Processes for producing cyclic olefins from polymers and re-polymerization thereof

A process comprising:

• introducing an unsaturated polymer to a metathesis catalyst and an isomerization catalyst in a reaction vessel under reaction conditions, wherein the metathesis catalyst is different than the isomerization catalyst;
• and
• obtaining a product comprising one or more cyclic olefins.

A method comprising:

• introducing a volatile cyclic monoolefin, chemically recycled from an unsaturated polymer in the presence of a metathesis catalyst and optionally an isomerization catalyst, to a metathesis catalyst in a reaction vessel under polymerization reaction conditions and producing a product that includes a high molecular weight polymer characterized by a molecular weight greater than 400 kDa, wherein the metathesis catalyst for the polymerization process includes ruthenium.