Use of an adhesion promoter in a seal encapsulates aqueous adhesive bonding two substrates of which at least comprises a material (TPE-PA)

The present invention relates to the use of an adhesion promoter encapsulated in an effective amount in an aqueous adhesive bond, said aqueous adhesive bond being for bonding a surface of a first substrate (S1) to a surface of a second substrate (S2), one of said at least two substrates comprising a material (TPE-PA) comprising at least one thermoplastic elastomer (TPE) and / or at least one polyamide (PA), said adhesion promoter (P) comprising at least one organic molecule comprising at least one isocyanate function blocked by encapsulating said organic molecule.