Patent Number: 6,310,187

Title: Reactive red dyes containing monochlorotriazine and acetoxyethyl sulfone groups

Abstract: The present invention relates to a bifunctional red reactive dye and more particularly, to the bifunctional red reactive dye with monochlorotriazine and acetoxyethylsulfone as reactive groups expressed by formula (I), wherein, M is alkaline metal atom, which provides excellent combination of properties in that 1) the introduction of aminophenyl-.beta.-acetoxyethylsulfone group to the dye may minimize the loss of dye, since its low solubility to water lessens the amount of the remaining solution during filtration, 2) an easier salting-out process requires a smaller amount of salt during the process so that the costs for the treatment of waste water may be significantly reduced, and 3) a better dyeing yield with enhanced substantivity and better brightness in color ##STR1##

Inventors: Oh; Sea Wha (Daejeon, KR), Kang; Myeong Nyeo (Daejeon, KR), Shin; Seung Rim (Daejeon, KR), Kim; Tae Kyung (Daejeon, KR), Song; Mi Kyoung (Daejeon, KR)

Assignee: Korea Research Institute of Chemical Technology

International Classification: C09B 62/44 (20060101); C09B 062/51 ()

Expiration Date: 10/30/2018