发明授权
US07323539B2 Polytrimethylene ether glycol and polytrimethylene ether ester with excellent quality
有权
聚三亚甲基醚二醇和聚三亚甲基醚酯具有优良的品质
- 专利标题： Polytrimethylene ether glycol and polytrimethylene ether ester with excellent quality
- 专利标题（中）： 聚三亚甲基醚二醇和聚三亚甲基醚酯具有优良的品质
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申请号： US10918079申请日： 2004-08-12
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公开(公告)号： US07323539B2公开(公告)日： 2008-01-29
- 发明人: Hari Babu Sunkara , Howard Chung-Ho Ng
- 申请人： Hari Babu Sunkara , Howard Chung-Ho Ng
- 申请人地址： US DE Wilmington
- 专利权人： E. I. du Pont de Nemours and Company
- 当前专利权人： E. I. du Pont de Nemours and Company
- 当前专利权人地址： US DE Wilmington
- 主分类号： C08G61/00
- IPC分类号： C08G61/00 ; C08G65/34 ; C07C41/09 ; C07C43/11
摘要：
A process is provided comprising contacting 1,3-propanediol with a suitable polymerization catalyst to produce polytrimethylene ether glycol or random polytrimethylene ether ester, wherein the 1,3-propanediol comprises about 10 microg/g or less peroxide compounds, based on the weight of 1,3-propanediol, and about 100 microg/g or less carbonyl compounds based on the weight of the 1,3-propanediol. Preferably, the 1,3-propanediol comprises about 100 microg/g or less of monofunctional alcohol compounds based on the weight of the PDO. In addition, polytrimethylene ether glycol and random polytrimethylene ether ester prepared by the process.
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