DIENE RUBBER COMPOSITION

摘要

PURPOSE:To provide a diene rubber cmpsn. having excellent fatigue characteristics and suitable for truck tire, by blending a diene polymer rubber whose polymer chain contains a tert-amino group-contg. compd. with a diene rubber. CONSTITUTION:A conjugated diolefin such as butadiene or isoprene, or a mixture thereof with an arom. vinyl-substd. hydrocarbon such as styrene is copolymerized with a tert-amino group-contg. compd. such as dimethylaminoethyl styrene or 2-vinylstyrene in the presence of an organolithium polymn. initiator to prepare a diene polymer rubber whose polymer chain contains 1-30wt% tert- amino group-contg. compd. Then at least 10wt% said diene polymer rubber is blended with netural rubber or a diene rubber such as an acrylonitrile/butadiene rubber.