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    • 3. 发明授权
    • Method of forming a dianhydrosugar alcohol
    • 形成二脱水糖醇的方法
    • US07649099B2
    • 2010-01-19
    • US11341961
    • 2006-01-26
    • Johnathan E. HolladayJianli HuYong WangTodd A. WerpyXinjie Zhang
    • Johnathan E. HolladayJianli HuYong WangTodd A. WerpyXinjie Zhang
    • C07C29/00C07D315/00C07D493/00C07H1/00C07H17/00C07H5/04C07H1/06C13K5/00
    • C07D307/20C07D493/04Y02P20/127
    • The invention includes methods of producing dianhydrosugars. A polyol is reacted in the presence of a first catalyst to form a monocyclic sugar. The monocyclic sugar is transferred to a second reactor where it is converted to a dianhydrosugar alcohol in the presence of a second catalyst. The invention includes a process of forming isosorbide. An initial reaction is conducted at a first temperature in the presence of a solid acid catalyst. The initial reaction involves reacting sorbitol to produce 1,4-sorbitan, 3,6-sorbitan, 2,5-mannitan and 2,5-iditan. Utilizing a second temperature, the 1,4-sorbitan and 3,6-sorbitan are converted to isosorbide. The invention includes a method of purifying isosorbide from a mixture containing isosorbide and at least one additional component. A first distillation removes a first portion of the isosorbide from the mixture. A second distillation is then conducted at a higher temperature to remove a second portion of isosorbide from the mixture.
    • 本发明包括生产二脱水甘油糖的方法。 多元醇在第一催化剂存在下反应形成单环糖。 将单环糖转移到第二反应器中,在第二反应器中,在第二催化剂的存在下将其转化为二脱水甘油醇。 本发明包括形成异山梨醇的方法。 在固体酸催化剂存在下,在第一温度下进行初始反应。 初始反应包括使山梨醇反应生成1,4-脱水山梨糖醇,3,6-脱水山梨糖醇,2,5-甘露聚糖和2,5-己烷。 利用第二温度,将1,4-脱水山梨醇和3,6-脱水山梨醇转化为异山梨醇。 本发明包括从含有异山梨醇和至少一种另外的组分的混合物中纯化异山梨醇的方法。 第一蒸馏从混合物中除去第一部分的异山梨醇。 然后在较高温度下进行第二次蒸馏以从混合物中除去第二部分的异山梨醇。
    • 4. 发明授权
    • Two-stage dehydration of sugars
    • 糖两步脱水
    • US07615652B2
    • 2009-11-10
    • US11341930
    • 2006-01-26
    • Johnathan E. HolladayJianli HuYong WangTodd A. Werpy
    • Johnathan E. HolladayJianli HuYong WangTodd A. Werpy
    • C07C29/00C07D315/00C07D493/00C07H1/00C07H17/00C07H5/04C07H1/06C13K5/00
    • C07D493/04
    • 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.
    • 本发明包括通过在反应器内提供酸催化剂并使原料在第一温度下通过反应器来生产二脱水甘油的方法。 在通过色谱柱期间,至少一部分起始物质被转化为单一脱氢葡萄糖异构体。 单糖酐经受大于第一温度的第二温度以产生二脱水糖。 本发明包括一种生产异山梨醇的方法。 含有山梨醇的初始进料流在小于120℃的温度下进料到含有酸催化剂的连续反应器中。反应器的停留时间小于或等于约30分钟。 随后将连续反应器中转化为1,4-脱水山梨醇的山梨糖醇提供给第二反应器,并在至少120℃的温度下脱水以制备异山梨醇。