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    Process for the production of hydrogen peroxide
    1.
    发明授权
    Process for the production of hydrogen peroxide 有权
    过氧化氢生产工艺

    公开(公告)号：US07048905B2

    公开(公告)日：2006-05-23

    申请号：US10343323

    申请日：2001-08-03

    Applicant: Giuseppe Paparatto ,  Franco Rivetti ,  Pietro Andrigo ,  Giordano De Alberti ,  Ugo Romano

    Inventor： Giuseppe Paparatto ,  Franco Rivetti ,  Pietro Andrigo ,  Giordano De Alberti ,  Ugo Romano

    IPC: C01B15/029

    CPC classification number: C01B15/013 ,  C01B15/029

    Abstract: Process for the production of concentrated aqueous solutions of hydrogen peroxide, comprising the following steps: (a) feeding to a reactor containing a catalyst based on palladium and platinum, heterogeneous and maintained in dispersion in a liquid reaction medium: (i) a liquid stream consisting of an alcohol or a mixture of C1–C3 alcohols or a mixture of said alcohols with water containing at least 50% by weight of alcohol, also containing an acid promoter and a halogenated promoter, the alcohol and optionally all or part of the water contained in the stream being recycled from the subsequent phase d); (ii) a gaseous stream containing hydrogen, oxygen and an inert gas, characterized in that the concentration of the hydrogen is less than 4.5% by volume and the concentration of the oxygen is less than 21% by volume, the complement to 100 being an inert gas; (b) removing from the reactor: (iii) a liquid stream consisting of stream (i) and also containing the hydrogen peroxide and water produced by the reaction, characterized in that the concentration of hydrogen peroxide ranges from 2% to 10% by weight; and (iv) a gaseous stream essentially consisting of non-reacted hydrogen and oxygen and the inert gas, (c) optionally adding to (iii) water in such a quantity so that its content is at least equal to that of the final aqueous solution of hydrogen peroxide; (d) sending the stream deriving from (c) to a system consisting of one or more evaporators or distillation columns from which the following are removed: (v) one or more streams containing all the alcohol and possibly water, which are recycled to (a); (vi) a concentrated aqueous solution of H2O2 at a concentration ranging from 15 to 60% by weight; (vii) optionally a stream containing the water fed in excess in (c).

    Abstract translation: 用于生产浓缩过氧化氢水溶液的方法，包括以下步骤：（a）向包含基于钯和铂的催化剂的反应器进料，在液体反应介质中分散均匀并保持分散体：（i）液体流 由醇或C1-C3醇的混合物或所述醇与含有至少50重量％醇的水的混合物组成，还含有酸促进剂和卤化促进剂，醇和任选的全部或部分水 包含在流中从后续阶段d）循环; （ii）含有氢气，氧气和惰性气体的气流，其特征在于氢气的浓度小于4.5体积％，氧气的浓度小于21体积％，补体为100为 惰性气体 （b）从反应器中除去：（iii）由流（i）组成并且还含有过氧化氢和通过反应产生的水组成的液体流，其特征在于，过氧化氢的浓度为2重量％至10重量％ ; 和（iv）基本上由未反应的氢气和氧气以及惰性气体组成的气流，（c）任选地加入（iii）水，使其含量至少等于最终水溶液的含量 的过氧化氢; （d）将从（c）得到的物流送到一个由一个或多个蒸发器或蒸馏塔组成的系统，其中除去以下物质：（v）一个或多个含有所有醇和可能的水的物流，其被再循环到 一个）; （vi）浓度为15至60重量％浓度的H 2 O 2的浓缩水溶液; （vii）任选地包含（c）中过量供给的水的流。

    New process for the preparation of 2-aryl-propionic acids
    2.
    发明授权
    New process for the preparation of 2-aryl-propionic acids 失效
    制备2-芳基酸的新方法

    公开(公告)号：US5089661A

    公开(公告)日：1992-02-18

    申请号：US580363

    申请日：1990-09-10

    Applicant: Federico Maspero ,  Oreste Piccolo ,  Ugo Romano ,  Salvatore Gambino

    Inventor： Federico Maspero ,  Oreste Piccolo ,  Ugo Romano ,  Salvatore Gambino

    IPC: C07C51/02 ,  C25B3/04

    CPC classification number: C25B3/04 ,  C07C51/02

    Abstract: A new process is described for the preparation of a 2-aryl-propionic acid, such as for instance 2-[4-(2-methyl-propyl)phenyl]propionic or 2-(6'-methoxy-2'-naphthyl)propionic acid, through hydrogenation of a complex salt which consists of the mono- and/or di-valent anion of the corresponding 2-hydroxy-2-aryl-propionic acid, a di- or tri-valent metal cation, such as for instance Al(+3), Fe(+3), Zn(+2), or Mg(+2), and optionally other anonic or neutral ligands.This new process is particularly advantageous in that the starting salt can be obtained directly via electrocarboxylation of the corresponding aryl methyl ketone, e.g. 4-(2-methyl-propyl)acetophenone or (6-methoxy-2-naphthyl) methyl ketone, with metal anodes which dissolve during the electrolysis.

