| 发明名称 | Method for preparing high purity anhydrosugar alcohols by thin film distillation | ||
| 摘要 | The present invention relates to a method for preparing high purity anhydrosugar alcohols using hydrogenated sugar, and more specifically, to a method for preparing high purity anhydrosugar alcohols (particularly, isosorbide, isomannide, isoidide, and the like) with a purity of 97.5% or higher (more preferably, 98.5% or higher) and a pH of a distillate of 3.7 or higher (more preferably, 4.0 or higher) in a distillation yield of 87% or higher (more preferably, 90% or higher) by adding an acid to hexitol so as to convert the same into anhydrosugar alcohols, and single-stage distilling the converted product by using an internal condenser type thin film evaporator. | ||
| 申请公布号 | US9290508(B2) | 申请公布日期 | 2016.03.22 |
| 申请号 | US201314399031 | 申请日期 | 2013.05.09 |
| 申请人 | SAMYANG GENEX CORPORATION | 发明人 | Kyung Do Hyun;Jung Young Jae;Kim Jin Kyung;Ryu Hoon |
| 分类号 | C07D493/04;B01D1/22;B01D3/00;C07C29/80;B01D1/06;B01D5/00 | 主分类号 | C07D493/04 |
| 代理机构 | Birch, Stewart, Kolasch & Birch, LLP | 代理人 | Birch, Stewart, Kolasch & Birch, LLP |
| 主权项 | 1. A method for producing anhydrosugar alcohol comprising the steps of: converting hydrogenated sugar to anhydrosugar alcohol by dehydration reaction, and distilling the resulting liquid of the converting step, wherein the distilling step is conducted in an internal condenser type, thin-film evaporator comprising an internal condenser, an input line for raw material, an output line for distillation residue, a vacuum line and an output line for distillate. | ||
| 地址 | Seoul KR | ||