Flame-retardant silane-crosslinked polyolefin composition

Abstract

Abstract PURPOSE:To provide the titled polyolefin compsn. at a good grafting efficiency, by reacting EVA contg. a specified flame retarder with an alkoxysilane compd. in the presence of a free radical generating agent and bringing the reaction product into contact with water in the presence of a silanol condensation catalyst. CONSTITUTION:0.5-10pts.wt. at least one member selected from basic magnesium carbonate, hydrotalcite, magnesium oxide and magnesium hydroxide is added to 100pts.wt. ethylene/vinyl acetate copolymer (EVA). The resulting resin compsn. is reacted with an alkoxysilane of the formula (wherein n=1-3) in the presence of a free radical generating agent. The reaction product is brought into contact with water in the presence of a silanol condensation catalyst. As the flame retarder, magnesium oxide is preferred because good grafting efficiency can be obtd. An example of the silanol condensation catalyst is dibutyltin dilaurate.

Inventors

• 👤 Hiroshi Hashimoto
• 👤 洋 橋本
• 👤 Kazumi Ito
• 👤 一己 伊藤
• 👤 Ichiro Nishikawa
• 👤 一郎 西川

Bibliographic Details