Branched polymers from organohydrogensilicon compounds
US7449536B2 · kind B2 · utility
16Cited by
64References
20Claims
0Family size
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Key dates
| Filing date | Dec 17, 2003 |
| Grant date | Nov 11, 2008 |
| Priority date | — |
| Expiry date | Jan 2, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L83/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method comprising heating in the presence of a catalyst, a mixture comprising (i) a reaction product obtained by mixing in the presence of a platinum group metal-containing catalyst at least one organohydrogensilicon compound containing at least one silicon-bonded hydrogen atom per molecule and at least one compound having at least one aliphatic unsaturation; (ii) at least one endblocker, and optionally (iii) at least one organosiloxane chosen from a hydrolyzate or a cyclosiloxane, so to cause polymerization of components (i), (ii), and optionally (iii) to form branched polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.