发明名称 |
Two-stage dehydration of sugars |
摘要 |
The invention includes methods for producing dianhydrosugar alcohol by providing an acid catalyst within a reactor and passing a starting material through the reactor at a first temperature. At least a portion of the staring material is converted to a monoanhydrosugar isomer during the passing through the column. The monoanhydrosugar is subjected to a second temperature which is greater than the first to produce a dianhydrosugar. The invention includes a method of producing isosorbide. An initial feed stream containing sorbitol is fed into a continuous reactor containing an acid catalyst at a temperature of less than 120° C. The residence time for the reactor is less than or equal to about 30 minutes. Sorbitol converted to 1,4-sorbitan in the continuous reactor is subsequently provided to a second reactor and is dehydrated at a temperature of at least 120° C. to produce isosorbide.
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申请公布号 |
US2007173651(A1) |
申请公布日期 |
2007.07.26 |
申请号 |
US20060341930 |
申请日期 |
2006.01.26 |
申请人 |
HOLLADAY JOHNATHAN E;HU JIANLI;WANG YONG;WERPY TODD A |
发明人 |
HOLLADAY JOHNATHAN E.;HU JIANLI;WANG YONG;WERPY TODD A. |
分类号 |
C07D311/22 |
主分类号 |
C07D311/22 |
代理机构 |
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地址 |
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