JP4324401B2 - Dicarboxylic acid-modified polypropylene - Google Patents

Description

【００２７】
【化２】

【００２８】
一般式（１）中、ＸはＦ、Ｃｌ、Ｂｒ、Ｉ、炭素数１〜１０の炭化水素基または炭素数１〜８のアルコキシ基；Ｒ^１〜Ｒ^３は、それぞれ炭素数１〜４のアルキル基を示し、一般式（２）中、ＸはＦ、Ｃｌ、Ｂｒ、Ｉ、炭素数１〜１０の炭化水素基または炭素数１〜８のアルコキシ基；Ｒは、炭素数１〜４のアルキル基を示す。
【００２９】
上記成分の使用量は、α−オレフィン及びアルカジエニルアルコールモノマーの合計使用量（以下、単にモノマー使用量という）１モル当り、バナジウム錯体が１×１０^−５〜０．１モル、好ましくは１×１０^−４〜５×１０^−２モルであり、有機アルミニウム化合物が１×１０^−４〜０．１モル、好ましくは５×１０^−３〜０．０５モルである。
【００３０】
また、▲１▼の触媒には、必要に応じて電子供与体を添加することもでき、電子供与体としては、アルコール類、フェノール類、ケトン類、アルデヒド類、カルボン酸、マロン酸、有機酸もしくは無機酸のエステル類、モノエーテル、ジエーテルもしくはポリエーテル等の含酸素電子供与体や、アンモニア、アミン、ニトリル、イソシアネート等の含窒素電子供与体を挙げることができる。電子供与体の使用量は、バナジウム錯体１モルに対して０．０１〜２０モルである。
【００３１】
共重合反応は、−１００〜１００℃の温度で０．５〜５０時間、好ましくは−９０〜５０℃で１〜３０時間、さらに好ましくは−８０〜３０℃で１〜１５時間行われる。得られるポリオレフィン共重合体の分子量、分子量分布及び収量は、反応温度及び反応時間をコントロールすることにより調節できる。
【００３２】
前記▲２▼の触媒において、Ｔｉ、Ｚｒ、Ｈｆのアルコキシ錯体及び／又はＴｉ、Ｚｒ、Ｈｆのアルキルアミノ錯体とアルミノキサン類、ホウ素化合物又は有機アルミニウム化合物からなる触媒としては、例えばＭ（ＯＲ）_ａＸ_４−ａ、Ｍ（ＮＲ_２）_ａＸ_４−ａ、Ｍ（ａｃａｃ）_２Ｘ_２が挙げられる（ＭはＴｉ、Ｚｒ、Ｈｆ、ａは２〜４の整数、Ｘは、Ｆ、Ｃｌ、Ｂｒ、Ｉ、Ｒは炭素数１〜１０の炭化水素基、ａｃａｃはアセチルアセトン配位子、メチルブタンジオン配位子、ブタンジオン配位子、ベンゾイルアセトン配位子、ベンゾイルトリフルオロアセトン配位子、ジベンゾイルメタン配位子、フロイルアセトン配位子、トリフルオロアセチルアセトン配位子、３−フェニルアセチルアセトン配位子、２，４−ヘキサンジオン配位子、トリフルオロジメチル−２，４−ヘキサンジオン配位子等を表わす。）。
【００３３】
具体的な化合物としては、Ｔｉ（ＯＣ_２Ｈ_５）_４、Ｔｉ（Ｏ−ｎ−Ｃ_３Ｈ_７）_４、Ｔｉ（Ｏ−ｉ−Ｃ_３Ｈ_７）_４、Ｔｉ（Ｏ−ｎ−Ｃ_４Ｈ_９）_４、Ｔｉ（Ｏ−ｉ−Ｃ_４Ｈ_９）_４、Ｔｉ（Ｏ−ｓ−Ｃ_４Ｈ_９）_４、Ｔｉ（Ｏ−ｔ−Ｃ_４Ｈ_９）_４、Ｔｉ（Ｏ−ｃｙｃｌｏＣ_５Ｈ_９）_４、Ｔｉ（ＯＣ_５Ｈ_１１）_４、Ｔｉ（ＯＣ_６Ｈ_５）_４、Ｔｉ（Ｏ−ｃｙｃｌｏＣ_６Ｈ_１１）_４、Ｔｉ（ＯＣ_６Ｈ_１３）_４、Ｔｉ（ＯＣ_２Ｈ_５）_２Ｃｌ_２、Ｔｉ（Ｏ−ｉ−Ｃ_３Ｈ_７）_２Ｃｌ_２、Ｔｉ（Ｏ−ｎ−Ｃ_３Ｈ_７）_２Ｂｒ_２、Ｔｉ（Ｏ−ｎ−Ｃ_４Ｈ_９）_２Ｃｌ_２、Ｔｉ（Ｏ−ｉ−Ｃ_４Ｈ_９）_２Ｂｒ_２、Ｔｉ（Ｏ−ｓ−Ｃ_４Ｈ_９）_２Ｉ_２、Ｔｉ（ＯＣ_５Ｈ_１１）_２Ｃｌ_２、Ｔｉ（Ｏ−ｃｙｃｌｏＣ_６Ｈ_１１）_２Ｆ_２、Ｔｉ［Ｎ（Ｃ_２Ｈ_５）］_４、Ｔｉ［Ｎ（ｎ−Ｃ_３Ｈ_７）］_４、Ｔｉ［Ｎ（ｉ−Ｃ_３Ｈ_７）］_４、Ｔｉ［Ｎ（ｎ−Ｃ_４Ｈ_９）］_４、Ｔｉ［Ｎ（ｉ−Ｃ_４Ｈ_９）］_４、Ｔｉ［Ｎ（ｓ−Ｃ_４Ｈ_９）］_４、Ｔｉ［Ｎ（ｔ−Ｃ_４Ｈ_９）］_４、Ｔｉ［Ｎ（ｃｙｃｌｏＣ_５Ｈ_９）］_４、Ｔｉ［Ｎ（Ｃ_５Ｈ_１１）］_４、Ｔｉ［Ｎ（Ｃ_６Ｈ_５）］_４、Ｔｉ［Ｎ（ｃｙｃｌｏＣ_６Ｈ_１１）］_４、Ｔｉ［Ｎ（Ｃ_６Ｈ_１３）］_４、Ｔｉ［Ｎ（Ｃ_２Ｈ_５）_２］_２Ｃｌ_２、Ｔｉ［Ｎ（ｎ−Ｃ_３Ｈ_７）_２］_２Ｃｌ_２、Ｔｉ［Ｎ（ｉ−Ｃ_３Ｈ_７）_２］_２Ｂｒ_２、Ｔｉ［Ｎ（ｓ−Ｃ_４Ｈ_９）_２］_２Ｃｌ_２、Ｔｉ［Ｎ（ｎ−Ｃ_４Ｈ_９）_２］_２Ｂｒ_２、Ｔｉ［Ｎ（ｔ−Ｃ_４Ｈ_９）_２］_２Ｉ_２、Ｔｉ［Ｎ（Ｃ_５Ｈ_１１）_２］_２Ｆ_２、Ｔｉ［Ｎ（Ｃ_５Ｈ_１１）_２］_２Ｃｌ_２、Ｔｉ（アセチルアセトナト）_２Ｃｌ_２、Ｔｉ（メチルブタンジオナト）_２Ｃｌ_２、Ｔｉ（ブタンジオナト）_２Ｃｌ_２、Ｔｉ（ベンゾイルアセトナト）_２Ｂｒ_２、Ｔｉ（ベンゾイルトリフルオロアセトナト）_２Ｆ_２、Ｔｉ（ジベンゾイルメタナト）_２Ｉ_２、Ｔｉ（フロイルアセトナト）_２Ｂｒ_２、Ｔｉ（トリフルオロアセチルアセトナト）_２Ｂｒ_２、Ｔｉ（２，４−ヘキサンジオナト）_２Ｃｌ_２、Ｚｒ（ＯＣ_２Ｈ_５）_４、Ｚｒ（Ｏ−ｎ−Ｃ_３Ｈ_７）_４、Ｚｒ（Ｏ−ｉ−Ｃ_３Ｈ_７）_４、Ｚｒ（Ｏ−ｎ−Ｃ_４Ｈ_９）_４、Ｚｒ（Ｏ−ｉ−Ｃ_４Ｈ_９）_４、Ｚｒ（Ｏ−ｓ−Ｃ_４Ｈ_９）_４、Ｚｒ（Ｏ−ｔ−Ｃ_４Ｈ_９）_４、Ｚｒ（Ｏ−ｃｙｃｌｏＣ_５Ｈ_９）_４、Ｚｒ（ＯＣ_５Ｈ_１１）_４、Ｚｒ（ＯＣ_６Ｈ_５）_４、Ｚｒ（Ｏ−ｃｙｃｌｏＣ_６Ｈ_１１）_４、Ｚｒ（ＯＣ_６Ｈ_１３）_４、Ｚｒ（ＯＣ_２Ｈ_５）_２Ｃｌ_２、Ｚｒ（Ｏ−ｉ−Ｃ_３Ｈ_７）_２Ｃｌ_２、Ｚｒ（Ｏ−ｎ−Ｃ_３Ｈ_７）_２Ｂｒ_２、Ｚｒ（Ｏ−ｎ−Ｃ_４Ｈ_９）_２Ｃｌ_２、Ｚｒ（Ｏ−ｉ−Ｃ_４Ｈ_９）_２Ｂｒ_２、Ｚｒ（Ｏ−ｓ−Ｃ_４Ｈ_９）_２Ｉ_２、Ｚｒ（ＯＣ_５Ｈ_１１）_２Ｃｌ_２、Ｚｒ（Ｏ−ｃｙｃｌｏＣ_６Ｈ_１１）_２Ｆ_２、Ｚｒ［Ｎ（Ｃ_２Ｈ_５）］_４、Ｚｒ［Ｎ（ｎ−Ｃ_３Ｈ_７）］_４、Ｚｒ［Ｎ（ｉ−Ｃ_３Ｈ_７）］_４、Ｚｒ［Ｎ（ｎ−Ｃ_４Ｈ_９）］_４、Ｚｒ［Ｎ（ｉ−Ｃ_４Ｈ_９）］_４、Ｚｒ［Ｎ（ｓ−Ｃ_４Ｈ_９）］_４、Ｚｒ［Ｎ（ｔ−Ｃ_４Ｈ_９）］_４、Ｚｒ［Ｎ（ｃｙｃｌｏＣ_５Ｈ_９）］_４、Ｚｒ［Ｎ（Ｃ_５Ｈ_１１）］_４、Ｚｒ［Ｎ（Ｃ_６Ｈ_５）］_４、Ｚｒ［Ｎ（ｃｙｃｌｏＣ_６Ｈ_１１）］_４、Ｚｒ［Ｎ（Ｃ_６Ｈ_１３）］_４、Ｚｒ［Ｎ（Ｃ_２Ｈ_５）_２］_２Ｃｌ_２、Ｚｒ［Ｎ（ｎ−Ｃ_３Ｈ_７）_２］_２Ｃｌ_２、Ｚｒ［Ｎ（ｉ−Ｃ_３Ｈ_７）_２］_２Ｂｒ_２、Ｚｒ［Ｎ（ｓ−Ｃ_４Ｈ_９）_２］_２Ｃｌ_２、Ｚｒ［Ｎ（ｎ−Ｃ_４Ｈ_９）_２］_２Ｂｒ_２、Ｚｒ［Ｎ（ｔ−Ｃ_４Ｈ_９）_２］_２Ｉ_２、Ｚｒ［Ｎ（Ｃ_５Ｈ_１１）_２］_２Ｆ_２、Ｚｒ［Ｎ（Ｃ_５Ｈ_１１）_２］_２Ｃｌ_２、Ｚｒ（アセチルアセトナト）_２Ｃｌ_２、Ｚｒ（メチルブタンジオナト）_２Ｃｌ_２、Ｚｒ（ブタンジオナト）_２Ｃｌ_２、Ｚｒ（ベンゾイルアセトナト）_２Ｂｒ_２、Ｚｒ（ベンゾイルトリフルオロアセトナト）_２Ｆ_２、Ｚｒ（ジベンゾイルメタナト）_２Ｉ_２、Ｚｒ（フロイルアセトナト）_２Ｂｒ_２、Ｚｒ（トリフルオロアセチルアセトナト）_２Ｂｒ_２、Ｚｒ（２，４−ヘキサンジオナト）_２