4.
    发明专利
    未知

    公开(公告)号:DE1089546B

    公开(公告)日:1960-09-22

    申请号:DEF0018906

    申请日:1955-11-23

    Applicant: HOECHST AG

    Abstract: Halogen-containing or halogen- and sulphur -containing polyolefines are made by reacting the polyolefine in a halogen-resisting dispersing medium in which medium polymerization of the olefin has been effected in the presence of a catalyte mixture of a salt of an element of sub-group IV, V, or VI of the Mendeleeff Periodic Table and an organo-aluminium compound, with a halogen or a halogen in conjunction with sulphur dioxide. The dispersing medium may be carbon tetrachloride or CF2Cl-CF2Cl or CFCl2-CF2Cl. The halogenation or sulphohalogenation may be effected at elevated temperature or pressure, or in the presence of ultraviolet light, or in the presence of a halogen-transfer agent such as ferric chloride, aluminium chloride or acetone peroxide. The olefin may be ethylene, propylene, isobutylene, 1-butene 1-hexene, 1-octene, styrene, alpha-methyl styrene, or a nuclearly allkylated styrene. In Example I, polypropylene prepared in carbon tetrachloride in the presence of a titanium salt and an organo-aluminium compound is chlorinated at the boiling point of carbon tetrachloride in the presence of ultraviolet light, in Example II, ethylene polymerized in symmetrical tetrachlorodifluorethane in the presence of T1Cl4 and triethylaluminium is chlorinated in the presence of ultra-violet light, in Example 3, polyethylene in carbon tetrachloride is chlorinated, in Example 4, polypropylene in carbon tetrachloride is brominated, in Example 5, polypropylene in carbon tetrachloride is treated with chlorine and sulphur dioxide in the presence of ultra-violet light, in Example 6 polyethylene in trichlorotrifluoroethane is chlorinated, and in Examples 7 and 8 polyethylene is chlorinated. The products may be used as plasticizers, textile assistants, or as raw materials for lacquers. Specification 799,392, 799,803, 801,031, 841,981 and 841,982 are referred to.

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