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    Process for the preparation of polyhydric phenols
    2.
    发明授权
    Process for the preparation of polyhydric phenols 失效
    多元酚的制备方法

    公开(公告)号：US4387252A

    公开(公告)日：1983-06-07

    申请号：US193572

    申请日：1980-10-03

    申请人： Christoph Jupe ,  Helmut Waldmann ,  Hermann Seifert

    发明人： Christoph Jupe ,  Helmut Waldmann ,  Hermann Seifert

    IPC分类号： B01J27/00 ,  B01J31/00 ,  C07B61/00 ,  C07C27/00 ,  C07C37/60 ,  C07C39/08 ,  C07C67/00 ,  C07C39/10

    CPC分类号： C07C37/60

    摘要： The invention relates to an improved process for the preparation of polyhydric phenols by hydroxylation of phenols with peroxidic hydroxylating agents and in the presence of 0.00005 to 0.03% by weight (relative to the phenols employed) of substances which can form chelate complexes with metal ions, such as nitrogen-containing di- or poly- carboxylic acids or phosphoric acid derivatives. The products of the process are known to be useful in the fields of photography, dyestuffs, plastics, fragrances and flavors.

    摘要翻译： 本发明涉及通过用过氧化羟基化剂羟基化酚和在可与金属离子形成螯合物的物质0.00005至0.03重量％（相对于所用酚）存在下制备多元酚的改进方法， 例如含氮二羧酸或多羧酸或磷酸衍生物。 已知该方法的产品可用于摄影，染料，塑料，香料和香料领域。

    Process for the preparation of pyrocatechol and hydroquinone
    3.
    发明授权
    Process for the preparation of pyrocatechol and hydroquinone 失效
    制备邻苯二酚和氢醌的方法

    公开(公告)号：US4362604A

    公开(公告)日：1982-12-07

    申请号：US292854

    申请日：1981-08-14

    申请人： Christoph Jupe ,  Helmut Waldmann ,  Jurgen Baumert ,  Gunther Schummer

    发明人： Christoph Jupe ,  Helmut Waldmann ,  Jurgen Baumert ,  Gunther Schummer

    IPC分类号： C07C27/00 ,  C07C37/60 ,  C07C37/74 ,  C07C39/08 ,  C07C67/00 ,  B01D3/14

    CPC分类号： C07C37/74 ,  C07C37/60

    摘要： A process for the isolation of hydroquinone, pyrocatechol, phenol and carboxylic acid from the reaction mixture containing the same such as one obtained by reaction of phenol with percarboxylic acid is disclosed. The reaction mixture is fed to a first rectification column and subjected to distillation whereby there is obtained a bottoms product containing pyrocatechol, hydroquinone and phenol. The top product is largely condensed and recycled, there being withdrawn from the top of the rectification column a mixture comprising phenol and carboxylic acid. The phenol and carboxylic acid mixture are continuously fed to a second rectification column where carboxylic acid is separated from phenol and substantially pure phenol is withdrawn from the stripping section and/or bottom of the second rectification column.

    摘要翻译： 公开了从含有酚类的反应混合物中分离氢醌，邻苯二酚，苯酚和羧酸的方法，例如通过苯酚与过羧酸的反应而得到的方法。 将反应混合物加入到第一精馏塔中并进行蒸馏，由此得到含有邻苯二酚，氢醌和苯酚的底部产物。 顶部产物大部分是冷凝和再循环的，从精馏塔的顶部排出含酚和羧酸的混合物。 将苯酚和羧酸混合物连续进料至第二精馏塔，其中羧酸与苯酚分离，基本上纯的苯酚从第二精馏塔的汽提段和/或底部排出。

    Process for the preparation of pyrocatechol and hydroquinone
    4.
    发明授权
    Process for the preparation of pyrocatechol and hydroquinone 失效
    制备邻苯二酚和氢醌的方法

