Precise control of molecular weight and chain shape control in carbon dioxide/epoxide alternating copolymerization and preparation of low molecular weight poly(alkylene carbonate) thereby

  • US 9,023,979 B2
  • Filed: 06/26/2013
  • Issued: 05/05/2015
  • Est. Priority Date: 04/06/2010
  • Status: Active Grant
First Claim
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1. A poly(alkylene carbonate) represented by Formula 10 below:

  • J[L-{CR81R82






    [Formula 10]wherein L is —



    c is 2;

    J is para-phenyl meta-phenylene, ortho-phenylene or 2,6-naphthalenediyl;

    R81 R84 are each independently hydrogen;

    (C1-C10)alkyl substituted or unsubstituted with halogen or (C1-C20) alkoxy;

    or (C6-C12)aryl substituted or unsubstituted with halogen or (C1-C20)alkoxy, R81 to R84 being able to be linked with each other to form a ring; and

    a value obtained by multiplying d by c is a natural number of 1000 or less.

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