Ｃｌ_２、Ｈｆ（ＯＣ_２Ｈ_５）_４、Ｈｆ（Ｏ−ｎ−Ｃ_３Ｈ_７）_４、Ｈｆ（Ｏ−ｉ−Ｃ_３Ｈ_７）_４、Ｈｆ（Ｏ−ｎ−Ｃ_４Ｈ_９）_４、Ｈｆ（Ｏ−ｉ−Ｃ_４Ｈ_９）_４、Ｈｆ（Ｏ−ｓ−Ｃ_４Ｈ_９）_４、Ｈｆ（Ｏ−ｔ−Ｃ_４Ｈ_９）_４、Ｈｆ（Ｏ−ｃｙｃｌｏＣ_５Ｈ_９）_４、Ｈｆ（ＯＣ_５Ｈ_１１）_４、Ｈｆ（ＯＣ_６Ｈ_５）_４、Ｈｆ（Ｏ−ｃｙｃｌｏＣ_６Ｈ_１１）_４、Ｈｆ（ＯＣ_６Ｈ_１３）_４、Ｈｆ（ＯＣ_２Ｈ_５）_２Ｃｌ_２、Ｈｆ（Ｏ−ｉ−Ｃ_３Ｈ_７）_２Ｃｌ_２、Ｈｆ（Ｏ−ｎ−Ｃ_３Ｈ_７）_２Ｂｒ_２、Ｈｆ（Ｏ−ｎ−Ｃ_４Ｈ_９）_２Ｃｌ_２、Ｈｆ（Ｏ−ｉ−Ｃ_４Ｈ_９）_２Ｂｒ_２、Ｈｆ（Ｏ−ｓ−Ｃ_４Ｈ_９）_２Ｉ_２、Ｈｆ（ＯＣ_５Ｈ_１１）_２Ｃｌ_２、Ｈｆ（Ｏ−ｃｙｃｌｏＣ_６Ｈ_１１）_２Ｆ_２、Ｈｆ［Ｎ（Ｃ_２Ｈ_５）］_４、Ｈｆ［Ｎ（ｎ−Ｃ_３Ｈ_７）］_４、Ｈｆ［Ｎ（ｉ−Ｃ_３Ｈ_７）］_４、Ｈｆ［Ｎ（ｎ−Ｃ_４Ｈ_９）］_４、Ｈｆ［Ｎ（ｉ−Ｃ_４Ｈ_９）］_４、Ｈｆ［Ｎ（ｓ−Ｃ_４Ｈ_９）］_４、Ｈｆ［Ｎ（ｔ−Ｃ_４Ｈ_９）］_４、Ｈｆ［Ｎ（ｃｙｃｌｏＣ_５Ｈ_９）］_４、Ｈｆ［Ｎ（Ｃ_５Ｈ_１１）］_４、Ｈｆ［Ｎ（Ｃ_６Ｈ_５）］_４、Ｈｆ［Ｎ（ｃｙｃｌｏＣ_６Ｈ_１１）］_４、Ｈｆ［Ｎ（Ｃ_６Ｈ_１３）］_４、Ｈｆ［Ｎ（Ｃ_２Ｈ_５）_２］_２Ｃｌ_２、Ｈｆ［Ｎ（ｎ−Ｃ_３Ｈ_７）_２］_２Ｃｌ_２、Ｈｆ［Ｎ（ｉ−Ｃ_３Ｈ_７）_２］_２Ｂｒ_２、Ｈｆ［Ｎ（ｓ−Ｃ_４Ｈ_９）_２］_２Ｃｌ_２、Ｈｆ［Ｎ（ｎ−Ｃ_４Ｈ_９）_２］_２Ｂｒ_２、Ｈｆ［Ｎ（ｔ−Ｃ_４Ｈ_９）_２］_２Ｉ_２、Ｈｆ［Ｎ（Ｃ_５Ｈ_１１）_２］_２Ｆ_２、Ｈｆ［Ｎ（Ｃ_５Ｈ_１１）_２］_２Ｃｌ_２、Ｈｆ（アセチルアセトナト）_２Ｃｌ_２、Ｈｆ（メチルブタンジオナト）_２Ｃｌ_２、Ｈｆ（ブタンジオナト）_２Ｃｌ_２、Ｈｆ（ベンゾイルアセトナト）_２Ｂｒ_２、Ｈｆ（ベンゾイルトリフルオロアセトナト）_２Ｆ_２、Ｈｆ（ジベンゾイルメタナト）_２Ｉ_２、Ｈｆ（フロイルアセトナト）_２Ｂｒ_２、Ｈｆ（トリフルオロアセチルアセトナト）_２Ｂｒ_２、Ｈｆ（２，４−ヘキサンジオナト）_２Ｃｌ_２、等が挙げられる。
【００３４】
アルミノキサン類としては、例えば、メチルアルミノキサン、エチルアルミノキサン、イソブチルアルミノキサン、及びこれらアルミノキサン中の未反応アルミニウム化合物を除去・精製した乾燥アルミノキサン等が挙げられる。なお、アルミノキサン類の代りにトリフェニルボラン、トリスペンタフルオロフェニルボラン、トリフェニルメチルトリスペンタフルオロボレート等のホウ素化合物を単独で、あるいはトリアルキルアルミニウムやアルキルアルミニウムハライドのような有機アルミニウム化合物を組み合わせて用いることができる。さらに、ジメチルアルミニウムクロリド、ジエチルアルミニウムクロリド、ジエチルアルミニウムブロミド、ジイソブチルアルミニウムクロリド、ジオクチルアルミニウムクロリド、エチルアルミニウムセスキクロリド等の有機アルミニウム化合物を用いることもできる。
【００３５】
上記成分の使用量は、モノマー使用量１モル当り、金属錯体が１×１０^−５〜０．５モル、好ましくは１×１０^−４〜０．１モルであり、アルミノキサン類、ホウ素化合物又は有機アルミニウム化合物が１×１０^−６〜０．５モル、好ましくは１×１０^−５〜０．１モルである。
【００３６】
共重合反応は、−１００〜１００℃の温度で０．５〜５０時間、好ましくは−８０〜８０℃で１〜３０時間行われる。
【００３７】
前記▲３▼のチタン、ジルコニウム、ハフニウムからなる群から選ばれる金属のシクロアルカジエニル基あるいはその誘導体を２つとハロゲンまたはアルキル基を有する錯体と、アルミノキサン類、ホウ素化合物又は有機アルミニウム化合物からなる触媒において、該錯体は、２つのシクロアルカジエニル基あるいはその誘導体が架橋されていないか若しくは２ヶ所で架橋されているものが選ばれる。
【００３８】
非架橋性メタロセン化合物としては、例えば、一般式（３）で示される化合物が挙げられ、具体的には、（シクロペンタジエニル）（フルオレニル）ジルコニウムジクロリド、（シクロペンタジエニル）（フルオレニル）ジルコニウムジメチル、（シクロペンタジエニル）（フルオレニル）ジルコニウムジエチル、（シクロペンタジエニル）（フルオレニル）チタニウムジクロリド、（シクロペンタジエニル）（フルオレニル）ハフニウムジクロリド等が挙げられる。その他、例えば、（Ｃ_５Ｈ_５）_２Ｚｒ（Ｃ_６Ｈ_５）_２、（Ｃ_５Ｈ_４−ｉ−Ｃ_３Ｈ_７）_２ＺｒＣｌ_２、（Ｃ_５Ｈ_４−ｔ−Ｃ_４Ｈ_９）_２ＺｒＣｌ_２、（Ｃ_５Ｈ_４−ｔ−Ｃ_４Ｈ_９）_２ＺｒＢｒ_２、（Ｃ_５Ｈ_４−ｔ−Ｃ_４Ｈ_９）_２ＺｒＩ_２、（Ｃ_５Ｈ_４−ｔ−Ｃ_４Ｈ_９）_２ＺｒＦ_２、（Ｃ_５Ｈ_４−ｔ−Ｃ_４Ｈ_９）_２Ｚｒ（ＣＨ_３）_２、（Ｃ_５Ｈ_４−ｔ−Ｃ_４Ｈ_９）_２Ｚｒ（Ｃ_６Ｈ_５）_２、［Ｃ_５Ｈ_４−ＣＨ（ＣＨ_３）（Ｃ_６Ｈ_５）］_２ＺｒＣｌ_２、等を挙げることができる。
【００３９】
また、２架橋性メタロセンとしては、例えば、一般式（４）で示され、Ｊ．Ａｍ．Ｃｈｅｍ．Ｓｏｃ．、Ｖｏｌ．１２１、Ｎｏ．３、５６５（１９９９）に記載されている化合物が挙げられ、具体的には、（１，２−Ｍｅ_２Ｓｉ）_２（η^５―Ｃ_５Ｈ_３）_２ＺｒＣｌ_２、（１，２−Ｍｅ_２Ｓｉ）_２（η^５―Ｃ_５Ｈ_３）（η^６―Ｃ_５Ｈ_２−３−ＣＨ_３）ＺｒＣｌ_２、（１，２−Ｍｅ_２Ｓｉ）_２（η^５―Ｃ_５Ｈ_３）｛η^６―Ｃ_５Ｈ_２−３−ＣＨ（ＣＨ_３）_２｝ＺｒＣｌ_２、（１，２−Ｍｅ_２Ｓｉ）_２（η^５―Ｃ_５Ｈ_３）｛η^５―Ｃ_５Ｈ−３，５−（ＣＨ（ＣＨ_３）_２｝_２ＺｒＣｌ_２、（１，２−Ｍｅ_２Ｓｉ）_２（η^５―Ｃ_５Ｈ_２−４−ＣＨ_３）｛η^５―Ｃ_５Ｈ−３，５−（ＣＨ（ＣＨ_３）_２）_２｝ＺｒＣｌ_２、（１，２−Ｍｅ_２Ｓｉ）_２｛η^５―Ｃ_６Ｈ_５−４−ＣＨ（ＣＨ_３）_３｝｛η^５―Ｃ_５Ｈ−３，５−（ＣＨ（ＣＨ_３）_２）_２｝ＺｒＣｌ_２、（１，２−Ｍｅ_２Ｓｉ）_２｛η^５―Ｃ_５Ｈ_２−４−Ｓｉ（ＣＨ_３）_３｝｛η^５―Ｃ_５Ｈ−３，５−（ＣＨ（ＣＨ_３）_２）_２｝ＺｒＣｌ_２、（１，２−（Ｃ_６Ｈ_５）_２Ｓｉ）_２｛η^５―Ｃ_５Ｈ_２−４−Ｓｉ（ＣＨ_３）_３｝｛η^５―Ｃ_５Ｈ−３，５−（ＣＨ（ＣＨ_３）_２）_２｝ＺｒＣｌ_２、（１，２−Ｍｅ_２Ｓｉ）_２｛η^５―Ｃ_５Ｈ_２−４−Ｓｉ（ＣＨ_３）_３｝｛η^５―Ｃ_５Ｈ−３，５−（ＣＨ（ＣＨ_３）_２）_２｝Ｚｒ（ＣＨ_３）_２、（１，２−Ｍｅ_２Ｓｉ）_２（η^５―Ｃ_５Ｈ_３）_２ＨｆＣｌ_２、（１，２−Ｍｅ_２Ｓｉ）_２（η^５―Ｃ_５Ｈ_３）（η^５―Ｃ_５Ｈ_２−３−ＣＨ_３）ＨｆＣｌ_２、（１，２−Ｍｅ_２Ｓｉ）_２（η^５―Ｃ_５Ｈ_３）_２ＴｉＣｌ_２、（１，２−Ｍｅ_２Ｓｉ）_２（η^５―Ｃ_５Ｈ_３）（η^５―Ｃ_５Ｈ_２−３−ＣＨ_３）ＴｉＣｌ_２、等が挙げられる。
【００４０】
一般式（３）
【化３】

