Abstract: This invention relates to a process for separating methoxyisopropylamine and particularly to an improvement in the process for the recovery of methoxyisopropylamine from the reaction of methoxyisopropanol with ammonia under amination conditions. In this process water is produced as a byproduct and in the separation process an azeotrope is formed which comprises about 14% water and 86% methoxyisopropylamine at atmospheric pressure. The process for enhancing separation of the azeotrope comprises contacting the azeotrope of methoxyisopropylamine and water with diisopropylamine in sufficient amount to form the azeotrope of water and diisopropylamine and separating the azeotrope from the other materials in a distillation column. The overheads in this column is charged to a decanter where water is removed as a bottoms phase and the diisopropylamine as the upper phase and returned as reflux to the distillation volumn.

Abstract: A process for the recovery of methoxyisopropylamine from the reaction of methoxyisopropanol and ammonia under amination conditions. Water is produced as a byproduct and in the distillation separation an azeotrope is formed which includes about 14% water and 86% methoxyisopropylamine. The improvement for enhancing separation of the azeotrope includes initially distilling the mixture of methoxyisopropylamine, methoxyisopropanol and water under sufficient elevated pressure wherein an azeotrope of water and methoxyisopropylamine overhead and an essentially water free bottoms of methoxyisopropylamine and methoxyisopropanol are formed. The overhead from this initial distillation column is charged to a second distillation column operated at reduced pressure wherein an organic free bottoms containing primarily water is obtained.

Abstract: This invention relates to an improvement in a process for producing tert-butyl-derivatives of aromatic amines, e.g., para-phenylenediamine and toluenediamine by the reaction of isobutylene with the corresponding aromatic diamine in the presence of a highly acidic crystalline alumino-silicate catalyst. The improvement constitutes adding sufficient water to the catalyst to provide at least partial saturation of the catalyst during the reaction.

Abstract: The present invention is a class of polyimide membranes wherein the diamine portion of the polymer structure is formed from 2,5-di-t-butyl-1,4-phenylenediamine. Membranes formed from polyimides containing this diamine structure exhibit unexpectedly high gas permeability properties and are especially useful for separating oxygen from nitrogen or air.

Abstract: This invention relates to a process for separating mono-n-hexylamine from water and particularly to an improvement in a process for the recovery of mono-n-hexylamine from the reaction of n-hexanol with ammonia under amination conditions. In this process water is produced as a by-product and in the separation process an azeotrope is formed which comprises about 49% water and 51% hexylamine. The process for enhancing separation of the azeotrope of mono-n-hexylamine and water comprises contacting the azeotrope of mono-n-hexylamine and water with di-n-hexylamine or with a mixture of di-n-hexylamine and tri-n-hexylamine in sufficient amount to reduce the solubility of mono-n-hexylamine in water thus forming an organic phase and an aqueous phase which can be separated by simple techniques, e.g., decanting.

Abstract: This invention relates to an improved process for producing morpholine and its derivates by reacting ammonia and dialkylene glycol. The improvement resides in continuously charging the dialkylene glycol and ammonia to a trickle bed reactor, operating the reactor under conditions such that the dialkylene glycol is maintained as a discontinuous liquid phase and the morpholine formed is predominantly in the vapor phase.

Abstract: This invention relates to an improved process for synthesizing lower alkyl amines via the gas phase ammonolysis of a lower alkanol. The improvement in the gas phase ammonolysis process resides in the use of a finely divided hydrogenation catalyst comprising a group 8 metal supported on a comparatively neutral alumina substrate, said neutrality to the support being imparted by the addition of an alkaline earth metal.