PURIFICATION OF MONOMER FROM RECYCLE POLYESTERS
    2.
    发明公开
    PURIFICATION OF MONOMER FROM RECYCLE POLYESTERS 审中-公开
    新加坡冯·蒙哥蕊AUSRÜCKFÜHRONGSPOLYESTERN

    公开(公告)号:EP3169725A1

    公开(公告)日:2017-05-24

    申请号:EP15821898.2

    申请日:2015-02-10

    IPC分类号: C08J11/10 C08J11/08 C08G2/36

    摘要: A method of recycling bis(hydroxyalkyl) terephthalate monomer from a composition comprising a terephthalate-containing polymer includes depolymerizing the terephthalate-containing polymer to provide the bis(hydroxyalkyl) terephthalate; and separating the bis(hydroxyalkyl) terephthalate from the composition comprising the depolymerized terephthalate-containing polymer by continuous multi-column liquid chromatography.

    摘要翻译: 从包含对苯二甲酸酯的聚合物的组合物中回收双(羟烷基)对苯二甲酸酯单体的方法包括使含对苯二甲酸酯的聚合物解聚以提供对苯二甲酸双(羟烷基)酯; 并通过连续多柱液相色谱从包含解聚对苯二甲酸酯的聚合物的组合物中分离出双(羟烷基)对苯二甲酸酯。

    PROCESS FOR THE PRODUCTION OF TRIOXANE
    7.
    发明公开
    PROCESS FOR THE PRODUCTION OF TRIOXANE 审中-公开
    VERFAHREN ZUR HERSTELLUNG VON TRIOXAN

    公开(公告)号:EP2782905A1

    公开(公告)日:2014-10-01

    申请号:EP12788600.0

    申请日:2012-11-23

    申请人: Ticona GmbH

    IPC分类号: C07D323/06 C08G2/36

    摘要: The present invention relates to a process for producing cyclic acetal comprising i) preparing a liquid reaction mixture comprising a) a formaldehyde source, b) an aprotic compound and c) a catalyst; wherein the total amount of protic compounds is less than 40 wt.-%, based on the total weight of the reaction mixture; and ii) converting the formaldehyde source into cyclic acetals.

    摘要翻译: 本发明涉及一种制备环状缩醛的方法,其包括:i)制备液体反应混合物,其包含a)甲醛源,b)非质子化合物和c)催化剂; 其中基于反应混合物的总重量,质子化合物的总量小于40重量%; 和ii)将甲醛源转化为环状缩醛。