Method for the production of propylene oxide
    41.
    发明授权
    Method for the production of propylene oxide 有权
    生产环氧丙烷的方法

    公开(公告)号:US06756503B2

    公开(公告)日:2004-06-29

    申请号:US10312862

    申请日:2003-01-02

    IPC分类号: C07D30112

    CPC分类号: C07D301/12 Y02P20/582

    摘要: A process for the preparation of propylene oxide in which (i) propene is reacted with hydrogen peroxide in the presence of methanol to give propylene oxide, giving a mixture (Gi) comprising propylene oxide, methanol, water and unreacted hydrogen peroxide, (ii) a mixture (Gii) comprising methanol, water and hydrogen peroxide is separated off from the mixture (Gi), giving a mixture (Ga) comprising propylene oxide, and (iii) water is separated off from the mixture (Gii), giving a mixture (Giii) comprising methanol and methyl formate.

    摘要翻译: 一种制备环氧丙烷的方法,其中(i)丙烯在甲醇存在下与过氧化氢反应得到环氧丙烷,得到包含环氧丙烷,甲醇,水和未反应的过氧化氢的混合物(Gi),(ii) 从混合物(Gi)中分离出包含甲醇,水和过氧化氢的混合物(Gii),得到包含环氧丙烷的混合物(Ga),和(iii)从混合物(Gii)中分离出水,得到混合物 (Giii),其包含甲醇和甲酸甲酯。

    Process for the preparation of acyloins
    44.
    发明授权
    Process for the preparation of acyloins 失效
    制备偶姻的方法

    公开(公告)号:US5831097A

    公开(公告)日:1998-11-03

    申请号:US776106

    申请日:1997-01-21

    摘要: A process for the preparation of acyloins of the general formula I ##STR1## in which R.sup.a and R.sup.b are the same or different and stand for hydrogen or an optionally substituted C.sub.1 -C.sub.20 alkyl, an optionally substituted C.sub.6 -C.sub.10 aryl, an optionally substituted C.sub.7 -C.sub.12 aralkyl, an optionally substituted heteroaryl, or an optionally substituted heterocycloalkyl group, except for autocondensation products of formaldehyde, wherein an aldehyde of the formula II R.sup.a CHO, (II) is reacted, in the presence of a catalyst, with an aldehyde of the formula III R.sup.b CHO, (III) in which R.sup.a and R.sup.b have the above meanings and at least one of the radicals R.sup.a and R.sup.b denotes a radical other than hydrogen, which have been produced, with the assistance of an auxiliary base, from a triazolium salt of the formula IV ##STR2##

    摘要翻译: PCT No.PCT / EP95 / 02660 Sec。 371日期1997年1月21日 102(e)日期1997年1月21日PCT提交1995年7月8日PCT公布。 出版物WO96 / 02484 日本1996年2月1日制备通式I(I)的偶姻的方法,其中Ra和Rb相同或不同,代表氢或任选取代的C 1 -C 20烷基,任选取代的C 6 - C 10芳基,任选取代的C 7 -C 12芳烷基,任选取代的杂芳基或任选取代的杂环烷基,除了甲醛的自缩合产物,其中式IIRaCHO,(II)的醛在催化剂存在下与 式IIIRbCHO(III)的醛,其中Ra和Rb具有上述含义,并且基团Ra和Rb中的至少一个表示除了氢以外的基团,其在辅助碱的辅助下由 (IV)的三唑鎓盐

    Process for purifying N2O
    45.
    发明授权
    Process for purifying N2O 有权
    净化N2O的工艺

    公开(公告)号:US08808430B2

    公开(公告)日:2014-08-19

    申请号:US12936101

    申请日:2009-03-13

    IPC分类号: B01D53/14

    摘要: The present invention relates to a process for purifying a gas mixture comprising dinitrogen monoxide, at least comprising the treatment of a gas mixture G-0 comprising dinitrogen monoxide to obtain a gas mixture G-A, at least comprising the absorption of the gas mixture G-0 in a solvent mixture S-I to obtain an offgas stream and a composition C-A, and the desorption of a gas mixture G-1 from the composition C-A to obtain a solvent mixture S-I′, subsequent condensation of the gas mixture G-A to obtain a liquid composition C-1 comprising dinitrogen monoxide and a gaseous mixture G-K, wherein the gaseous mixture G-K is recycled into the process.

    摘要翻译: 本发明涉及一种纯化包含一氧化二氮的气体混合物的方法,至少包括处理包含一氧化二氮的气体混合物G-0以获得气体混合物GA,至少包括气体混合物G-0的吸收 在溶剂混合物SI中以获得废气流和组合物CA,并且从组合物CA中解吸气体混合物G-1以获得溶剂混合物SI',随后使气体混合物GA冷凝以获得液体组合物C -1,其包含一氧化二氮和气体混合物GK,其中气态混合物GK被再循环到该方法中。

    Process for the isolation of dodecatrienal and its use as aroma substance
    49.
    发明授权
    Process for the isolation of dodecatrienal and its use as aroma substance 有权
    分离十二碳三烯的方法及其作为芳香物质的用途

    公开(公告)号:US08212082B2

    公开(公告)日:2012-07-03

    申请号:US12694851

    申请日:2010-01-27

    摘要: The present invention relates to a process for preparing at least one compound with Z−1 cycles and 7 to 16 carbon atoms with at least one aldehyde group, at least comprising the stages: (a1) oxidation of a composition (A), at least comprising a cyclic olefin with Z cycles and 7 to 16 carbon atoms and at least two C—C double bonds, by means of dinitrogen monoxide to give a composition (A1), (a2) separating off the at least one cyclic olefin with Z cycles and 7 to 16 carbon atoms with at least two C—C double bonds from the composition (A1) from stage (a1) in order to obtain a composition (A2), (b1) separating off the at least one cyclic compound with Z cycles and 7 to 16 carbon atoms with a keto group from the composition (A2) from step (a2), in order to obtain a composition (B1), comprising at least 50% by weight of the at least one compound with Z−1 cycles and 7 to 16 carbon atoms with at least one aldehyde group and at least two C—C double bonds, where Z may be 1, 2, 3 or 4.

    摘要翻译: 本发明涉及至少一种具有Z-1个循环和7-16个碳原子的化合物与至少一个醛基的制备方法,至少包括以下步骤:(a1)组合物(A)的氧化,至少 包含具有Z循环和7至16个碳原子的环烯烃以及至少两个C-C双键的方法,借助于一氧化二氮,得到组合物(A1),(a2)以Z循环分离出至少一种环状烯烃 和从碳(a1)组合物(A1)至少具有两个C-C双键的碳原子数为7〜16的碳原子,以获得组合物(A2),(b1)以Z循环分离出至少一种环状化合物 和具有来自步骤(a2)的组合物(A2)的酮基的7至16个碳原子,以获得组合物(B1),其包含至少50重量%的至少一种Z-1循环的化合物 和具有至少一个醛基和至少两个C-C双键的7至16个碳原子,其中Z可以是1,2,3或4。