Process for preparing polyoxymethylene homopolymers or copolymers by homopolymerization or copolymerization of trioxane, starting from methanol
    2.
    发明授权
    Process for preparing polyoxymethylene homopolymers or copolymers by homopolymerization or copolymerization of trioxane, starting from methanol 失效
    通过三恶烷的均聚或共聚制备聚甲醛均聚物或共聚物的方法,从甲醇开始

    公开(公告)号:US08378144B2

    公开(公告)日:2013-02-19

    申请号:US12747742

    申请日:2008-12-11

    IPC分类号: C07C213/00

    CPC分类号: C07D323/06 C08G2/10

    摘要: A process for preparing polyoxymethylene homopolymers or copolymers (7) by homopolymerization or copolymerization of trioxane, starting from methanol (1), in which methanol (1) is oxidized in a first reactor in a first production plant (A) to give an aqueous formaldehyde-comprising stream (2) which is fed to a second production plant (B) in which pure trioxane (6) is obtained and removal of low boilers (5) by distillation is carried out and the pure trioxane (6) is fed to a third production plant (C) in which it is homopolymerized or copolymerized to form polyoxymethylene homopolymers or copolymers (7), wherein the low boiler stream (5) from the low boiler removal column (K 2) is recycled to the feed stream into the first reactor in the first production plant (A), is proposed.

    摘要翻译: 从甲醇(1)开始,通过三恶烷的均聚或共聚制备聚甲醛均聚物或共聚物(7)的方法,其中甲醇(1)在第一生产设备(A)中的第一反应器中被氧化,得到甲醛水溶液 (2),其被供给到其中获得纯三恶烷(6)并通过蒸馏除去低锅炉(5)的第二生产设备(B),并将纯三恶烷(6)进料至 第三生产厂(C),其中其被均聚或共聚以形成聚甲醛均聚物或共聚物(7),其中来自低锅炉除去塔(K 2)的低沸点物流(5)被再循环到进料流中, 提出了第一个生产厂(A)中的反应堆。

    PROCESS FOR PREPARING POLYOXYMETHYLENE HOMOPOLYMERS OR COPOLYMERS BY HOMOPOLYMERIZATION OR COPOLYMERIZATION OF TRIOXANE, STARTING FROM METHANOL
    3.
    发明申请
    PROCESS FOR PREPARING POLYOXYMETHYLENE HOMOPOLYMERS OR COPOLYMERS BY HOMOPOLYMERIZATION OR COPOLYMERIZATION OF TRIOXANE, STARTING FROM METHANOL 失效
    制备聚甲基苯乙烯共聚物或共聚物的方法,由三元共聚物的共聚合或共聚合,从甲醇开始

    公开(公告)号:US20100280195A1

    公开(公告)日:2010-11-04

    申请号:US12747742

    申请日:2008-12-11

    IPC分类号: C08G65/06 C08F2/00

    CPC分类号: C07D323/06 C08G2/10

    摘要: A process for preparing polyoxymethylene homopolymers or copolymers (7) by homopolymerization or copolymerization of trioxane, starting from methanol (1), in which methanol (1) is oxidized in a first reactor in a first production plant (A) to give an aqueous formaldehyde-comprising stream (2) which is fed to a second production plant (B) in which pure trioxane (6) is obtained and removal of low boilers (5) by distillation is carried out and the pure trioxane (6) is fed to a third production plant (C) in which it is homopolymerized or copolymerized to form polyoxymethylene homopolymers or copolymers (7), wherein the low boiler stream (5) from the low boiler removal column (K 2) is recycled to the feed stream into the first reactor in the first production plant (A), is proposed.

    摘要翻译: 从甲醇(1)开始,通过三恶烷的均聚或共聚制备聚甲醛均聚物或共聚物(7)的方法,其中甲醇(1)在第一生产设备(A)中的第一反应器中被氧化,得到甲醛水溶液 (2),其被供给到其中获得纯三恶烷(6)并通过蒸馏除去低锅炉(5)的第二生产设备(B),并将纯三恶烷(6)进料至 第三生产厂(C),其中其被均聚或共聚以形成聚甲醛均聚物或共聚物(7),其中来自低锅炉除去塔(K 2)的低沸点物流(5)被再循环到进料流中, 提出了第一个生产厂(A)中的反应堆。