【００４１】
一般式（４）
【化４】

【００４２】
一般式（３）、（４）中、Ｒ^１〜Ｒ^３は、それぞれＨ若しくは炭素数１〜８の脂肪族炭化水素基を示す。Ｘは、ハロゲン、炭素数１〜８の脂肪族炭化水素基、炭素数８〜１０の芳香族炭化水素基を示す。Ｍは、Ｔｉ、Ｚｒ、Ｈｆのいずれかの金属である。Ｒ^１〜Ｒ^３は、同時に同じであっても、異なっていても良い。
【００４３】
また、アルミノキサン類、並びにホウ素化合物単独あるいは有機アルミニウム化合物と組み合わせたものが使用できるが、これらは、▲２▼で記載したものを用いることができる。
上記成分の使用量は、モノマー使用量１モル当り、メタロセン化合物が５．０×１０^−７〜５．０×１０^−３モル、好ましくは１．０×１０^−６〜１．０×１０^−４モルであり、アルミノキサン類、ホウ素化合物又は有機アルミニウム化合物が１．０×１０^−５〜５．０モル、好ましくは１．０×１０^−３〜０．１モルである。
【００４４】
共重合反応は、−１００〜９０℃の温度で０．１〜１００時間、好ましくは−５０〜５０℃で１〜５０時間行われる。
【００４５】
前記▲４▼の触媒において、チタン、ジルコニウム、ハフニウムからなる群から選ばれる金属のシクロアルカジエニル基あるいはその誘導体を１つとアルコキシ基あるいはアルキルアミノ基の少なくとも１つ有する化合物としては、一般式（５）〜（７）に示すような化合物が挙げられる。
【００４６】
例えば、一般式（５）で表される化合物としては、ＣｐＴｉ（ＯＭｅ）_３、ＣｐＴｉ（ＯＥｔ）_３、ＣｐＴｉ（Ｏ・ｉＰｒ）_３、ＣｐＴｉ（Ｏ・ｔＢｕ）_３、ＣｐＴｉ（ＯＣ_６Ｈ_５）_３、ＣｐＴｉ（２−Ｍｅ−ＯＣ_６Ｈ_４）_３、ＣｐＴｉ（２−Ｅｔ−ＯＣ_６Ｈ_４）_３、ＣｐＴｉ（２−Ｐｒ−ＯＣ_６Ｈ_４）_３、ＣｐＴｉ（２−ｔＢｕ−ＯＣ_６Ｈ_４）_３、ＣｐＴｉ（２，６−Ｍｅ_２−ＯＣ_６Ｈ_３）_３、ＣｐＴｉ（２，６−Ｅｔ_２−ＯＣ_６Ｈ_３）_３、ＣｐＴｉ（２，６−ｉＰｒ_２−ＯＣ_６Ｈ_３）_３、ＣｐＴｉ（２，６−ｔＢｕ_２−ＯＣ_６Ｈ_３）_３、ＣｐＴｉ（２−Ｍｅ−６−ｔＢｕ−ＯＣ_６Ｈ_３）_３、ＣｐＴｉ（３−Ｍｅ−６−ｔＢｕ−ＯＣ_６Ｈ_３）_３、ＣｐＴｉ（ＯＭｅ）Ｃｌ_２、ＣｐＴｉ（ＯＭｅ）_２Ｃｌ、ＣｐＴｉ（ＯＣ_６Ｈ_５）Ｃｌ_２、ＣｐＴｉ（ＯＣ_６Ｈ_５）_２Ｃｌ、ＣｐＴｉ（ＯＭｅ）（ＯＣ_６Ｈ_５）Ｃｌ、等が挙げられ、一般式（６）で表される化合物としては、（Ｍｅ_２Ｃ）Ｃｐ（Ｃ_６Ｈ_４）ＯＴｉＣｌ_２、（（Ｃ_６Ｈ_５）_２Ｃ）Ｃｐ（Ｃ_６Ｈ_４）ＯＴｉＣｌ_２、（Ｍｅ_２Ｃ）Ｃｐ（３−Ｍｅ−Ｃ_６Ｈ_３）ＯＴｉＣｌ_２、（Ｍｅ_２Ｃ）Ｃｐ（５−Ｍｅ−Ｃ_６Ｈ_３）ＯＴｉＣｌ_２、（Ｍｅ_２Ｃ）Ｃｐ（３−ｔＢｕ−Ｃ_６Ｈ_３）ＯＴｉＣｌ_２、（Ｍｅ_２Ｃ）Ｃｐ（３，５−Ｍｅ_２−Ｃ_６Ｈ_２）ＯＴｉＣｌ_２、（Ｍｅ_２Ｃ）Ｃｐ（３，５−ｔＢｕ_２−Ｃ_６Ｈ_２）ＯＴｉＣｌ_２、（Ｍｅ_２Ｃ）Ｃｐ（３−Ｍｅ−５−ｔＢｕ−Ｃ_６Ｈ_２）ＯＴｉＣｌ_２、（Ｍｅ_２Ｃ）Ｃｐ（３−ｔＢｕ−５−Ｍｅ−Ｃ_６Ｈ_２）ＯＴｉＣｌ_２、等が挙げられる。
【００４７】
また、一般式（７）で表される化合物としては、ＭｅＮＳｉＭｅ_２（Ｆｌｕ）ＴｉＣｌ_２、ｔＢｕＮＳｉＭｅ_２（Ｆｌｕ）ＴｉＣｌ_２、Ｃ_６Ｈ_５ＮＳｉＭｅ_２（Ｆｌｕ）ＴｉＣｌ_２、ｔＢｕＮＳｉ（Ｃ_６Ｈ_５）_２（Ｆｌｕ）ＴｉＣｌ_２、ｔＢｕＮＳｉＭｅ_２（Ｆｌｕ）ＴｉＭｅ_２、等が挙げられる。
【００４８】
一般式（５）〜（７）
【化５】

【００４９】
一般式（５）〜（７）中、Ｘ、Ｙ、Ｚは、Ｆ、Ｃｌ、Ｂｒ、若しくはＩから選択されるハロゲン、炭素数１〜８の脂肪族炭化水素基、そのアルコキシ基、置換基を有しても良い炭素数６〜１４の芳香族炭化水素基、そのアルコキシ基；Ｒ^１〜Ｒ^３は、炭素数１〜８の脂肪族炭化水素基、置換基を有しても良い炭素数６〜１４の芳香族炭化水素基を示す。Ｒ^１〜Ｒ^３及びＸ、Ｙ、Ｚは、それぞれ同時に同じであっても、異なっていても良い。
【００５０】
また、アルミノキサン類、並びにホウ素化合物単独あるいは有機アルミニウム化合物と組み合わせたものが使用でき、これらは、▲２▼で記載したものを用いることができる。
【００５１】
チタン、ジルコニウム、ハフニウムからなる群から選ばれる金属のシクロアルカジエニル基あるいはその誘導体を１つとアルコキシ基あるいはアルキルアミノ基を少なくとも１つ有する化合物の使用量は、モノマー使用量１モル当り、１×１０^−８〜０．１モル、好ましくは１×１０^−７〜５×１０^−２モルであり、アルミノキサン類、ホウ素化合物又は有機アルミニウム化合物が１×１０^−８〜０．１モル、好ましくは１×１０^−７〜０．０５モルである。
【００５２】
共重合反応は、−１００〜９０℃の温度で０．５〜１００時間、好ましくは−５０〜５０℃で１〜５０時間行われる。
【００５３】
前記▲５▼のニッケル、パラジウム等のジイミン錯体と、アルミノキサン類からなる触媒において、ニッケル、パラジウム等のジイミン錯体としては、例えば、一般式（８）〜（１１）で表される化合物などが挙げられる。
アルミノキサン類としては、例えば、メチルアルミノキサン、エチルアルミノキサン、ブチルアルミノキサン等が挙げられる。
【００５４】
一般式（８）〜（１１）
【化６】

