached form a naphthyl group then R.sub.4 is hydrogen and R.sub.6 is hydrogen and
- (ii) R.sub.4 is OH when R.sub.1 is hydrogen ##STR25## and R.sub.5 is hydrogen, alkyl, alkoxyalkyl and cycloalkyl.
5 more elements
A modified lacquer comprising:
- a) a lacquer, and
- b) a compound of the formula (I) ##STR26## or a mixture thereof wherein
- R.sub.1 is hydrogen, ##STR27## R.sub.2 and R.sub.3 independently of each other are hydrogen, alkyl, alkoxyalkyl, cycloalkyl or aryl
- R.sub.4 is H or OH
- R.sub.5 is hydrogen, alkyl, alkoxyalkyl or cycloalkyl, or
- R.sub.1 and R.sub.5 together with the ring to which they are attached form a naphthyl group,
- R.sub.6 is hydrogen or a group ##STR28## R is a protonated aliphatic or cycloaliphatic amine and with the proviso that
- (i) when R.sub.1 and R.sub.5 together with the ring to which they are attached form a naphthyl group then R.sub.4 is hydrogen and R.sub.6 is hydrogen and
- (ii) R.sub.4 is OH when R.sub.1 is hydrogen ##STR29## and R.sub.5 is hydrogen, alkyl, alkoxyalkyl and cycloalkyl.
6 more elements
Dependencies are inferred from the claim text.