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    Preparation of amphiphilic block polymers by controlled radical micellar polymerisation
    132.
    发明授权
    Preparation of amphiphilic block polymers by controlled radical micellar polymerisation 有权
    通过受控自由基胶束聚合制备两亲嵌段聚合物

    公开(公告)号：US09580535B2

    公开(公告)日：2017-02-28

    申请号：US14353360

    申请日：2012-10-24

    Applicant: RHODIA OPERATIONS

    Inventor： James Wilson ,  Mathias Destarac ,  Arnaud Cadix

    IPC: C08F2/38 ,  C08F297/02 ,  C08F293/00 ,  C09K8/04 ,  C09K8/588 ,  C09K8/88

    CPC classification number: C08F297/026 ,  C08F2/38 ,  C08F293/005 ,  C08F2438/03 ,  C09K8/04 ,  C09K8/588 ,  C09K8/882

    Abstract: The present invention relates to the preparation of block copolymers, which can be used in particular as rheology agents, suitable, inter alia, for oil extraction, comprising a step of radical micellar polymerization wherein the following are brought into contact in an aqueous medium: —hydrophilic monomers, dissolved or dispersed in the aqueous medium; —hydrophobic monomers in the form of a micellar solution, i.e. containing, in a dispersed state, micelles comprising these hydrophobic monomers; —at least one radical polymerization initiator; and —at least one radical polymerization control agent. The polymers obtained according to the invention can be used in particular for enhanced oil recovery (EOR).

    Abstract translation: 嵌段共聚物的制备本发明涉及嵌段共聚物的制备，其可特别用作流变剂，特别适用于油提取，包括自由基胶束聚合步骤，其中使下列物质在水性介质中接触： 溶解或分散在水介质中的亲水单体; 以胶束溶液形式的疏水单体，即分散状态的包含这些疏水单体的胶束; - 至少一个自由基聚合引发剂; 和至少一种自由基聚合控制剂。 根据本发明获得的聚合物特别可用于增强油回收（EOR）。

    PROCESS FOR THE PREPARATION OF PRECIPITATED SILICAS, PRECIPITATED SILICAS AND THEIR USES, IN PARTICULAR FOR THE REINFORCEMENT OF POLYMERS
    133.
    发明申请
    PROCESS FOR THE PREPARATION OF PRECIPITATED SILICAS, PRECIPITATED SILICAS AND THEIR USES, IN PARTICULAR FOR THE REINFORCEMENT OF POLYMERS 审中-公开
    制备降解硅，沉淀硅和其用途的方法，特别是聚合物增强

    公开(公告)号：US20170051126A1

    公开(公告)日：2017-02-23

    申请号：US15118683

    申请日：2015-02-12

    Applicant: RHODIA OPERATIONS

    Inventor： Cédric BOIVIN ,  Laurent GUY ,  Eric PERIN ,  Kilani LAMIRI

    IPC: C08K3/36 ,  C09C1/30 ,  C01B33/187

    Abstract: The invention relates to a process for the preparation of a novel precipitated silica, wherein: a silicate is reacted with an acidifying agent, so as to obtain a silica suspension; said silica suspension is filtered, so as to obtain a filter cake; said filter cake is subjected to a liquefaction operation, optionally in the presence of an aluminium compound; wherein at least one polycarboxylic acid is added to the filter cake, during or after the liquefaction operation. It also relates to a novel precipitated silica and to its uses.

    Abstract translation: 本发明涉及一种制备新型沉淀二氧化硅的方法，其中：将硅酸盐与酸化剂反应，得到二氧化硅悬浮液; 将所述二氧化硅悬浮液过滤，得到滤饼; 所述滤饼任选在铝化合物存在下进行液化操作; 其中在液化操作期间或之后，将至少一种多元羧酸加入到滤饼中。 它还涉及一种新型沉淀二氧化硅及其用途。

    Process for preparing precipitated silicas
    134.
    发明授权
    Process for preparing precipitated silicas 有权
    沉淀二氧化硅的制备方法

    公开(公告)号：US09550682B2

    公开(公告)日：2017-01-24

    申请号：US14367455

    申请日：2012-12-19

    Applicant: RHODIA OPERATIONS

    Inventor： Malika Clouin ,  Sylvaine Neveu

    IPC: C01B33/12 ,  C01B33/193

    CPC classification number: C01B33/128 ,  C01B33/193

    Abstract: A silica production method comprising reacting a silicate with at least one acid, in which the acid used in at least one of the steps of the production method is a concentrated acid, preferably selected from the group consisting of sulfuric acid having a concentration of at least 80% by weight, in particular at least 90% by weight, acetic acid having a concentration of at least 90% by weight, formic acid having a concentration of at least 90% by weight, nitric acid having a concentration of at least 60% by weight, phosphoric acid having a concentration of at least 75% by weight, and hydrochloric acid having a concentration of at least 30% by weight.

    Abstract translation: 一种二氧化硅生产方法，包括使硅酸盐与至少一种酸反应，其中在制备方法的至少一个步骤中使用的酸是浓酸，优选选自浓度至少为的硫酸 80重量％，特别是至少90重量％，浓度为至少90重量％的乙酸，浓度为至少90重量％的甲酸，浓度为至少60重量％的硝酸， 的浓度为至少75重量％的磷酸和浓度为至少30重量％的盐酸。

    PREPARATION OF PURIFIED PHOSPHORODIAMIDITE
    138.
    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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