The present invention discloses a thermoplastic elastomer composition
which is comprised of (a) a thermoplastic resin selected from the group
consisting of polyolefin resin, polyphenylene ether, and polystyrene,
wherein the thermoplastic resin is present at a level of up to 60 parts
by weight, (b) 5 to 90 parts by weight of a rubbery elastomer that is
comprised of repeat units that are derived from a conjugated diene
monomer selected from 1,3-butadiene and isoprene, wherein the repeat
units in the rubbery polymer are distributed through the rubbery polymer
in an essentially random manner, wherein the rubbery polymer is a
solution polymer, and is optionally, at least partially crosslinked, (c)
5 to 90 parts by weight of a highly saturated elastomer selected from the
group consisting of styrene-ethylene butylene-styrene, styrene-ethylene
propylene-styrene, hydrogenated polybutadiene, hydrogenated polyisoprene,
hydrogenated styrene-isoprene random copolymers, hydrogenated
styrene-isoprene block copolymers, hydrogenated styrene-butadiene random
copolymers, hydrogenated styrene-butadiene block copolymers, hydrogenated
styrene-isoprene block copolymers, and hydrogenated
styrene-isoprene/butadiene-styrene block copolymer, and (d) 15 to 600
parts by weight of an oil.