The present invention relates to a method for preparing homo- and co-polymers having high molecular weights in high yields by polymerizing cyclic olefin compounds using a complex prepared by mixing a nickel salt compound, an organoaluminoxane compound, and at least one organic boron compound.

 
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< Tire laminate bonded by contact metathesis

< Norbornene-based ring-opening polymerization polymer, product of hydrogenation of norbornene-based ring-opening polymerization polymer, and processes for producing these

> Peroxide curable compounds based on butyl-like polymer without conjugated aliphatic dienes in its composition

> Reworkable compositions of oxirane(s) or thirane(s)-containing resin and curing agent

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