【００５５】
一般式（８）〜（１１）中、ＸはＣｌまたはメチル（Ｍｅ）基；Ｒは、メチル（Ｍｅ）基またはイソプロピル（ｉＰｒ）基を示し、同時に同じであっても異なっていても良い。
【００５６】
ニッケル、パラジウム等のジイミン錯体の使用量は、モノマー使用量１モル当り、１×１０^−６〜０．１モル、好ましくは５×１０^−６〜５×１０^−２モルであり、アルミノキサン類が１×１０^−６〜０．１モル、好ましくは５×１０^−４〜０．０５モルである。
【００５７】
共重合反応は、−１００〜９０℃の温度で０．５〜１００時間、好ましくは−５０〜５０℃で１〜５０時間行われる。
【００５８】
本発明においてポリプロピレンは、上記の触媒を用いて製造することができるが、好ましくは▲１▼〜▲３▼、特に好ましくは▲１▼の触媒を用いて製造することができる。▲１▼〜▲５▼の触媒を用いる場合、分子量調節剤として、水素、ジエチル亜鉛、Ｓｉ−Ｈ結合含有化合物を添加することができる。また、▲１▼〜▲５▼の触媒は、シリカ、アルミナ、ジルコニア、チタニア等の担体に担持して用いることができる。
【００５９】
本発明に係るポリプロピレンは、^１３Ｃ−ＮＭＲで測定したラセミダイアド分率［ｒ］が０．１２〜０．８８（ただし、０．５０を除く）の範囲であれば、１０モル％未満のエチレン、α−オレフィンまたはジオレフィンとの共重合体であっても良い。α−オレフィンは、炭素数４〜８のものが好ましく、ジオレフィンは、炭素数４〜１４のものが好ましい。具体的には、α−オレフィンは、１−ブテン、１−ヘキセン、４−メチル−１−ペンテン等が挙げられ、ジオレフィンは、ブタジエン、１，５−ヘキサジエン、１，７−オクタジエン、１，９−デカジエン等が挙げられる。ポリプロピレンとの十分な親和性を得るにはプロピレンの単独重合体が好ましい。
また、このようにして得られる本発明のポリプロピレンは、例えばペンタン、へキサン、へプタン等の飽和脂肪族炭化水素、シクロヘキサン、シクロペンタン等の飽和脂環式炭化水素、ベンゼン、トルエン、キシレン等の芳香族炭化水素に可溶であり、好ましくは常温におけるポリプロピレンのトルエンに対する溶解度が５ｇ以上、より好ましくは１０ｇ以上１００ｇ以下、特に好ましくは１５ｇ以上５０ｇ以下である。
【００６０】
２．ジカルボン酸変性ポリプロピレン
本発明のジカルボン酸変性ポリプロピレンは、^１３Ｃ−ＮＭＲで測定したラセミダイアド分率［ｒ］が０．１２〜０．８８（ただし、０．５０を除く）の範囲にあり、ＩＲ測定の吸収ピークが上記のとおりであるポリプロピレンを有機溶媒に溶解するか混練機中で、ラジカル反応開始剤の存在下、不飽和ジカルボン酸の１種または２種以上と反応させることにより得ることができる。
【００６１】
有機溶媒としては、プロパン、ブタン、ペンタン、ヘキサン、ヘプタン、ノナン、デカン等の飽和脂肪族炭化水素、シクロプロパン、シクロヘキサン等の飽和脂環式炭化水素、ベンゼン、トルエン、キシレン等の芳香族炭化水素等が使用される。
【００６２】
また、ラジカル反応開始剤としては、アゾビスイソブチロニトリル、２，２−アゾビス（２，４−ジメチルバレロニトリル）などのアゾ系、過酸化ベンゾイル、ｔ−ブチルパーオキシ−２−エチルヘキサノエート、２，５−ジメチル−２，５−ジ−ｔ−ブチルパーオキシヘキサンなどの過酸化物を使用することができる。
【００６３】
本発明で用いられる不飽和ジカルボン酸は、炭素数が４〜１２の不飽和脂肪族ジカルボン酸、不飽和脂環式ジカルボン酸のいずれかである。不飽和ジカルボン酸の不飽和結合は、２重結合でも３重結合でも良く、また不飽和結合は単数に限らず複数でも良い。
さらに、不飽和ジカルボン酸は、カルボキシル基以外にエステル基、エーテル基、ケトン基、水酸基、あるいはアミノ基などの置換基を有していても良い。
【００６４】
不飽和脂肪族ジカルボン酸としては、例えば、エチレンジカルボン酸、プロピレンジカルボン酸などのアルケンジカルボン酸、アルカジエンジカルボン酸、アルカトリエンジカルボン酸、アルキンジカルボン酸等が挙げられる。
【００６５】
具体的には、エチレンジカルボン酸としては、フマル酸、プロピレンジカルボン酸としては、イタコン酸［ＣＨ_２＝Ｃ（ＣＯＯＨ）−ＣＨ_２−ＣＯＯＨ］、メサコン酸［ｔｒａｎｓ−ＣＨ_３−Ｃ（ＣＯＯＨ）＝ＣＨＣＯＯＨ］、グルタコン酸［（ＣＯＯＨ）−ＣＨ_２−ＣＨ＝ＣＨＣＯＯＨ：シス体及びトランス体がある］が挙げられる。
【００６６】
アルケンジカルボン酸としては、上記の他に、ビニルコハク酸［ＣＨ_２＝ＣＨ−ＣＨ（ＣＯＯＨ）−ＣＨ_２−ＣＯＯＨ］のようなブテンジカルボン酸類、アリルコハク酸［ＣＨ_２＝ＣＨ−ＣＨ_２ＣＨ（ＣＯＯＨ）−ＣＨ_２ＣＯＯＨ］のようなペンテンジカルボン酸類、ヘキセンジカルボン酸類、ヘプテンジカルボン酸類、オクテンジカルボン酸類、ノネンジカルボン酸類、デセンジカルボン酸類およびこれらの誘導体が使用できる。
【００６７】
さらに、アルカジエンジカルボン酸としては、プロパンジエンジカルボン酸（ＨＯＯＣ−ＣＨ＝Ｃ＝ＣＨ−ＣＯＯＨ）、ビニルフマル酸、ビニルマレイン酸のようなブタジエンジカルボン酸類、ペンタジエンジカルボン酸類、ブテニルマレイン酸等のヘキサジエンジカルボン酸類、ヘプタジエンジカルボン酸類、オクタジエンジカルボン酸類、ノナジエンジカルボン酸類、デカジエンジカルボン酸類およびこれらの誘導体などが挙げられる。
【００６８】
一方、不飽和脂環式ジカルボン酸としては、シクロアルケンジカルボン酸、シクロアルカジエンジカルボン酸、シクロアルカトリエンジカルボン酸、シクロアルキンジカルボン酸等が使用できる。
【００６９】
例えばシクロアルケンジカルボン酸としては、シクロペンテンジカルボン酸類、シクロヘキセンジカルボン酸類、シクロヘプテンジカルボン酸類、シクロオクテンジカルボン酸類、シクロノネンジカルボン酸類、シクロデセンジカルボン酸類およびこれらの誘導体がある。
【００７０】
シクロヘキセンジカルボン酸類の具体例としては、シクロヘキセン−１，２−ジカルボン酸、シクロヘキセン−１，３−ジカルボン酸、シクロヘキセン−１，４−ジカルボン酸、シクロへキセン−１，５−ジカルボン酸、シクロヘキセン−１，６一ジカルボン酸、シクロヘキセン−２，５−ジカルボン酸、シクロヘキセン−３，４−ジカルボン酸、シクロへキセン−３，５−ジカルボン酸、シクロヘキセン−４，５−ジカルボン酸等が挙げられる。
【００７１】
また、シクロアルカジエンジカルボン酸の具体例としては、ジヒドロフタル酸、ジヒドロイソフタル酸、ジヒドロテレフタル酸等のシクロヘキサジエンジカルボン酸類およびこれらの誘導体以外に、シクロペンタジエンジカルボン酸類、シクロヘプタジエンジカルボン酸類、シクロオクタジエンジカルボン酸類、シクロノナジエンジカルボン酸類、シクロデカジエンジカルボン酸類およびこれらの誘導体などが挙げられる。
さらに、エンドメチレンテトラヒドロフタル酸、メチルエンドメチレンテトラヒドロフタル酸等の複脂環式アルケンジカルボン酸を用いてもよい。
【００７２】
本発明において特に好ましいジカルボン酸は、フマル酸、イタコン酸、メサコン酸、グルタコン酸である。
以上、ジカルボン酸について詳述したが、本発明では、これに限らず３個以上のカルボキシル基を有したトリカルボン酸、テトラカルボン酸のような化合物が排除されるものではない。
【００７３】
本発明に係る製造方法において、ジカルボン酸をポリプロピレンへ導入するには、例えば、ポリプロピレンをヘプタンなどの有機溶媒に溶解し、窒素雰囲気下において、ｔ−ブチルパーオキシ−２−エチルヘキサノエートなどのラジカル反応開始剤の存在下、フマル酸などの不飽和ジカルボン酸、または２種以上の不飽和ジカルボン酸と反応させる。反応温度としては、５０〜２００℃が好ましく、より好ましくは７０〜１８０℃である。また、反応時間は３〜２００分で、５〜１００分が特に好ましい。
【００７４】
上記の方法により、^１３Ｃ−ＮＭＲで測定したラセミダイアド分率［ｒ］が０．１２〜０．８８（ただし、０．５０を除く）の範囲にあるポリプロピレンの１分子あたり、ジカルボン酸を平均０．５個以上、好ましくは平均０．５〜１００個、特に平均０．５〜３０個有するポリマー、即ちジカルボン酸変性ポリプロピレンを製造することができる。
【００７５】
本発明に係るジカルボン酸変性ポリプロピレンの重量平均分子量（Ｍｗ）は、５，０００〜４００，０００であり、好ましくは１０，０００〜２５０，０００である。分子量分布（Ｍｗ／Ｍｎ）は１．０１〜３．００、好ましくは１．１〜２．５である。
【００７６】
この変性ポリプロピレンは、ラセミダイアド分率［ｒ］が０．１２〜０．８８（ただし、０．５０を除く）の可溶性ポリプロピレンがジカルボン酸で変性されたものなので、トルエン等の有機溶剤への溶解性が高く、ポリプロピレンと良好な親和性を有すると同時に極性を有する樹脂とも高い親和性を有し、変性剤としてジカルボン酸無水物ではなく、不飽和ジカルボン酸を用いることにより、粘度上昇等の溶液性状の悪化を引き起こさないという特徴を有している。
【００７７】
したがって、本発明の変性ポリプロピレンは、プライマー、塗料、粘着剤、接着剤、インキ、反応性ポリマー、表面改質剤、コーティング剤或いはポリプロピレンと他のポリマーとの相溶化剤などとして使用することができる。特に好ましい用途は、プライマー、塗料、粘着剤、接着剤、インキ、反応性ポリマー、或いは相溶化剤である。
【００７８】
【実施例】
以下に実施例を示して、本発明を更に具体的に説明するが、本発明は、これらの実施例により何ら限定されるものではない。
なお、本実施例、比較例中のポリマーの分析は、次に示す評価方法に基づいて行った。
【００７９】
（１）分子量の測定
分子量の測定は、Ｗａｔｅｒｓ社製ＧＰＣ（ゲルパーミエーションクロマトグラフィー）モデル１５０を用いた。その測定条件は、溶媒としてｏ−ジクロルベンゼンを用い、測定温度を１３５℃、溶媒流速を１．０ｍｌ／分とした。カラムは、東ソー社製の単分散ポリスチレン標準試料を用い、ポリスチレンの検量線を求め、これによりユニバーサル法によってポリプロピレンの検量線を作成し、ポリプロピレンの分子量を測定した。
【００８０】
（２）立体規則性の測定
^１３Ｃ−ＮＭＲは、ＰＦＴパルスフーリエ変換装置付きＶａｒｉａｎ社製ＸＬ−２００型を用い、５０ＭＨｚ、１２０℃、パルス幅８．２μｓπ／３、パルス間隔４秒、積算回数５０００の条件で、立体規則性を測定した。試料は、トリクロルベンゼンとベンゼン（２：１）の混合溶液に溶解して調整した。
【００８１】
（３）ジカルボン酸のポリプロピレンへの導入量の測定（ジカルボン酸／ポリプロピレン１分子）
ジカルボン酸の導入量は、赤外線吸収スペクトル（ＩＲ）測定により、吸収ピークを解析して決定した。ＩＲ測定には、日本分光社製のＦＴ／ＩＲ−４７０を用いて、フィルム状にしたポリマーを使用した。
【００８２】
（４）溶解性
溶媒へのポリマーの溶解性は、トルエンへの溶解度を測定することにより評価した。その測定方法と評価基準は、２５℃のトルエン１００ｇに対し、ポリプロピレンの溶解度（ｇ）を測定し、ポリプロピレンの溶解度≧１５ｇ：○、１５ｇ＞溶解度≧５ｇ：△、５ｇ＞溶解度：×とした。ジカルボン酸変性ポリプロピレンも同様に溶解度（ｇ）を測定し、ジカルボン酸変性ポリプロピレンの溶解度≧１５ｇ：○、１５ｇ＞溶解度≧５ｇ：△、５ｇ＞溶解度：×とした。
【００８３】
（５）粘度
粘度は、ポリマーの１５％トルエン溶液を試料として、Ｂ型粘度計を用いて測定した。−１０℃で２週間保存した溶液は、２５℃に温度を上げてから粘度を測定した。
【００８４】
（６）親和性
ポリプロピレンに対する親和性は、得られたポリマーのトルエン溶液を室温でＰＰ板に塗布し、１００℃で１時間乾燥した後、ＪＩＳ Ｋ−５４００に従って、基盤目テープ法テストを行った。○：密着率＝１００％、△：密着率≧９０％、×：密着率＜９０％とした。
【００８５】
（実施例１）
（１）プロピレンの重合
窒素ガスで十分置換した２Ｌの攪拌機付きオートクレーブにトルエンを１５０ｍＬ入れ、−６０℃に保った。同温度で２ｍｏｌ／Ｌのジエチルアルミニウムクロライドのトルエン溶液３０ｍＬを加えた。次に、フタル酸ジイソブチルを１２ｍｍｏｌ添加した。その後、攪拌しながらプロピレンを８．３ｍｏｌ導入した。最後に０．１ｍｏｌ／ＬのＶ（ｍｂｄ）_３のトルエン溶液を７ｍＬ加え、重合を開始した。重合は８時間行った（表１参照）。
−６０℃に冷却した５Ｌのメタノール中に反応溶液を入れ、ポリマーを析出させることにより重合を停止した。得られたポリマーはメタノールで５回洗浄し、室温で乾燥した。ポリマーの収量は４６ｇであった。ポリマーのＧＰＣ曲線は単峰性であり、重量平均分子量Ｍｗは１３０，０００、Ｍｗ／Ｍｎの値は１．４であった。ポリマーの解析結果を表２に示す。
ＩＲで観測したところ、９６２ｃｍ^−１と９７７ｃｍ^−１に吸収ピークが存在したが、９７３ｃｍ^−１の位置に吸収ピークが存在せず、７７０ｃｍ^−１、８４２ｃｍ^−１、８７０ｃｍ^−１、９９８ｃｍ^−１、及び１０２２ｃｍ^−１の位置にも吸収ピークが観測されなかったことから、実施例１で得られたポリプロピレンは、可溶性シンジオタクチックポリプロピレンであることが確認できた。また、常温におけるポリプロピレンのトルエンに対する溶解度は、１５ｇ以上であった。
【００８６】
【表１】