    公开(公告)号：US4381973A

    公开(公告)日：1983-05-03

    申请号：US292855

    申请日：1981-08-14

    申请人： Christoph Jupe ,  Helmut Waldmann ,  Jurgen Baumert ,  Gunther Schummer

    发明人： Christoph Jupe ,  Helmut Waldmann ,  Jurgen Baumert ,  Gunther Schummer

    IPC分类号： C07C27/00 ,  C07C37/60 ,  C07C37/74 ,  C07C39/08 ,  C07C67/00 ,  B01D3/10

    CPC分类号： C07C37/74 ,  C07C37/60

    摘要： A process for the preparation of pyrocatechol and hydroquinone by reaction of phenol with a peroxidic hydroxylating reagent followed by working-up of the resultant reaction mixture is disclosed. The work-up procedure is carried out in a first rectification column operated under specified conditions and having specified separation stages in a rectification section and a stripping section whereby there is distilled overhead components which boil at a temperature lower than phenol. Taken off from the bottom is a mixture comprising phenol and materials of higher boiling point which are fed into a second rectification column which is also operated under very specified conditions whereby pure phenol is recovered overhead leaving a bottoms comprising phenol pyrocatechol and hydroquinone which are then processed to separate phenol from a mixture of pyrocatechol and hydroquinone.

    摘要翻译： 公开了通过苯酚与过氧化羟基化试剂的反应制备邻苯二酚和氢醌的方法，然后处理所得的反应混合物。 处理程序在规定条件下操作的第一精馏塔中进行，并且在精馏段和汽提段中具有特定的分离阶段，由此蒸馏塔顶组分在低于苯酚的温度下沸腾。 从底部排出的是包含苯酚和高沸点物质的混合物，该混合物进料到第二精馏塔中，该第二精馏塔也在非常规定的条件下操作，从而从顶部回收纯苯酚，留下包含苯酚邻苯二酚和氢醌的塔底物，然后将其加工 以将苯酚与邻苯二酚和氢醌的混合物分离。

    Process for the preparation of propylene oxide
    6.
    发明授权
    Process for the preparation of propylene oxide 失效
    环氧丙烷的制备方法

    公开(公告)号：US4137242A

    公开(公告)日：1979-01-30

    申请号：US678823

    申请日：1976-04-28

    申请人： Gunter Prescher ,  Gerd Schreyer ,  Otto Weiberg ,  Rolf Wirthwein ,  Helmut Waldmann ,  Hermann Seifert ,  Wulf Schwerdtel ,  Wolfgang Swodenk

    发明人： Gunter Prescher ,  Gerd Schreyer ,  Otto Weiberg ,  Rolf Wirthwein ,  Helmut Waldmann ,  Hermann Seifert ,  Wulf Schwerdtel ,  Wolfgang Swodenk

    IPC分类号： C07C409/24 ,  C07D301/14 ,  C07D301/32

    CPC分类号： C07D301/14 ,  C07C407/00 ,  C07C407/003

    摘要： Process for continuous production of propylene oxide (FIG. 1) from propylene and aqueous hydrogen peroxide. The aqueous hydrogen peroxide is first reacted with propionic acid in the presence of acid catalyst to form perpropionic acid (1). The perpropionic acid is taken up by extraction in benzene (5, 18) and following drying of the benzene solution (21), the perpropionic acid in the solution is reacted with propylene (24) for oxidation of the propylene to propylene oxide and conversion of the perpropionic acid back to propionic acid. The reaction mixture is worked up to separate propylene oxide, propionic acid and benzene (30, 32, 37, 39), and the latter two are recycled. In the benzene extraction (5, 18), an aqueous raffinate (7) is formed containing hydrogen peroxide and acid catalyst. The aqueous raffinate can be divided into a stream which is recycled to the propionic acid reactor (1), and a second stream which can be distilled to remove water with the concentrate being recycled to the propionic acid reactor. (1)

    摘要翻译： 从丙烯和过氧化氢水溶液连续生产环氧丙烷（图1）的方法。 过氧化氢水溶液首先在酸催化剂存在下与丙酸反应形成过丙酸（1）。 通过在苯（5,18）中萃取并过滤苯溶液（21），将过丙酸吸收，将溶液中的丙酸与丙烯（24）反应，将丙烯氧化成环氧丙烷，并将 过丙酸回到丙酸。 处理反应混合物以分离环氧丙烷，丙酸和苯（30,32,37,39），后两者被再循环。 在苯提取（5,18）中，形成含有过氧化氢和酸催化剂的残液水溶液（7）。 含水萃余液可以分为循环到丙酸反应器（1）的料流，以及可以将浓缩物再循环到丙酸反应器中的蒸馏水以除去水的第二料流。

