Invention Grant
- Patent Title: Method for preparing multi-arm poly (ethylene glycol) amines
- Patent Title (中): 制备多臂聚（乙二醇）胺的方法
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Application No.: US11732952Application Date: 2007-04-05
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Publication No.: US07868132B2Publication Date: 2011-01-11
- Inventor: Henry Keith Chenault
- Applicant: Henry Keith Chenault
- Applicant Address: US DE Wilmington
- Assignee: E. I. du Pont de Nemours and Company
- Current Assignee: E. I. du Pont de Nemours and Company
- Current Assignee Address: US DE Wilmington
- Main IPC: C08G73/02
- IPC: C08G73/02 ; C08G65/34 ; C07C209/00
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.
Public/Granted literature
- US20070249870A1 Method for preparing multi-arm poly (ethylene glycol) amines Public/Granted day:2007-10-25
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