Process for preparing a mixture of alkoxyacyloxy silane and alky

Details Process for preparing a mixture of alkoxyacyloxy silane and alky Process for preparing a mixture of alkoxyacyloxy silane and alky

1995-10-03

1996-06-04

Shaver, Paul F.

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

Organic compounds

Silicon containing

C07F 702

Patent

active

055234461

ABSTRACT:
A continuous method is provided for making a mixture of alkylpolyacyloxysilane and alkoxyacyloxysilane which is useful as a curing catalyst for a one part moisture curable silicone RTV. A steady-state mixture of alkylpolyacyloxysilane and alkoxyacyloxysilane is established in the reboiler of a distillation system having a reboiler, a distillation column, and a condenser as a result of the continuous introduction into the distillation column of a mixture of an alkyltrichlorosilane and silicon tetrachloride and the direct feeding of an alcohol such as tertiary butanol into the reboiler. A mixture comprising alkylpolyacyloxysilane and alkoxyacyloxysilane and aliphatic carboxylic is continuously pumped to a collection vessel. The continuous stripping and recycling of the aliphatic carboxylic from the collection vessel results in the continuous production of the desired silane mixture.

REFERENCES:
patent: 4176130 (1979-11-01), John et al.
patent: 4298753 (1981-11-01), Schinabeck et al.
patent: 4329484 (1981-11-01), Petersen
patent: 4332956 (1982-01-01), Tolentino
patent: 4410677 (1983-10-01), Lampe
patent: 5187291 (1993-02-01), Seiler et al.
patent: 5387706 (1995-02-01), Rasmussen et al.

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