Patent ID: 11091628

Abstract:
A filling composition is disclosed, the composition comprises (i) between 4 to 20 wt. % of a selectively hydrogenated isoprene-styrene block copolymer having a structure S-EP with at least 40 wt. % polystyrene content, a total diblock apparent molecular weight of at least 160 kg/mole, the polystyrene block S has a true molecular weight in the range of 60 to 110 kg/mole, and the polyisoprene block (EP) has a molecular weight in the range of 80-100 kg/mole, (ii) an oil, and (iii) optional additives. The filling composition is characterized as having a thixotropic ratio of 2-10, a drop point of at least 200° C., and a cone penetration at 25° C. of <500 dmm.