Patent ID: 8916267

Claim:
An adhesive composition for separable adhesive bonds, comprising; an adhesive matrix; and an expansion material in particulate form, wherein the particles of the expansion material are at least partially encapsulated and/or coated by an encapsulation material and/or coating material, wherein the expansion material comprises an inorganic expansion material comprising expandable graphite (EG) or organic expansion material comprising azodicarbonamide (ADC), wherein the encapsulation material or coating material is selected from the group consisting of glass, ceramics, metals, metal oxides, organic-inorganic hybrid systems, melamine formaldehyde resin, parylene and cyanate-based polymer, wherein the encapsulation material or coating material of the encapsulated expansion material further comprises an active filler, and wherein the active filler is selected from the group consisting of ferromagnetic, ferromagnetic, superparamagnetic, piezoelectric materials, materials with high thermal capacity or mixtures thereof, barium titanate, ethylenediaminetartrate, potassium-sodium tartrate, lithium sulfate, sodium tartrate, quartz, tourmaline, ferroelectrics with perovskite structure, lead-zirconium titanate, aluminum, cobalt, iron, copper, nickel or their alloys, metal oxides of the type n-maghemite (y-Fe2O3), n-magnetite (Fe3O4), ferrites of the general formula MeFe2O4, in which Me stands for bivalent metals of the group cadmium, calcium, cobalt, copper, magnesium, manganese, nickel or zinc, beryllium, boron, calcium, graphite, potassium, magnesium, phosphorus or compounds of the aforementioned materials, aluminum oxide, aluminum chloride, calcium carbonate, calcium chloride, hematite, copper sulfate, magnetite, magnesium carbonate or magnesium chloride, phosphorus chloride, phosphorus oxide and mixtures thereof.