发明申请
- 专利标题： Polyethylene glycol compounds and process for making
- 专利标题（中）： 聚乙二醇化合物及其制备方法
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申请号： US10952198申请日： 2004-09-28
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公开(公告)号： US20060074200A1公开(公告)日： 2006-04-06
- 发明人: Edward Daugs , Robert Appell
- 申请人： Edward Daugs , Robert Appell
- 主分类号： C08G65/32
- IPC分类号： C08G65/32
摘要：
A substituted polyethylene glycol compound and process for making. The compound has the formula RO(C2H4O)nH wherein R represents a C1-7 hydrocarbon group and n represents the average number of moles of C2H4O groups, ranging from 500 to 2000. The compound has a ratio of weight average molecular weight to a number average molecular weight in the range of from 1 to 1.1. The compound contains less than ten weight percent polyethylene glycol. The gist of the process is the use of an aprotic polar solvent. When the aprotic polar solvent is a polyether solvent, then the n value of the compound ranges from 100 to 2000.
公开/授权文献
- US07199193B2 Polyethylene glycol compounds and process of making 公开/授权日：2007-04-03
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