Method for preparing multi-arm poly(ethylene glycol) chlorides
US8097696B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Dec 1, 2010 |
| Grant date | Jan 17, 2012 |
| Priority date | — |
| Expiry date | Dec 1, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G65/3344
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A method for preparing multi-arm poly(ethylene glycol) (PEG) chlorides from multi-arm PEG polyols is described. The method comprises a process, wherein the multi-arm PEG polyol is reacted with thionyl chloride to form the multi-arm PEG chloride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.