发明授权
US3927095A Production of auramine salts and auramine salt solutions 失效
制备芳香胺盐和芳香胺盐溶液

Production of auramine salts and auramine salt solutions
摘要:
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.
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