| 摘要 |
This invention relates to very specific oxyalkylene-substituted m-amidoaniline compounds as intermediates for the production of poly(oxyalkylene)-substituted diazo (or other type) colorants. Such an inventive intermediate compound is produced in a single step by reacting an oxyalkylene oxide or alkoxy oxyalkylester having at least three carbon atoms (branched or unbranched), glycidol, or a glycidyl group directly with m-acetoamidoaniline (as a preferred example) at a relatively low temperature. Propylene oxide is the preferred compound. The propylene oxide selectively reacts with the amine group on the base compound without propoxylating the amido group. Such a specific method thus does not require extra time- and cost-consuming steps of protecting the amido nitrogen from attack. After production, this intermediate may be reacted with, for example, a diazotized aromatic amine to ultimately form a diazo colorant. The resultant oxypropylene groups may subsequently be reacted with other compounds, such as anhydrides, isocyanates, esters, and the like, to produce any number of different colorants.
|
