| It was choosen 1,5-dichloroanthraquinone as dye parent body and glycol, ethanolamine and 3-amino-1-propanol as nucleophiles . 1,5-di(hydroxyethoxyethoxyl)anthraquinone, 1,5-di(hydroxyethylamino)anthraquinonoe and 1,5-di(hydroxypropylamino)anthraquinone were prepared. Polymeric dyes were prepared via solution polycondensation.The conditions of synthesis of 1,5-di(hydroxyethoxyethoxyl)anthraquinone: m(1,5-dichloroanthraquinone): m(glycol)=1:16, reaction temperature 120℃, reaction time 10h. The crude product was recrystallied by ethanol, the yield was 71.9%, purity was 98.3%, and the melting point of product was 119.6-121.1℃. The conditions of synthesis of 1,5-di(hydroxyethylamino)anthraquinone: m(1,5-dichloroanthraquinone): m(ethanolamine)=1:6, ethanolamine: glycol(g: g)=1:10, reaction temperature 120℃, reaction time 10h. The crude product was recrystallied by DMF, the yield was 76.3%, purity was 99.6%, and the melting point of product was 275.1-276.1℃. The conditions of synthesis of 1,5-di(hydroxypropylanino)anthraquinone: m(1,5-dichloroanthraquinone): m(3-amino-1-propanol)=1:6, refluxing 10h. The crude product was recrystalled by DMF, the yield was 72.4%, purity was 98.3%, and the melting point of product was 227.8-228.6℃. These structure was characterized by HPLC-MS,NMR,IR and UV-vis.Polymeric dyes containing 1,5-di(hydroxyethoxyethoxyl)anthraquinone, 1,5-di(hydroxyethylamino)anthraquinone or 1,5-di(hydroxypropylanino)anthraquinone were prepared. It showed that ester group was existed in polymeric dye by IR. It is found that maximun absorption between monomeric dye and polymeric dye shifted little by UV-vis. The thermal decomposition of polymeric dye was higher than the thermal decomposition of monomeric dye by thermogravimetry. The resistant solvent extraction of polymeric dyes was improved. |
