| 摘要 |
PURPOSE:To provide a compsn. which has excellent moldability, produces molded articles having excellent mechanical strength and heat resistance and is suitable as a wire covering material, containing a copolymer of ethylene with an olefinically unsaturated silane, a silanol condensation catalyst and a flame retarder. CONSTITUTION:100pts.wt. copolymer (A) of ethylene with an olefinically unsaturated silane of the formula [wherein R is an ethylenically unsaturated hydrocarbyl (oxy) group; R' is an aliph. satd. hydrocarbyl group; Y is a hydrolyzable org. group; n is 0-2] such as vinyltrimethoxysilane, 0.001-10pts.wt. silanol condensation catalyst (B) (e.g. dibutyltin dilaurate) and 10-150pts.wt. flame retarder (C) (e.g. chlorinated paraffin or antimony trioxide) are kneaded together at a temp. not lower than the melting point of the above copolymer (A) to obtain the titled compsn. For example, an electrical wire is covered with the above compsn. and contacted with water or steam, whereby the compsn. is crosslinked to obtain the desired covered electrical wire. |
