Preparation of Reactive Bright Blue Rare Earth Dyestuffs and Their Spectra Properties

Reactive bright blue rare earth dyestuffs were prepared by using reactive bright blue and lanthanum oxide,praseodymium oxide, neodymium oxide, samarium oxide, europium oxide, gadolinium oxide, dysprosium oxide, erbium oxide, lutetium oxide, yttrium oxide respectively for dyeing silk cloth.The degree of dyeing of reactive bright blue praseodymium and the degree of fixation of reactive bright blue gadolinium are the biggest, and 22.9% and 7 %are increased with that of reactive bright blue respectively.The spectra of reactive bright blue rare earth and reactive bright blue were studied by UV-VIS.In 200.00 ～ 800.00 nm, reactive bright blue has four absorption peaks, reactive bright blue rare earth has three absorption peaks; in 420.00 ～ 760.00 nm, reactive bright blue has two absorption peaks at 661.50 nm and 625.50 nm, respectively, and λmax is 661.50 nm; reactive bright blue rare earth has one absorption peak at 620.50, 618.00, 622.00, 623.00, 622.50, 619.50, 619.00, 621.00, 624.00, 620.00 nm adding La3+ ,Pr3+, Nd3+, Sm3+, Eu3+, Gd3+, Dy3+, Er3+, Lu3+, Y3+respectively.

活性翠蓝镨染料的制备及其光谱性能

以活性翠蓝和氧化镨为原料 ,制备了活性翠蓝镨染料。用该染料对真丝绸进行了染色 ,分别测定了活性翠蓝、活性翠蓝镨的紫外 可见光吸收光谱以及染色后真丝绸的红外光谱。在 2 0 0～ 80 0nm范围内 ,活性翠蓝有 4个吸收峰 ,最大吸收峰的波长为 2 5 9 0 0nm ,在可见光范围内活性翠蓝有 2个吸收峰 ,最大吸收峰的波长为 6 6 1 5 0nm ;活性翠蓝镨有 3个吸收峰 ,最大吸收峰的波长为 2 6 4 0 0nm ,在可见光范围内只有 1个吸收峰 ,最大吸收峰的波长为 6 18 0 0nm。活性翠蓝与镨离子是以配位键相结合 。

棉氨针织汗布活性翠蓝染色工艺的探讨

棉氨针织汗布活性翠蓝B-BGFN染色时易出现上染率低、色牢度差、匀染性不好等问题。文中采用不同处方对棉氨针织汗布进行前处理,并改变染色处方及条件进行活性翠蓝B-BGFN染色,探讨并分析各因素对染色效果的影响。结果表明,前处理和染色时螯合分散剂FS-316的加入,有效地改善了棉氨针织汗布的染色效果;选用合适的前处理处方和染色处方,在染色温度为80℃,染色时间为40 min,固色时间为60 min的条件下,能达到较好的染色效果。