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    12.
    发明专利
    未知

    公开(公告)号：BR8403914A

    公开(公告)日：1985-07-09

    申请号：BR8403914

    申请日：1984-08-03

    Applicant: STANDARD OIL CO OHIO

    Inventor： BURRINGTON JAMES DAVID ,  CESA MARK C

    IPC: C07C325/00 ,  C07C67/00 ,  C07C313/00 ,  C07C319/20 ,  C07C323/14 ,  C07C323/50 ,  C07C323/52 ,  C07C327/22 ,  C07C149/20

    Abstract: A 3-(hydrocarbylthio)propionaldehyde is reacted with a compound ……R min @X… to make a compound of the formula ……RSCH2CH=CHO@R min ;… this latter compound is reacted with CO and R sec YH where Y is O or S to make … … this compound is hydrolyzed to produce methionine hydroxy analog or a derivative thereof. The process avoids the use of HCN. 1-Propionyloxy-3-methylthiopropene and the methyl ester of 2-acetoxy-4-(methylthio)thiobutanoic acid are disclosed as new compounds.

    ACETONITRILE PURIFICATION PROCESS
    14.
    发明专利
    ACETONITRILE PURIFICATION PROCESS 未知

    公开(公告)号：RO116191B1

    公开(公告)日：2000-11-30

    申请号：RO9500436

    申请日：1995-02-27

    Applicant: STANDARD OIL CO

    Inventor： BLACHMAN MARC W ,  CESA MARK C ,  ATTIG THOMAS G

    IPC: C07C5/03 ,  C07C253/34 ,  C07C255/03

    Abstract: The invention relates to a process for purifying the acetonitrile. According to the invention, the process comprises the preparation of acetonitrile with impurities consisting of water, unsaturated nitriles and other substances having functional groups C=C and C=O at a temperature of at most 80°C, with an oxidising agent or a solid basic reactant, and afterwards the pre-treated acetonitrile is passed through a series of adsorbent beds in order to remove the resulting products and other impurities from the purified acetonitrile which is recovered.

    PROCESS FOR RECOVERING ACRYLONITRILE OR METHACRYLONITRILE
    19.
    发明专利
    PROCESS FOR RECOVERING ACRYLONITRILE OR METHACRYLONITRILE 未知

    公开(公告)号：CA2516401A1

    公开(公告)日：2004-07-29

    申请号：CA2516401

    申请日：2003-12-05

    Applicant: STANDARD OIL CO

    Inventor： CESA MARK C ,  GODBOLE SANJAY P

    IPC: C07C253/26 ,  C07C253/34 ,  C07C255/08

    Abstract: A process for the recovery of acrylonitrile or methacrylonitrile from an aqueous solution comprising subjecting the said solution to a water extractive distillation by feeding the solution to a distillation column and performing said extractive distillation and using solvent water introduced at the top of said column, removing a first overhead vapor stream of acrylonitrile or methacrylonitrile with some water from the top of the column, and a first liquid stream containing water and impurities from the bottom of the column, the contents of said column maintained at a substantially neutral pH by adding a sufficient amount of at least one alkaline compound selected from ammonium carbonate, ammonium bicarbonate, ammonium carbamate, and alkylene diamines to the overhead decanter and/or to the solvent water.

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