Abstract: A sound damping composition which includes a plasticizer and at least one unsaturated block copolymer having a mono alkenyl arene content of equal to or greater than 60 weight percent and a modulus of less than 125,000 psi. The plasticizer is an aromatic ester or a liquid aromatic resin. The sound damping composition is characterized by having improved sound damping characteristics over sound damping composition employing block copolymers containing conjugated diene homopolymer elastomeric blocks.

Abstract: The present invention relates to gels prepared from novel anionic block copolymers of aromatic vinyl compounds and conjugated dienes. The block copolymers include a high molecular weight linear and/or radial block copolymer component (SBC1 and/or SBC2), and a diblock component (E1). The block copolymer may be combined with tackifying resins, oils and other components to form the gels of the present invention.

Abstract: The present invention relates to photocurable compositions for use in flexographic printing plates comprising selectively hydrogenated block copolymers of conjugated dienes and monoalkenyl arenes and flexographic printing plates made from the same. The block copolymers, either linear or radial, have terminal blocks of unsaturated conjugated diene. The block copolymer is further comprised of monoalkenyl arene blocks and hydrogenated conjugated diene blocks. The compositions exhibit exceptional improvement in degree of cure over comparative selectively hydrogenated block copolymers.