Process for producing oxamide granules
    1.
    发明授权
    Process for producing oxamide granules 失效
    生产牛磺酸颗粒的方法

    公开(公告)号:US5393319A

    公开(公告)日:1995-02-28

    申请号:US88804

    申请日:1993-07-08

    CPC classification number: C07C231/02

    Abstract: Oxamide granules are produced by (A) feed-mixing ammonia to a starting material comprising 60 to 100 weight % of a diester of oxalic acid with a C.sub.1-6 aliphatic alcohol, and 0 to 40 weight % of the same aliphatic alcohol as mentioned above, to produce oxamide and the aliphatic alcohol as by-product, while controlling the aliphatic alcohol content to 5 to 40% based on the weight of the reaction mixture to provide the resultant oxamide wetted by the aliphatic alcohol; (B) granulating the wetted product while maintaining the content of the aliphatic alcohol at a level of 5 to 40% based on the weight of the wetted reaction product; (C) heat-evaporating away the aliphatic alcohol from the wetted granules; and optionally (D) re-wetting the resultant dry oxamide granules with water in an amount of 5 to 20% based on the weight of the dry oxamide granules; and (E) re-drying the re-wetted oxamide granules, to provide oxamide granules having an enhanced mechanical strength and form-stability in water.

    Abstract translation: 氧化酰胺颗粒是通过(A)将氨进料到包含60至100重量%的草酸二酯与C 1-6脂族醇的原料和0至40重量%的如上所述的相同脂族醇的原料中 以产生草酰胺和脂族醇作为副产物,同时基于反应混合物的重量将脂族醇含量控制在5至40%,以提供由脂族醇润湿的所得酰胺; (B)将润湿的产品制粒,同时将脂肪醇的含量维持在湿润反应产物重量的5-40%的水平; (C)从润湿的颗粒中蒸发掉脂族醇; 和任选地(D)以干燥的氧杂胺颗粒的重量为基准的5-20%的水重新润湿所得的干燥氧化胺颗粒; 和(E)重新干燥再润湿的草酰胺颗粒,以提供具有增强的机械强度和水中形式稳定性的氧化胺颗粒。

    Processes for producing porous polymer films and composite films
    3.
    发明授权
    Processes for producing porous polymer films and composite films 失效
    生产多孔聚合物膜和复合膜的方法

    公开(公告)号:US5238636A

    公开(公告)日:1993-08-24

    申请号:US769169

    申请日:1991-09-30

    CPC classification number: C08J9/28 C08J2201/05 C08J2201/0542

    Abstract: A process for forming a porous polymer film formed by allowing a solvent to evaporate from a solution of polymer containing water and alcohol. It is possible to form a porous polymer film in which the size and distribution of the pores are uniformalized. Also described is a process for producing a composite film in which the pores of the porous polymer film are filled with a functional low molecular substance such as liquid crystal or dye so that the dispersion diameter of the functional low molecular substance and the distribution of the same are uniformalized. In the production of the above-mentioned porous polymer film, the size of the pores on the porous polymer film can be controlled by controlling the humidity of the forming atmosphere or the water content in the solution of polymer. It is therefore possible to obtain a fixed film having superior electrical and optical characteristics, by forming a composite film through filling the pores of the thus obtained porous polymer film with a functional low molecular substance such as liquid crystal or dye and providing electrodes on the composite film.

    Abstract translation: 一种通过使溶剂从含有水和醇的聚合物溶液中蒸发而形成的多孔聚合物膜的方法。 可以形成其中孔的尺寸和分布均匀化的多孔聚合物膜。 还描述了一种制备复合膜的方法,其中多孔聚合物膜的孔填充有诸如液晶或染料的功能性低分子物质,使得官能低分子物质的分散直径及其分布 均匀化。 在上述多孔聚合物膜的制造中,可以通过控制成型气氛的湿度或聚合物溶液中的水含量来控制多孔聚合物膜上的孔的尺寸。 因此,通过用诸如液晶或染料的功能性低分子物质填充由此获得的多孔聚合物膜的孔而形成复合膜,并且在复合材料上提供电极,可以获得具有优异的电气和光学特性的固定膜 电影。

