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    Olefin copolymers and process for preparing same
    3.
    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.

    Terpolymers of ethylene,higher alpha-olefins and cycloalkadienonorbornenes
    5.
    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.

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