芳伯胺染料的合成及其对蚕丝的Mannich法染色研究

Synthesis of Aromatic Primary Aniline Dye and Its Dyeing Behaviors on Silk Through Mannich Reaction

以对硝基苯胺为重氮组分,1-（4-磺酸苯基）-3-甲基-5-吡哇啉酮为偶合组分,通过重氮化、偶合、还原等化学反应合成了一只分子内含有芳伯胺基团的橙色染料,并通过紫外、红外、质谱和核磁等手段对最终产物进行了结构表征,证明其结构与设计相符.将合成的染料利用Mannich反应对蚕丝进行染色,结果发现与普通酸性染料蚕丝染色法相比,Mannich染色法获得的蚕丝织物皂洗后的色深明显高于酸性染料染色法,并且耐湿处理牢度较好,其中耐摩擦色牢度达到3级,耐水洗牢度达到4～5级,断裂强力损失低于5％.

An orange dye containing aromatic primary amine group was synthesized through diazotization,coupling and reduction reactions with paranitroaniline as heavy nitrogen component and1-(4-sulfophenyl)-3-methyl-5-pyrazolone as the coupling component.Besides,structural characterization was conducted for final product through UV,FTIR,mass spectrum and nuclear magnetism.It has been proven that the structure conforms to the design.The synthesized dye dyed silk through Mannich reaction.The results show that compared with common acid dyes,color depth of silk fabric gained through Mannich reaction is significantly higher than that of silk fabric dyed through acid dyes.Besides,wet processing fastness is good,where color fastness to rubbing reaches Level 3and washing color fastness reaches Level4-5.Breaking strength loss is less than 5%.