Triblock polymer having a diene central block rich in ethylene and two terminal blocks, respectively polystyrene and polyethylene

Abstract

Triblock polymers of formula A-B-C, in which the symbol A represents a polystyrene block, and the symbol B represents a statistical copolymer block with a glass transition temperature of less than-10° C., are provided. The statistical copolymer comprises units of a 1,3-diene and more than 50 mol % of ethylene units. The symbol C represents a polyethylene block with a melting temperature of greater than 90° C. The triblock polymers exhibit good elastic recovery.

Dependencies are inferred from the claim text.