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    Radioactive polymers
    4.
    发明授权
    Radioactive polymers 失效
    放射性聚合物

    公开(公告)号：US3147243A

    公开(公告)日：1964-09-01

    申请号：US4796260

    申请日：1960-08-08

    申请人： CONTINENTAL OIL CO

    发明人： BRINDELL GORDON D ,  MARSHALL DAVID W

    IPC分类号： C08F10/00 ,  C08F36/04 ,  G21G4/04

    CPC分类号： G21G4/04 ,  C08F10/00 ,  C08F36/04 ,  Y10S526/905 ,  C08F4/608 ,  C08F4/00

    摘要： A radio-active polymer comprises a polymerized ethylenically unsaturated hydrocarbon monomer and tritium. The polymer is formed by subjecting the monomer to polymerization conditions in the presence of a polymerization catalyst and tritium. The monomer may be ethylene, propylene, butene, styrene, methyl styrene, or a conjugated diolefin. Preferred catalysts are mixtures of titanium or zirconium tetrachloride with amyl sodium, octyl sodium, parasodic tertiary butyl benzene, triethyl aluminium, tetraethyl lead, or diethyl zinc. Polymerization may take place at room temperature to 200 DEG C. in the presence of a paraffin or cycloparaffin inert diluent. In examples, a mixture of ethylene, hydrogen, and tritium is polymerized under pressure in the presence of n-hexane and either n-amyl sodium and titanium tetrachloride or triethyl aluminium and titanium tetrachloride. The polymers are useful as a constant source of beta radio-activity, for example as counting standards or tracers. To form a self-luminous material, a phosphor is incorporated in the polymer.