发明申请
US20170015676A1 PHOSPHONIC ACID CATALYST IN DEHYDRATIVE CYCLIZATION OF 5 AND 6 CARBON POLYOLS WITH IMPROVED COLOR AND PRODUCT ACCOUNTABILITY
审中-公开
具有改进颜色和产品责任性的5和6碳多元醇脱水循环中的磷酸催化剂
- 专利标题： PHOSPHONIC ACID CATALYST IN DEHYDRATIVE CYCLIZATION OF 5 AND 6 CARBON POLYOLS WITH IMPROVED COLOR AND PRODUCT ACCOUNTABILITY
- 专利标题（中）： 具有改进颜色和产品责任性的5和6碳多元醇脱水循环中的磷酸催化剂
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申请号： US15302368申请日： 2014-11-19
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公开(公告)号： US20170015676A1公开(公告)日： 2017-01-19
- 发明人: Kenneth Stensrud , Erik Hagberg
- 申请人： ARCHER DANIELS MIDLAND COMPANY
- 优先权： USPCT/US2014/033580 20140410
- 国际申请： PCT/US14/66298 WO 20141119
- 主分类号： C07D493/04
- IPC分类号： C07D493/04 ; C07D307/12 ; C07D307/20
摘要：
A process for preparing materials derived from sugar alcohols such that the dehydration products exhibit better accountability and improved color to water-clear or near water-white appearance is described. In particular, the process involves employing a reducing Brønsted acid (e.g., phosphonic acid) for the catalysis of sugar alcohols to their corresponding dehydrated-cyclized products.