Polyesters are an invaluable material used today and are considered more recyclable-by-design and biodegradable than polyolefins. Disclosed herein are methods for up-cycling of polyethylene (PE) to aliphatic polyesters via a two-step oxidative approach. The first step converts PE to a polyketone via a mild oxidation with a radical initiator, solvent, O.sub.2, and cobalt catalyst. The second step converts the resulting ketone functionality to the ester via a Baeyer-Villiger oxidation.

Provided is a one-component composition that can be cured in a short time and can provide a furan resin cured product having excellent heat resistance and electric property, the furan resin cured product, and a kit that can provide the furan resin cured product. One aspect of the embodiment is a one-component composition that comprises a furan resin, an acid scavenger, and an acid catalyst in which the acid scavenger comprises an epoxy resin.

A composition contains an organosilyl-functional polyester, where the organosilyl-functional polyester is characterized by having multiple terminal carbon-carbon double bonds bound to the polyester through a carbon-oxygen-silicon linkage.