A rubbery copolymer of butadiene, styrene and acrylonitrile, if desired, with a tensile strength of about 50 to about 100 psig containing a minor amount of styrene, particularly in {HEAD ~ combination} with {TAIL ~ selective tackifier resins} 
with
A rubbery copolymer of butadiene , styrene and acrylonitrile , if desired , with a tensile strength of about 50 to about 100 psig containing a minor amount of styrene , particularly in { HEAD ~ combination } with { TAIL ~ selective tackifier resins }
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