Method for preparing multi-arm poly (ethylene glycol) amines
US7868132B2 · kind B2 · utility
8Cited by
5References
18Claims
0Family size
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Key dates
| Filing date | Apr 5, 2007 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | Sep 8, 2029 |
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) amines from multi-arm PEG polyols is described. The method comprises a two step process, wherein the multi-arm PEG polyol is first reacted with thionyl chloride to form a multi-arm PEG chloride, which is subsequently reacted with aqueous or anhydrous ammonia to yield the multi-arm PEG amine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.