Process for the preparation of schiff's bases by the...

Details Process for the preparation of schiff's bases by the... Process for the preparation of schiff's bases by the...

B - Operations, Transporting

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260/592.7

B01J 27/18 (2006.01) B01J 20/10 (2006.01) B01J 21/02 (2006.01)

Patent

CA 1137513

Process for the preparation of Schiff's bases by the reaction of aromatic amines with ketones ABSTRACT OF THE DISCLOSURE Schiff's bases of the formula Image are obtained by reacting an amine H2N-R3 with a ketone Image in presence of calcium hydrogen phos- phate, apatite, aluminum oxide, aluminium hydroxide and/or Fuller's Earth and subsequent removing the water by azeotronic distillation. The products are intermediates for the preparation of phenylene diamines which may be used as age resis- tos for rubber. Le A 19 395

343766

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