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    • 4. 发明授权
    • Process for the production of light-colored lower alkane-sulfonic acids,
more particularly methanesulfonic acid
    • 制备浅色低级烷烃磺酸,更特别是甲磺酸的方法
    • US5312974A
    • 1994-05-17
    • US778825
    • 1991-12-19
    • Willi WuestRainer EskuchenChristoph Lohr
    • Willi WuestRainer EskuchenChristoph Lohr
    • C07C303/02C07C309/04C07C61/00
    • C07C303/02
    • The description is of a process for the production of light-colored lower alkane sulfonic acids, especially methane sulphonic acid, by reacting the corresponding alkyl halide with alkaline halides and obtaining the free alkane sulphonic acid. In the process of the invention, the reaction is performed as a liquid/liquid reaction at temperature not exceeding 120 degrees C., and at such high pressures that even the lower alkyl halide is in the liquid phase at the reaction temperature, the aqueous reaction mixture is reduced by water content of some 50% wt. at the most, the alkaline sulphonic acid is liberated from its alkaline salt by the addition of HCl, the solid salt phase still remaining in the reaction mixture is separated out and the free alkaline sulphonic acid is obtained from the liquid phase. To obtain an alkane sulphonic acid which is virtually free of chloride ions, the primary reaction product concentrated into the aqueous salt sludge by the partial removal of water is preferably converted with a multi-molar excess of HCl is extracted from the isolated liquid phase and virtually chloride-free alkane sulphonic acid is obtained together with the residual water as the basic phase of distillation.
    • PCT No.PCT / EP90 / 00962 Sec。 371 1991年12月19日第 102(e)1991年12月19日PCT PCT 1990年6月19日PCT公布。 公开号WO91 / 00268 日本1991年1月10日。该描述是通过使相应的烷基卤化物与碱性卤化物反应并获得游离烷烃磺酸来生产浅色低级烷烃磺酸,特别是甲磺酸的方法。 在本发明的方法中,反应在不超过120℃的温度下作为液/液反应进行,并且在如此高的压力下,即使低级烷基卤化物在反应温度下处于液相, 混合物的含水量减少了约50%wt。 最多的是通过加入HCl将碱性磺酸从其碱性盐中释放出来,分离残留在反应混合物中的固体盐相,从液相中获得游离碱性磺酸。 为了获得基本上不含氯离子的烷烃磺酸,通过部分除去水而浓缩到含水盐污泥中的初级反应产物优选用多摩尔过量的HCl从分离的液相中提取,实际上 与残余水一起作为蒸馏的基本相,获得不含氯化物的烷烃磺酸。
    • 8. 发明授权
    • Modified process for the direct production of alkyl glycosides
    • 直接生产烷基糖苷的改良方法
    • US5559219A
    • 1996-09-24
    • US952535
    • 1992-02-09
    • Willi WuestJoseph WollmannRainer Eskuchen
    • Willi WuestJoseph WollmannRainer Eskuchen
    • C07H15/04C07H1/00C07H3/02
    • C07H15/04
    • 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".
    • 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”。