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Cyclic conjugated diene polymer and method of producing same

  • US 5,792,824 A
  • Filed: 12/08/1995
  • Issued: 08/11/1998
  • Est. Priority Date: 05/21/1993
  • Status: Expired due to Term
First Claim
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1. A cyclic conjugated diene polymer comprising a main chain represented by the following formula (I):

  • ##STR12## wherein A to E are monomer units constituting said main chain in which monomer units A to E are arranged in any order, and l to p are, respectively, weight percentages of monomer units A to E, based on the total weight of monomer units A to E;

    wherein;

    A is selected from the class consisting of cyclic conjugated diene monomer units each being independently represented by the following formula (III);

    ##STR13## wherein each R2 independently represents a hydrogen atom, a halogen atom, a C1 -C20 alkyl group, a C2 -C20 unsaturated aliphatic hydrocarbon group, a C5 -C20 aryl group, a C3 -C20 cycloalkyl group, a C4 -C20 cyclodienyl group or a 5 to 10-membered heterocyclic group having at least one nitrogen, oxygen or sulfur atom as a heteroatom,B is selected from the class consisting of chain conjugated diene monomer units,C is selected from the class consisting of vinyl aromatic monomer units,D is selected from the class consisting of polar monomer units, andE is selected from the class consisting of an ethylene monomer unit and α

    -olefin monomer units; and

    wherein;

    l to p satisfy the following requirements;

    
    
    space="preserve" listing-type="equation">l+m+n+o+p=100,

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