【００８７】
【表２】

【００８８】
（２）ポリプロピレンヘのジカルボン酸の導入
東洋精機製作所（株）製のラボプラストミルｍｏｄｅｌ５０Ｃ１５０を用い、上記（１）で得られたポリプロピレンをフマル酸で変性した。混練温度を１７０℃に設定し、ミキサー内を十分窒素置換した後、窒素気流下で上記ポリプロピレン３５ｇとフマル酸６ｇを導入し、１５０ｒｐｍで３分間混練した。その後、窒素気流下でラジカル反応開始剤として、２，５−ジメチル−２，５−ジ−ｔ−ブチルパーオキシヘキサンを０．６ｇ添加し、１５０ｒｐｍで３分間混練した（表３参照）。
この２，５−ジメチル−２，５−ジ−ｔ−ブチルパーオキシヘキサンの添加と混練の操作を計三回繰り返した後、ポリマーを回収した。回収したポリマー１０ｇを９０ｍＬのトルエンに溶解し、不溶な未反応のフマル酸を濾別した。濾液を４Ｌのアセトンに注ぎ、ポリマーを析出させた。析出したポリマーは２Ｌのアセトンで５回洗浄し、室温で減圧乾燥した。
ポリマーのＩＲ測定を行ったところ、１７２０ｃｍ^−１にジカルボン酸のカルボニル基に基づく吸収が観測された。
また、１Ｈ−ＮＭＲを測定したところ、３ｐｐｍ付近にコハク酸のメチレンに由来するピークが観測された。これらＩＲとＮＭＲの結果より、フマル酸がポリプロピレン鎖に導入されていることが確認された。
ＩＲで観測された１７２０ｃｍ^−１の吸収とＰＰに起因する１４６０ｃｍ^−１の吸収の強度比から、ポリプロピレンへのジカルボン酸の導入量を求めることができる。この値と分子量より、ポリプロピレン一分子あたり３．７個のフマル酸が導入されていることが明らかとなった（表４参照）。
【００８９】
【表３】

【００９０】
【表４】

【００９１】
（３）ジカルボン酸変性ポリプロピレンの評価
（２）で得られたフマル酸変性ポリプロピレンについて、トルエンヘの溶解度と、１５ｗｔ％トルエン溶液の粘度を測定した。また、ポリプロピレンに対する親和性を測定した。結果を表５に示す。本ポリマーはトルエンによく溶解し、低粘度であり、保存による粘度の上昇も起こらないことが分かる。
【００９２】
【表５】

