With the object of preparing a cellulose ether containing diazotizable amino groups, seven different forms of cellulose, or cellulose derivatives, were treated with 10 different reagents under a variety of conditions. Reasons why only one reagent under one set of conditions gave a product with a substantial degree of substitution (0.35) and with satisfactory physical properties are presented. This resulting ether, the ω-(P-aminoacetophenone) ether of cellulose, was prepared by the reaction between ω-chloro-P-aminoacetophenone and ethanol-washed soda-cellulose (from wood pulp, cotton, paper, or rayon). It can be (a) diazotized and coupled with any of the usual reagents to yield cellulose-azo colors, (b) xanthated, before or after coupling, and spun as rayon filament; if uncoupled at this point it can be diazotized and coupled, (c) dyed directly with acid dyes, (d) rendered organo-soluble by nitration, and (e) carboxymethylated after coupling to yield colored, water-soluble derivatives. It is insoluble in the usual cellulose reagents, and is as stable to acid and alkaline hydrolysis as cellulose.
为了制备含有重氮化
氨基团的
纤维素醚,使用了七种不同形式的
纤维素或
纤维素衍
生物,并在各种条件下用十种不同的试剂进行处理。介绍了为什么只有一种试剂在一组条件下产生了具有实质取代度(0.35)和令人满意的物理性质的产物的原因。该结果醚,即
纤维素的ω-(P-
氨基
苯乙酮)醚,是通过ω-
氯-P-
氨基
苯乙酮和
乙醇洗涤的苏打
纤维素(来自木浆,棉花,纸张或人造丝)的反应制备的。它可以(a)重氮化并与任何通常的试剂偶联以产生
纤维素偶氮
颜料,(b)在偶联之前或之后进行黄原化,并旋转成人造丝长丝;如果在此时未偶联,则可以重氮化和偶联,(c)直接用
酸性染料染色,(d)通过硝化使其有机溶解性,(e)在偶联后羧甲基化以产生有色的
水溶性衍
生物。它在通常的
纤维素试剂中不溶,在酸性和碱性
水解中与
纤维素一样稳定。