Crosslinking agent for adhesion to plastic

摘要

The present disclosure relates to an isocyanate terminated saturated hydrocarbon polymer that can be used as a crosslinking agent in a coating composition. The coating composition can provide a composition that adheres well to resinous substrates. Also provided are coating composition comprising the crosslinking agent and methods for producing the adherent coating composition.

主权项

1. A crosslinking agent comprising an isocyanate terminated saturated hydrocarbon polymer having a structure according to formula (I), formula (II) or a combination thereof; wherein; the isocyanate terminated saturated hydrocarbon polymer is the reaction product of a saturated hydrocarbon polymer with a polyisocyanate, wherein the saturated hydrocarbon polymer comprises functional groups selected from the group consisting of carboxyl groups, carbamate groups, hydroxyl groups, amino groups, epoxy groups, mercaptan groups, and combinations thereof; each x independently ranges from 1 to 10; each R is independently selected from the group consisting of a direct bond and a C1 to C8 alkyl group; each R1 is independently selected from the group consisting of an unsubstituted C3 to C20 carbocyclic group and a C3 to C20 carbocyclic group substituted with one or more C1 to C6 alkyl groups pendant the ring system; each R2 is independently selected from the group consisting of H and a C1 to C4 alkyl group; each R3 is independently a C3 to C20 carbocyclic group optionally substituted with one or more C1 to C6 alkyl groups; each A is selected from the group consisting of an isocyanurate group, an iminooxadiazine dione group, an allophanate group or a biuret group; and n ranges from 20 to 700.