Process for the separation of alcohols by distillation
    1.
    发明授权
    Process for the separation of alcohols by distillation 失效
    通过蒸馏分离醇的方法

    公开(公告)号:US5710261A

    公开(公告)日:1998-01-20

    申请号:US594506

    申请日:1996-01-31

    IPC分类号: C07H15/04

    摘要: Aliphatic alcohols with up to 30 and especially with 6 to 18 carbon atoms are separated from a mixture of alkyl glycosides and alcohols which are unreacted during the production of these glycosides, by single or multi-stage distillation. The alcohols are distilled off by a drop film evaporator to impoverish the reaction mixture to residual alcohol contents of 5 wt % and under. The strip load of the drop film evaporator is set to at least 1.0 m.sup.3 /h m, especially at least 1.8 m.sup.3 /h m and preferably at least 3.0 m.sup.3 /h m. It is possible to reduce the alcohol content of the product to any value between 0.1 and 5 wt % at acceptable overall cost.

    摘要翻译: 通过单阶段或多阶段蒸馏,在生产这些糖苷期间将具有多达30个,特别是6至18个碳原子的脂族醇从烷基糖苷和醇的混合物中分离出来,所述烷基糖苷和醇是未反应的。 通过滴膜蒸发器蒸馏掉醇,将反应混合物贫化至5重量%以下的残留醇含量。 降膜蒸发器的带材负载设定为至少1.0m 3 / h m,特别是至少1.8m 3 / h m,优选至少3.0m 3 / h m。 可以以可接受的总成本将产品的醇含量降低至0.1至5重量%之间的任何值。

    Process for obtaining carotene from palm oil
    2.
    发明授权
    Process for obtaining carotene from palm oil 失效
    从棕榈油中获得胡萝卜素的方法

    公开(公告)号:US5902890A

    公开(公告)日:1999-05-11

    申请号:US913710

    申请日:1997-10-22

    CPC分类号: C07C403/24

    摘要: Carotene is recovered from a native fat or oil in five process steps in an economical industrial process. The native fat or oil is catalytically reacted in known manner with an alkanol containing up to 4 carbon atoms to form fatty acid alkyl ester and glycerol. The ester phase of the reaction mixture is subjected to distillation to remove the fatty acid alkyl ester. The distillation residue obtained in the second process step is saponified, carotene is extracted from the product obtained in the third process step and the extract phase is concentrated by evaporation. A yield of at least about 80% is achieved. At the same time, a fatty acid alkyl ester suitable for further processing to fatty alcohol is provided.

    摘要翻译: PCT No.PCT / EP96 / 01040 Sec。 371日期1997年10月22日第 102(e)日期1997年10月22日PCT 1996年3月11日PCT公布。 WO96 / 29306 PCT公开号 日期1996年9月26日在一个经济的工业过程中,五种工艺步骤中,从天然脂肪或油中回收了罗素。 天然脂肪或油以已知的方式与含有至多4个碳原子的链烷醇催化反应以形成脂肪酸烷基酯和甘油。 将反应混合物的酯相进行蒸馏除去脂肪酸烷基酯。 将第二工序中得到的蒸馏残渣皂化,从第三工序中得到的产物中提取胡萝卜素,蒸发浓缩萃取相。 达到至少约80%的产率。 同时,提供了适于进一步加工成脂肪醇的脂肪酸烷基酯。

    Process for the removal of alcohols
    3.
    发明授权
    Process for the removal of alcohols 失效
    醇的去除方法

    公开(公告)号:US5480978A

    公开(公告)日:1996-01-02

    申请号:US282409

    申请日:1994-07-28

    IPC分类号: C07H15/04 C07H1/06

    CPC分类号: C07H15/04

    摘要: The invention relates to a process for the removal of alcohols containing up to 30 and, more particularly, between 8 and 18 carbon atoms by distillation from a mixture of alkyl glycosides and alcohols remaining unreacted in the production of these alkyl glycosides, the alcohols being removed in two stages, a falling-film evaporator being used in the first stage and a thin-layer evaporator being used in the second stage.

    摘要翻译: 本发明涉及通过从烷基糖苷和在这些烷基糖苷生产中残留未反应的醇的混合物中蒸馏而除去含有至多30个,更特别是8-18个碳原子的醇的方法,该醇被除去 在两个阶段中,在第一阶段使用降膜蒸发器,在第二阶段中使用薄层蒸发器。

    Process for the production of alkyl and/or alkenyl oligoglycosides
    6.
    发明授权
    Process for the production of alkyl and/or alkenyl oligoglycosides 失效
    制备烷基和/或烯基低聚糖苷的方法

    公开(公告)号:US5898070A

    公开(公告)日:1999-04-27

    申请号:US793018

    申请日:1997-03-17

    IPC分类号: C07H15/04 C07G3/00 C07H1/00

    CPC分类号: C07H15/04

    摘要: The invention relates to an improved process for the production of alkyl and/or alkenyl oligoglycosides corresponding to formula (I):R.sup.1 O-�G!.sub.p (I)in which R.sup.1 is an alkyl and/or alkenyl radical containing 4 to 22 carbon atoms, G is a sugar unit containing 5 or 6 carbon atoms and p is a number of 1 to 10, by acid-catalyzed acetalization of primary alcohols with monomeric carbohydrates, in which the reaction is carried out in a stirred tank reactor surmounted by a vacuum falling-film evaporator through which the mixture is pumped under reaction conditions.

    摘要翻译: PCT No.PCT / EP95 / 03158 Sec。 371日期1997年3月17日 102(e)1997年3月17日PCT PCT 1995年8月9日PCT公布。 公开号WO96 / 05210 日本特开1996年2月22日本发明涉及一种生产与式(I)相应的烷基和/或烯基低聚糖苷的改进方法:R1O- [G] p(Ⅰ),其中R1是含有烷基和/或烯基的基团 4至22个碳原子,G是含有5或6个碳原子的糖单元,p是1至10的数,通过伯醇与单体碳水化合物的酸催化缩醛化反应,其中反应在搅拌槽 反应器由真空降膜蒸发器覆盖,在反应条件下将混合物泵送通过该蒸发器。