Process for the manufacture of polyurethanes by carbonylation of
nitrated hydroxy-aromatic compounds
    3.
    发明授权
    Process for the manufacture of polyurethanes by carbonylation of nitrated hydroxy-aromatic compounds 失效
    通过硝化羟基 - 芳族化合物的羰基化制造聚氨酯的方法

    公开(公告)号:US4426515A

    公开(公告)日:1984-01-17

    申请号:US487260

    申请日:1983-04-21

    IPC分类号: C08G71/00 C08G71/04

    CPC分类号: C08G71/04

    摘要: A process for the manufacture of polyurethanes by direct reaction in the liquid phase, comprising reacting, in the presence of a catalyst, carbon monoxide with a nitrated hydroxy-aromatic derivative of the formula:HO--Ar--NO.sub.2wherein Ar represents the aromatic radical: ##STR1## with the nitro and hydroxyl functional groups being in the para or meta positions with respect to each other, and R representing hydrogen or halogen atoms, or an alkyl group containing from 1 to 10 carbon atoms.

    摘要翻译: 在液相中通过直接反应制造聚氨酯的方法,包括在催化剂存在下使一氧化碳与下式的HO-Ar-NO 2的硝化羟基 - 芳族衍生物反应,其中Ar表示芳族基团: 硝基和羟基官能团相对于对位或间位,R表示氢或卤原子,或含有1至10个碳原子的烷基。

    Process for the preparation of 2-benzoxazolone and derivatives from
ortho-nitrophenols and carbon monoxide
    4.
    发明授权
    Process for the preparation of 2-benzoxazolone and derivatives from ortho-nitrophenols and carbon monoxide 失效
    制备2-苯并恶唑酮和邻硝基苯酚和一氧化碳的衍生物的方法

    公开(公告)号:US4454322A

    公开(公告)日:1984-06-12

    申请号:US460431

    申请日:1983-01-24

    CPC分类号: C07D263/58

    摘要: Process for the preparation of 2-benzoxazolone and derivatives by the reaction, in the liquid phase, at a temperature from 100.degree. to 500.degree. C. and a pressure from 20 to 500 bars, of an ortho-nitrophenol of the formula: ##STR1## in which R represents a hydrogen or halogen atom, an alkyl group containing from 1 to 10 carbon atoms or an alkoxy group OR' in which R' represents an alkyl group containing from 1 to 10 carbon atoms, and carbon monoxide under pressure, characterized in that the process is carried out in the presence ofa. a supported catalyst formed by the association of a noble metal of Group VIII and a second transition metal selected from Groups, V.sub.b, VI.sub.b or VIII of the Periodic Classification, in the metallic or oxide form, andb. a nitrogenous heteroaromatic base; the process may be carried out in the presence of a solvent.

    摘要翻译: 通过在液相中在100℃至500℃的温度和20至500巴的压力下通过下式的邻硝基苯酚反应制备2-苯并恶唑酮及其衍生物的方法:其中R表示氢或卤素原子,含有1至10个碳原子的烷基或其中R'表示含有1至10个碳原子的烷基的烷氧基OR'和加压下的一氧化碳,其特征在于 因为该过程是在a的存在下进行的。 b)通过与金属或氧化物形式的VIII族贵金属和选自周期级的Vb,VIb或VIII族的第二过渡金属缔合而形成的负载型催化剂。 含氮杂芳基; 该方法可以在溶剂的存在下进行。

    Process for making ethylene oxide catalyst
    6.
    发明授权
    Process for making ethylene oxide catalyst 失效
    制备环氧乙烷催化剂的方法

    公开(公告)号:US4717703A

    公开(公告)日:1988-01-05

    申请号:US867780

    申请日:1986-05-27

    摘要: A process for manufacturing silver catalysts deposited on a porous refractory support, comprising impregnating a refractory support with a portion of the silver required for the catalyst by immersing the support in a practically anhydrous solution of an organic carboxylic acid salt of silver in an organic liquid which complexes the silver ions, removing excess organic liquid from the support without causing the deposition of metallic silver thereon; depositing the remainder of the silver and at least one promoter selected from cesium, rubidium, or potassium on the support modified by the first silver deposit by immersing said modified support in a practically anhydrous solution of an organic carboxylic acid salt of silver in an organic liquid which complexes the silver ions, said organic liquid containing in the solubilized state, a salt of at least one of the promoters, before transformation of the silver deposited into metallic silver.

