NH4+ Or group IA metal 2,7-dimethyl-1,2,3-tetrahydro-β-hydroxy-1-quinolinepropanesulfonates
Abstract
Abstract 2-Hydroxy-3-halo-1-propanesulfonates are reacted with certain arylamines, preferably in the presence of a base such as KOH or NaOH in one or more of ethylene glycol, propylene glycol, 2-ethoxyethanol and the like to give 2-hydroxy-3-(arylamino)-1-propanesulfonates useful as couplers for acid dyes for polyamide fibers. The present coupler products which are derivatives of aniline, tetrahydroquinoline, and benzomorpholine, have the general formulae ##STR1## wherein the rings may be substituted with a wide variety of substituents known to the dye art; M is NH 4 + or a group IA metal, preferably Na + , or K + ; and R 3 is hydrogen or a group such as alkyl, cycloalkyl and aryl, each of which may be substituted.
Inventors
- 👤 John A. Hyatt
- 👤 Clarence A. Coates, Jr.
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
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