刚果红用亚硝酸钠重氮化后分别与2-胺基-8-萘酚-6-磺酸、对甲氧基苯胺偶合得到两种新型三偶氮染料DYE-R1和DYE-R2。它们分别与PVAL混和后,用流延法成膜制得彩色偏光材料。DYE-R1-PVAL膜和DYE-R2-PVAL膜在各自的最大吸收波长处所对应的偏光度分别为88.7%和90.8%,DYE-R1-PVAL膜在80℃、相对湿度为90%的条件下处理1000h后偏光度为88.2%。 Congo red with sodium nitrite after diazotization, respectively, and 2-amino-8-naphthol-6-sulfonic acid, p-methoxy aniline were coupled to obtain two new triazo dyes DYE-R1 and DYE-R2. After they were mixed with PVAL, respectively, the film was cast by casting to produce a color-polarizing material. The corresponding polarization degrees of the DYE-R1-PVAL film and the DYE-R2-PVAL film at their respective maximum absorption wavelengths were 88.7% and 90.8%, respectively. The DYE-R1-PVAL film had a relative humidity of 90% at 80 ° C After 1000h treatment, the degree of polarization was 88.2%.