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    H.sub.2 O.sub.2 /alkaline bleaching of wood pulps
    24.
    发明授权
    H.sub.2 O.sub.2 /alkaline bleaching of wood pulps 失效
    H2O2 /碱性漂白木浆

    公开(公告)号：US5296100A

    公开(公告)日：1994-03-22

    申请号：US693800

    申请日：1991-04-30

    Applicant: Michel Devic

    Inventor： Michel Devic

    IPC: D21C9/16

    CPC classification number: D21C9/163

    Abstract: High-yield lignocellulosic wood pulps are bleached by (i) first pretreating such pulp with a complexing agent for metal ions and next washing the pretreated pulp, and then (ii) bleaching such pretreated/washed pulp with an initial amount of hydrogen peroxide in an alkaline medium, including adding a supplementary bleaching amount of hydrogen peroxide and a supplementary amount of an alkaline agent to the pulp over the course of the bleaching step (ii) without interrupting same, at a point in time when from 60% to 85% of the initial amount of hydrogen peroxide has been consumed, and such supplementary amount of hydrogen peroxide being equal to or less than the initial amount thereof.

    Abstract translation: （i）首先用金属离子的络合剂预处理这种纸浆并接着洗涤预处理的纸浆，然后（ii）用初始量的过氧化氢漂白这样的预处理/洗涤的纸浆，将漂白的高产木质纤维素木纸浆在 碱性介质，包括在漂白步骤（ii）的过程中向纸浆中添加辅助漂白量的过氧化氢和补充量的碱剂，而不中断其在60％至85％的 过氧化氢的初始量已被消耗，并且这种补充量的过氧化氢等于或小于其初始量。

    Method of peroxide bleaching of pulp pretreated with a sequestering agent then with a sulphite and reducing agent
    25.
    发明授权
    Method of peroxide bleaching of pulp pretreated with a sequestering agent then with a sulphite and reducing agent 失效
    用氨基酸和还原剂代替氨基酸的预处理浆液过氧化物的方法

    公开(公告)号：US5143581A

    公开(公告)日：1992-09-01

    申请号：US665531

    申请日：1991-03-06

    Applicant: Michel Devic

    Inventor： Michel Devic

    IPC: D21C9/10 ,  D21C9/16

    CPC classification number: D21C9/1042 ,  D21C9/1057 ,  D21C9/1084 ,  D21C9/163

    Abstract: A process for the manufacture of high-yield pulps bleached with the aid of hydrogen peroxide in alkaline medium, which consists in subjecting the pulp to be bleached successively to:(a) a pretreatment with the aid of a sequestering agent for metal ions, followed by a washing operation,(b) a treatment with sulphite and a reducing agent which is more electronegative than the sulphite ion, which act together and in a medium of initial pH between 7 and 12.5, followed by a washing operation to remove the sulphite ions and the reducing agent, and(c) to a bleaching treatment with the aid of hydrogen peroxide in alkaline medium in the presence of a quantity of silicate of between 0% and 1%.

    Abstract translation: 制造在碱性介质中借助于过氧化氢漂白的高产量纸浆的方法，该方法包括：将纸浆依次漂白：（a）借助于金属离子的螯合剂进行预处理，随后 通过洗涤操作，（b）用亚硫酸盐和还原剂进行处理，所述亚硫酸盐和还原剂比亚硫酸盐离子更负电性，所述亚硫酸盐离子一起起作用，并且在初始pH在7和12.5之间的介质中，然后进行洗涤操作以除去亚硫酸盐离子 和还原剂，以及（c）在碱性介质中，在0％至1％的硅酸盐存在下，借助过氧化氢进行漂白处理。

    Bleaching of vegetable pulps
    26.
    发明授权
    Bleaching of vegetable pulps 失效
    蔬菜浆的漂白

    公开(公告)号：US5094866A

    公开(公告)日：1992-03-10

    申请号：US533516

    申请日：1990-06-05

    Applicant: Michel Devic

    Inventor： Michel Devic

    IPC: A23L1/308 ,  A23B7/06 ,  A23K1/14 ,  A23L1/214 ,  A23L1/227 ,  A23L1/277

    CPC classification number: A23L5/49 ,  A23L19/10

    Abstract: Extracted vegetable pulps are bleached to a high degree of whiteness, thus rendering them more attractive as food supplements, by (a) treating such pulp in an acid medium at a pH of up to 2.5 and for a period of time of at least 10 minutes, (b) next washing the pulp thus treated to an efficiency of at least 80%, and (c) then reacting the washed pulp with an aqueous alkaline solution of hydrogen peroxide, in the presence of an H.sub.2 O.sub.2 stabilizer.