    摘要翻译: 一种制备沉积在多孔耐火载体上的银催化剂的方法,包括:将载体浸入几乎无水的银有机羧酸盐的有机液体溶液中,浸渍耐火载体与催化剂所需的一部分银, 使银离子络合,从载体上除去过量的有机液体,而不会在其上沉积金属银; 将剩余的银和至少一种选自铯,铷或钾的促进剂沉积在由第一银沉积物改性的载体上,将所述改性载体浸入几乎无水的银有机羧酸盐溶液中的有机液体中 在将银沉积成金属银之前,将银离子,所述含有溶解状态的有机液体与至少一种助催化剂的盐复合。

    Process for preparing 2-(4-aminophenyl)-5-amino-benzimidazole and
substituted derivatives
    8.
    发明授权
    Process for preparing 2-(4-aminophenyl)-5-amino-benzimidazole and substituted derivatives 失效
    制备2-(4-氨基苯基)-5-氨基 - 苯并咪唑和取代衍生物的方法

    公开(公告)号:US4417056A

    公开(公告)日:1983-11-22

    申请号:US357108

    申请日:1982-03-11

    CPC分类号: C07D235/18

    摘要: The invention concerns a process for the preparation of 2-(4-aminophenyl)-5-aminobenzimidazole and substituted derivatives by catalytic cycloreduction of starting material N-(4-nitrobenzoyl)-2,4-dinitroaniline or a substituted derivative by hydrogen gas. According to the invention, the starting material is treated in suspension in an aqueous solution of hydrochloric or phosphoric acid, the content (C) of starting material in said suspension ranging from 0.15 to 1.5 mole per liter and the molar ratio (A): acid/starting material being from 2 to 20. The process is carried out at a hydrogen pressure from 5 to 100 bars and a temperature (T) from 20.degree. to 150.degree. C. selected so that the product T.times.A.times.C is equal to or greater than 25. There is thereby obtained a product of excellent purity with very good yields.

    摘要翻译: 本发明涉及通过起始原料N-(4-硝基苯甲酰基)-2,4-二硝基苯胺或通过氢气的取代衍生物的催化环化制备2-(4-氨基苯基)-5-氨基苯并咪唑和取代衍生物的方法。 根据本发明,原料在悬浮液中在盐酸或磷酸水溶液中处理,所述悬浮液中原料的含量(C)为0.15-1.5摩尔/升,摩尔比(A):酸 /原料为2〜20。该方法在5〜100巴的氢气压力和20〜150℃的温度(T)下进行,使得产物TxAxC等于或大于25 由此获得了具有优异纯度的产物,产率非常好。

    Process for the preparation of 8-hydroxyquinoline
    9.
    发明授权
    Process for the preparation of 8-hydroxyquinoline 失效
    8-羟基喹啉的制备方法

    公开(公告)号:US4044011A

    公开(公告)日:1977-08-23

    申请号:US621024

    申请日:1975-10-09

    IPC分类号: C07D215/26 C07D215/24

    CPC分类号: C07D215/26

    摘要: Substantially increased yields of pure-grade 8-hydroxyquinoline are obtained by gradual addition of a solution of o-nitrophenol in acrolein or in an allylidene acetal or diester, to an aqueous acid solution of o-aminophenol. 8-hydroxyquinoline is an article of commerce having known uses.

    摘要翻译: 通过将邻 - 硝基苯酚在丙烯醛或亚烯丙基缩醛或二酯中的溶液逐渐加入到邻氨基苯酚的酸性水溶液中,可以获得纯品级8-羟基喹啉的产量大幅提高。 8-羟基喹啉是具有已知用途的商品。

    Manufacture of fluoroethylenes and chlorofluoroethylenes
    10.
    发明授权
    Manufacture of fluoroethylenes and chlorofluoroethylenes 失效
    氟乙烯和氯氟乙烯的制造

    公开(公告)号:US5315045A

    公开(公告)日:1994-05-24

    申请号:US788388

    申请日:1991-11-06

    CPC分类号: C07C17/23

    摘要: The invention relates to hydrogenolysis of a chlorofluoroethane XYClC--CClX'Y' or of a chlorofluoroethylene XClC.dbd.CX'Y (where at least one of the symbols X, X', Y and Y' is a fluorine atom and the others are hydrogen or chlorine atoms) which is performed on a mixed catalyst based on copper or silver and on at least one platinum group metal (Ru, Rh, Pd, Os, Ir, Pt), these metals being deposited on a support.Even at low operating temperatures, excellent degrees of conversion and selectivities for fluoroethylenes and/or chlorofluoroethylenes are obtained.

    摘要翻译: 本发明涉及氯氟乙烷XYClC-CClX'Y'或氯氟乙烯XClC = CX'Y的氢解(其中符号X,X',Y和Y'中的至少一个是氟原子,而其它是氢或 氯原子),其在基于铜或银的混合催化剂上和在至少一种铂族金属(Ru,Rh,Pd,Os,Ir,Pt)上进行,这些金属沉积在载体上。 即使在低操作温度下,也可获得优异的转化率和氟乙烯和/或氯氟乙烯的选择性。