| abstract |
Al phthalocyanine reactive dyes of formula (I) are claimed, where a = 0-3; b = 0-2; c = 0.5=3; Pc is a phthalocyanine gp.; R<1> and R<2> are each H, (substd.) 1-6C alkyl, (substd.) phenyl or a fibre-reactive gp. with a sulphonyl gp.; or NR<1>R<2> is a satd. heterocyclic ring system; B is a N-contg. bridging gp., attached to the SO2 gp. through a N atom; Z is a fibre-reactive gp.; X is OH, OR<3>, Pc gp. attached by bridging gp. or anion; and R<3> is a (substd.) 1-6C alkyl or (substd.) phenyl. (I) are prepd. by (a) reacting Al phthalocyanine sulphonyl chlorides of formula (AlPc(X))(SO3H)p(SO2Cl)q (IV) with amines of formula H-B-Z and opt. amines of formula HNR<1>R<2>; (b) hydrolysing any SO2Cl gps. if necessary; and (c) condensing the resultant cpd. of formula (I; Z = H) with triazine, pyrimidine or quinoxaline reactive components of formula Z-Hal, with elimination of HHal. p = 0-3; q = 1-4; p + q = 2, 3 or 4; Hal is Cl, Br or F, with elimination of HHal. |