    Process for the preparation of perpropionic acid solutions
    7.
    发明授权
    Process for the preparation of perpropionic acid solutions 失效
    制备过丙酸溶液的方法

    公开(公告)号：US4087454A

    公开(公告)日：1978-05-02

    申请号：US678821

    申请日：1976-04-28

    申请人： Gunter Prescher ,  Otto Weiberg ,  Helmut Waldmann ,  Hermann Seifert

    发明人： Gunter Prescher ,  Otto Weiberg ,  Helmut Waldmann ,  Hermann Seifert

    IPC分类号： C07C67/00 ,  C07C407/00 ,  C07C409/24 ,  C07D301/14 ,  C07C179/10

    CPC分类号： C07C407/00

    摘要： In the production of perpropionic acid by reaction of hydrogen peroxide and propionic acid in an aqueous medium and in the presence of an acid catalyst, e.g. sulfuric acid, to produce the peracid and water, the danger of explosion is reduced by employing a molar ratio of hydrogen peroxide to propionic acid of less than 1.4:1, a temperature of up to 60.degree. C, and an initial hydrogen peroxide:water ratio of up to 1.2, and a catalyst concentration of 10-40% of weight.

    摘要翻译： 在通过过氧化氢和丙酸在水性介质中和在酸催化剂（例如）的存在下反应生产过丙酸。 硫酸，以产生过酸和水，通过使用过氧化氢与丙酸的摩尔比小于1.4:1，温度高达60℃，初始过氧化氢：水，可以降低爆炸危险 比例高达1.2，催化剂浓度为10-40％重量。

    Preparation of .epsilon.-caprolactone
    8.
    发明授权
    Preparation of .epsilon.-caprolactone 失效
    ε-己内酯的制备

    公开(公告)号：US4341709A

    公开(公告)日：1982-07-27

    申请号：US150260

    申请日：1980-05-15

    申请人： Willi Hofen ,  Herbert Klenk ,  Gerd Schreyer ,  Otto Weiberg ,  Helmut Waldmann ,  Hermann Seifert ,  Karl-Hermann Reissinger ,  Wolfgang Swodenk

    发明人： Willi Hofen ,  Herbert Klenk ,  Gerd Schreyer ,  Otto Weiberg ,  Helmut Waldmann ,  Hermann Seifert ,  Karl-Hermann Reissinger ,  Wolfgang Swodenk

    IPC分类号： C07D313/04 ,  C07D315/00 ,  C07D313/02

    CPC分类号： C07D315/00

    摘要： A process for the preparation of .epsilon.-caprolactone comprising:(a) reacting cyclohexanone with a solution of perpropionic acid in an organic solvent at a molar ratio of cyclohexanone;perpropionic acid of about 1.1-5:1 at a temperature of about 10.degree. to 80.degree. C. to form a reaction mixture consisting essentially of .epsilon.-caprolactone, propionic acid and organic solvent,(b) distilling the reaction mixture from (a) in a first distillation unit to obtain a distillate comprising the organic solvent and a distillation residue,(c) introducing the distillation residue from (b) at a point into a second distillation unit to obtain a distillate comprising propionic acid and unreacted cyclohexanone, removing from the second distillation unit, separately from one another and at a point below the point of introduction into the second distillation unit, .epsilon.-caprolactone and any high-boiling constituents, and,(d) distilling in a third distillation unit the distillate from (c) to obtain a distillate consisting essentially of propionic acid and a distillation residue comprising a mixture of propionic acid and cyclohexanone.

    摘要翻译： 一种制备ε-己内酯的方法，包括：（a）使环己酮与过丙酸在有机溶剂中的溶液以环己酮的摩尔比约1.1-5:1的约0.1〜5:1的摩尔比在约10℃〜 形成基本上由ε-己内酯，丙酸和有机溶剂组成的反应混合物，（b）在第一蒸馏单元中将反应混合物从（a）中蒸馏，得到包含有机溶剂和蒸馏残余物的馏出物 （c）在一点将来自（b）的蒸馏残余物引入第二蒸馏单元以获得包含丙酸和未反应的环己酮的馏出物，从第二蒸馏单元彼此分离并在低于 引入第二蒸馏装置，ε-己内酯和任何高沸点组分，和（d）在第三蒸馏装置中蒸馏出馏出物（c）得到 基本上由丙酸组成的馏出物和包含丙酸和环己酮的混合物的蒸馏残渣。