中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

55 records (took 0.013 seconds)

    Bleaching of deinked paper/wood pulp
    11.
    发明授权
    Bleaching of deinked paper/wood pulp 失效
    脱墨纸/木浆漂白

    公开(公告)号：US5449436A

    公开(公告)日：1995-09-12

    申请号：US26215

    申请日：1993-03-01

    Applicant: Lucien Bourson ,  Michel Devic

    Inventor： Lucien Bourson ,  Michel Devic

    IPC: D21C5/02 ,  D21C9/10 ,  D21C9/16

    CPC classification number: D21C5/025 ,  D21C9/1057 ,  D21C9/1084 ,  Y02W30/648

    Abstract: Deinked paper/wood pulps are improvedly bleached to high levels of whiteness by conjointly treating such pulps with a sulfite bleaching agent, e.g., Na.sub.2 SO.sub.3, NaHSO.sub.3 or mixture thereof, or SO.sub.2 and NaOH, and a reducing agent more electronegative than the sulfite ion, e.g., thiourea dioxide, sodium borohydride or sodium dithionite, in a reaction medium having an initial pH ranging from 6 to 12, advantageously followed by washing sulfite and reducing agent values from the bleached pulp and then treating the washed pulp with hydrogen peroxide in an aqueous alkaline medium.

    Abstract translation: 通过用亚硫酸盐漂白剂（例如Na 2 SO 3，NaHSO 3或其混合物）或SO 2和NaOH联合处理这种纸浆，以及比亚硫酸盐离子更具电负性的还原剂，将脱墨的纸/木纸浆漂白至高白度。 ，二氧化硫脲，硼氢化钠或连二亚硫酸钠，在初始pH范围为6至12的反应介质中，有利地随后从漂白的纸浆中洗涤亚硫酸盐和还原剂值，然后用碱性水溶液中的过氧化氢处理洗涤过的纸浆 中。

    Synthesis of acyl cyanides in an anhydrous reaction medium
    13.
    发明授权
    Synthesis of acyl cyanides in an anhydrous reaction medium 失效
    在无水反应介质中合成酰基氰

    公开(公告)号：US5352826A

    公开(公告)日：1994-10-04

    申请号：US35879

    申请日：1993-03-23

    Applicant: Michel Devic ,  Pierre Tellier

    Inventor： Michel Devic ,  Pierre Tellier

    IPC: C07C253/14 ,  C07C255/18

    CPC classification number: C07C253/14

    Abstract: The acyl cyanides (nitriles), notably benzoyl cyanide, are prepared by reacting an acid halide with an alkali metal cyanide, in an anhydrous solvent medium, in the presence of an alkylene oxide compound and a polar compound other than water, e.g., glycerol, ethylene glycol, formamide or a sugar derivative.

    Abstract translation: 酰基氰化物（腈），特别是苯甲酰氰，通过酰卤与碱金属氰化物在无水溶剂介质中，在环氧烷化合物和除水之外的极性化合物（例如甘油）存在下制备， 乙二醇，甲酰胺或糖衍生物。

    Preparation of bleached chemithermomechanical pulp
    14.
    发明授权
    Preparation of bleached chemithermomechanical pulp 失效
    漂白巧克力纸浆的制备

    公开(公告)号：US5298118A

    公开(公告)日：1994-03-29

    申请号：US919389

    申请日：1992-07-29

    Applicant: Michel Devic

    Inventor： Michel Devic

    IPC: D21C3/06 ,  D21C9/16 ,  D21C1/06

    CPC classification number: D21C9/163 ,  D21C3/06

    Abstract: Bleached chemithermomechanical wood pulp having a high degree of whiteness is economically prepared by mechanically disintegrating and chemically digesting lignocellulosic material with sulfite at a temperature of at least 100.degree.C. under saturated water vapor pressure and thereafter bleaching the pulp thus treated with hydrogen peroxide in an alkaline medium, and wherein no solids or liquids are removed from the pulp from the outset of treatment through completion of the bleaching step.

    Abstract translation: 通过在至少100℃的温度下用亚硫酸盐机械分解和化学消化木质纤维素材料，经济地制备了具有高白度漂白的巧克力机械木浆。 在饱和水蒸气压下，然后漂白在碱性介质中用过氧化氢处理的纸浆，并且其中没有固体或液体从处理开始通过漂白步骤从纸浆中除去。

    Removal of peroxide values from bleached/dried vegetable matter
    15.
    发明授权
    Removal of peroxide values from bleached/dried vegetable matter 失效
    从漂白/干燥的蔬菜中除去过氧化值

    公开(公告)号：US5124171A

    公开(公告)日：1992-06-23

    申请号：US678058

    申请日：1991-04-01

    Applicant: Michel Devic

    Inventor： Michel Devic

    IPC: A23L1/015 ,  A23L1/10 ,  A23L1/214 ,  A23L1/277 ,  A23L1/308

    CPC classification number: A23L33/22 ,  A23L19/10 ,  A23L5/21 ,  A23L5/49 ,  A23L7/115

    Abstract: The amount of peroxide contaminants in H.sub.2 O.sub.2 bleached/dried vegetable material is reduced to a value on the order of less than about 1%, even approaching nil, by heat-treating such bleached/dried vegetable material at a temperature of at least 60.degree. C. in a confined atmosphere such that its amount by weight of water remains essentially the same during the heat-treatment.