    Preparation of 2,3-dihydro-2-methyl-2,3-dialkyl-7-oxybenzofurans
    4.
    发明授权
    Preparation of 2,3-dihydro-2-methyl-2,3-dialkyl-7-oxybenzofurans 失效
    2,3-二氢-2-甲基-2,3-二烷基-7-氧代苯并呋喃的制备

    公开(公告)号:US4540800A

    公开(公告)日:1985-09-10

    申请号:US484237

    申请日:1983-04-12

    CPC classification number: C07D307/86

    Abstract: A process for the preparation of a 2,3-dihydro-2-methyl-2,3-dialkyl-7-oxybenzofuran having the formula (I): ##STR1## in which R and R' are the same or different and each represents a lower alkyl group or hydrogen atom, which comprises reacting catechol with an aldehyde having the formula (II):(RCH.sub.2)(R')CHCHO (II)or an alcohol having the formula (III):RCH.dbd.C(R')--CH.sub.2 OH (III)in a gaseous phase in the presence of a solid acid catalyst. The products are useful as intermediates in the preparation of insecticides.

    Abstract translation: 制备具有式(I)的2,3-二氢-2-甲基-2,3-二烷基-7-氧代苯并呋喃的方法:其中R和R'相同或不同 并且各自表示低级烷基或氢原子,其包括使儿茶酚与式(II)的醛反应:(RCH 2)(R')CHCHO(II)或具有式(III)的醇:RCH = C( R')-CH 2 OH(III)在气相中在固体酸催化剂存在下反应。 该产品可用作制备杀虫剂的中间体。

    Apparatus and process for generating mixed multi-component vapor

    公开(公告)号:US06512147B2

    公开(公告)日:2003-01-28

    申请号:US10108675

    申请日:2002-03-28

    CPC classification number: C07C41/09 B01D1/0094 B01D1/225 C07C43/23

    Abstract: A mixed liquid of two or more components different in boiling temperature from each other and soluble in or compatible with each other is evaporated into a mixed vapor having a similar composition to that of the mixed liquid by using an apparatus having a thin film evaporator (1) having a feed inlet (1a) and a delivery outlet (1b), while forcedly circulating the non-evaporated portion of the mixed multi-component liquid by withdrawing the non-evaporated mixed liquid portion from the delivery side end portion of the evaporator and returning the mixed liquid portion into the feed side end portion of the evaporator through a circulating line (3), and the resultant mixed multi-component vapor can be used as a mixed material vapor for a gas phase catalytic reaction for producing, for example, a mono and/or a di-alkylether of an aromatic dihydroxy compound.

    Process and apparatus for producing dihydric phenolic compound
    6.
    发明授权
    Process and apparatus for producing dihydric phenolic compound 有权
    二羟基酚类化合物的制备方法和装置

    公开(公告)号:US06262315B1

    公开(公告)日:2001-07-17

    申请号:US09320094

    申请日:1999-05-26

    Abstract: A dihydric phenolic compound is produced, with a high selectivity thereof, by a plurality of oxidation reactors connected to each other in series, by (1) feeding a monohydric phenolic compound with a temperature of 30 to 100° C., a peroxide compound, a catalyst and optionally a ketone compound into a first reactor to oxidize the monohydric phenolic compound, and delivering a resultant reaction mixture containing the produced dihydric phenolic compound and non-reacted monohydric phenolic compound from the first reactor; (2) passing the reaction mixture through one or more reactors succeeding to the first reactor, to further oxidize the monohydric phenolic compound, while, in the steps (1) and (2), a portion of the peroxide compound is fed into the first reactor and the remaining portion of the peroxide compound is fed into at least one succeeding reactor; and (3) delivering a first reaction mixture produced in a rearend reactor and comprising the produced dihydric phenolic compound, the non-reacted monohydric phenolic compound and peroxide compound and the catalyst from the rearend reactor.

