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    Process for recovery of pure acetonitrile
    21.
    发明授权
    Process for recovery of pure acetonitrile 失效
    回收纯乙腈的方法

    公开(公告)号：US3870746A

    公开(公告)日：1975-03-11

    申请号：US21784372

    申请日：1972-01-14

    Applicant: DEGUSSA

    Inventor： LUSSLING THEODOR ,  SCHREYER GERD ,  THEISSEN FERDINAND ,  WEIGERT WOLFGANG

    IPC: C07C20060101 ,  C07C121/18 ,  C07C121/32

    CPC classification number: C07C255/00 ,  Y10S203/03

    Abstract: Pure acetonitrile is recovered from aqueous acetonitrile by extracting with an organic solvent which has little miscibility with water, boils higher than acetonitrile and does not form an azeotrope with acetonitrile. The portion of the extract boiling up to 76*C is distilled off. The remaining acetonitrile containing more difficulty volatile portion is freed from the residual water by addition of an entraining agent and recovering the pure acetonitrile by a fractional distillation.

    Abstract translation: 通过用与水混溶性小的有机溶剂提取，从乙腈水溶液中回收纯乙腈，沸点高于乙腈，不与乙腈形成共沸物。 将沸腾至76℃的提取物部分蒸馏掉。 通过加入夹带剂将含有更难挥发性部分的剩余乙腈从残余水中除去，并通过分馏回收纯乙腈。

    Process for the oxidation of {60 ,{62 -unsaturated aldehydes to {60 ,{62 -unsaturated carboxylic acids
    22.
    发明授权
    Process for the oxidation of {60 ,{62 -unsaturated aldehydes to {60 ,{62 -unsaturated carboxylic acids 失效
    将{60，{62-不饱和醛氧化成{60，{62-不饱和羧酸）的方法

    公开(公告)号：US3867438A

    公开(公告)日：1975-02-18

    申请号：US38323273

    申请日：1973-07-27

    Applicant: DEGUSSA

    Inventor： HENSEL JORG ,  LUSSLING THEODOR ,  NOLL EWALD ,  SCHAEFER HANS ,  WEIGERT WOLFGANG

    IPC: B01J23/30 ,  B01J23/68 ,  B01J23/88 ,  B01J23/888 ,  B01J37/02 ,  C07C51/25 ,  C07C57/055 ,  C07C57/04 ,  C07C51/26

    CPC classification number: B01J23/8885 ,  B01J23/30 ,  B01J23/687 ,  B01J37/0236 ,  C07C51/252 ,  C07C57/04

    Abstract: Catalyst for the oxidation of an Alpha , Beta -unsaturated aldehyde to an Alpha , Beta -unsaturated carboxylic acid, said catalyst comprising (A) a mixture of oxides of the elements antimony, molybdenum, vanadium and tungsten and/or compounds of said elements and oxygen, and (B) at least one oxide or oxygen containing compound of the elements lead, silver, copper, tin, titanium or bismuth, said catalyst having an atomic ratio of antimony to molybdenum to vanadium to tungsten to Group (B) elements of about 1 - 60 : 12 : 0.5 - 25 : 0.1 - 12 : 0.1 - 12. Processes for the use and preparation of the catalysts are provided.

    Abstract translation: 用于将α，β-不饱和醛氧化成α，β-不饱和羧酸的催化剂，所述催化剂包含（A）元素锑，钼，钒和钨的氧化物和/或所述元素的化合物的混合物，和 氧，和（B）元素铅，银，铜，锡，钛或铋的至少一种氧化物或氧化物，所述催化剂具有锑与钼与钒的原子比与钒与钨的原子比与钨（B）元素的 约1：60：12：0.5 - 25：0.1 - 12：0.1 - 12。提供了使用和制备催化剂的方法。

