Process for the manufacture of anthraquinone dyestuff mixtures

Abstract From the Canadian patent

Abstract of the Disclosure, A process for the manufacture of anthraquinone dyestuff mixtures by brominating one mol of a diphenyl ether of the formula, or of a mixture of such compounds wherein R1 denotes a, hydrogen atom or a phenyl or phenoxy group with a quan-, tity of bromine between 1 and 2 mols if R1 denotes a hydro-, gen atom, or with a quantity of bromine between 0.9 and 2 mols, if R1 denotes a phenyl or phenoxy group, and reacting the resulting bromination product with a molar quantity, corresponding to the degree of bromination, of a monoaminoanthraquinone or a mixture of monoaminoanthraquinones, which obtained anthraquinone dyestuff mixtures are useful for deing thermoplastics …