Process for the manufacture of anthraquinone compounds
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Apr 7, 1987
Issued Date -
N/A
app pub date -
Sep 19, 1984
filing date -
Jul 7, 1976
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for the manufacture of quaternized diaminoanthraquinones by reacting alpha-nitro-anthraquinone with an amine of the formula ##STR1## to give 1-aminoanthraquinone (B), halogenating, preferably brominating the compound (B) to give 1-amino-4-halogeno- or 1-amino-2,4-dihalogeno-anthraquinone (C), condensing the compound (C) with a diamine of the formula ##STR2## or with an amine of the formula HNR.sub.3 R.sub.7 to give 1,4-diaminoanthraquinone (D) and subsequently quaternizing compound (D) to give the corresponding quaternized anthraquinone compound (E) which process comprises carrying out the condensation of compound (C) with the amine to form compound (D) and subsequent quaternization steps in one single operation without isolation of the intermediate (D).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully