Ethylene-alfa-olefin copolymer resin composition



PROBLEM TO BE SOLVED: To obtain the subject resin composition excellent in transparency and resistance to weather by formulating a metal salt of cyclic organic phosphoric ester and an alkali metal compound to a specific ethylene-α-olefinic copolymer. SOLUTION: This copolymer resin composition is prepared by formulating (B) 0.01-5 pts.wt. of a metal salt of cyclic organic phosphoric ester of formula I [R 1 is H, a 1-4C alkyl; R 2 and R 3 are each H, a 1-12C alkyl, an aryl; M is a metal in groups Ill and IV of the periodic table; X is -OH in the case that M is a metal in group III or 0=, (HO) 2 - in the case that M is a metal in group IV] and (C) 0.005-5 pts.wt. of an alkali metal carboxylate, an alkali metal β- diketonate, an alkali metal β-ketoacetate and an alkali metal compound selected from the group of metal-modified hydrotalcite of formula II (M is an alkali metal; 0<x≤8; y is 0-6; z is 2-6; n is 0-30) to (A) 100 pts.wt. of an ethylene-α- olefin copolymer which is obtained by copolymerization of' ethylene and an αolefin of 3-12 carbon atoms and has a melt flow rate of 0.01-20g/10 minutes and a density of 0.860-0.940g/cm 3 . COPYRIGHT: (C)1998,JPO
(57)【要約】 【課題】 透明性の改善されたエチレン・α−オレフィ ン共重合体樹脂組成物を提供する。 【解決手段】 (A)エチレンと所定のα−オレフィン とを共重合させて得られる(a)メルトフローレイト 0.01〜20g/10分、(b)密度0.860〜 0.940g/cm 3 のエチレン・α−オレフィン共重 合体100重量部に対し、(B)下記一般式(I)で表 される環状有機リン酸エステル金属塩0.01〜5重量 部と、(C)アルカリ金属カルボン酸塩、アルカリ金属 β−ジケトナート、アルカリ金属β−ケト酢酸エステル 塩及び下記一般式(II)で表されるアルカリ金属変性ハ イドロタルサイトの群から選択されるアルカリ金属化合 物の1種以上0.005〜5重量部とを配合してなるエ チレン・α−オレフィン共重合体樹脂組成物。 【化1】




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