【００９３】
（実施例２〜４）
（１）プロピレンの重合
実施例１と同様な方法で、表１に示した条件でプロピレンの重合を行い、表２のポリマーを得た。
（２）ポリプロピレンヘのフマル酸の導入
実施例１と同様な方法で、表３に示した条件で、ポリプロピレンの変性を行い、表４に示すフマル酸変性ポリプロピレンを得た。この変性ポリプロピレンを同様にして評価し、結果を表５に示した。
【００９４】
（実施例５）
（１）プロピレンの重合
実施例１と同様な方法で、表１に示した条件でプロピレンの重合を行い、表２のポリマーを得た。
（２）ポリプロピレンヘのジカルボン酸の導入
窒素ガスで系内を置換した攪拌機付きの１００ｍＬのオートクレーブを用い、あらかじめ窒素でバブリングした２０ｇのデカンに上記のポリマーを５ｇ溶解し、これにイタコン酸を３ｇ加えた。
反応系を１１０℃に昇温し、２０分攪拌した。０．２ｇの２，５−ジメチル−２，５−ジ−ｔ−ブチルパーオキシヘキサンを添加し、さらに２０分攪拌した。この２，５−ジメチル−２，５−ジ−ｔ−ブチルパーオキシヘキサンの添加と、その後の２０分の攪拌を計１０回繰り返した。
この後、室温のデカン５０ｇを添加し、さらにオートクレーブを急冷することにより、反応を停止した。未反応のイタコン酸を濾別した後、濾液を４Ｌのアセトンに注ぎ、ポリマーを析出させた。析出したポリマーは２Ｌのアセトンで５回洗浄し、室温で減圧乾燥した。
この操作により、表４に記載のポリマーを得た。このイタコン酸変性ポリプロピレンを前記と同様にして評価し、結果を表５に示した。
【００９５】
（実施例６〜１２）
（１）プロピレンの重合
実施例１と同様な方法で、表１に示した条件でプロピレンの重合を行い、表２のポリマーを得た。
（２）ポリプロピレンへのジカルボン酸の導入
実施例８、１１以外は、実施例５と同様な方法で、表３に示した条件で、溶媒を用いてポリプロピレンの変性を行い、表４に示すジカルボン酸変性ポリプロピレンを得た。実施例８、１１は、実施例１と同様な方法により、表３に示した条件で、無溶媒（混練）でポリプロピレンの変性を行った。このジカルボン酸変性ポリプロピレンを同様にして評価し、結果を表５に示した。
【００９６】
（比較例１、２）
（１）プロピレンの重合
実施例１と同様にプロピレンの重合を行った。
（２）ポリプロピレンへのジカルボン酸無水物の導入
比較例１は、得られたポリマーを実施例５と同様な方法で、表３に示した条件において、無水マレイン酸を用いてポリプロピレンの変性を行った（得られた変性ポリプロピレンの物性は表４参照）。比較例２は、比較例１と同様にして製造した変性ポリプロピレンをＴＨＦ／水混合系で５時間リフラックスして、無水マレイン酸を開環した。この変性ポリプロピレンの評価結果を表５に示した。
【００９７】
（比較例３、４）
（１）プロピレンの重合
触媒を変えた以外は実施例１と同様な方法により、表１に示した条件でプロピレンの重合を行い、表２に示すポリマーを得た。
（２）ポリプロピレンへのジカルボン酸の導入
得られたポリマーを実施例５と同様な方法により、表３に示した条件で、ポリプロピレンの変性を行い、表４に示すフマル酸変性ポリプロピレンを得た。この変性ポリプロピレンの評価結果を表５に示した。
【００９８】
表４から明らかなように、実施例１〜１２で得られたジカルボン酸変性ポリプロピレンは、ラセミダイアド分率［ｒ］の値が０．１２〜０．８８の範囲にあるポリプロピレンをベースとして用いたことにより、重量平均分子量（Ｍｗ）が８，０００〜７０，０００で、ポリプロピレン１分子あたりの変性率（ジカルボン酸の導入）が０．５〜１０個／鎖の変性ポリプロピレンであることが分かる。また、表５から明らかなように、実施例１〜１２で得られたジカルボン酸変性ポリプロピレンは、溶媒への溶解性が良好であり、長期間保存しても粘度の上昇がなく、ポリプロピレンとの親和性が高いものである。
【００９９】
これに対して比較例１は、ベースポリマーとして実施例１に記載された可溶性ポリプロピレンを用いても、無水マレイン酸で変性したので、保存時に粘度の著しい上昇が観測された。また、比較例１で得られた無水マレイン酸変性ポリマーのジカルボン酸無水物部分を水で開環させると、比較例２に示したようにポリマーのトルエンに対する溶解度が減少し、粘度は著しく上昇した。さらに、比較例３、４のようにベースポリマーとして結晶性ポリプロピレンを用いると、変性反応が起こりにくく、しかもトルエンヘの溶解性が低くなった。
【０１００】
【発明の効果】
本発明の変性ポリプロピレンは、ポリプロピレンにジカルボン酸を導入したポリマーであり、有機溶媒への溶解性が高く、保存時の粘度上昇がほとんどない非常に良好な溶液性状を有し、しかもポリプロピレンとの親和性が高い。したがって、塗装や接着、印刷が容易になるから、プライマー、塗料、粘着剤、接着剤、インキ、反応性ポリマー、或いは相溶化剤等として極めて有用である。[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a dicarboxylic acid-modified polypropylene.And its manufacturing methodMore specifically, it has a high affinity for polypropylene and polar polymers, and does not deteriorate the solution properties at a low temperature and does not cause a sharp increase in viscosity during storage. Primer, paint, adhesive, adhesive, ink, reactive polymer or Dicarboxylic acid-modified polypropylene useful as a compatibilizerAnd its manufacturing methodAbout.
[0002]
[Prior art]
Polyolefins such as polypropylene and polyethylene have high crystallinity and nonpolarity, and therefore have little affinity with other substrates, for example, polar resins such as acrylic resins and vinyl acetate resins. Therefore, there is a problem that painting, adhesion, and printing are difficult.
[0003]
In order to solve this problem, many studies have been made on chlorination of a polymer and modification with a dicarboxylic acid anhydride. For example, a polypropylene resin is graft copolymerized with a dicarboxylic acid anhydride such as maleic anhydride and then chlorinated. Has been proposed (see, for example, Patent Document 1).
[0004]
However, the chlorinated polypropylene modified with dicarboxylic anhydride has a low affinity for polyolefin when the chlorine content is high, and as a result, the ability to adhere to polyolefin deteriorates. On the other hand, when the chlorine content is low, when dissolved in a solvent, a solid precipitates at a low temperature and the fluidity is lowered, resulting in deterioration of the solution properties.
Therefore, even in the case of a polymer into which these dicarboxylic acid anhydrides are introduced, there are cases where the above-mentioned problems derived from the chlorinated polymer of the main chain cannot be solved and are difficult to use.
[0005]
Then, in order to improve the solubility to a solvent, using the thing copolymerized with another alpha olefin as a base polymer is examined. However, even if a polymer copolymerized with another α-olefin is used, sufficient affinity with polypropylene cannot be obtained.
[0006]
It has also been proposed to use isotactic polypropylene (see Patent Document 2). However, isotactic polypropylene having a high stereoregularity as proposed has a problem that even if the molecular weight is lowered, the solubility in a solvent is low and it is difficult to use.
[0007]
For this reason, in addition to performance with high affinity with polyolefins and polar polymers and compounds, development of modified polypropylene that has high solubility in solvents and good solution stability when dissolved in solvents. Is needed.
[0008]
[Patent Document 1]
JP-A-2002-20672 (Claims)
[Patent Document 2]
Japanese Patent Application Laid-Open No. 11-100412 (summary)
[0009]
[Problems to be solved by the invention]
  In view of the circumstances as described above, the object of the present invention is to modify polypropylene having a racemic dyad fraction [r] in a specific range and soluble in an organic solvent with a dicarboxylic acid, thereby having an affinity for polypropylene and polar polymers. Dicarboxylic acid-modified polypropylene with high viscosity, high solubility in organic solvents, and no deterioration in solution properties at low temperatures or rapid increase in viscosity during solution storageAnd its manufacturing methodIs to provide.
[0010]
[Means for Solving the Problems]
As a result of intensive research to solve the above problems, the present inventors have dissolved or kneaded soluble polypropylene having a racemic diad fraction [r] indicating the degree of stereoregularity of polypropylene in a specific range in an organic solvent. Dicarboxylic acid-modified polypropylene obtained by reacting unsaturated dicarboxylic acid in the presence of a radical initiator in the machine has sufficient affinity for polar materials and has high solubility in organic solvents. At the same time, it was found that there was no sudden increase in viscosity during storage of the solution, and the present invention was completed.
[0011]
  That is, according to the first invention of the present invention,¹³Racemic dyad fraction [r] measured by C-NMR is 0.12 to 0.88 (excluding 0.50)A dicarboxylic acid-modified polypropylene modified by reacting a certain polypropylene with an unsaturated dicarboxylic acid, and the polypropylene is a soluble polypropylene having a solubility in toluene at room temperature of 5 g or more.There is provided a dicarboxylic acid-modified polypropylene characterized in that an average of 0.5 or more dicarboxylic acids are bonded per polypropylene molecule and a weight average molecular weight (Mw) is 5,000 to 400,000.
[0012]
  According to the second invention of the present invention, in the first invention, ¹³ A polypropylene having a racemic dyad fraction [r] measured by C-NMR of 0.12 to 0.88 (excluding 0.50) is mixed with an unsaturated dicarboxylic acid and 50 to 200 in the presence of a radical reaction initiator. Denature by reacting at ℃Dicarboxylic acid-modified polypropylene characterized in thatManufacturing methodIs provided.
[0013]
As described above, the present invention¹³Although it relates to a dicarboxylic acid-modified polypropylene having a specific weight average molecular weight by binding a specific number of dicarboxylic acids per molecule of polypropylene having a racemic dyad fraction [r] measured by C-NMR in a specific range. The preferred embodiments include the following.
(1) The dicarboxylic acid-modified polypropylene according to the first aspect of the present invention, wherein the weight average molecular weight (Mw) is 10,000 to 250,000.
(2) The dicarboxylic acid-modified polypropylene according to the first aspect of the present invention, wherein the molecular weight distribution (Mw / Mn) is 1.01 to 3.00.
(3) A dicarboxylic acid-modified polypropylene having a molecular weight distribution (Mw / Mn) of 1.01 to 2.50 in the first invention of the present invention.
(4) In the first invention of the present invention, the dicarboxylic acid-modified polypropylene is characterized in that an average of 0.5 to 100 dicarboxylic acids are bonded.
(5) The dicarboxylic acid-modified polypropylene according to the first aspect of the present invention, characterized in that an average of 0.5 to 30 dicarboxylic acids are bonded.
(6) The dicarboxylic acid-modified polypropylene according to the second invention of the present invention, wherein the polypropylene is a soluble polypropylene having a solubility in polypropylene of 10 g or more at normal temperature.
(7) The dicarboxylic acid-modified polypropylene according to the second invention of the present invention, wherein the polypropylene is a soluble polypropylene having a solubility in polypropylene of 15 g or more at normal temperature.
(8) In the first or second invention of the present invention, the absorption peak derived from the crystal part of polypropylene is not observed in polypropylene at a room temperature IR measurement, and 973 cm^-1And / or 962 cm^-1And 977cm^-1An absorption peak is observed in the dicarboxylic acid-modified polypropylene.
(9) In the above (8), the absorption peak derived from the crystal part of polypropylene is 770 cm.^-1842cm^-1And 998cm^-1Or 870cm^-1And 1022 cm^-1A dicarboxylic acid-modified polypropylene characterized in that
(10) In the first invention of the present invention,¹³A dicarboxylic acid-modified polypropylene, which is a soluble isotactic polypropylene having a racemic dyad fraction [r] measured by C-NMR of 0.12 to 0.49.
(11) In the first invention of the present invention,¹³A dicarboxylic acid-modified polypropylene, which is a soluble syndiotactic polypropylene having a racemic diad fraction [r] measured by C-NMR of 0.51 to 0.88.
(12) The dicarboxylic acid-modified polypropylene according to the first or second aspect of the present invention, wherein the dicarboxylic acid is at least one selected from fumaric acid, itaconic acid, mesaconic acid, or glutaconic acid.
(13) A primer, paint, pressure-sensitive adhesive, adhesive, ink, compatibilizer, surface modifier and reactive polymer comprising the dicarboxylic acid-modified polypropylene according to the first or second invention of the present invention.
(14) The method for producing a dicarboxylic acid-modified polypropylene according to any one of (1) to (12) above, wherein the polypropylene is polymerized using a metal complex catalyst.
(15) The method for producing a dicarboxylic acid-modified polypropylene according to (14) above, wherein the metal complex catalyst is a vanadium complex and an organoaluminum compound.
(16) The catalyst comprising a metal complex catalyst selected from Ti, Zr, and Hf and / or a metal alkylamino complex selected from Ti, Zr, and Hf and an aluminoxane, a boron compound, or an organoaluminum compound. (14) The method for producing a dicarboxylic acid-modified polypropylene according to (14) above.
(17) A catalyst in which the metal complex catalyst comprises a metal having a cycloalkadienyl group or a derivative thereof selected from Ti, Zr, and Hf and a halogen or an alkyl group, and an aluminoxane, a boron compound, or an organoaluminum compound. (14) The method for producing a dicarboxylic acid-modified polypropylene according to (14) above.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the dicarboxylic acid-modified polypropylene of the present invention will be described in detail for each item.
[0015]
1. Base polymer (polypropylene)
As a base polymer as a raw material of the dicarboxylic acid-modified polypropylene of the present invention,¹³Polypropylene having a racemic dyad fraction [r] measured by C-NMR in the range of 0.12 to 0.88 (excluding 0.50) is used.
[0016]
The racemic dyad fraction [r] defined in the present invention indicates the degree of stereoregularity of polypropylene. For example, in the case of polypropylene having a 100% syndiotactic structure, the racemic dyad fraction [r] is 1. In the case of atactic polypropylene, the value of [r] is 0.50. The racemic dyad fraction [r] is determined by a method well known to those skilled in the art,¹³The value obtained from the peak intensity resulting from the stereoregular structure measured by C-NMR is used.
[0017]
The racemic dyad fraction [r] of the polypropylene used in the present invention is 0.12 to 0.88. However, a racemic diad fraction [r] of 0.50 is an atactic polypropylene and is excluded from the above range.
If the racemic dyad fraction [r] of the polypropylene is less than 0.12 or exceeds 0.88, the crystallinity of the polypropylene is increased, so that the solubility in an organic solvent is lowered and is not suitable for the polypropylene used in the present invention. .
[0018]
In the present invention, the polypropylene can be used by mixing two or more kinds of soluble polypropylene. When two or more types are mixed, it is desirable to mix those having greatly different stereoregularity such as a combination of soluble isotactic polypropylene and soluble syndiotactic polypropylene. As a result of mixing, when the racemic dyad fraction [r] becomes 0.50, it is not an atactic polypropylene, and is therefore included in the target range of the polypropylene used in the present invention.
[0019]
The IR measurement result of polypropylene can be used as an index of the solubility of polypropylene in an organic solvent. 770cm derived from crystalline isotactic polypropylene^-1842cm^-1And 998cm^-1870cm derived from polypropylene, crystalline syndiotactic polypropylene with an absorption peak observed in^-1, And 1022 cm^-1Polypropylene in which an absorption peak is observed is extremely low in solubility in an organic solvent such as toluene and cannot be used in the present invention. Absorption peak derived from the crystalline part of crystalline polypropylene as described above is not observed, and 973 cm derived from the amorphous part of isotactic polypropylene^-1And / or 962 cm derived from the amorphous part of syndiotactic polypropylene^-1, And 977 cm^-1Polypropylene having an absorption peak at is suitable for use as the base polymer of the present invention.
However, even when there is no absorption peak derived from crystalline polypropylene, the absorption peak attributed to the amorphous part of isotactic polypropylene and / or the amorphous part of syndiotactic polypropylene is not observed, and regularity is not observed. As an absorption peak derived from 968 cm derived from atactic polypropylene^-1Polypropylene in which only this peak is observed is outside the scope of the present invention.
These IR absorption peaks may slightly shift depending on measurement conditions and measurement equipment.
[0020]
The intent of the present invention is to have an organic solvent having a specific racemic dyad fraction [r] that does not include crystalline polypropylene that is sparingly soluble in organic solvents and atactic polypropylene that is difficult to achieve the objects of the present invention. Soluble polypropylene, that is, a soluble polypropylene having a specific solubility in toluene at room temperature, whereby a modified polypropylene capable of exhibiting the intended effect of the present invention can be obtained.
The solubility of polypropylene in toluene at room temperature is the number of grams of polypropylene that is a solute dissolved in 100 g of toluene as a solvent. In general, an excess solute is added to a solvent at room temperature (25 ° C.) and dissolved until completely saturated. Next, a certain amount of this solution is accurately measured, and after the solvent is completely blown, the rest is measured. And the gram number of the solute polypropylene in 100g of toluene which is a solvent is calculated | required. In the present invention, the solubility must be 5 g or more of soluble polypropylene.
[0021]
In the present invention, the base polypropylene has the racemic dyad fraction [r], the solubility in toluene, and the absorption peak of IR measurement (room temperature) as described above. If such a polypropylene can be produced, the production method is particularly limited. Not. Usually, it is obtained by polymerizing propylene in a solvent such as benzene, toluene, xylene, hexane, heptane, THF using a metal complex catalyst.
[0022]
The metal complex catalyst is a catalyst composed of an organometallic compound and an organoaluminum compound, or a catalyst comprising a metal complex composed of an organic compound containing a heteroatom such as oxygen or nitrogen and a transition metal as one component.
(1) A catalyst comprising a vanadium complex and an organoaluminum compound,
(2) A catalyst comprising an alkoxy complex of Ti, Zr, Hf and / or an alkylamino complex of Ti, Zr, Hf and an aluminoxane, a boron compound or an organoaluminum compound,
(3) A catalyst comprising a metal having a cycloalkadienyl group or a derivative thereof selected from the group consisting of titanium, zirconium and hafnium and a halogen or alkyl group, and an aluminoxane, a boron compound or an organoaluminum compound,
(4) A compound having one cycloalkadienyl group of a metal selected from the group consisting of titanium, zirconium and hafnium or a derivative thereof and at least one of an alkoxy group or an alkylamino group, an aluminoxane, a boron compound or an organic aluminum A catalyst comprising a compound,
(5) A catalyst comprising a diimine complex such as nickel or palladium and an aluminoxane.
[0023]
In the catalyst comprising the vanadium complex and the organoaluminum compound of (1) above, examples of the vanadium complex include those described in Makromol. Chem. 180, 57-64 (1979).
[0024]
Specifically, VOCl₃, VCl₄, V (acetylacetonate)₃, V (2-methyl-1,3-butanedionato)₃, V (1,3-butanedionate)₃, VO (acetylacetonate)₂, VOCl₂(Acetylacetonate), VOCl (acetylacetonate)₂, VO (OR)₃, V (benzoylacetonato)₃, V (benzoyl trifluoroacetonato)₃, V (dibenzoylmethanato)₃, V (Furoylacetonato)₃, V (trifluoroacetylacetonato)₃, V (3-phenylacetylacetonato)₃, V (2,4-hexanedinaoto)₃, V (trifluorodimethyl-2,4-hexanedionate)₃Etc. In addition, vanadium compounds such as general formulas (1) and (2) having a ligand such as alkylimide or arylimide are also included.
[0025]
Examples of the organoaluminum compound include dimethylaluminum chloride, diethylaluminum chloride, diethylaluminum bromide, diethylaluminum iodide, diisobutylaluminum chloride, ethylaluminum sesquichloride, ethylaluminum dichloride, isobutylaluminum dichloride and the like; And aluminoxanes.
[0026]
[Chemical 1]

