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40 条记录 (耗时 0.029 秒)

    Developer composition for irradiated, radiation-sensitive positive-working, negative-working and reversible reprographic layers
    21.
    发明授权
    Developer composition for irradiated, radiation-sensitive positive-working, negative-working and reversible reprographic layers 失效
    用于辐射，辐射敏感的正面工作，负面工作和可逆复制层的显影剂组合物

    公开(公告)号：US5292626A

    公开(公告)日：1994-03-08

    申请号：US750313

    申请日：1991-08-27

    申请人： Gerhard Buhr ,  Andreas Elsaesser ,  Hans W. Frass ,  Ernst I. Leupold

    发明人： Gerhard Buhr ,  Andreas Elsaesser ,  Hans W. Frass ,  Ernst I. Leupold

    IPC分类号： G03F7/32

    CPC分类号： G03F7/322

    摘要： The present invention relates to a developer composition for radiation-sensitive positive-working and negative-working and reversible reprographic layers which apart from a radiation-sensitive compound or radiation-sensitive combination of compounds contain, as an essential constituent, a binder which is insoluble in water but soluble in aqueous-alkaline solutions, said developer composition being characterized in that it contains, as essential constituents,(a) O- carboxymethyl- or O,O'-biscarboxymethylethylene glycol or an appropriately substituted polyethylene glycol comprising 2 to about 500 ethylene glycol units,(b) at least one compound showing an alkaline reaction in water, selected from the group including alkali metal hydroxides, alkali metal silicates, alkali metal phosphates, alkali metal borates, ammonium hydroxides, ammonium silicates, ammonium phosphates and ammonium borates, and(c) water.The developer composition gives a very good yield, makes possible short developing times and does not cause any problems due to flaky deposits of layer constituents or foaming. A process for developing positive-working, negative-working and reversible reprographic layers with the developer composition is also disclosed.

    摘要翻译： 本发明涉及一种用于辐射敏感的阳性作用和负性和可逆复制层的显影剂组合物，除了辐射敏感化合物或化合物的辐射敏感组合之外，其包含作为必需成分的不溶性粘合剂的粘合剂 所述显影剂组合物的特征在于其含有（a）O-羧甲基或O，O-双羧基甲基乙二醇或适当取代的聚乙二醇，其包含2至约500个 乙二醇单元，（b）至少一种在水中显示碱性反应的化合物，其选自碱金属氢氧化物，碱金属硅酸盐，碱金属磷酸盐，碱金属硼酸盐，氢氧化铵，硅酸铵，磷酸铵和硼酸铵 ，（c）水。 显影剂组合物产生非常好的产率，使得可能短的显影时间，并且不会由于层成分的片状沉积或发泡而引起任何问题。 还公开了利用显影剂组合物开发正性，负性和可逆复制层的方法。

    Process for the preparation of 2-chloro- or 2-bromo-naphthalene
    22.
    发明授权
    Process for the preparation of 2-chloro- or 2-bromo-naphthalene 失效
    制备2-氯 - 或2-溴 - 萘的方法

    公开(公告)号：US5043493A

    公开(公告)日：1991-08-27

    申请号：US547455

    申请日：1990-07-03

    申请人： marita Neuber ,  Ernst I. Leupold

    发明人： marita Neuber ,  Ernst I. Leupold

    IPC分类号： B01J29/40 ,  C07B61/00 ,  C07C17/00 ,  C07C17/358 ,  C07C25/22

    CPC分类号： C07C17/358

    摘要： Process for the preparation of 2-chloro- or 2-bromonaphthalene by isomerizing 1-chloro- or 1-bromonaphthalene over a zeolite as a catalyst which, in the anhydrous and template-free form, has the general formula (A)Z.Al.sub.2 O.sub.3..times.SiO.sub.2 (A)in which Z deontesM.sub.2.sup.I O, M.sup.II O or (M.sup.III).sub.2 O.sub.3,in which M.sup.I represents an alkali metal atom or ammonium or a hydrogen atom, M.sup.II represents an alkaline earth metal atom and M.sup.III represents a rare earth metal of atomic number 57 to 71 in the Periodic Table of the Elements, and x denotes a number from 4 to 4,000, with the proviso that if Z represents M.sub.2.sup.I O, at least some of the alkali metal atoms are replaced by hydrogen atoms, ammonium and/or the other metal atoms mentioned.

