Branched polymers from organohydrogensilicon compounds
US7432338B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2003 |
| Grant date | Oct 7, 2008 |
| Priority date | — |
| Expiry date | Dec 20, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/70
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a method comprising (1) heating in the presence of a catalyst a mixture comprising (i) at least one organohydrogensilicon compound containing at least one silicon-bonded hydrogen atom per molecule or 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 silicon-bonded hydrogen containing branched polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.