    Abstract translation: 通过(1)将温度为30〜100℃的一元酚类化合物,过氧化物化合物,过氧化物化合物, 催化剂和任选的酮化合物转化成第一反应器以氧化一元酚类化合物,并从第一反应器中输送所得的含有所产生的二羟基酚化合物和未反应的一元酚化合物的反应混合物; (2)使反应混合物通过在第一反应器之后的一个或多个反应器,以进一步氧化一元酚类化合物,而在步骤(1)和(2)中,一部分过氧化物被加入第一 将剩余部分的过氧化物进料至至少一个后续反应器; 和(3)在再循环反应器中产生的第一反应混合物,并且包含所产生的二羟基酚化合物,未反应的一元酚类化合物和过氧化物化合物以及来自再循环反应器的催化剂。

    Ion exchange purification method of aqueous caprolactam solution
    7.
    发明授权
    Ion exchange purification method of aqueous caprolactam solution 失效
    己内酰胺水溶液的离子交换纯化方法

    公开(公告)号:US5245029A

    公开(公告)日:1993-09-14

    申请号:US792413

    申请日:1991-11-15

    CPC classification number: C07D201/16

    Abstract: Disclosed is an ion exchange purification method of an aqueous caprolactam solution in a process for producing caprolactam and laurolactam by subjecting a mixture of cyclohexanone oxime and cyclododecanone oxime to Beckmann rearrangement in the presence of sulfuric acid and fuming sulfuric acid, which comprises, after neutralization of the rearrangement reaction products, and first extraction thereof with an organic solvent and second extraction of the first extract with water to obtain a second extract of an aqueous caprolactam solution, treating the aqueous caprolactam solution obtained by extraction with an organic solvent immiscible with water with a strongly acidic cation exchange resin, and subsequently with a weakly basic anion exchange resin or further with a strongly basic anion exchange resin.

    Abstract translation: 公开了在硫酸和发烟硫酸的存在下,使环己酮肟和环十二烷酮肟的混合物进行贝克曼重排以制备己内酰胺和月桂内酰胺的方法中的己内酰胺水溶液的离子交换纯化方法, 重排反应产物,首先用有机溶剂萃取,用水萃取第二提取物,得到第二次己内酰胺水溶液,用与水不混溶的有机溶剂萃取得到的己内酰胺水溶液 强酸性阳离子交换树脂,随后用弱碱性阴离子交换树脂或强碱性阴离子交换树脂。

    Process for producing oxamide
    8.
    发明授权
    Process for producing oxamide 失效
    生产草酰胺的方法

    公开(公告)号:US06348626B1

    公开(公告)日:2002-02-19

    申请号:US08112478

    申请日:1993-08-27

    CPC classification number: C07C233/56 C07C231/02

    Abstract: Oxamide is produced in a high purity by a process comprising (A) melting a starting material comprising 70 to 100 wt % of an oxalic acid diester of an aliphatic alcohol and 0 to 30 wt % of the same aliphatic alcohol as mentioned above, (B) feed-mixing an ammonia-containing gas to the starting material melt, while stirring, to produce oxamide and the aliphatic alcohol (by-product), (C) continuing the ammonia-feed-mixing procedure while controlling a feed rate of ammonia to an extent such that a content of the aliphatic alcohol in the reaction mixture is maintained at a level of 3 to 45% by weight, to produce a wetted solid reaction product comprising the resultant oxamide and the aliphatic alcohol, and then (D) collecting the oxamide from the reaction product by evaporating away the aliphatic alcohol.

    Abstract translation: 通过以下方法制备氧化酰胺,该方法包括(A)熔融含有70-100重量%的脂族醇的草酸二酯和0-30重量%的如上所述的相同脂族醇的原料(B )在搅拌的同时将含氨气体原料混合到原料熔体中,以产生草酰胺和脂族醇(副产物),(C)继续氨进料混合过程,同时控制氨的进料速率 使得反应混合物中的脂肪醇的含量保持在3〜45重量%的水平的程度,以制备包含所得的酰胺和脂族醇的润湿的固体反应产物,然后(D)收集 通过蒸发掉脂族醇从反应产物中加入草酰胺。

    Process for preparing high purity hydrogen peroxide aqueous solution
    9.
    发明授权
    Process for preparing high purity hydrogen peroxide aqueous solution 失效
    制备高纯度过氧化氢水溶液的方法

