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    31.
    发明专利
    未知

    公开(公告)号：DE1193671B

    公开(公告)日：1965-05-26

    申请号：DEU0008892

    申请日：1962-04-26

    Applicant: UNION CARBIDE CORP

    Inventor： POPPELSDORF FEDOR

    IPC: C07C209/48 ,  C08G18/50 ,  C08G65/30 ,  C08G65/333 ,  C08G69/40

    Abstract: The invention comprises polyoxypropylene compounds having at least one terminal 3-aminopropyl radical and having molecular weights of 200 to 5000. They are prepared by hydrogenating cyanoethylated derivatives of polyoxypropylene compounds in the presence of a catalyst and a tertiary amine or heterocyclic amine and also preferably in the presence of anhydrous ammonia. Specified cyanoethylated polyoxypropylenes are those whose derivatives have molecular weights of 200 to 5000 and include wherein n is 2 to 36 wherein the sum of x, y and z is approximately 80, wherein the sum of x, y and z is approximately 48 and wherein the sum of x, y and z is approximately 6. Tertiary amines used have the general formulae or where n is 2 to 6 and R1, R2 and R3 (one of whic may be phenyl) are alkyl

    PROCESS FOR THE HYDROLYSIS OF DIALKYL CARBONATES
    33.
    发明专利
    PROCESS FOR THE HYDROLYSIS OF DIALKYL CARBONATES 未知

    公开(公告)号：CA1285288C

    公开(公告)日：1991-06-25

    申请号：CA525081

    申请日：1986-12-11

    Applicant: UNION CARBIDE CORP

    Inventor： CRANDALL JOHN W ,  DEITZLER JAMES E ,  KAPICAK LOUIS A ,  POPPELSDORF FEDOR

    IPC: C07C69/36 ,  C07C29/09 ,  C07C29/147 ,  C07C31/04 ,  C07C67/36 ,  C07C67/48 ,  C07C67/60 ,  C07C69/96

    Abstract: A process is provided for the utilization of dialkyl carbonates formed as by-products in a continuous process for the synthesis of oxalic acid esters from nitrous acid esters and carbon monoxide and wherein the esters are subsequently used as intermediates in the production of commercially useful products, such as ethylene glycol. The process comprises contacting a mixture containing the by-product comprised of a dialkyl carbonate with an aqueous solution of a metal carbonate under hydrolyzing conditions whereby the dialkyl carbonate is converted to the corresponding alkanol and the metal carbonate is converted to metal bicarbonate. Upon distillation of the alkanol from the mixture the bicarbonate is converted back to the metal carbonate which can then be recycled from the bottoms to the hydrolyzing zone for use in further hydrolysis of by-product. The alkanol is recycled for use in the continuous process.

    HYDROGENATION CATALYST SHAPES
    34.
    发明专利
    HYDROGENATION CATALYST SHAPES 未知

    公开(公告)号：CA1284486C

    公开(公告)日：1991-05-28

    申请号：CA531215

    申请日：1987-03-05

    Applicant: UNION CARBIDE CORP

    Inventor： POPPELSDORF FEDOR ,  SMITH CHARLES A

    IPC: B01J35/02 ,  B01J23/72 ,  C07B61/00 ,  C07C27/00 ,  C07C29/132 ,  C07C29/136 ,  C07C29/149 ,  C07C31/20 ,  C07C67/00

    Abstract: An improved calcined hydrogenation catalyst shape which is useful for the catalysis of hydrogenation reactions in a tubular reactor is provided. The catalyst shape has an annular configuration with an open center core, and wherein the shape contains, as a reinforcing matrix distributed therein, up to about 50 per cent by weight of milled glass fibers having specific dimensions and wherein the crush strength of the shape is vastly improved with little change in catalytic activity over the non-reinforced shape of comparable size. Additionally, when the shapes of the present invention are employed pressure-drop and diffusion problems are reduced. The catalyst shapes are particularly useful for the hydrogenation of alkyl oxalates to ethylene glycol whereby the reaction can be conducted at lower temperatures and hence by-product formation is minimized.

    PROCESS FOR THE HYDROLYSIS OF DIALKYL CARBONATES
    35.
    发明专利
    PROCESS FOR THE HYDROLYSIS OF DIALKYL CARBONATES 未知

    公开(公告)号：ZA869304B

    公开(公告)日：1987-07-29

    申请号：ZA869304

    申请日：1986-12-09

    Applicant: UNION CARBIDE CORP

    Inventor： CRANDALL JOHN WORTH ,  DEITZLER JAMES EDWARD ,  KAPICAK LOUIS ANTHONY ,  POPPELSDORF FEDOR

    IPC: C07C69/36 ,  C07C29/09 ,  C07C29/147 ,  C07C31/04 ,  C07C67/36 ,  C07C67/48 ,  C07C67/60 ,  C07C69/96 ,  C01B ,  C07B ,  C07C

    Abstract: A process is provided for the utilization of dialkyl carbonates formed as by-products in a continuous process for the synthesis of oxalic acid esters from nitrous acid esters and carbon monoxide and wherein the esters are subsequently used as intermediates in the production of commercially useful products, such as ethylene glycol. The process comprises contacting a mixture containing the by-product comprised of a dialkyl carbonate with an aqueous solution of a metal carbonate under hydrolyzing conditions whereby the dialkyl carbonate is converted to the corresponding alkanol and the metal carbonate is converted to metal bicarbonate. Upon distillation of the alkanol from the mixture the bicarbonate is converted back to the metal carbonate which can then be recycled from the bottoms to the hydrolyzing zone for use in further hydrolysis of by-product. The alkanol is recycled for use in the continuous process.

    36.
    发明专利
    未知

    公开(公告)号：DE2525636A1

    公开(公告)日：1975-12-11

    申请号：DE2525636

    申请日：1975-06-09

    Applicant: UNION CARBIDE CORP

    Inventor： FERRELL JOHN LEE ,  POPPELSDORF FEDOR

    IPC: C07C20060101 ,  C07C93/04

    Abstract: 1463780 Bis[2 - (N,N - dimethylamino)- ethyl]ether UNION CARBIDE CORP 23 May 1975 [10 June 1974] 22446/75 Heading C2C Bis[2 - (N,N - dimethylamino)ethyl]ether is made by reacting trimethylamine with 2-[2- (N,N - dimethylamino)ethoxy]ethanol in the presence of a nickel catalyst (e.g. Raney nickel or nickel on an alumina support).

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