Tetraalkylsilane synthetic fluids
US4578497A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 30, 1984 |
| Grant date | Mar 25, 1986 |
| Priority date | — |
| Expiry date | Nov 30, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07F7/0805
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Tetraalkylsilane compounds are produced by contacting an admixture comprising PA1 (A) at least one alkylsilane selected from the group consisting of PA2 (i) a monoalkylsilane having the formula EQU R--Si--H.sub.3, PA2 (ii) a dialkylsilane having the formula EQU R--SiH.sub.2 --R.sub.1, PA2 (iii) a trialkylsilane having the formula EQU R--SiH--(R.sub.1).sub.2, PA1 and mixtures thereof, wherein R and R.sub.1 each represent an alkyl radical of from one to 20 carbon atoms per molecule, and PA1 (B) at least one alpha olefin containing from two to about 20 carbon atoms per molecule, under an inert atmosphere with an oxygenated, platinum-containing catalyst in which the platinum catalyst is selected from the group consisting of (i) a platinum catalyst having a basicity substantially equal to or less than that provided by a platinum-containing catalyst having a triphenylphosphine ligand, or (ii) a heterogeneous platinum-containing catalyst, under hydrosilylation conditions. The platinum-containing catalyst can be oxygenated prior to use in the hydrosilylation process or by interrupting the hydrosilylation process and contacting the catalyst with an oxygen-containing gas prior to resuming th…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.