    公开(公告)号:US5670028A

    公开(公告)日:1997-09-23

    申请号:US558724

    申请日:1995-11-16

    CPC classification number: C01B15/013 B01D3/14 B01D3/32 Y10S159/15 Y10S203/20

    Abstract: A process for preparing a high purity H.sub.2 O.sub.2 aqueous solution, which comprises the steps of: (a) feeding a crude H.sub.2 O.sub.2 aqueous solution containing H.sub.2 O.sub.2, organic carbon impurities and inorganic impurities into a distillation column having an inner wall at least the surface of which is made of a fluorine resin and internals and packings at least the surface of which are made of a fluorine resin being provided internally of the distillation column, from a bottom portion of the distillation column; (b) subjecting the crude hydrogen peroxide aqueous solution to distillation under reduced pressure and under heating the bottom portion; (c) taking out a distillate containing an extremely low concentration of H.sub.2 O.sub.2 from a top portion of the distillation column without using the distillate for reflux in a distillation operation, and feeding ultra pure water in an amount satisfying (an amount of ultra pure water fed into column top)/((an amount of column top distillate)--(an amount of ultra pure water fed into column top)) being 0.1 to 20 into the top portion of the distillation column; and (d) taking out a H.sub.2 O.sub.2 aqueous solution having a high purity from a middle portion of the distillation column, simultaneously or successively.

    Abstract translation: 一种制备高纯度H 2 O 2水溶液的方法,其包括以下步骤:(a)将含有H 2 O 2的粗H 2 O 2水溶液,有机碳杂质和无机杂质进料到至少具有内表面的内壁的蒸馏塔中, 由氟树脂制成,至少其表面由在蒸馏塔内部设置的氟树脂制成的内部填料和填料从蒸馏塔的底部排出; (b)将粗过氧化氢水溶液在减压下加热并在底部进行蒸馏; (c)从蒸馏塔的顶部取出含有极低浓度的H 2 O 2的馏出物,在蒸馏操作中不使用馏出物进行回流,并且以超过一定量的量加入超纯水 进入塔顶)/((塔顶馏出物的量) - (进入塔顶的超纯水的量))为0.1-20进入蒸馏塔的顶部; 和(d)从蒸馏塔的中间部分同时或相继取出具有高纯度的H 2 O 2水溶液。

    Process for refining heat-deteriorative compound, contained in multi-component liquid mixture, by distillation
    10.
    发明授权
    Process for refining heat-deteriorative compound, contained in multi-component liquid mixture, by distillation 有权
    通过蒸馏精制含有多组分液体混合物中的热变质化合物的方法

    公开(公告)号:US06336997B1

    公开(公告)日:2002-01-08

    申请号:US09241557

    申请日:1999-02-01

    CPC classification number: B01D3/322 B01D3/146 C07C41/42 Y10S203/09 C07C43/23

    Abstract: A heat-deteriorative compound contained in a liquid mixture is refined by a distillation procedure using a distillation column in which a vapor fraction and a liquid fraction containing the heat-deteriorative compound are generated from the liquid mixture, and a liquid film-falling reboiler in which the liquid fraction falls in the form of liquid films along inner surfaces of a plurality of vertical heat-conductive pipes at a Reynolds number (Re) of 700 to 10,000 and heated to a temperature lower than the heat-deterioration temperature of the heat deteriorative compound to such an extent that 1 to 15% by weight of the liquid fraction is evaporated per pass through the reboiler, the heated liquid fraction being returned into the distillation column to generate the vapor fraction from the liquid mixture fed into the distillation column.

    Abstract translation: 液体混合物中含有的热变质化合物通过使用蒸馏塔的蒸馏步骤进行精炼,其中从液体混合物中产生含有热变质化合物的蒸气馏分和液体馏分, 其中液体馏分沿着多个垂直导热管的内表面以700至10,000的雷诺数(Re)落入液体膜的形式,并加热至低于热劣化温度的温度 化合物,使得每次通过再沸器蒸发1至15重量%的液体馏分,加热的液体馏分返回到蒸馏塔中以从进料到蒸馏塔的液体混合物中产生蒸气馏分。

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