Formazan reactive blue dyes, a process for their preparation and a process for dyeing cellulose fibers therewith
申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0021351A1
公开(公告)日:1981-01-07
A formazan reactive blue dye represented by a free acid of the formula I
wherein X1 and X2 are each a hydrogen atom, a methyl, methoxy or sulfonic acid group, m and I are each an integer of 0 or 1 and n is an integer of 0 to 2, provided that the sum of m, n and 1 is 2 or 3.
A Proces for their preparation.
This dye is usable for dyeing cellulose fibers in a brilliant blue color with good fastnesses, particularly, chlorine, light and perspiration-light fastnesses, as well as good white dischargeability.
The cellulose fiber dyed by this process.
一种由式 I 的游离酸代表的偶氮活性蓝色染料
其中 X1 和 X2 各为氢原子、甲基、甲氧基或磺酸基团,m 和 I 各为 0 或 1 的整数,n 为 0 至 2 的整数,条件是 m、n 和 1 之和为 2 或 3。
一种制备方法。
这种染料可用于纤维素纤维的染色,染成具有良好牢度(尤其是耐氯牢度、耐光牢度和耐汗渍牢度)的亮蓝色,并具有良好的放白性。
用这种工艺染色的纤维素纤维。