Abstract: The present disclosure provides compounds of the formula (I): The present disclosure also provides copolymers prepared by polymerizing a first monomer (e.g., dicyclopentadiene) and the compounds. The copolymers may show increased degradability and increased or maintained glass-transition temperature, as compared to homopolymers of the first monomer.

Abstract: The present disclosure provides compositions comprising: a) a copolymer prepared by a method comprising polymerizing in the presence of a metathesis catalyst: i) a first monomer, wherein each instance of the first monomer is independently of the formula: or salt thereof; ii) a second monomer, wherein each instance of the second monomer is independently of the formula: or a salt thereof; iii) optionally a third monomer, wherein the third monomer is different from the first monomer and the second monomer; and iv) optionally a reprocessing catalyst; and b) optionally the reprocessing catalyst; wherein the reprocessing catalyst is a Brønsted acid, Lewis acid, Brønsted base, Lewis base, or a salt thereof; provided that the composition comprises at least one of the reprocessing catalyst of iv) and the reprocessing catalyst of b). The compositions may be reprocessed (e.g., remolded) under elevated temperature and/or elevated pressure.

Abstract: The present disclosure describes functional oligomers or functional polymers. The functional oligomers or functional polymers may contain functional groups, e.g., —OH and/or —CHO. The functional oligomers or functional polymers may be obtained from hydrolyzing certain copolymers and may be soluble in commercially available solvents. The copolymers may be thermosetting polymers. The functional oligomers and functional polymers may be useful for recycling thermosetting polymers and may be useful as starting materials for preparing additional oligomers or polymers.