any double emulsion in which the encapsulated phase is more hydrophilic in some embodiments or more apolar in other embodiments in nature than the hydrophobic or more apolar encapsulant phase additionally the term indicates that two emulsions are being formed the first is an initial hydrophilic in certain embodiments or more apolar in other embodiments phase suspended in an immiscible encapsulant phase which is then introduced into a final hydrophilic phase to arrive at the initial or encapsulated phase surrounded by the immiscible encapsulant phase suspended in the final hydrophilic phase in the case of hydrogen peroxide containing organosiloxane microcapsules the initial u201c water u201d phase is the aqueous hydrogen peroxide solution containing a small amount of an emulsion stabilizer the initial u201c oil u201d phase is the organosiloxane pre polymer curing agent in their carrier solvent and the final u201c water u201d phase is an aqueous polyvinyl alcohol solution in the oil microencapsulation embodiments the initial u201c water u201d phase is an apolar oil solution or suspension while the other phases remain unchanged the term u201c thermo mechanical u201d in any of its grammatical forms as used herein refers to thermal energy derived in any way e g via the heating of water by radiation in the microwave range that results in mechanical force the term u201c rupture strength u201d refers to the force required to break the microcapsule wall normalized by the cross sectional area upon which the force is acting the term u201c about u201d or u201c.