Process for cleaving the by-products of the direct synthesis of alkylchlorosilanes
US5627297A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 4, 1996 |
| Grant date | May 6, 1997 |
| Priority date | — |
| Expiry date | Apr 4, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/126
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The process for cleaving the heavy by-products derived from the synthesis of alkylchlorosilanes, in particular C.sub.1 to C.sub.6 alkylchlorosilanes, more particularly methylchlorosilanes, in particular for the cleavage of alkylchlorodisilanes, in particular methylchlorodisilanes having from one to five chlorine atoms, is carried out by treatment with hydrochloric acid in the presence of a catalytic system which comprises at least one metal phosphate, preferably associated with a basic impregnation compound. The metal phosphate may in particular correspond to the formula: EQU M(XPO.sub.4).sub.y in which M represents a metal chosen from: PA1 monovalent metals, in which case X is 2H and y=1 PA1 divalent metals, in which case X is H and y=1 PA1 trivalent metals, in which case X is absent and y=1 PA1 tetravalent metals, in which case X is: H and y=2 PA1 pentavalent metals, in which case X is 0 and y=1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.