Abstract:
A process for the recovery of 1-nitroanthraquinone in a purified state from a nitroanthraquinone mixture containing it by treatment with a base in the presence of an initiator such as nitrite, halide, thiocyanate, alcoholate or phenolate ions in an organic solvent. A 1-nitroanthraquinone is obtained which is essentially pure or contains only small quantities of isomers and dinitroanthraquinones.
Abstract:
Apparatus for the continuous treatment and processing of solid and/or liquid materials and consisting essentially of a rotatable cylindrical processing chamber having, in its interior, a rotary element which rotates at various angular velocities either freely or under drive.
Abstract:
Continuous manufacture of propylene oxide by turbulent jet mixing of propylene chlorohydrin solution with aqueous alkali, mixing with steam to produce a two-phase mixture and a special working-up process following turbulent passage through a reaction zone with a short residence time. Propylene oxide is obtained in high yield and high space-time yield.