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    FLAME RETARDANT TREATED FABRICS WITH LOW FORMALDEHYDE CONTENT
    2.
    发明申请
    FLAME RETARDANT TREATED FABRICS WITH LOW FORMALDEHYDE CONTENT 审中-公开

    公开(公告)号：US20190242056A1

    公开(公告)日：2019-08-08

    申请号：US16329774

    申请日：2016-09-01

    Applicant: RHODIA OPERATIONS

    Inventor： Gary WOODWARD ,  Geoffrey HAND ,  Robert HICKLIN ,  Matthew SEABROOK

    IPC: D06M15/285 ,  D06M15/431

    CPC classification number: D06M15/285 ,  D06M15/431 ,  D06M2200/30

    Abstract: The instant invention relates to a textile article comprising a flame-retardant treated fabric including an oxidized polymer obtained from an ammonia curing of a condensate of (i) a tetrakis (hydroxyorgano) phosphonium salt; and (ii) urea or thiourea; followed by an oxidation into phosphine oxide groups of at least one part of the phosphonium groups present on the cured condensate, wherein said flame-retardant treated fabric: —is intended to be used as a stable substrate in which the formation of formaldehyde over the time is inhibited; and —contains less than 1% by weight of phosphorus present in phosphonium groups, based on the total weight of the flame-retardant treated fabric.

    PREPARATION OF PURIFIED PHOSPHORODIAMIDITE
    7.
    发明申请
    PREPARATION OF PURIFIED PHOSPHORODIAMIDITE 有权
    纯化磷酸二钙的制备

    公开(公告)号：US20160333034A1

    公开(公告)日：2016-11-17

    申请号：US15110971

    申请日：2015-01-15

    Applicant: RHODIA OPERATIONS

    Inventor： Gary WOODWARD

    IPC: C07F9/24

    CPC classification number: C07F9/2412 ,  C07F9/2408 ,  C07F9/2458

    Abstract: The instant invention relates to a method of phosphorodiamidite production that comprises: (E1) preparing a purified solution of a dialkylamine in a polar solvent as follows:—the dialkylamine dissolved in a polar solvent is contacted with a quantity of phosphorus trihalide that is sufficient to react with the alcohol impurities contained in the dialkylamine but sufficiently low to leave a major part of the dialkylamine unreacted, whereby a mixture is obtained that contains the dialkylamine in the polar solvent and reaction products of the impurities with the phosphorous trihalide;—the unreacted dialkylamine and polar solvent present in the mixture obtained in step (E1.1.) are extracted from the solution S by their difference of volatility, typically by distillation, whereby the purified solution of the dialkylamine in the polar solvent is obtained; (E2) the purified solution of dialkylamine in a polar solvent as obtained in step (E1) is reacted with a phosphorus trihalide, whereby an intermediate compound is formed; (E3) the intermediate compound obtained in step (E2) is reacted with a hydroxyalkyl compound in the presence of a non-polar co-solvent.

    Abstract translation: 本发明涉及一种磷二亚胺生产方法，其包括：（E1）如下制备极性溶剂中的二烷基胺纯化溶液： - 将溶解在极性溶剂中的二烷基胺与一定量的三卤化磷接触， 与二烷基胺中所含的醇杂质反应，但足够低以留下未反应的二烷基胺的主要部分，由此得到在极性溶剂中含有二烷基胺的混合物和杂质与三卤化磷的反应产物; - 未反应的二烷基胺 通过挥发性的差异从溶液S中提取存在于步骤（E1.1。）中获得的混合物中的极性溶剂，通常通过蒸馏提取，得到二烷基胺在极性溶剂中的纯化溶液; （E2）将步骤（E1）中得到的极性溶剂中的二烷基胺的纯化溶液与三卤化磷反应，形成中间体化合物; （E3）中，将步骤（E2）中得到的中间体化合物与羟烷基化合物在非极性助溶剂的存在下反应。

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