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96 records (took 0.015 seconds)

    Oxidation of aromatic compounds
    73.
    发明授权
    Oxidation of aromatic compounds 失效
    芳香化合物的氧化

    公开(公告)号：US3661984A

    公开(公告)日：1972-05-09

    申请号：US3661984D

    申请日：1969-02-17

    Applicant: UNIVERSAL OIL PROD CO

    Inventor： CYBA HENRYK A

    IPC: C07C51/265 ,  B01J9/04 ,  C07C63/02

    CPC classification number: C07C51/265 ,  C07C63/26

    Abstract: AROMATIC COMPOUNDS, AND PARTICULARLY AROMATIC HYDROCARBONS, ARE TREATED WITH AN EXCESS OF AN OXYGEN-CONTAINING GAS IN THE PRESENCE OF A CHAIN-TRANSFER AGENT AND WATER AT ELEVATED TEMPERATURES TO PREPARE OXIDIZED PROUCTS THEREOF. THIS IS EXEMPLIFIED BY THE CONVERSION OF P-XYLENE TO TEREPHTHALIC ACID.

    Cyclic borate antioxidant mixture
    75.
    发明授权
    Cyclic borate antioxidant mixture 失效
    环状硼酸抗氧化剂混合物

    公开(公告)号：US3598757A

    公开(公告)日：1971-08-10

    申请号：US3598757D

    申请日：1968-12-02

    Applicant: UNIVERSAL OIL PROD CO

    Inventor： CYBA HENRYK A

    IPC: C08K5/55 ,  B01J1/16

    CPC classification number: C08K5/55 ,  C08K5/00 ,  C08K5/13

    Abstract: SYNERGISTIC MIXTURE OF A CYCLIC BORATE CONTAINING ONE NITROGEN IN THE RING AND AT LEAST ONE OF A HYDROXYPHENONE, AN N-HYDROXYPHENYL-BENZOTRIAZOLE AND A SALICYLIC ACID ESTER. THIS MIXTURE IS USED AS AN ADDITIVE TO STABILIZER PLASTIC FROM DETERIORATION DUE TO WEATHERING, OXIDATION, HEAT, ETC.

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