Co-catalyst and process for the preparation of...

Details Co-catalyst and process for the preparation of... Co-catalyst and process for the preparation of...

2006-01-10

2006-01-10

Keys, Rosalynd (Department: 1621)

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

Organic compounds

Silicon containing

C556S400000, C556S465000

Reexamination Certificate

active

06984748

ABSTRACT:
In a Rochow process, organohalosilanes are prepared by reacting metallic silicon particles with an organohalide in the presence of a copper catalyst and a co-catalyst. The invention uses as the co-catalyst a powder of co-catalyst active element-copper alloy containing substantial strain energy because this co-catalyst can reduce the activation time taken until a steady state is reached, which has been an outstanding problem in Rochow reaction, maintain the steady state over time and increase the selectivity of desired diorganodihalosilane for eventually increasing the yield based on the starting silicon.

REFERENCES:
patent: 4504597 (1985-03-01), Klar et al.
patent: 4520130 (1985-05-01), Hashiguchi et al.
patent: 5817855 (1998-10-01), Langner et al.
patent: 6288258 (2001-09-01), Aramata et al.
patent: 6365766 (2002-04-01), Aramata et al.
patent: 6395917 (2002-05-01), Ishizaka et al.
patent: 6686312 (2004-02-01), Aramata et al.
patent: 9-173844 (1997-07-01), None
patent: 2000-254506 (2000-09-01), None
CA:108:150711 abs of CN 85102880 Sep. 1986.
CA:91:78090 abs of JP54002901.
Ralph E. Ricksecker, “Copper alloys”, in AccessScience@McGraw-Hill, http://www.accessscience.com, DOI 10.1036/1097-8542. 161000, Apr. 10, 2000, pp. 1-6.

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