Air Products and Chemicals, Inc.

Yin Pang Tsui

Robert K Pinschmidt, Jr

Ravi Kumar Laxman

Andrew Francis Nordquist

Francis Peter Petrocelli

Rajiv Krishan Agarwal

Thomas Elwood Zellner

A process for synthesizing an aminosilane compound such as bis(tertiarybutylamino)silane is provided. In one aspect of the present invention, there is provided a process for making bis(tertiarybutylamino)silane comprising reacting a stoichiometric excess of tert-butylamine with dichlorosilane under anhydrous conditions sufficient such that a liquid comprising the bis(tertiarybutylamino)silane product is produced.

Process for the production and purification of bis(tertiary-butylamino)silane

This invention describes an integrated process for making ethylidene bisformamide in high yield wherein water, which is formed as a reaction by-product, is readily removed from the reaction product mixture without adversely affecting the efficiency of the overall process. The process contemplates isolating the reaction zone from the separation zone and comprises circulating a stream of formamide through a reaction zone containing a solid acidic catalyst and a separation zone; introducing acetaldehyde into the circulating stream of formamide to form a reaction mixture and contacting the reaction mixture with the solid acidic catalyst under reaction conditions sufficient to form a product mixture comprising ethylidene bisformamide and water; and separating water from the product mixture in the separation zone to form a water-depleted product mixture containing ethylidene bisformamide.

Process for preparing ethylidene bisformamide

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Carlsbad, CA, United States of America

Yin Pang Tsui