Abstract: The present invention provides a process for producing an alkoxysilane, safely and constantly in the commercial scale, from an inexpensive and readily available raw material, via a completely new reaction route, and in an energy-saving manner as well as under a low environmental load.

Abstract: A process for recovering N-vinyl-2-pyrrolidone is provided which allows to recover N-vinyl-2-pyrrolidone efficiently and steadily and in high purity by continuous distillation from a mixed liquid containing N-vinyl-2-pyrrolidone, N-(2-hydroxyethyl)-2-pyrrolidone, compounds having a higher boiling point than N-vinyl-2-pyrrolidone and water. The process includes continuously distilling the mixed liquid using a distilling column, controlling the temperature of the bottom liquid of the distilling column at 180° C. or less.

Abstract: There is provided a process for producing a tertiary amine compound in one step without using any subsidiary raw material or any solvent, by subjecting a secondary amine compound and an alcohol to an intermolecular dehydration reaction in a gas phase. The process uses, as a catalyst, an oxide containing an alkali metal element and/or an alkaline earth metal element and silicon.

Abstract: A method for the preparation of (meth)acrylonitriles following ammoxidation process comprising catalytically oxidizing at least one saturated hydrocarbon selected from the group consisting of propane and isobutane with a mixed gas containing mole-cular oxygen and ammonia in the presence of a catalyst, is provided, the method being characterized by the use of a catalyst composed of complex oxide which is expressed by the general formula (I) below:Cr.alpha.Sb.beta.W.gamma.Ox (I)(in which .alpha., .beta. and .gamma. denote the number of atoms of Cr, Sb and W, respectively, and when .alpha. is 1, .beta. is 0.5-5 and .gamma. is 0.2-2; and x is a value determined by valence of the existing elements).According to this method, the object nitriles can be prepared at high yields with industrial advantages.

Abstract: There is provided a simple and rational process for production of a vinyl ether, which comprises subjecting a 2-hydroxyalkoxy compound having, in the molecule, at least one 2-hydroxyalkoxy group and at least one functional group selected from the group consisting of a hydroxyl group and an amino group, to an intramolecular dehydration reaction in a gas phase to convert the compound into a corresponding functional group-containing vinyl ether in one step without using any subsidiary raw material or any solvent. The process is characterized by using, as a catalyst, an oxide containing an alkali metal element and/or an alkaline earth metal element and silicon.

Abstract: The present invention provides a process for producing an N-vinyl compound, which comprises subjecting an N-(-alkoxyalkyl) compound to gas phase intramolecular alcohol elimination to convert said compound to an N-vinyl compound directly in one step, wherein a solid oxide containing phosphorus and an alkali metal and/or an alkaline earth metal is used as a catalyst. This process need not use any solvent or any auxiliary raw material and consequently can produce an N-vinyl compound simply and safely without generating any waste material derived from the auxiliary raw material.