Process For Preparing Monohydrogentrihalosilanes
AssigneeDow Corning Corporation
InventorsPatrick Harder, Tyler Swenson, David Williams
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Abstract
A process for preparing a product including a monohydrogentrihalosilane is disclosed. The process includes the steps of: 1) initially charging a reactor with a contact mass including both fresh silicon and recycled contact mass, where the recycled contact mass is obtained from during or after a production phase of an inorganic Direct Process reaction for production of a monohydrogentrihalosilane; and thereafter 2) feeding to the reactor a hydrogen halide and additional fresh silicon, thereby forming the product.
Claims21
A process for preparing a product comprising a monohydrogentrihalosilane of formula HSiX3, where each X is independently a halogen atom, where the process comprises:
- 1) charging a reactor with a contact mass of fresh silicon and recycled contact mass, where the recycled contact mass is obtained during or after a production phase of an inorganic Direct Process reaction;
- and thereafter
- 2) feeding to the reactor a hydrogen halide of formula HX and additional fresh silicon, thereby forming the product.
A process for preparing a product comprising a monohydrogentrihalosilane of formula HSiX3, where each X is independently a halogen atom, the process comprises:
- 1) charging a reactor with a contact mass of fresh silicon and spent silicon, where the spent silicon is obtained no earlier than beginning a drop in overall selectivity of an inorganic Direct Process reaction campaign;
- and thereafter
- 2) feeding to the reactor a hydrogen halide of formula HX and additional fresh silicon, thereby forming the product.
(canceled)
Dependencies are inferred from the claim text.