Process for the continuous preparation of acyloxysilanes

Details Process for the continuous preparation of acyloxysilanes Process for the continuous preparation of acyloxysilanes

1997-11-25

1999-08-17

Shaver, Paul F.

Organic compounds -- part of the class 532-570 series

Organic compounds

Silicon containing

C07F 708

Patent

active

059395753

ABSTRACT:
Acyloxysilanes are prepared by a process of reacting an organochlorosilane with an excess of monocarboxylic anhydride at elevated temperature, thereby forming product acyloxysilane and by-product acyl chloride transferring the reaction mixture to the middle inlet of a separation tower having a still pot at its base, removing excess carboxylic anhydride by distillation at the tower top under reduced pressure, removing acyl chloride by-product from the separation tower, uniformly removing acyloxysilane from the tower still pot, and reacting virtually quantitatively the residual acid chloride present in the acyloxysilane removed from the still pot by adding a metal carboxylate to the acyloxysilane and separating the metal chlorides formed from the product.

REFERENCES:
patent: 5187291 (1993-02-01), Seiler et al.
patent: 5387706 (1995-02-01), Rasmussen et al.
patent: 5523446 (1996-06-01), Tolentino et al.
patent: 5536860 (1996-07-01), Monkiewicz et al.
patent: 5646325 (1997-07-01), Monkiewicz et al.

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