Selective hydrosilylation method
US7259220B1 · kind B1 · utility
12Cited by
36References
32Claims
0Family size
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Key dates
| Filing date | Jul 13, 2006 |
| Grant date | Aug 21, 2007 |
| Priority date | — |
| Expiry date | Jul 13, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S424/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An asymmetric siloxane is made by reacting a silicone having the formula MHDxM′H where MH is R1R2HSiO1/2, M′H is R4R5HSiO1/2 and x is an integer 0≦x≦10 under selective hydrosilylation conditions in the presence of a precious metal hydrosilylation catalyst, with a first olefine compound and in a second step, a monohydridosiloxane produced in the first step is reacted under hydrosilylating condtions with another olefine compound different from the first olefine compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.