    Abstract translation: 通过在至少60℃的温度下对这种漂白/干燥的植物材料进行热处理，将H 2 O 2漂白/干燥的植物材料中的过氧化物污染物的量减少到小于约1％的数量级甚至接近零的值 在密闭的气氛中，使其在热处理过程中水的重量含量基本相同。

    Process for the decomposition of a complex of orthobenzoyl-benzoic acid, hydrogen fluoride and boron trifluoride
    16.
    发明授权
    Process for the decomposition of a complex of orthobenzoyl-benzoic acid, hydrogen fluoride and boron trifluoride 失效
    正苯甲酰 - 苯甲酸，氟化氢和三氟化硼的络合物的分解方法

    公开(公告)号：US4591460A

    公开(公告)日：1986-05-27

    申请号：US590861

    申请日：1984-03-19

    Applicant: Michel Devic

    Inventor： Michel Devic

    IPC: C07C45/00 ,  C07C46/00 ,  C07C50/18 ,  C07C67/00

    CPC classification number: C07C46/00 ,  Y02P20/584

    Abstract: Process for the decomposition of complexes of orthobenzoyl-benzoic acid, hydrogen fluoride, and boron trifluoride in which the complex is subjected to the action of sulfuric acid in a concentration of at least about 96% by weight or to the action of an oleum, under atmospheric pressure or under a pressure lower than atmospheric pressure.

    Abstract translation: 分解正苯甲酰基 - 苯甲酸，氟化氢和三氟化硼的络合物的方法，其中络合物以至少约96重量％的浓度的硫酸或作为发烟硫酸的作用进行， 大气压力或低于大气压的压力。

    Coated reactors, production method thereof and use of same
    18.
    发明授权
    Coated reactors, production method thereof and use of same 有权
    涂层反应器及其制造方法及其应用

    公开(公告)号：US08062606B2

    公开(公告)日：2011-11-22

    申请号：US12513412

    申请日：2007-11-06

    Applicant: Michel Devic

    Inventor： Michel Devic

    IPC: B01J19/02

    CPC classification number: B01J19/02 ,  B01J2219/0245 ,  B82Y30/00 ,  C07B39/00 ,  C07C17/21 ,  C07C19/12

    Abstract: The invention relates to coated reactors resistant to acid corrosion, the production method thereof and the use of same in processes in superacid media. More specifically, the invention relates to a reactor comprising an inner metal wall having a fluoropolymer coating anchored thereto using a perforated sheet positioned between the inner metal wall and the fluoropolymer coating. The surface of the sheet that is in contact with the metal wall of the reactor has a sufficient roughness in order to form a free space (for gases) between same and the metal wall of the reactor. In addition, the reactor is provided with a device for maintaining the pressure in the free space below that in the reactor.

    Abstract translation: 本发明涉及耐酸腐蚀的涂层反应器，其制备方法及其在超强酸介质中的应用。 更具体地说，本发明涉及一种反应器，其包括使用位于内金属壁和含氟聚合物涂层之间的穿孔片将锚固于其上的含氟聚合物涂层的内金属壁。 与反应器的金属壁接触的片材的表面具有足够的粗糙度，以在其与反应器的金属壁之间形成自由空间（用于气体）。 此外，反应器设置有用于将自由空间中的压力维持在反应器内的压力的装置。

    PROCESS FOR THE PREPARATION OF FLUOROOLEFIN COMPOUNDS
    19.
    发明申请
    PROCESS FOR THE PREPARATION OF FLUOROOLEFIN COMPOUNDS 有权
    氟橡胶化合物的制备方法

    公开(公告)号：US20110201852A1

    公开(公告)日：2011-08-18

    申请号：US12602705

    申请日：2009-08-18

    Applicant: Anne Pigamo ,  Michel Devic ,  Laurent Wendlinger

    Inventor： Anne Pigamo ,  Michel Devic ,  Laurent Wendlinger

    IPC: C07C17/25 ,  C07C17/38

    CPC classification number: C07C17/25 ,  C07C21/18

    Abstract: A subject-matter of the invention is a process for the preparation of fluoroolefin compounds. It relates more particularly to a process for the manufacture of a compound of formula (I) CF3—CF=CHX in which X represents a hydrogen or fluorine atom, comprising at least one stage of dehydrofluorination of a compound of formula (II) CF3—CHF—CHFX during which the compound of formula (II) is brought into contact with a mixture composed of water and of potassium hydroxide in which the potassium hydroxide is present in an amount of between 58 and 86% by weight.

    Abstract translation: 本发明的主题是制备氟烯烃化合物的方法。 更具体地涉及制备式（I）化合物的方法，其中X表示氢或氟原子，包括式（II）化合物的至少一个脱氟化氢阶段CF 3 - CHF-CHFX，其中使式（II）化合物与由氢和氢氧化钾组成的混合物接触，其中氢氧化钾的存在量为58至86重量％。

Patent Agency Ranking