Invention Grant
- Patent Title: Production of auramine salts and auramine salt solutions
- Patent Title (中): 制备芳香胺盐和芳香胺盐溶液
-
Application No.: US37877573Application Date: 1973-07-12
-
Publication No.: US3927095APublication Date: 1975-12-16
- Inventor: EISERT MANFRED , SCHMEIDL KARL
- Applicant: BASF AG
- Assignee: Basf Ag
- Current Assignee: Basf Ag
- Priority: DE2234836 1972-07-15; DE2258344 1972-11-29; DE2261064 1972-12-14
- Main IPC: C09B11/00
- IPC: C09B11/00 ; C09B11/02 ; C09B55/00 ; C09B67/26 ; C09B69/06 ; C07C119/00
Abstract:
Production of auramine salts and auramine salt solutions from 4,4''-bisdimethylaminodiphenylmethane or 4,4''bisdiethylaminodiphenylmethane in the presence of sulfur and urea by reaction of the components, with or without the addition of an ammonium salt, taking up the auramine base in a solvent which is not miscible with water and extracting the auramine base by reaction with an acid in water, formamide or glycol with the formation of a salt. The auramine salts and auramine salt solutions obtained are outstandingly suitable for the production of dye liquors.
Information query