Copolymerization of carbon monoxide with alkylene oxide
    2.
    发明授权
    Copolymerization of carbon monoxide with alkylene oxide 失效
    一氧化碳与亚烷基氧化物的共聚

    公开(公告)号:US3590075A

    公开(公告)日:1971-06-29

    申请号:US3590075D

    申请日:1967-09-22

    CPC classification number: C08G63/823

    Abstract: COPOLYMERS OF CARBON MONOXIDE AND A ALKYLENE OXIDES ARE PREPARED BY POLYMERING THE MONOMERS AT ELEVATED TEMPERATURE AND PRESSURE IN THE PRESENCE OF A CATALYST SYSTEM COMPRISING A SALT OF A GROUP VIII METAL AND A NITROGEN-CONTAINING COMPOUND SELECTED FROM AMINES AND ALKANOLAMINES. THE SALTS ARE PREFERABLY HALIDES OR CARBONATES.

    Detection device for gas mixtures
    4.
    发明授权
    Detection device for gas mixtures 失效
    气体混合物检测装置

    公开(公告)号:US3674439A

    公开(公告)日:1972-07-04

    申请号:US3674439D

    申请日:1970-07-10

    CPC classification number: G01N33/0027 G01N19/10 Y10T436/214

    Abstract: A DEVICE FOR DETECTING A COMPONENT IN A GAS MIXTURE CONSISTS OF A STRIP OF TWO LAYERS LAMINATED TOGETHER, ONE LAYER BEING A BETTER SOLVENT FOR THE GAS COMPONENT THAN THE OTHER AND EACH BEING EFFECTIVELY A NON-SOLVENT FOR THE OTHER COMPONENTS IN THE MIXTURE, A SUPPORT MEANS FOR SECURING ONE END OF THE STRIP AND A RECORDING MEANS AT THE FREE END OF THE STRIP FOR RECORDING A DEFLECTION IN THE STRIP DUE TO THE LATERAL EXPANSION OF THE SOLVENT LAYER WITH

    RESPECT TO THE NON-SOLVENT LAYER. ALSO DESCRIBED IN THE EMBODIMENT WHEREIN THE RATIO FO TWO COMPONENTS IN THE GAS MIXTURE MAY BE DETERMINED BY MEANS OF A DEVICE WHEREIN THE STRIP CONSISTS OF TWO LAYERS ONE OF WHICH IS A SOLVENT FOR ONE COMPONENT AND THE OTHER LAYER IS A SOLVENT FOR THE SECOND COMPONENT.

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