    摘要翻译： 通过以沸石作为催化剂异构化1-氯 - 或1-溴萘的方法制备2-氯 - 或2-溴萘的方法，其以无水和无模板的形式具有通式（A）Z.Al 2 O 3 xSiO 2（A）其中Z表示M2IO，MIIO或（MIII）2O3，其中MI表示碱金属原子或铵或氢原子，MII表示碱土金属原子，MIII表示原子序数的稀土金属 57至71元素，x表示4至4,000的数，条件是如果Z表示M2IO，则至少一些碱金属原子被氢原子替代，铵和/或其他 提到金属原子。

    Hemiacetals of glyoxylic esters and a process for the isolation of glyoxylic esters
    24.
    发明授权
    Hemiacetals of glyoxylic esters and a process for the isolation of glyoxylic esters 失效
    乙醛酸酯的半缩醛和乙醛酸酯的分离方法

    公开(公告)号：US4814491A

    公开(公告)日：1989-03-21

    申请号：US193225

    申请日：1988-05-11

    申请人： Robert K. Driscoll ,  Ernst I. Leupold ,  Joachim Schutz

    发明人： Robert K. Driscoll ,  Ernst I. Leupold ,  Joachim Schutz

    IPC分类号： C07C69/675 ,  C07C67/48 ,  C07C69/67 ,  C07C69/716 ,  C07C69/66

    CPC分类号： C07C67/54

    摘要： The invention relates to hemiacetals of glyoxylic esters and to a process for obtaining a glyoxylic ester having a C.sub.1 to C.sub.4 ester group from a mixture which essentially contains a glyoxylic ester of this type plus water and/or a C.sub.1 to C.sub.4 alcohol ROH. In this, the glyoxylic ester and the water and/or the alcohol are partly or completely in a chemically bonded form. A higher alcohol R'OH having a boiling point above 180.degree. C. is added, and distillation is carried out under a pressure not exceeding 800 mbar to remove first the water and/or the alcohol ROH and then the glyoxylic ester.

    摘要翻译： 本发明涉及乙醛酸酯的半缩醛，以及从基本上含有这种乙醛酸酯和/或C1〜C4醇ROH的混合物中获得具有C1〜C4酯基的乙醛酸酯的方法。 在此，乙醛酸酯和水和/或醇部分或完全以化学键合形式。 加入沸点高于180℃的高级醇R'OH，并在不超过800毫巴的压力下进行蒸馏，首先除去水和/或醇ROH，然后除去乙醛酸酯。

    Process for isomerizing monochlorophenols or dichlorophenols
    25.
    发明授权
    Process for isomerizing monochlorophenols or dichlorophenols 失效
    异构化单氯酚或二氯苯酚的方法

    公开(公告)号：US4568777A

    公开(公告)日：1986-02-04

    申请号：US670148

    申请日：1984-11-09

    申请人： Herbert Baltes ,  Ernst I. Leupold

    发明人： Herbert Baltes ,  Ernst I. Leupold

    IPC分类号： C07C37/00 ,  C07C39/27

    CPC分类号： C07C37/00 ,  B01J29/40 ,  B01J35/026 ,  B01J37/0018

    摘要： The invention relates to a process for isomerizing monochlorophenols or dichlorophenols in which one or more monochlorophenol or dichlorophenol is passed in the gas phase over a zeolite catalyst. In particular, the invention relates to a process for preparing 3-chlorophenol by isomerizing 2-chlorophenol and/or 4-chlorophenol and to a process for preparing 2,5-dichlorophenol by isomerizing 2,4-dichlorophenol using said method.

    摘要翻译： 本发明涉及一种使一氯酚或二氯苯酚异构化的方法，其中一种或多种一氯苯酚或二氯苯酚在气相中通过沸石催化剂。 特别地，本发明涉及通过使2-氯苯酚和/或4-氯苯酚异构化制备3-氯苯酚的方法和通过使用所述方法异构化2,4-二氯苯酚制备2,5-二氯苯酚的方法。

    Process for the preparation of an ethyl ester
    27.
    发明授权
    Process for the preparation of an ethyl ester 失效
    制备乙酯的方法

    公开(公告)号：US4481146A

    公开(公告)日：1984-11-06

    申请号：US306877

    申请日：1981-09-29

    申请人： Ernst I. Leupold ,  Hans-Joachim Schmidt ,  Knut Popp

    发明人： Ernst I. Leupold ,  Hans-Joachim Schmidt ,  Knut Popp

    IPC分类号： C07C69/02 ,  B01J31/10 ,  C07B61/00 ,  C07C67/08 ,  B01D3/14 ,  C07C67/02 ,  C11C3/02

    CPC分类号： C07C67/08 ,  Y10S203/06

    摘要： The invention relates to a process for the preparation of an ethyl ester from ethanol-containing mixtures of aliphatic alcohols, which comprises esterifying the alcohols with a carboxylic acid in the presence of an acid catalyst in a distilling column and separating in the same column the ethyl ester continuously from the ester mixture obtained. To this purpose, the alcohol mixture is introduced into the sump and the carboxylic acid is introduced into the column at a point located in the central part and the ethyl ester as well as the water formed during esterification are withdrawn continuously at the top of the column and the higher esters are withdrawn continuously at the sump.

    摘要翻译： 本发明涉及由含醇的脂族醇混合物制备乙酯的方法，该方法包括在酸性催化剂存在下，在蒸馏塔中用羧酸酸化醇，同时在同一柱中分离出乙基 酯从得到的酯混合物连续。 为此，将醇混合物引入贮槽中，并将羧酸在位于中心部分的位置引入塔中，并且在酯化期间形成的水在塔顶部连续排出 并且较高的酯在贮槽处连续排出。