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<TRDA?TC, where temperature TDA ranges between 0° C. and 100° C. and temperature TRDA ranges between 50° C. and 200° C., and TDA is strictly lower than TRDA.

Abstract: A watchmaking gasket, in particular a watch glass gasket for a timepiece, includes a polymer matrix charged with phosphorescent and/or fluorescent pigments.

Abstract: A watchmaking gasket, in particular a watch glass gasket for a timepiece, includes a polymer matrix charged with phosphorescent and/or fluorescent pigments.

Abstract: The invention relates to a process for assembling and repositioning at least two parts by means of a repositionable hot melt adhesive, wherein said parts are held together in assembled position when said adhesive is at a temperature TA and can be repositioned in relation to one another when said adhesive is heated to a temperature TC, wherein said adhesive comprises at least a formulation, which: at the temperature TC has the form of a mixture of polymer chains comprising at least pendant diene units X and of coupling molecules comprising at least two dienophile end groups Y, wherein said X units and said Y groups are arranged to be able to react with one another and to bond together by means of the Diels-Alder reaction at a temperature TDA and to be able to regenerate by means of the retro-Diels-Alder reaction at a temperature TRDA, at a temperature TA has the form of a three-dimensional network, in which the polymer chains are linked to one another by the coupling molecules by means of the Diels-Alder re

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<TRDA?TC, where temperature TDA ranges between 0° C. and 100° C. and temperature TRDA ranges between 50° C. and 200° C., and TDA is strictly lower than TRDA.

Abstract: The invention relates to a process for assembling and repositioning at least two parts by means of a repositionable hot melt adhesive, wherein said parts are held together in assembled position when said adhesive is at a temperature TA and can be repositioned in relation to one another when said adhesive is heated to a temperature TC, wherein said adhesive comprises at least a formulation, which: at the temperature TC has the form of a mixture of polymer chains comprising at least pendant diene units X and of coupling molecules comprising at least two dienophile end groups Y, wherein said X units and said Y groups are arranged to be able to react with one another and to bond together by means of the Diels-Alder reaction at a temperature TDA and to be able to regenerate by means of the retro-Diels-Alder reaction at a temperature TRDA, at a temperature TA has the form of a three-dimensional network, in which the polymer chains are linked to one another by the coupling molecules by means of the Diels-Alder re

Abstract: A method of manufacturing an inlaid ceramic element for a timepiece including: a) forming a ceramic or cermet body; b) etching at least one recess in one face of the ceramic or cermet body, each at least one recess forming a pattern cavity for a decoration; c) changing a surface state of a bottom of the at least one recess to increase contact surface thereof; d) filling the at least one recess with a composite ceramic to form the decoration; e) flattening the composite ceramic so that the composite ceramic remains only in a hollow of the at least one recess.

Abstract: A method of manufacturing an inlaid ceramic element for a timepiece including: a) forming a ceramic or cermet body; b) etching at least one recess in one face of the ceramic or cermet body, each at least one recess forming a pattern cavity for a decoration; c) changing a surface state of a bottom of the at least one recess to increase contact surface thereof; d) filling the at least one recess with a composite ceramic to form the decoration; e) flattening the composite ceramic so that the composite ceramic remains only in a hollow of the at least one recess.