Olefin block composite thermally conductive materials

A thermally conductive material, consisting of:

• (a) from 60 wt % to 90 wt % of an olefin block composite comprising (1) a soft copolymer, (2) a hard copolymer, and (3) a block copolymer having a soft segment and a hard segment, wherein the soft segment of the block copolymer is the same composition as the soft copolymer and the hard segment of the block copolymer is the same composition as the hard copolymer;
• (b) from 10 wt % to 40 wt % of a thermally conductive filler selected from the group consisting of aluminum oxide (Al2O3), magnesium oxide (MgO), boron nitride (BN), zinc oxide (ZnO), silicon carbide (SiC), aluminum nitride (AlN), graphite, expanded graphite, multi-walled carbon nanotubes, carbon fiber, pyrolytic graphite sheets, silver, aluminum, copper, and mixtures of two or more thereof;
• (c) optionally a plasticizer;
• (d) optionally a curing agent;
• and
• (e) optionally one or more additives selected from the group consisting of antioxidants, cross linking co-agents, cure boosters, scorch retardants, processing aids, coupling agents, ultraviolet stabilizers, antistatic agents, nucleating agents, slip agents, lubricants, viscosity control agents, tackifiers, anti-blocking agents, surfactants, extender oils, acid scavengers, flame retardants, adhesion promoters, metal deactivators, and combinations thereof,
• wherein said thermally conductive filler is present in an amount sufficient to provide said thermally conductive material with a higher thermal conductivity relative to said olefin block composite in its neat state, and the weight percent is based on the combined weight of the olefin block composite and the thermally conductive filler.