[0027]
[Chemical formula 2]

[0028]
In the general formula (1), X is F, Cl, Br, I, a hydrocarbon group having 1 to 10 carbon atoms or an alkoxy group having 1 to 8 carbon atoms; R¹~ R³Each represents an alkyl group having 1 to 4 carbon atoms, and in general formula (2), X represents F, Cl, Br, I, a hydrocarbon group having 1 to 10 carbon atoms or an alkoxy group having 1 to 8 carbon atoms; R shows a C1-C4 alkyl group.
[0029]
The amount of the above components used is 1 × 10 5 of vanadium complex per mole of the total amount of α-olefin and alkadienyl alcohol monomer (hereinafter simply referred to as the amount of monomer used).^-5~ 0.1 mol, preferably 1 x 10^-4~ 5x10^-2Mol, and the organoaluminum compound is 1 × 10^-4~ 0.1 mol, preferably 5 x 10^-3-0.05 mol.
[0030]
In addition, an electron donor can be added to the catalyst of (1) as necessary. Examples of the electron donor include alcohols, phenols, ketones, aldehydes, carboxylic acids, malonic acids, and organic acids. Alternatively, oxygen-containing electron donors such as esters of inorganic acids, monoethers, diethers or polyethers, and nitrogen-containing electron donors such as ammonia, amines, nitriles, and isocyanates can be used. The usage-amount of an electron donor is 0.01-20 mol with respect to 1 mol of vanadium complexes.
[0031]
The copolymerization reaction is performed at a temperature of −100 to 100 ° C. for 0.5 to 50 hours, preferably at −90 to 50 ° C. for 1 to 30 hours, and more preferably at −80 to 30 ° C. for 1 to 15 hours. The molecular weight, molecular weight distribution and yield of the resulting polyolefin copolymer can be adjusted by controlling the reaction temperature and reaction time.
[0032]
In the catalyst (2), examples of the catalyst comprising an Ti, Zr, Hf alkoxy complex and / or an Ti, Zr, Hf alkylamino complex and an aluminoxane, a boron compound, or an organoaluminum compound include, for example, M (OR)._aX_4-a, M (NR₂)_aX_4-a, M (acac)₂X₂(M is Ti, Zr, Hf, a is an integer of 2 to 4, X is F, Cl, Br, I, R is a hydrocarbon group having 1 to 10 carbon atoms, acac is an acetylacetone ligand, Methylbutanedione ligand, butanedione ligand, benzoylacetone ligand, benzoyltrifluoroacetone ligand, dibenzoylmethane ligand, furoylacetone ligand, trifluoroacetylacetone ligand, 3-phenyl An acetylacetone ligand, a 2,4-hexanedione ligand, a trifluorodimethyl-2,4-hexanedione ligand, etc.).
[0033]
Specific compounds include Ti (OC₂H₅)₄, Ti (On-C₃H₇)₄, Ti (O-i-C₃H₇)₄, Ti (On-C₄H₉)₄, Ti (O-i-C₄H₉)₄, Ti (O-s-C₄H₉)₄, Ti (O-t-C₄H₉)₄, Ti (O-cycloC₅H₉)₄, Ti (OC₅H₁₁)₄, Ti (OC₆H₅)₄, Ti (O-cycloC₆H₁₁)₄, Ti (OC₆H₁₃)₄, Ti (OC₂H₅)₂Cl₂, Ti (O-i-C₃H₇)₂Cl₂, Ti (On-C₃H₇)₂Br₂, Ti (On-C₄H₉)₂Cl₂, Ti (O-i-C₄H₉)₂Br₂, Ti (O-s-C₄H₉)₂I₂, Ti (OC₅H₁₁)₂Cl₂, Ti (O-cycloC₆H₁₁)₂F₂, Ti [N (C₂H₅]]₄, Ti [N (n-C₃H₇]]₄, Ti [N (i-C₃H₇]]₄, Ti [N (n-C₄H₉]]₄, Ti [N (i-C₄H₉]]₄, Ti [N (s-C₄H₉]]₄, Ti [N (t-C₄H₉]]₄, Ti [N (cycloC₅H₉]]₄, Ti [N (C₅H₁₁]]₄, Ti [N (C₆H₅]]₄, Ti [N (cycloC₆H₁₁]]₄, Ti [N (C₆H₁₃]]₄, Ti [N (C₂H₅)₂]₂Cl₂, Ti [N (n-C₃H₇)₂]₂Cl₂, Ti [N (i-C₃H₇)₂]₂Br₂, Ti [N (s-C₄H₉)₂]₂Cl₂, Ti [N (n-C₄H₉)₂]₂Br₂, Ti [N (t-C₄H₉)₂]₂I₂, Ti [N (C₅H₁₁)₂]₂F₂, Ti [N (C₅H₁₁)₂]₂Cl₂Ti (acetylacetonate)₂Cl₂, Ti (methylbutanedionato)₂Cl₂, Ti (butanedionato)₂Cl₂, Ti (benzoylacetonato)₂Br₂, Ti (benzoyl trifluoroacetonato)₂F₂, Ti (dibenzoylmethanato)₂I₂, Ti (Furoylacetonato)₂Br₂Ti (trifluoroacetylacetonato)₂Br₂, Ti (2,4-hexanedionate)₂Cl₂, Zr (OC₂H₅)₄, Zr (On-C₃H₇)₄, Zr (O-i-C₃H₇)₄, Zr (On-C₄H₉)₄, Zr (O-i-C₄H₉)₄, Zr (O-s-C₄H₉)₄, Zr (Ot-C₄H₉)₄, Zr (O-cycloC₅H₉)₄, Zr (OC₅H₁₁)₄, Zr (OC₆H₅)₄, Zr (O-cycloC₆H₁₁)₄, Zr (OC₆H₁₃)₄, Zr (OC₂H₅)₂Cl₂, Zr (O-i-C₃H₇)₂Cl₂, Zr (On-C₃H₇)₂Br₂, Zr (On-C₄H₉)₂Cl₂, Zr (O-i-C₄H₉)₂Br₂, Zr (O-s-C₄H₉)₂I₂, Zr (OC₅H₁₁)₂Cl₂, Zr (O-cycloC₆H₁₁)₂F₂, Zr [N (C₂H₅]]₄, Zr [N (n-C₃H₇]]₄, Zr [N (i-C₃H₇]]₄, Zr [N (n-C₄H₉]]₄, Zr [N (i-C₄H₉]]₄, Zr [N (s-C₄H₉]]₄, Zr [N (t−C₄H₉]]₄, Zr [N (cycloC₅H₉]]₄, Zr [N (C₅H₁₁]]₄, Zr [N (C₆H₅]]₄, Zr [N (cycloC₆H₁₁]]₄, Zr [N (C₆H₁₃]]₄, Zr [N (C₂H₅)₂]₂Cl₂, Zr [N (n-C₃H₇)₂]₂Cl₂, Zr [N (i-C₃H₇)₂]₂Br₂, Zr [N (s-C₄H₉)₂]₂Cl₂, Zr [N (n-C₄H₉)₂]₂Br₂, Zr [N (t−C₄H₉)₂]₂I₂, Zr [N (C₅H₁₁)₂]₂F₂, Zr [N (C₅H₁₁)₂]₂Cl₂, Zr (acetylacetonato)₂Cl₂, Zr (methylbutanedionato)₂Cl₂, Zr (Butandionato)₂Cl₂, Zr (benzoylacetonato)₂Br₂, Zr (benzoyltrifluoroacetonato)₂F₂, Zr (dibenzoylmethanato)₂I₂, Zr (Furoylacetonato)₂Br₂, Zr (trifluoroacetylacetonato)₂Br₂, Zr (2,4-hexanedionate)₂Cl₂, Hf (OC₂H₅)₄, Hf (On-C₃H₇)₄, Hf (O-i-C₃H₇)₄, Hf (On-C₄H₉)₄, Hf (O-i-C₄H₉)₄, Hf (O-s-C₄H₉)₄, Hf (Ot-C₄H₉)₄, Hf (O-cycloC₅H₉)₄, Hf (OC₅H₁₁)₄, Hf (OC₆H₅)₄, Hf (O-cycloC₆H₁₁)₄, Hf (OC₆H₁₃)₄, Hf (OC₂H₅)₂Cl₂, Hf (O-i-C₃H₇)₂Cl₂, Hf (On-C₃H₇)₂Br₂, Hf (On-C₄H₉)₂Cl₂, Hf (O-i-C₄H₉)₂Br₂, Hf (O-s-C₄H₉)₂I₂, Hf (OC₅H₁₁)₂Cl₂, Hf (O-cycloC₆H₁₁)₂F₂, Hf [N (C₂H₅]]₄, Hf [N (n-C₃H₇]]₄, Hf [N (i-C₃H₇]]₄, Hf [N (n-C₄H₉]]₄, Hf [N (i-C₄H₉]]₄, Hf [N (s-C₄H₉]]₄, Hf [N (t−C₄H₉]]₄, Hf [N (cycloC₅H₉]]₄, Hf [N (C₅H₁₁]]₄, Hf [N (C₆H₅]]₄, Hf [N (cycloC₆H₁₁]]₄, Hf [N (C₆H₁₃]]₄, Hf [N (C₂H₅)₂]₂Cl₂, Hf [N (n-C₃H₇)₂]₂Cl₂, Hf [N (i-C₃H₇)₂]₂Br₂, Hf [N (s-C₄H₉)₂]₂Cl₂, Hf [N (n-C₄H₉)₂]₂Br₂, Hf [N (t−C₄H₉)₂]₂I₂, Hf [N (C₅H₁₁)₂]₂F₂, Hf [N (C₅H₁₁)₂]₂Cl₂, Hf (acetylacetonato)₂Cl₂, Hf (methylbutanedionato)₂Cl₂, Hf (Butandionato)₂Cl₂, Hf (benzoylacetonato)₂Br₂, Hf (benzoyl trifluoroacetonato)₂F₂, Hf (Dibenzoylmethanato)₂I₂, Hf (Furoylacetonato)₂Br₂, Hf (trifluoroacetylacetonato)₂Br₂, Hf (2,4-hexanedionate)₂Cl₂, Etc.
[0034]
Examples of aluminoxanes include methylaluminoxane, ethylaluminoxane, isobutylaluminoxane, and dry aluminoxane obtained by removing and purifying unreacted aluminum compounds in these aluminoxanes. In place of aluminoxanes, boron compounds such as triphenylborane, trispentafluorophenylborane, triphenylmethyltrispentafluoroborate are used alone or in combination with an organoaluminum compound such as trialkylaluminum or alkylaluminum halide. be able to. Furthermore, organoaluminum compounds such as dimethylaluminum chloride, diethylaluminum chloride, diethylaluminum bromide, diisobutylaluminum chloride, dioctylaluminum chloride and ethylaluminum sesquichloride can also be used.
[0035]
The amount of the above components used is 1 × 10 for the metal complex per mole of monomer used.^-5~ 0.5 mol, preferably 1 x 10^-4~ 0.1 mol, and aluminoxane, boron compound or organoaluminum compound is 1 × 10^-6~ 0.5 mol, preferably 1 x 10^-5~ 0.1 mol.
[0036]
The copolymerization reaction is performed at a temperature of −100 to 100 ° C. for 0.5 to 50 hours, preferably at −80 to 80 ° C. for 1 to 30 hours.
[0037]
(3) a catalyst comprising two metal cycloalkadienyl groups or derivatives thereof selected from the group consisting of titanium, zirconium and hafnium, a complex having a halogen or an alkyl group, and an aluminoxane, a boron compound or an organoaluminum compound. In this case, the complex is selected such that two cycloalkadienyl groups or derivatives thereof are not crosslinked or are crosslinked at two positions.
[0038]
Examples of the non-crosslinkable metallocene compound include a compound represented by the general formula (3), specifically, (cyclopentadienyl) (fluorenyl) zirconium dichloride, (cyclopentadienyl) (fluorenyl) zirconium. Examples include dimethyl, (cyclopentadienyl) (fluorenyl) zirconium diethyl, (cyclopentadienyl) (fluorenyl) titanium dichloride, (cyclopentadienyl) (fluorenyl) hafnium dichloride, and the like. Other, for example, (C₅H₅)₂Zr (C₆H₅)₂, (C₅H₄-I-C₃H₇)₂ZrCl₂, (C₅H₄-T-C₄H₉)₂ZrCl₂, (C₅H₄-T-C₄H₉)₂ZrBr₂, (C₅H₄-T-C₄H₉)₂ZrI₂, (C₅H₄-T-C₄H₉)₂ZrF₂, (C₅H₄-T-C₄H₉)₂Zr (CH₃)₂, (C₅H₄-T-C₄H₉)₂Zr (C₆H₅)₂, [C₅H₄-CH (CH₃) (C₆H₅]]₂ZrCl₂, Etc.
[0039]
Moreover, as a 2 bridge | crosslinking metallocene, it is shown by General formula (4), for example. Am. Chem. Soc. Vol. 121, no. 3, 565 (1999), specifically, (1,2-Me₂Si)₂(Η⁵―C₅H₃)₂ZrCl₂, (1,2-Me₂Si)₂(Η⁵―C₅H₃) (Η⁶―C₅H₂-3-CH₃) ZrCl₂, (1,2-Me₂Si)₂(Η⁵―C₅H₃) {Η⁶―C₅H₂-3-CH (CH₃)₂} ZrCl₂, (1,2-Me₂Si)₂(Η⁵―C₅H₃) {Η⁵―C₅H-3,5- (CH (CH₃)₂}₂ZrCl₂, (1,2-Me₂Si)₂(Η⁵―C₅H₂-4-CH₃) {Η⁵―C₅H-3,5- (CH (CH₃)₂)₂} ZrCl₂, (1,2-Me₂Si)₂{Η⁵―C₆H₅-4-CH (CH₃)₃} {Η⁵―C₅H-3,5- (CH (CH₃)₂)₂} ZrCl₂, (1,2-Me₂Si)₂{Η⁵―C₅H₂-4-Si (CH₃)₃} {Η⁵―C₅H-3,5- (CH (CH₃)₂)₂} ZrCl₂, (1,2- (C₆H₅)₂Si)₂{Η⁵―C₅H₂-4-Si (CH₃)₃} {Η⁵―C₅H-3,5- (CH (CH₃)₂)₂} ZrCl₂, (1,2-Me₂Si)₂{Η⁵―C₅H₂-4-Si (CH₃)₃} {Η⁵―C₅H-3,5- (CH (CH₃)₂)₂} Zr (CH₃)₂, (1,2-Me₂Si)₂(Η⁵―C₅H₃)₂HfCl₂, (1,2-Me₂Si)₂(Η⁵―C₅H₃) (Η⁵―C₅H₂-3-CH₃) HfCl₂, (1,2-Me₂Si)₂(Η⁵―C₅H₃)₂TiCl₂, (1,2-Me₂Si)₂(Η⁵―C₅H₃) (Η⁵―C₅H₂-3-CH₃) TiCl₂, Etc.
[0040]
General formula (3)
[Chemical 3]

