Process for preparing amino-functional organosilanes low in or free of chloro-functional organosilanes
AssigneeHuels Aktiengesellschaft
InventorsHartwig Rauleder, Claus-Dietrich Seiler, Hans-Joachim Koetzsch, Hans-Guenther Srebny
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Abstract
The invention relates to a process for preparing amino-functional organosilanes which are low in chlorofunctional organosilanes or essentially free of chlorofunctional organosilanes, by reacting chloro-functional organosilanes with organic amines or ammonia and separating off the organic ammonium chlorides and/or the ammonium chloride thus formed, wherein the small amounts of chloro-functional organosilanes which have not reacted with ammonia or alkylamines are reacted by addition of at least one metal alkoxide in a reaction downstream of the aminosilane synthesis.
Claims15
A process for preparing amino-functional organosilanes which are low in chloro-functional organosilanes or are essentially free of chloro-functional organosilanes, comprising the steps of reacting chloro-functional organosilanes with organic amines or ammonia and separating off the organic ammonium chlorides and/or the ammonium chloride formed, wherein residual chloro-functional organosilanes which have not reacted with the ammonia or organic amines are reacted by addition of at least one metal alkoxide to the amino-silane synthesis products in a reaction downstream of the aminosilane synthesis.
Dependencies are inferred from the claim text.