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    4.
    发明专利
    未知

    公开(公告)号：DE1227243B

    公开(公告)日：1966-10-20

    申请号：DEB0075895

    申请日：1964-03-13

    Applicant: BASF AG

    Inventor： NAARMANN DR HERBERT ,  KASTNING DR ERNST GUENTHER

    IPC: C08F36/04

    Abstract: 1,3-Dienes having four to ten carbon atoms are polymerized in aqueous emulsion using 0.001 to 3% of a catalyst comprising (a) complex compounds of cobalt in which the cobalt is at least trivalent and which bears ligands containing nitrogen atoms selected from ammonia, hydrazine, derivatives of ammonia carrying cycloaliphatic hydrocarbon radicals, derivatives of hydrazine carrying aliphatic hydrocarbon radicals, and derivatives of hydrazine carrying cycloaliphatic hydrocarbon radicals all these hydrocarbon radicals containing one to ten carbon atoms together with (b) halogenated hydrocarbons, indifferent to water, containing one to ten halogen atoms and having molecular weights of from 35 to 128, the molar ratio of halogenated hydrocarbon to cobalt complex compound being between 0.5 to 1 and 40 to 1. Specified dienes are butadiene, isoprene, 2-3-dimethylbutadiene and 2-phenylbutadiene while specified comonomers are the methyl up to 2-ethyl hexyl esters of acrylic, methacrylic, fumaric or maleic acids, especially butyl acrylate, acrylo and methacrylonitrile, styrene, alphastyrene, o-, m- and p-methyl styrene, p-ethyl-styrene and vinyl-methyl, ethyl, isopropyl, n-butyl or isobutyl ethers. Amongst the listed cobalt compounds are octarine-mu-aminoperoxocobalt (III)-cobalt (IV) chloride, tetraethylenediamine - mu -aminoperoxocobalt (II)-cobalt (V) nitrate, hexamminetriodicobalt (II) oxalate, sulphatooctammine - mu - iminodi-cobalt (III) nitrate, nitratoaquotetrahydrazine-mu-aminodicobalt (III) chloride, the cobalt complex compounds en being an alkylene diamine, and Specified halogenated hydrocarbons include n-amyl chloride, carbon tetrachloride, chloroform, and chlorobenzene. Stabilizers e.g. trinonylphenyl phosphite, chain transfer agents, and emulsifying agents may be present, and the polymerization take place by batch or continuous methods with continuous addition of reactants.

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