    Liquid polymerizable compositions for the production of substitutes for optical glasses
    3.
    发明授权
    Liquid polymerizable compositions for the production of substitutes for optical glasses 失效
    用于生产光学眼镜替代物的液体可聚合组合物

    公开(公告)号：US4835233A

    公开(公告)日：1989-05-30

    申请号：US237664

    申请日：1988-08-25

    Applicant: Fiorenzo Renzi ,  Franco Rivetti ,  Ugo Romano

    Inventor： Fiorenzo Renzi ,  Franco Rivetti ,  Ugo Romano

    IPC: C08F18/00 ,  C08F218/00 ,  C08F290/00 ,  C08F299/02 ,  G02B1/04

    CPC classification number: C08F218/00 ,  G02B1/04

    Abstract: A liquid, fluid composition, comprising:(a) bis(allylcarbonate) of monomer diethylene glycol;(b) bis(allylcarbonate) of oligomer diethylene glycol;(c) tris(allylcarbonate) of monomer tris(hydroxyethyl)isocyanurate;(d) a monofunctional, unsaturated vinyl or methacryl ester monomer,is polymerized inside a mould (casting process), with fast polymerization cycle, to yield optical articles.

    Abstract translation: 一种液体流体组合物，其包含：（a）单体二甘醇的双（烯丙基碳酸酯）; （b）低聚物二甘醇二（烯丙基碳酸酯）; （c）单体三（羟乙基）异氰脲酸酯的三（碳酸烯丙酯） （d）单官能的，不饱和的乙烯基或甲基丙烯酸酯单体在模具（铸造工艺）内聚合，具有快速的聚合循环，以产生光学制品。

    Process for synthesizing allyl carbonates by polyhydric alcohols and their derivatives
    5.
    发明授权
    Process for synthesizing allyl carbonates by polyhydric alcohols and their derivatives 失效
    通过多元醇及其衍生物合成碳酸烯丙酯的方法

    公开(公告)号：US4623705A

    公开(公告)日：1986-11-18

    申请号：US694266

    申请日：1985-01-24

    Applicant: Ugo Romano ,  Giuseppe Iori

    Inventor： Ugo Romano ,  Giuseppe Iori

    IPC: C07C69/96 ,  C07C68/06 ,  C08F18/00 ,  C08F18/24 ,  C08F2/00

    CPC classification number: C07C68/06

    Abstract: The application relates to a process for synthesizing carbonic allyl esters from polyhydric alcohols, which are reacted with diallyl carbonate in the presence of a basic catalyst, which can be chosen from sodium hydroxide, sodium carbonate, sodium alcoholate, organic bases or basic ion exchange resins.The final products obtained differ according to the ratio of the components of the starting mixture. Thus, in the case of diols with a diallyl carbonate/diol ratio greater than or equal to 10, the resultant product is constituted by the bis allyl carbonate of the diol together with a quantity of less than or equal to 10% of oligomers represented mainly by dimers. If the ratio is less than 10, the percentage of oligomers rises until, in the case of an approximately stoichiometric ratio, it reaches a value close to 70% of the reaction product.

    Process for synthesizing allyl carbonates of polyhydric alcohols and their derivatives
    7.
    发明授权
    Process for synthesizing allyl carbonates of polyhydric alcohols and their derivatives 失效
    合成多元醇及其衍生物的碳酸烯丙酯的方法

    公开(公告)号：US4508656A

    公开(公告)日：1985-04-02

    申请号：US374331

    申请日：1982-05-03

    Applicant: Ugo Romano ,  Giuseppe Iori

    Inventor： Ugo Romano ,  Giuseppe Iori

    IPC: C07C69/96 ,  C07C68/06 ,  C08F18/00

    CPC classification number: C07C68/06

    Abstract: The application relates to a process for synthesizing carbonic allyl esters from polyhydric alcohols, which are reacted with diallyl carbonate in the presence of a basic catalyst, which can be chosen from sodium hydroxide, sodium carbonate, sodium alcoholate, organic bases or basic ion exchange resins.The final products obtained differ according to the ratio of the components of the starting mixture. Thus, in the case of diols with a diallyl carbonate/diol ratio greater than or equal to 10, the resultant product is constituted by the bis allyl carbonate of the diol together with a quantity of less than or equal to 10% of oligomers represented mainly by dimers. If the ratio is less than 10, the percentage of oligomers rises until, in the case of an approximately stoichiometric ratio, it reaches a value close to 70% of the reaction product.

    Abstract translation: 本申请涉及在碱性催化剂存在下与多烯醇合成碳酸烯丙酯的方法，该碱性催化剂可以选自氢氧化钠，碳酸钠，醇钠，有机碱或碱式离子交换树脂 。 获得的最终产品根据起始混合物的组分的比例而不同。 因此，在二烯丙基碳酸酯/二醇比大于或等于10的二醇的情况下，所得产物由二醇的双碳酸烯丙酯和少于或等于10％的主要代表的低聚物的量构成 二聚体。 如果该比例小于10，则低聚物的百分数上升直到在大约化学计量比的情况下达到接近70％反应产物的值。

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