Nickel-based catalyst composition

Nickel-based catalyst composition

  • CN 104,356,263 B
  • Filed: 04/10/2008
  • Issued: 05/12/2020
  • Est. Priority Date: 04/10/2007
  • Status: Active Grant
First Claim
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1. A method for forming a conjugated diene polymer, the method comprising the steps of:

  • polymerizing conjugated diene monomer in the presence of a catalytically effective amount of a catalyst composition formed by combining;

    (a) a nickel-containing compound;

    (b) an alkylating agent;

    (c) a fluorine-containing compound; and

    (d) a carboxylic acid; and

    (e) alcohol(s)Wherein the nickel-containing compound is selected from the group consisting of nickel carboxylates, nickel organophosphates, nickel organophosphonates, nickel organophosphonites, nickel carbamates, nickel dithiocarbamates, nickel xanthates, β

    -diketonates, nickel alkoxides or aryloxides, nickel halides, nickel pseudohalides, nickel oxyhalides and organonickel compounds containing at least one nickel-carbon bond,wherein a mixture of the alkylating agent, the nickel-containing compound, the carboxylic acid and the alcohol is formed and then the mixture and the fluorine-containing compound are added to the monomer to be polymerized.

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