公开(公告)号：US20170174941A1

公开(公告)日：2017-06-22

申请号：US15371436

申请日：2016-12-07

Applicant: The Swatch Group Research and Development Ltd

Inventor： Claire RANNOUX ,  Maria FERNANDEZ CIURLEO

IPC: C09J5/04 ,  B32B7/12 ,  G04B37/22 ,  C09J5/06

Abstract: An assembly of timepiece parts assembled together with an adhesive at a temperature TA and to be repositioned when the adhesive is at a temperature TC. The adhesive includes a formulation, which at TC includes a mixture of polymer chains with pendant diene units X and coupling molecules including two dienophile end groups Y, wherein the X units and the Y groups are arranged to react with one another and to bond together with the Diels-Alder reaction at a temperature TDA and to regenerate with the retro-Diels-Alder reaction at a temperature TRDA, at TA forms a three-dimensional network, in which the polymer chains are linked to one another by the coupling molecules with the Diels-Alder reaction, where TA