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Abstract

The present disclosure provides polymers prepared by a method comprising reacting a polymerization mixture comprising one or more types of hydroxy/amino-oximes, one or more types of diols, one or more types of polyols (e.g., triols), one or more types of isocyanates, and optionally one or more types of oximes. At least one instance of =N—OH of at least one instance of the hydroxy/amino-oximes may react with —NCO of the isocyanates to form ═N—O—C(═O)—NH— bonds. The polymers may be a thermoset under ambient conditions. At elevated temperatures, the polymers may undergo a transition from a cross-linked state to a lightly cross-linked or un-crosslinked state (e.g., at least in part because at least one instance of the =N—O—C(═O)—NH— bonds may be cleaved (e.g., to form ═N—OH and —NCO)). The transition may be reversable (e.g., by changing the temperature). The polymers of the present disclosure may be useful as hot melt adhesives. The present disclosure also provides compositions, kits, methods of preparation, methods of bonding, and methods of de-bonding.

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First Claim