| 摘要 |
<p>A S-vulcanisable rubber compsn. contains SiO2 as reinforcing filler and a coupled and/or star-shaped diene polymer contg. 30-100 % of chains coupled and/or starred by means of an agent of formula (Y)m-R1-Si(OR2)3-n-R3n (I) . Y = (i) or (ii); R1 = 1-10 C alkyl, cycloalkyl or aryl; R2 = 1-12 C alkyl, aryl, cycloalkyl, alkaryl or aralkyl; R3 = 1-12 C alkyl, aryl or alkaryl; R4 = 1-6 C hydrocarbon gp., opt. with O atom(s) in the chain; n = 0 or 1; m = 1 or 2; p, q = 0-4; p + q = 2-5.</p> |
