Abstract: A process for thermal benzylic bromination of a wide variety of benzylic compounds is described. Bromine is used as the bromination agent. Moderate temperatures are employed and the process can be used to produce in relatively pure form either mono- or dibrominated benzylic bromination products.

Abstract: A mixture comprised of about 60-85% of 2,4-toluenediamine (2,4-TDA) and about 15-40% of 2,6-toluenediamine (2,6-TDA) is melted, the temperature of the mixture is lowered to a 2,4-TDA nucleation temperature, and the temperature of the mixture is gradually reduced from the nucleation temperature to about 65 to about 70° C. The resultant mixture is in the form of a solids phase enriched in 2,4-TDA, and a novel and useful liquid phase enriched in 2,6-TDA. These phases are separated. Preferably the solids are further purified by “sweating” them and removing the sweated liquid impurities. The sweated liquid can be recycled together with another charge of a mixture comprised of 2,4-TDA and 2,6-TDA. 2,4-TDA can be produced with a purity of 96-99%.

Abstract: A process of recovering chlorine from a stream of hydrogen chloride comprising the steps of exothermically reacting a stream of hydrogen chloride and oxygen with a fluidized bed of a carrier catalyst containing cupric oxide and cupric chloride in a reaction zone within a chlorinator reactor at temperatures between 150.degree. and 220.degree. C. to convert part of the cupric oxide to cupric chloride and cupric hydroxychloride, thereby essentially eliminating the hydrogen chloride to produce a product stream including chlorine, residual oxygen, inerts and water, which is removed from the chlorinator reactor; passing the resulting carrier catalyst containing cupric chloride, cupric hydroxychloride, and residual cupric oxide from the chlorinator reactor to the combination oxidation reactor to form a bed which is operated at temperatures between 300.degree. and 400.degree. C.