Patent ID: 7838598

Claim:
A composition to be used for the manufacture of transparent, gel-free films, comprising: a) at least 65 wt % of a styrenic block copolymer, having a molecular structure according to the formula S—(I/B)—S (1) or [S—(I/B)] n X (2), wherein each S independently is a polymer block of predominantly styrene and (I/B) is a substantially random polymer block of predominantly isoprene and butadiene in a mutual weight ratio in the range of from 30/70 to 70/30, wherein said polymer block (I/B) has a glass transition temperature (Tg) of at most −60° C. (determined according to ASTM E-1356-98), wherein n is an integer equal to or greater than 2, and wherein X is the residue of a coupling agent, wherein said styrenic block copolymer having a poly(styrene) content in the range of from 28 to 31% by weight, having poly(styrene) blocks S of a true molecular weight in the range of from 10,000 to 15,000, having an apparent molecular weight of the complete block copolymer in the range of from 110,000 to 160,000 and wherein the diblock S—(I/B) optionally occurs in a content of at most 20 mol %, b) from 5 to 25 wt % of a second thermoplastic resin selected from poly(styrene), polyethylene, polypropylene or copolymers of ethylene and propylene, c) from 0 to 10 wt % of a plasticizing oil, the sum of the percentages of the components a, b and c being 100%, and all weight percentages being relative to the weight of the complete composition.