Heat-accumulating microcapsule dispersion includes a microcapsule provided as a small-diameter heat-accumulating material including organic compound functioning as heat accumulating material in association with a phase change thereof accommodated within a microcapsule, heat transfer fluid medium including...http://www.google.es/patents/US5916478?utm_source=gb-gplus-sharePatente US5916478 - Heat-accumulating microcapsule dispersion
