Antistatic thermoplastic moulding compositions
    1.
    发明授权
    Antistatic thermoplastic moulding compositions 失效
    防静电热塑性成型组合物

    公开(公告)号:US3709852A

    公开(公告)日:1973-01-09

    申请号:US3709852D

    申请日:1971-03-09

    Applicant: HOECHST AG

    CPC classification number: C08K5/5397 Y10S260/16 Y10S524/912

    Abstract: THEERMOPLASTIC MOULDING COMPOSITIONS FOT THE MAKING OF ANTISTATIC SHAPED ARTICLES ARE DISCLOSEED. COMPOUNDS OF THE FORMULA

    R1-P(=O)-R2(-R3)

    WHEREIN R1 IS AN ALKYL RADICAL OF 8 TO 24 CARBON ATOMS AND R2 AND R3 ARE ALLKYL RADICALS OF 1 TO 3 CARBON ATOMS HAVE PROVED TO BE ESPECIALLY EFFICIENT ANTISTATIC AGENTS, PARTICULARLY IN VIEW OF THEIR ADVANTAGEOUS TOXICOLOGICAL PROPERTIES AMD OF THE FACT THAT OTHER FAVOURABLE PROPERTIES OF HE PLASTIC MATERIALS, IN WHICH THEY ARE CONTAINED, ARE NOT ADVERSELY AFECTED.

    Process for the polymerization of alpha-olefins
    2.
    发明授权
    Process for the polymerization of alpha-olefins 失效
    ALPHA-OLEFINS的聚合方法

    公开(公告)号:US3795662A

    公开(公告)日:1974-03-05

    申请号:US3795662D

    申请日:1972-09-22

    Applicant: HOECHST AG

    CPC classification number: C08F10/00 C08F4/646

    Abstract: THE INVENTION RELATES TO A PROCESS FOR THE POLYMERIZATION OF A-OLEFINS, FOR THE COPOLYMERIZATION OR BLOCK COPOLYMERIZATION OF THESE OLEFINS AMONG EACH OTHER, WITH OR WITHOUT ETHYLENE, IN THE PRESENCE OF A CATALYST SYSTEM CONSISTING OF A SOLID TITANIUM-CONTAINING REACTION PRODUCT OBTAINED BY THE REACTION OF TICL4 WITH AL(C2H5)2CL OR AL2(C2H5)3CL3, THE PRELIMINARY TREATMENT WITH A FURTHERP AMOUNT OF AL(C2H5)2CL AND THE SUBSEQUENT TREATMENT WITH ALKALI CHLORIDE IN THE ABSENCE OF THE MONOMER (S), AND OF A FURTHER AMOUNT OF AL(C2H5)2CL AS ACTIVATOR. THE PROCESS MAKES IT POSSIBLE TO PREPARE POLYOLEFINS HAVING A PARTICULARLY LOW ATACTIC PROPORTION, IN A HIGH SPACE-TIME YEILD.

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