| 发明名称 |
Method of making organohalosilanes |
| 摘要 |
The invention pertains to a process for the preparation of organohalosilanes. The process comprises contacting a first finely-divided silicon comprising from 0.08 to 0.25% (w/w) of aluminum with an organohalide in a reactor at a temperature of from 250 to 350° C. in the presence of a Direct Process catalyst comprising copper, and a promotor; and introducing a second finely-divided silicon into the reactor comprising from 0.001 to <0.10% (w/w) of aluminum into the reactor as needed in an amount sufficient to maintain an aluminum concentration of from 0.08 to 0.2% (w/w), based on a weight of unreacted silicon and aluminum. |
| 申请公布号 |
US8962877(B2) |
申请公布日期 |
2015.02.24 |
| 申请号 |
US201013499707 |
申请日期 |
2010.07.28 |
| 申请人 |
Dow Corning Corporation |
发明人 |
Kohane Joseph Peter;Pillai Unnikrishnan R.;Wineland Jonathan David |
| 分类号 |
C07F7/16 |
主分类号 |
C07F7/16 |
| 代理机构 |
|
代理人 |
Brown Catherine U. |
| 主权项 |
1. A method of preparing organohalosilanes, the method comprising:
(i) contacting a first finely-divided silicon comprising from 0.08 to 0.25% (w/w) of aluminum with an organohalide in a reactor at a temperature of from 250 to 350° C. in the presence of a Direct Process catalyst comprising copper, and a promotor; and (ii) introducing a second finely-divided silicon comprising from 0.001 to<0.10% (w/w) of aluminum into the reactor as needed in an amount sufficient to maintain an aluminum concentration from 0.08 to 0.2% (w/w), based on a total weight of unreacted silicon and aluminum. |
| 地址 |
Midland MI US |
