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US 7,030,260 B2Granted
Preparation of mixed-halogen halo-silanes
AssigneeHoneywell International Inc.
InventorsEdward Asirvatham, Jeff Czarnecki, Matthew H. Luly, Lawrence F. Mullan, Alagappan Thenappan
Life of this patent
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Abstract
The preparation of halosilanes having mixed-halogen substituents is described comprising providing an aryl-halo-silane having one more first halogens and one or more aryl groups, and substituting one or more of said aryl groups of said aryl-halo-silane with a second halogen having an atomic number greater than that of said first halogen.
Claims26
A process for preparing a mixed halo-silane comprising the steps of:
- (a) providing an intermediate aryl-halo-silane having one or more third halogens and one or more aryl groups;
- (b) exchanging at least a portion of said one or more third halogens of said intermediate aryl-halo-silane with one or more first halogens to produce an aryl-halo-silane having one or more first halogens and one or more aryl group;
- and
- (c) substituting one or more of said aryl groups of said aryl-halo-silane with a second halogen having an atomic number greater than that of said first halogen.
1 more element
A process for preparing a mixed halo-silane comprising the steps of:
- (a) providing an aryl-halo-silane having one or more first halogens and one or more aryl groups;
- and
- (b) substituting one or more of said aryl groups of said aryl-halo-silane with a second halogen having an atomic number greater than that of said first halogen,
- wherein providing said aryl-halo-silane comprises preparing said aryl-halo-silane by providing a halo-silane comprising two or more first halogens and replacing a portion of said two or more first halogens with one or more aryl groups to form said intermediate aryl-halo-silane.
1 more element
A process for preparing a mixed halo-silane comprising the steps of:
- (a) providing an aryl-halo-silane having one or more first halogens and one or more aryl groups;
- and
- (b) substituting one or more of said aryl groups of said aryl-halo-silane with a second halogen having an atomic number greater than that of said first halogen,
- wherein said aryl-halo-silane has the formula:
- (aryl)nSiaXb,
- and wherein said mixed halo-silane has the formula:
- (aryl)n-zSiaXbYz,
- wherein
- a=an integer from 1 to 10;
- 1n≦2a+1;
- b=(2a+2−n);
- and
- X and Y are independently selected from F, Cl, and Br, and I;
- the atomic number of X is less than Y;
- and
- 1≦z≦n.
13 more elements
Dependencies are inferred from the claim text.