Elastomeric formulations useful in films and sheets

摘要

An elastomeric composition, and method of making the same, useful for forming thin films and sheets, comprising 55-60% hydrogenated SEEPS having a number average molecular weight of 90,000 to 100,000, 7-12% polystyrene, 15-30% oil, and 5 to 20% of an aliphatic hydrogenated hydrocarbon resin.

主权项

1. An elastomeric composition, comprising:
55-60% by weight hydrogenated isoprene-1,3-butadiene (SEEPS) block copolymer; 7-12% by weight polystyrene; 15-20% by weight mineral oil; and 5-20% by weight of an aliphatic hydrogenated hydrocarbon resin; wherein a mass ratio of isoprene to 1,3-butadiene in the SEEPS block copolymer is from 54/46 to 56/44, a number average molecular weight of the SEEPS block copolymer is about 90,000 to 100,000, and the % by weight values are relative to a total weight of the composition.