Styrenic block copolymers are increasingly being used in the production of elastomeric films for personal care and hygiene applications. In recent years, with severe fluctuation on the supply side regarding availability and price for isoprene, butadiene, and styrene monomers, manufacturers and end-users of block copolymers have searched for ways to reduce their costs and maintain high levels of elastic performance. This paper introduces a new family of styrene-isoprene-butadiene-styrene (SIBS) quad-or tetra-block polymers to produce lower cost high performance products when compared to styrene-isoprene-styrene (SIS) copolymers. These new SIBS quad-block polymers are compared to triblock polymers with mixed isoprene-butadiene S(I/B)S structures.
展开▼
