Patent ID: 9359205
Filing Date: 2016-06-07
CPC Classification: B01D,B01J,C01B,C07F

Claim Text:
1. A plant for reacting at least monohalosilane (A) and/or recycled monosilane (A′), and ammonia (B) in a solvent (H) in the liquid phase to form a product mixture for production of trisilylamine, said plant comprising: a) a stirred reactor equipped with liquid feed lines for the components (A) as solution in (H), and (A′) as solution in (H), a feed line for (B), optionally as a solution in (H) and a bottom liquid product mixture outlet opening into b) a filter unit which is connected to said reactor at the downstream end thereof and which in turn is equipped with a solids outlet for ammonium chloride (C) and with a line for conveying a filtrate out of said filter unit into c) a subsequent distillation unit which comprises at least three distillation columns and a first distillation column of said at least three distillation columns is equipped with an outlet overhead for a gaseous stream (D) and with an outlet overhead with a return line for condensed recycled monochlorosilane (A′) into the reactor under admixture of solvent (H) and also with a line for transferring bottoms (E) from the first distillation column of said at least three distillation columns into a subsequent second distillation column of said at least three distillation columns to recover trisilylamine (G) and also with a line for transferring bottoms (F) from the second distillation column of said at least three distillation columns into a subsequent third distillation column of said at least three distillation columns to recover solvent (H) and also export bottoms (I); wherein the solvent (H) is toluene; and wherein component (A) and/or (A′) is used in a molar stoichiometric excess relative to component (B).