    Method for the oxidizing alpha, beta-unsaturated aldehydes to alpha, beta-unsaturated carboxylic acids
    23.
    发明授权
    Method for the oxidizing alpha, beta-unsaturated aldehydes to alpha, beta-unsaturated carboxylic acids 失效
    将α，β-不饱和醛氧化成α，β-不饱和羧酸的方法

    公开(公告)号：US3867345A

    公开(公告)日：1975-02-18

    申请号：US29262872

    申请日：1972-09-27

    Applicant: DEGUSSA

    Inventor： KOBERSTEIN EDGAR ,  LUESSLING THEODOR ,  NOLL EWALD ,  SCHAEFER HANS ,  WEIGERT WOLFGANG

    IPC: B01J23/28 ,  B01J23/30 ,  C07C51/25 ,  C07C57/055 ,  C07C51/26 ,  C07C57/04

    CPC classification number: B01J23/30 ,  B01J23/28 ,  C07C51/252 ,  C07C57/04

    Abstract: Alpha , Beta -unsaturated aldehydes are oxidized to Alpha , Beta -unsaturated carboxylic acids by contacting the Alpha , Beta -unsaturated aldehyde with air or oxygen and steam at 200*350*C and at atmospheric or elevated pressure in the presence of a catalyst so as to convert the aldehyde to the corresponding carboxylic acid. The catalyst comprises a mixture of oxides of the elements antimony, molybdenum, vanadium and tungsten and/or compounds of said elements and oxygen wherein the atomic ratio of the elements is as follows: 1 to 60 : 12 : 0.5 to 25 : 0.1 to 12. The catalyst is made by intimately mixing under agitation aqueous solutions or suspensions of the oxides or other compounds, for instance antimony oxide, ammonium molybdate, ammonium vanadate and ammonium tungstate, and possibly a carrier material and preferably bringing the mixture to boiling point, then separating the catalyst mass from the aqueous phase, drying it and calcining it at 225*-275*C, followed by heating in air for 15-60 minutes at 350*-475*C.

    Abstract translation: α，β-不饱和醛被氧化成α，β-不饱和羧酸，通过使α，β-不饱和醛与空气或氧气和蒸汽在200-350℃和大气压或高压下在催化剂存在下接触 以将醛转化成相应的羧酸。 催化剂包括元素锑，钼，钒和钨的氧化物和/或所述元素和氧的化合物的混合物，其中元素的原子比如下：1至60：12：0.5至25：0.1至12 。

    Process for the selective chlorination of alkylmercapto-substituted s-triazines
    25.
    发明授权
    Process for the selective chlorination of alkylmercapto-substituted s-triazines 失效
    选择性氯化取代的S-TRIAZINES的方法

