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    Terpolymers of ethylene,higher alpha-olefins and cycloalkadienonorbornenes
    3.
    发明授权
    Terpolymers of ethylene,higher alpha-olefins and cycloalkadienonorbornenes 失效
    乙烯的高分子量，较高的α-烯烃和环己烷二酮

    公开(公告)号：US3470142A

    公开(公告)日：1969-09-30

    申请号：US50235865

    申请日：1965-10-22

    Applicant: MONTEDISON SPA

    Inventor： SARTORI GUIDO ,  CAMELI NAZZARENO ,  VALVASSORI ALBERTO

    IPC: C08F210/00 ,  C08F15/40 ,  C08F27/00

    CPC classification number: C08F210/00

    Abstract: Copolymers of a cycloalkadienonorbornene and, optionally dicyclopentadiene with ethylene and an aliphatic alpha olefin of the general formula R-CH = CH2, where R is a C1 to C6 alkyl group are made by copolymerizing a mixture of the monomers in the presence of a halogen-containing catalyst obtained from a vanadium compound and beryllium or aluminium organometallic compounds. The Specification contains long lists of suitable catalyst components. The preferred norbornene is 5,6-cyclododecadieno - 41,81 - norbornene - 2, and the alpha-olefin, propylene and/or butene-1. The catalyst preparation and the copolymerization are preferably effected between 0 DEG and - 80 DEG C. The copolymerization may be carried out in bulk, or in a hydrocarbon or halogenated hydrocarbon solvent. The copolymers, soluble in boiling n-heptane, are recovered by conventional low-pressure techniques. The copolymers may be sulphur vulcanized and are then insoluble in organic solvents.

    Olefin copolymers and process for preparing same
    6.
    发明授权
    Olefin copolymers and process for preparing same 失效
    烯烃共聚物及其制备方法

    公开(公告)号：US3585173A

    公开(公告)日：1971-06-15

    申请号：US3585173D

    申请日：1965-11-10

    Applicant: MONTEDISON SPA

    Inventor： NATTA GIULIO ,  MAZZANTI GIORGIO ,  VALVASSORI ALBERTO ,  SARTORI GUIDO ,  CAMELI NAZZARENO

    IPC: C08F210/00 ,  C08F15/40

    CPC classification number: C08F210/00

    Abstract: THERE ARE DISCLOSED HIGH-MOLECULAR WEIGHT COPOLYMERS AND MORE PARTICULARLY SUBSTANTIALLY LINEAR, AMORPHOUS COPOLYMERS OF A METHYL-SUBSTITUTED TETRAHYDROINDENE AND AT LEAST ONE MONOMER SELECTED FROM THE GROUP CONSISTING OF ETHYLENE AND HIGHER ALPHA-OLEFINS OF THE GENERAL FORMULA R-CH=CH2 IN WHICH R IS AN ALKYL GROUP CONTAINING FROM 1 TO 6 CARBON ATOMS, WHICH ARE CAPABLE OF BEING VULCANIZED. THERE IS ALSO DISCLOSED A PROCESS FOR PREPARING THE LINEAR, AMORPHOUS, HIGH MOLECULAR WEIGHT COPOLYMERS CAPABLE OF BEING VULCANIZED. THE PROCESS COMPRIESES THE USE OF CATALYSTS ACTING WITH A COORDINATED ANIONIC MECHANISM.

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