| 摘要 |
PROBLEM TO BE SOLVED: To obtain a crosslinked molded product which has low hardness, excellent tensile properties and rubber properties and is useful as a pipe by subjecting a specific olefinic polymer mixture and an organosilane to graft reaction, molding the graft reaction product and crosslinking the molded product with sialne and water. SOLUTION: (A) An ethylene-α-olefin copolymer (for example, an ethylene- propylene copolymer having 20-35wt.% of propylene content), (B) a polypropylene (for example, a propylene-ethylene block copolymer having 2-9wt.% ethylene content) and (C) an organosilane (for example, an ethylenically unsaturated silane) are allowed to react with each other in the presence of (D) a free-radical initiator. The reaction product is molded in a prescribed form and the molded product is exposed to moisture in the presence of (E) a silanol condensation catalyst (for example, an organotin compound).
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