New reactive dyestuff cpds. for dyeing e.g. cotton or polyamide

摘要

New reactive dyestuffs (I) with 4-(5-chloro-6-fluoro- or 2,6-difluoro-pyrimidin -4-yl-amino)-alkyl-, -aryl- or aralkyl-amino)-6-chloro- or -fluoro-s-triazin-2-yl-amino gp(s). are of the formula (I), where D= an organic dyestuff gp.; R, R1 and R2= H or (substd.) 1-4C alkyl; A= a (substd.) aliphatic, aromatic or aromatic-aliphatic bridging gp.; X= Cl or F; Pym= a pyrimidinyl gp. of formula (IIA) or (IIB). n= 1 or 2. (I) are prepd. (claimed) by condensing an organic dyestuff of formula D-(NHR)1-2 (III) or its precursor, 2,4,6-trifluoro- or 2,4,6-trichloro-s-triazine, a diamine of formula R1HN-A-NHR2 (IV) and 4,6-difluoro-5-chloro- or 2,4,6-trifluoro-pyrimidine and, if necessary, converting the precursor to (I).