    Abstract translation: 提取的植物纸浆被漂白至高度的白度，因此通过（a）在酸性介质中处理至多2.5的pH并持续至少10分钟的时间，使它们作为食品添加剂更有吸引力 ，（b）接下来洗涤如此处理的纸浆至少80％的效率，和（c）然后在H 2 O 2稳定剂的存在下使洗涤的纸浆与过氧化氢的碱性水溶液反应。

    Process for the preparation of fluorinated compounds
    28.
    发明授权
    Process for the preparation of fluorinated compounds 有权
    氟化合物的制备方法

    公开(公告)号：US09255047B2

    公开(公告)日：2016-02-09

    申请号：US12602707

    申请日：2009-08-19

    Applicant: Anne Pigamo ,  Michel Devic ,  Laurent Wendlinger

    Inventor： Anne Pigamo ,  Michel Devic ,  Laurent Wendlinger

    IPC: C07C17/354 ,  C07C17/25 ,  C07C21/18

    CPC classification number: C07C17/25 ,  C07C17/354 ,  C07C21/18 ,  Y02P20/582 ,  C07C19/08

    Abstract: A subject-matter of the invention is a process for the preparation of 2,3,3,3-tetrafluoro-1-propene which comprises the following stages: (i) hydrogenation of hexafluoropropylene to give 1,1,1,2,3,3-hexafluoropropane; (ii) dehydrofluorination of the 1,1,1,2,3,3-hexafluoropropane obtained in the preceding stage to give 1,2,3,3,3-pentafluoro-1-propene; (iii) hydrogenation of the 1,2,3,3,3-pentafluoro-1-propene obtained in the preceding stage to give 1,1,1,2,3-pentafluoropropane; and (iv) dehydrofluorination of the 1,1,1,2,3-pentafluoropropane obtained in the preceding stage to give 2,3,3,3-tetrafluoro-1-propene. Stages (ii) and (iv) are carried out using a water and potassium hydroxide mixture with the potassium hydroxide representing between 58 and 86% by weight of the mixture and at a temperature of between 110 and 180° C.

    Abstract translation: 本发明的主题是制备2,3,3,3-四氟-1-丙烯的方法，其包括以下步骤：（i）六氟丙烯的氢化，得到1,1,1,2,3 ，3-六氟丙烷; （ii）前段得到的1,1,1,2,3,3-六氟丙烷的脱氟化氢，得到1,2,3,3,3-五氟-1-丙烯; （iii）在前一阶段获得的1,2,3,3,3-五氟-1-丙烯的氢化，得到1,1,1,2,3-五氟丙烷; 和（iv）前一阶段获得的1,1,1,2,3-五氟丙烷的脱氟化氢，得到2,3,3,3-四氟-1-丙烯。 阶段（ii）和（iv）使用氢氧化钾与氢氧化钾混合物进行，其中氢氧化钾占混合物重量的58-86％，在110-180℃的温度下进行。

    Method for preparing fluorine compounds
    30.
    发明授权
    Method for preparing fluorine compounds 有权
    氟化合物的制备方法

    公开(公告)号：US08779217B2

    公开(公告)日：2014-07-15

    申请号：US13382574

    申请日：2010-05-21

    Applicant: Michel Devic ,  Nicolas Doucet ,  Laurent Wendlinger ,  Geraldine Cavallini ,  Pierre-Marie Sedat ,  Karine Avril

    Inventor： Michel Devic ,  Nicolas Doucet ,  Laurent Wendlinger ,  Geraldine Cavallini ,  Pierre-Marie Sedat ,  Karine Avril

    IPC: C07C17/25 ,  C07C17/354

    CPC classification number: C07C17/25 ,  C07C17/354 ,  C07C21/18 ,  C07C19/08

    Abstract: The invention relates to a method for preparing fluoropropenes of formula (I) CF3CF═CHR, where R is a hydrogen or a fluorine atom from at least one compound of formula (Ia) CF3CF═CFR, where R has the same meaning as in formula (I), said method including the following steps: (i) hydrogenating at least one compound of formula (Ia) in an adiabatic reactor in the presence of a catalyst with a superstoichiometric amount of hydrogen so as to produce a hydrofluoropropane; (ii) partially condensing the flow from the adiabatic reactor of step (i) so as to produce a gaseous phase fraction, including unreacted hydrogen and a portion of the formed hydrofluoropropane, which is recirculated to step (i), and a liquid phase fraction including the residue of the hydrofluoropropane; (iii) dehydrofluorinating hydrofluoropropane from the liquid fraction of step (ii) using potassium hydroxide in an aqueous reaction medium contained in an agitated reactor so as to produce the fluoropropene of formula (I); and (iv) purifying the fluoropropene obtained in step (iii).

    Abstract translation: 本发明涉及一种制备式（I）CF 3 CF = CHR的氟丙烯的方法，其中R是至少一种式（Ia）CF 3 CF = CFR的化合物的氢或氟原子，其中R的定义与式 （I），所述方法包括以下步骤：（i）在具有超化学计量的氢的催化剂存在下，在绝热反应器中氢化至少一种式（Ia）化合物以产生氢氟丙烷; （ii）部分地冷凝来自步骤（i）的绝热反应器的流，以便产生气相馏分，包括未反应的氢气和一部分所形成的氢氟丙烷，其循环至步骤（i），以及液相馏分 包括氢氟丙烷的残留物; （iii）使用氢氧化钾在搅拌反应器中的含水反应介质中，从步骤（ii）的液体馏分中脱氢氟化氢氟丙烷，以制备式（I）的氟丙烯; 和（iv）纯化步骤（iii）中获得的氟丙烯。

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