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1. 发明授权

US5559219A Modified process for the direct production of alkyl glycosides 失效
标题翻译：直接生产烷基糖苷的改良方法
公开(公告)号：US5559219A
公开(公告)日：1996-09-24
申请号：US952535
申请日：1992-02-09
申请人： Willi Wuest , Joseph Wollmann , Rainer Eskuchen
发明人： Willi Wuest , Joseph Wollmann , Rainer Eskuchen
IPC分类号： C07H15/04 , C07H1/00 , C07H3/02
CPC分类号： C07H15/04
摘要： Alkyl glycosides are produced by direct synthesis from higher monofunctional alcohols and powder-form glycoses, particularly anhydrous glucose and/or glucose monohydrate, in the presence of acidic catalysts at elevated temperatures, the interior of the reactor being kept under reduced pressure and the glycose being introduced with delay into the alcohol reactants present in excess therein, the alcohol reactants containing the acidic catalyst and being heated to the reaction temperature, while water released in the reaction mixture is removed from the reaction zone via the gas phase. A partial stream is run off from the liquid reaction mixture and delivered to a premixing zone into which the powder-form reactant is simultaneously introduced and is converted with the liquid partial stream into a paste which is delivered to the interior of the reactor via a following intensive mixer. The premixing zone is in direct pressure equalization with the reduced pressure of the reactor interior via the intensive mixer on the one hand and, at the same time, with the ambient pressure via the feed unit used for the powder-form glycose on the other hand, the consistency of the paste formed in the premixing zone being selected so that the paste serves as a pressure-equalizing sealing compound and, hence, as a so-called "living seal".
摘要翻译： PCT No.PCT / EP91 / 01010 Sec。 371日期1992年2月9日 102（e）1992年2月9日PCT PCT 1991年5月31日PCT公布。出版物WO91 / 19722 日期1991年12月26日烷基糖苷通过在高温下在酸性催化剂存在下由高级单官能醇和粉末形糖糖，特别是无水葡萄糖和/或葡萄糖一水合物进行直接合成来制备，反应器内部保持减少压力，并且将糖类延迟引入其中存在的醇反应物中，醇反应物含有酸性催化剂并被加热至反应温度，同时通过气相将反应混合物中释放的水从反应区除去。部分物流从液体反应混合物中流出并且被输送到预混合区，粉末形式的反应物同时被引入到该预混合区中，并且用液体部分流转化成糊状物，该浆料经由下列物质被输送到反应器的内部密集搅拌机一方面，预混合区域通过强化混合器在反应器内部的压力下进行直接均压，另一方面，通过用于粉末形式的糖的进料单元的环境压力选择在预混合区中形成的糊状物的稠度，使得糊状物用作均压密封剂，因此作为所谓的“活性密封”。

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