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    PROCEDE DE PREPARATION DE NITRITES D'ALKYLES
    52.
    发明公开
    PROCEDE DE PREPARATION DE NITRITES D'ALKYLES 审中-公开
    用于生产亚硝酸烷基酯

    公开(公告)号：EP1268394A1

    公开(公告)日：2003-01-02

    申请号：EP01921463.4

    申请日：2001-04-03

    Applicant: RHODIA CHIMIE

    Inventor： KARRER, Philippe ,  BALZANO, Sébastien

    IPC: C07C201/04

    CPC classification number: C07C201/04 ,  C07C203/00

    Abstract: The invention concerns a method for preparing alkyl nitrites of formula (I) R ONO wherein R represents a C1-C20, advantageously C2-C10 linear or branched alkyl group. The invention is characterised in that it consists in gradually and continuously adding in an aqueous medium, an alcohol of formula (II) R OH, R being as defined above, a nitrite of formula (III) M NO2, wherein M represents a metal cation, and a strong acid, so as to form continuously said alkyl nitrite, and in continuously drawing off said alkyl nitrite thus formed from the reaction medium.

    Verfahren zur kontinuierlichen Herstellung von Alkylnitriten
    54.
    发明公开
    Verfahren zur kontinuierlichen Herstellung von Alkylnitriten 失效
    Verfahren zur kontinuierlichen Herstellung von Alkylnitriten。

    公开(公告)号：EP0600309A1

    公开(公告)日：1994-06-08

    申请号：EP93118554.0

    申请日：1993-11-18

    Applicant: BAYER AG

    Inventor： Landscheidt, Heinz, Dr. ,  Wagner, Paul, Dr. ,  Klausener, Alexander, Dr.

    IPC: C07C203/00 ,  C07C201/04

    CPC classification number: C07C201/04 ,  C07C203/00

    Abstract: C₁-C₆-Alkylnitrite können durch Umsetzung von Stickstoffdioxid mit C₁-C₆-Alkoholen hergestellt werden, indem man in einer im Gegenstrom betriebenen Kolonne den Alkohol oder ein Alkohol/Wasser-Gemisch in den oberen Teil der Kolonne einspeist und das Stickstoffdioxid oder ein Stickstoffdioxid/Inertgas-Gemisch in den unteren Teil der Kolonne einspeist. Das entstehende Alkylnitrit wird als Kopfprodukt und die mitentstehende Salpetersäure als Fußprodukt an der Kolonne entnommen.

    Abstract translation: C1-C6烷基亚硝酸盐可以通过二氧化氮与C 1 -C 6醇的反应来制备，所述方法是在以逆流方式将醇或醇/水混合物中进料到柱的上部，并将二氧化氮 或二氧化氮/惰性气体混合物进入塔的下部。 所得到的亚硝酸烷基酯作为顶部产物和共同形成的硝酸作为塔的底部产物被除去。

    Preparation of nitrite esters in vapor phase from nitrogen oxide and alcohol
    55.
    发明公开
    Preparation of nitrite esters in vapor phase from nitrogen oxide and alcohol 失效
    Verfahren zur Herstellung von Nitritestern aus Stickstofftrioxid und Alkohol in der Dampfphase。

    公开(公告)号：EP0076217A2

    公开(公告)日：1983-04-06

    申请号：EP82401770.1

    申请日：1982-09-29

    Applicant: UNION CARBIDE CORPORATION

    Inventor： Doumaux, Arthur, Jr. ,  Downey, James Michael ,  Henry, Joseph Peter ,  Hurt, John Marion

    IPC: C07C76/00 ,  C07C76/02 ,  C07C77/00

    CPC classification number: C07C201/04 ,  C07C203/00

    Abstract: The invention deals with the preparation of nitrite esters in vapor phase from nitrogen oxide, alcohol and an inert diluent.
    The reaction, which occurs between 50 and 140°C at or above atmospheric pressure, takes place into a first reaction zone optimizing the reaction N z O 3 + ROH → RONO + HONO and a second reaction zone optimizing the reaction ROH + HONO → RONO + H 2 0.
    The formation of acid by-products is minimized as compared to a unitary reaction zone.

    Abstract translation: 本发明涉及从氮氧化物，醇和惰性稀释剂制备气相中的亚硝酸酯。 在大气压以上或更高温度下发生在50至140℃之间的反应发生在优化反应N 2 O 3 + ROH→RONO + HONO的第一反应区和优化反应ROH + HONO→RONO + H2O。 与单一反应区相比，酸副产物的形成最小化。

    Preparation of methyl or ethyl nitrite from the corresponding alcohols in a vapor phase process
    59.
    发明公开
    Preparation of methyl or ethyl nitrite from the corresponding alcohols in a vapor phase process 失效
    Herstellung von Methyl-oderÄthylnitritaus den entsprechenden Alkoholen in einem Dampfphasenprozess。

    公开(公告)号：EP0057143A1

    公开(公告)日：1982-08-04

    申请号：EP82400120.0

    申请日：1982-01-22

    Applicant: UNION CARBIDE CORPORATION

    Inventor： Doumaux, Arthur Roy, Jr. ,  Downey, James Michael ,  Henry, Joseph Peter ,  Hurt, John Marion

    IPC: C07C76/00 ,  C07C77/00

    CPC classification number: C07C201/04 ,  C07C203/00

    Abstract: The invention deals with the preparation of methyl or ethyl nitrite from the corresponding alcohols in a vapor phase process.
    A molar amount of nitrogen oxide composition containing a nitric oxide to nitrogen dioxide molar ratio of greater than 1 is reacted in a vapor state in a reactor (76) with a molar amount of vaporized methanol or ethanol wherein the molar ratio of methanol or ethanol to the combined molar amount of nitric oxide and nitrogen dioxide is greater than 1, at a temperature of 10°C to 300°C in the presence of an inert gaseous diluent.
    This process may be run at relatively low temperature and pressure while minimizing the formation of by-products.

    Abstract translation: 本发明涉及在汽相工艺中从相应的醇制备甲基或亚硝酸乙酯。 含有大于1的一氧化氮与二氧化氮摩尔比的氮氧化物组合物的摩尔量在反应器（76）中与蒸发的甲醇或乙醇的摩尔量在蒸气状态下反应，其中摩尔比 的甲醇或乙醇至一氧化氮和二氧化氮的组合摩尔量大于1，在惰性气体稀释剂存在下，在10℃至300℃的温度下进行。 该方法可以在相对较低的温度和压力下运行，同时最小化副产物的形成。

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