Direct method for synthesising alkylhalogenosilanes

Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing

Reexamination Certificate

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C556S473000

Reexamination Certificate

active

07626050

ABSTRACT:
Process for the preparation of alkylhalosilanes by reaction of an alkyl halide, preferably CH3Cl, with a solid body, referred to as contact body, formed of silicon and of a catalytic system comprising (α) a copper catalyst and (β) a group of promoting additives comprising:an additive β1 chosen from metallic zinc, a zinc-based compound and a mixture of these entities,an additive β2 chosen from tin, a tin-based compound and a mixture of these entities,optionally an additive β3 chosen from cesium, potassium, rubidium, a compound derived from these metals and a mixture of these entities,said direct synthesis process being characterized by the following points, taken in combination:the copper catalyst (α) is in the form of metallic copper. of a copper halide or of a mixture of these entities,the contact body additionally includes a supplementary promoting additive β4 chosen from a derivative of an acid of phosphorus and a mixture of these entities.

REFERENCES:
patent: 4500724 (1985-02-01), Ward, III et al.
patent: RE33452 (1990-11-01), Ward, III et al.
patent: 5059343 (1991-10-01), Halm et al.
patent: 5596119 (1997-01-01), Halm et al.
patent: 5847181 (1998-12-01), Nakanishi et al.
patent: 6005130 (1999-12-01), Lewis et al.
patent: 6242629 (2001-06-01), Ueno et al.
patent: 6258970 (2001-07-01), Ward et al.
patent: 7202192 (2007-04-01), Colin
patent: 7238638 (2007-07-01), Colin
patent: 34 25 424 (1985-02-01), None
patent: 0 778 279 (1997-06-01), None
patent: 1 156 051 (2001-11-01), None
patent: 1 173 447 (2002-01-01), None
patent: 2 848 211 (2004-06-01), None

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