DYEING OF COTTON YARN 染色棉纱 WITH NAPTHOLS 与napthols

JAGSON offers 17 napthols which in combination with bases can give a very large number of shades. jagson提供17 napthols ，其中在结合基地，可以提供一个非常大的数目色调。 The spectrum of shades available is particularly rich in yellow, orange, red, maroon, brown, blue and black.频谱的色调可用，尤其是丰富，黄色，橙色，红色，深红色，棕色，蓝色和黑色。 The dyeing possess very good fastness to light, soda boil and chlorine.染色具有很好的牢度轻，苏打水煮沸和氯气。

These napthols can also be produced on viscose and jute and by certain modifications in the dyeing recipe on silk, wool, nylon and polyester fibers.这些napthols也可以产生对粘胶和黄麻和由某些修改，在染色方对丝绸，羊毛，尼龙和聚酯纤维。

Napthols are first applied to cotton in solution form. napthols首先是适用于棉花在解决方案的形式。 They form insoluble pigments on the fibre when coupled with diazo solution of amino compounds known as "fast bases" in dyestuff trade.他们形成不溶性颜料对纤维时，再加上重氮解决氨基酸化合物，被称为“快速基地”在染料贸易。 napthols can be applied by several methods such as tub-dip, open beck, jigger, padding, circulating liquor ect. napthols可以适用的几种方法，如浴缸浸，开放贝克，跳汰机，填充，循环酒等。 The dyeing of cotton, with napthols involves two separate operations :-染色的棉，与napthols涉及两个不同的行动： -

•  Impregnation of material with napthol solution. •浸渍材料与napthol的解决办法。

•  Developing the impregnated material, with diazotised fast bases or Fast Salt solutions, Dyeing is followed by soaping aftertreatment, to develop true shade, to remove excess color pigment and to get normal fastness properties. •发展浸渍材料，与diazotised快速基地或快速盐溶液，染色其次是皂洗后处理，要发展真正的遮荫，以消除过剩的彩色颜料和获得正常的牢度性能。

PROPERTIES 性能

NAPTHOLS napthols

•  napthols are available in micropulverised form. • napthols可在micropulverised形式。

•  These dyes are water insolubles which contain simple water soluble diluents. •这些染料是水不溶物，其中包含简单的水溶性稀释剂。

•  The nature of solutions of napthols during application is highly alkaline having an approx. •性质的解决方案的napthols期间的应用是高度碱性，具有约。 pH of 12-14. pH值为12月14日。