To obtain the subject composition having high crosslinking rate, excellent productivity, crosslinkability with hot air and useful for production of car weather strips by using a specified ethylene/α-olefin/unconjugated polyene random copolymer rubber and a specified compound having an SiH group.
This composition comprises (A) an ethylene/α-olefin/unconjugated polyene random copolymer rubber having (i) constituent units of unconjugated polyene derived from a norbornene compound having at least one terminal vinyl group and represented by formula I (n is 0-10; R1 is H or a 1-10C alkyl; R2 is H or a 1-5C alkyl) or formula If (R is H or a 1-10C alkyl) and (ii) constituent units derived from an unconjugated polyene compound having a group represented by formula III (R4 is a 1-10C alkyl; R5 and R6 are each H or a 1-10C alkyl), (B) an SiH group-containing compound having at least two SiH groups in amolecule and, preferably, (C) a catalyst.
KIKUCHI YOSHIHARU
KAWASAKI MASAAKI
NAKAMURA TSUTOMU
HIRABAYASHI SADAO
YOSHIDA TAKEO
SHINETSU CHEMICAL CO
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