    公开(公告)号：US3577416A

    公开(公告)日：1971-05-04

    申请号：US3577416D

    申请日：1969-02-13

    Applicant: DEGUSSA

    Inventor： SCHWARZE WERNER ,  GIESSELMANN GUNTER ,  WEIGERT WOLFGANG

    IPC: C07D55/48

    Abstract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

    28.
    发明专利
    未知

    公开(公告)号：RO65916A

    公开(公告)日：1980-06-15

    申请号：RO8108375

    申请日：1975-01-10

    Applicant: DEGUSSA

    Inventor： GEIGER FRIEDHELM ,  HEIMBERGER WERNER ,  SCHREYER GERD ,  WEIGERT WOLFGANG

    IPC: B01D53/68 ,  B01D53/14 ,  B01D53/77 ,  C01B7/00 ,  C01B7/01 ,  C01C3/00 ,  C01C3/14 ,  C01B7/08

    Abstract: Cyanogen chloride and hydrogen chloride are produced by reacting hydrogen cyanide and chlorine, separating from the gaseous mixture on the one hand hydrogen chloride and on the other hand cyanogen chloride which in a given case can also contain chlorine, by absorption in a halohydrocarbon which has a boiling point between that of cyanogen chloride and cyanuric chloride and after distillative separation of the dissolved cyanogen chloride-chlorine mixture returning the solvent to the absorption column, the process includes A. ADDING AS THE SOLVENT FOR THE ABSORPTION A TRIFLUOROMETHYL SUBSTITUTED AROMATIC HYDROCARBON OR HALOHYDROCARBON OR A MIXTURE OF SUCH TRIFLUOROMETHYL SUBSTITUTED AROMATIC HYDROCARBONS OR HALOHYDROCARBONS, B. SUBJECTING THE GAS MIXTURE CONSISTING OF CYANOGEN CHLORIDE, HYDROGEN CHLORIDE AND IN A GIVEN CASE CHLORINE AFTER LEAVING THE REACTOR FOR THE CHLORINATION OF HYDROGEN CYANIDE AND BEFORE ENTRANCE INTO THE ABSORPTION COLUMN TO A PRETREATMENT WITH THE SOLVENTS SET FORTH UNDER (A) AT A TEMPERATURE BETWEEN 80 DEG C. and the boiling point of the solvent and/or C. EITHER CONVERTING THE N-chloro-chloroformimide chloride formed in small amounts from the chlorine and cyanogen chloride in the course of the absorption and distillation into the insoluble chloroformimide chloride hydrochloride by gassing the solvent with hydrogen chloride and separating the insoluble hydrochloride in conventional manner and/or withdrawing the N-chloro-chloroformimide together with some cyanogen chloride and solvent of the previously named distillation column for separation of the cyanogen chloride by means of a side outlet, and in a second subsequently provided distillation column separating into solvent and pure N-chloro-chloroformimide chloride, whereby then the latter can be conducted both into the cyanogen chloride reactor and also, if connected to a plant for the production of cyanuric chloride, into the trimerization reactor for cyanogen chloride and/or D. SUBJECTING THE SOLVENT CONTAMINATED WITH BYPRODUCTS BY THE SUSPENSION RESULTING FROM THE PRETREATMENT AND/OR ACCUMULATING IN THE SUMP OF THE DISTILLATION COLUMN FOR THE SEPARATION OF THE CYANOGEN CHLORIDE COMPLETELY OR IN A PARTIAL STREAM TO AN AQUEOUS ALKALINE TREATMENT OR IN COMBINATION WITH A CYANURIC CHLORIDE CONDENSATION PLANT LEADING THE SUSPENSION FORMED IN THE PRETREATMENT TO THE CYANURIC CHLORIDE CONDENSATION COLUMN.

    PROCESS FOR PRODUCING CYANOGEN CHLORIDE AND HYDROGEN CHLORIDE
    29.
    发明专利
    PROCESS FOR PRODUCING CYANOGEN CHLORIDE AND HYDROGEN CHLORIDE 未知

    公开(公告)号：CA1067674A

    公开(公告)日：1979-12-11

    申请号：CA217722

    申请日：1975-01-10

    Applicant: DEGUSSA

    Inventor： GEIGER FRIEDHELM ,  HEIMBERGER WERNER ,  SCHREYER GERD ,  WEIGERT WOLFGANG

    IPC: B01D53/68 ,  B01D53/14 ,  B01D53/77 ,  C01B7/00 ,  C01B7/01 ,  C01C3/00 ,  C01C3/14 ,  C01B7/08

    Abstract: The present invention provides a process for producing cyanogen chloride and hydrogen chloride by reacting hydrogen cyanide and chlorine, separating from the gaseous mixture (1) hydrogen chloride and (2) either cyanogen chloride or a mixture of cyanogen chloride and chlorine by absorbing (2) in a halohydrocarbon solvent which has a boiling point between that of cyanogen chloride and cyanuric chloride, separating the dissolved (2) from the solvent by distillation of (2) in a column and returning the solvent to the absorption apparatus the improvement comprising employing as the solvent for the absorption a member selected from a trifluoromethyl aromatic hydrocarbon and trifluoromethyl haloaromatic hydrocarbon.

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