×

Polymerized cycloolefins using transition metal catalyst and end products thereof

  • US 20040048994A1
  • Filed: 06/18/2003
  • Published: 03/11/2004
  • Est. Priority Date: 10/05/1998
  • Status: Active Grant
First Claim
Patent Images

1. An article, comprising:

  • an optical layer comprising an optical polymer containing polycyclic repeating units, said optical polymer obtained by polymerizing at least one polycycloolefin monomer in the presence of a high activity Group 10 transition metal catalyst complex of the formula;

    [(R

    )zM(L

    )x(L

    )y]b [WCA]d to obtain a polymer product that contains 100 ppm or less of residual Group 10 transition metal prior to purification, wherein [(R

    )zM(L

    )x(L

    )y] is a cation complex where M represents a Group 10 transition metal;

    R′

    represents an anionic hydrocarbyl containing ligand;

    L

    represents a Group 15 neutral electron donor ligand;

    L

    represents a labile neutral electron donor ligand;

    x is 1 or 2; and

    y is 0, 1, 2, or 3; and

    z is 0 or 1, wherein the sum of x, y, and z is 3 or 4;

    [WCA] represents a weakly coordinating counteranion complex; and

    b and d are numbers representing the number of times the cation complex and weakly coordinating counteranion complex are taken to balance the electronic charge on the overall catalyst complex.

View all claims
  • 2 Assignments
Timeline View
Assignment View
    ×
    ×