公开(公告)号：WO2021249749A1

公开(公告)日：2021-12-16

申请号：PCT/EP2021/063664

申请日：2021-05-21

Applicant: BASF SE

Inventor： LICHT, Ulrike ,  HARTZ, Oliver ,  GEHRINGER, Lionel ,  BOCIEK, Sabine ,  RIES, Erich ,  AHLERS, Jürgen ,  DOHMEN, Stephan

IPC: B32B1/08 ,  B32B5/02 ,  B32B5/26 ,  B32B5/32 ,  B32B7/06 ,  B32B7/12 ,  B32B9/02 ,  B32B25/14 ,  B32B27/06 ,  B32B27/08 ,  B32B27/30 ,  B32B27/34 ,  B32B27/36 ,  B32B27/40 ,  B32B2250/02 ,  B32B2250/22 ,  B32B2255/26 ,  B32B2260/044 ,  B32B2260/046 ,  B32B2266/0278 ,  B32B2266/0292 ,  B32B2270/00 ,  B32B2274/00 ,  B32B2307/30 ,  B32B2307/56 ,  B32B2433/04 ,  B32B2437/02 ,  B32B2605/00 ,  B32B27/065 ,  B32B27/302 ,  B32B5/022 ,  B32B5/026 ,  B32B9/025

Abstract: A method is described for debonding a bonded article. The bonded article comprises at least two components which are bonded to one another by means of a polyurethane adhesive selected from aqueous polyurethane dispersion adhesives and polyurethane hotmelt adhesives. At least one of the components is a thermoplastic polyurethane. The components are debonded by treatment with an aqueous surfactant composition at elevated temperatures.