[0041]
General formula (4)
[Formula 4]

[0042]
In general formulas (3) and (4), R¹~ R³Each represents H or an aliphatic hydrocarbon group having 1 to 8 carbon atoms. X represents a halogen, an aliphatic hydrocarbon group having 1 to 8 carbon atoms, or an aromatic hydrocarbon group having 8 to 10 carbon atoms. M is any metal of Ti, Zr, and Hf. R¹~ R³May be the same or different at the same time.
[0043]
Aluminoxanes and boron compounds alone or in combination with organoaluminum compounds can be used, and those described in (2) can be used.
The amount of the above components used is 5.0 × 10 5 metallocene compound per mole of monomer used.^-7~ 5.0 × 10^-3Mole, preferably 1.0 × 10^-6~ 1.0 × 10^-4Molar and 1.0 × 10 5 of aluminoxane, boron compound or organoaluminum compound^-5-5.0 mol, preferably 1.0 x 10^-3~ 0.1 mol.
[0044]
The copolymerization reaction is performed at a temperature of −100 to 90 ° C. for 0.1 to 100 hours, preferably at −50 to 50 ° C. for 1 to 50 hours.
[0045]
In the catalyst of (4), the compound having one cycloalkadienyl group of a metal selected from the group consisting of titanium, zirconium and hafnium or a derivative thereof and at least one of an alkoxy group or an alkylamino group may be represented by the general formula ( The compounds as shown in 5) to (7) are mentioned.
[0046]
For example, as the compound represented by the general formula (5), CpTi (OMe)₃, CpTi (OEt)₃, CpTi (O · iPr)₃, CpTi (O · tBu)₃, CpTi (OC₆H₅)₃, CpTi (2-Me-OC₆H₄)₃, CpTi (2-Et-OC₆H₄)₃, CpTi (2-Pr-OC₆H₄)₃, CpTi (2-tBu-OC₆H₄)₃, CpTi (2,6-Me₂-OC₆H₃)₃, CpTi (2,6-Et₂-OC₆H₃)₃, CpTi (2,6-iPr₂-OC₆H₃)₃, CpTi (2,6-tBu₂-OC₆H₃)₃, CpTi (2-Me-6-tBu-OC₆H₃)₃, CpTi (3-Me-6-tBu-OC₆H₃)₃, CpTi (OMe) Cl₂, CpTi (OMe)₂Cl, CpTi (OC₆H₅) Cl₂, CpTi (OC₆H₅)₂Cl, CpTi (OMe) (OC₆H₅) Cl, etc., and examples of the compound represented by the general formula (6) include (Me₂C) Cp (C₆H₄) OTiCl₂, ((C₆H₅)₂C) Cp (C₆H₄) OTiCl₂, (Me₂C) Cp (3-Me-C₆H₃) OTiCl₂, (Me₂C) Cp (5-Me-C₆H₃) OTiCl₂, (Me₂C) Cp (3-tBu-C₆H₃) OTiCl₂, (Me₂C) Cp (3,5-Me₂-C₆H₂) OTiCl₂, (Me₂C) Cp (3,5-tBu₂-C₆H₂) OTiCl₂, (Me₂C) Cp (3-Me-5-tBu-C₆H₂) OTiCl₂, (Me₂C) Cp (3-tBu-5-Me-C₆H₂) OTiCl₂, Etc.
[0047]
Moreover, as a compound represented by General formula (7), MeNSiMe is used.₂(Flu) TiCl₂, TBuNSiMe₂(Flu) TiCl₂, C₆H₅NSiMe₂(Flu) TiCl₂, TBuNSi (C₆H₅)₂(Flu) TiCl₂, TBuNSiMe₂(Flu) TiMe₂, Etc.
[0048]
General formula (5)-(7)
[Chemical formula 5]

[0049]
In the general formulas (5) to (7), X, Y, and Z are halogen selected from F, Cl, Br, or I, an aliphatic hydrocarbon group having 1 to 8 carbon atoms, an alkoxy group thereof, and a substituent. An aromatic hydrocarbon group having 6 to 14 carbon atoms which may have an alkoxy group thereof; R¹~ R³Represents an aliphatic hydrocarbon group having 1 to 8 carbon atoms and an aromatic hydrocarbon group having 6 to 14 carbon atoms which may have a substituent. R¹~ R³X, Y and Z may be the same or different at the same time.
[0050]
In addition, aluminoxanes and boron compounds alone or in combination with organoaluminum compounds can be used, and those described in (2) can be used.
[0051]
The amount of the compound having one cycloalkadienyl group of a metal selected from the group consisting of titanium, zirconium, and hafnium or a derivative thereof and at least one alkoxy group or alkylamino group is 1 × per mole of monomer used. 10^-8~ 0.1 mol, preferably 1 x 10^-7~ 5x10^-21 × 10 for aluminoxanes, boron compounds or organoaluminum compounds^-8~ 0.1 mol, preferably 1 x 10^-7-0.05 mol.
[0052]
The copolymerization reaction is performed at a temperature of −100 to 90 ° C. for 0.5 to 100 hours, preferably at −50 to 50 ° C. for 1 to 50 hours.
[0053]
In the catalyst consisting of diimine complexes such as nickel and palladium and aluminoxane of (5), examples of the diimine complexes such as nickel and palladium include compounds represented by general formulas (8) to (11). It is done.
Examples of aluminoxanes include methylaluminoxane, ethylaluminoxane, butylaluminoxane, and the like.
[0054]
General formula (8)-(11)
[Chemical 6]

[0055]
In the general formulas (8) to (11), X represents a Cl or methyl (Me) group; R represents a methyl (Me) group or an isopropyl (iPr) group, and may be the same or different at the same time.
[0056]
The amount of diimine complex such as nickel or palladium used is 1 × 10 5 per mole of monomer used.^-6~ 0.1 mol, preferably 5 x 10^-6~ 5x10^-2Mol and aluminoxane is 1 × 10^-6~ 0.1 mol, preferably 5 x 10^-4-0.05 mol.
[0057]
The copolymerization reaction is performed at a temperature of −100 to 90 ° C. for 0.5 to 100 hours, preferably at −50 to 50 ° C. for 1 to 50 hours.
[0058]
In the present invention, polypropylene can be produced using the above-mentioned catalyst, but it can be produced preferably using the catalysts (1) to (3), particularly preferably (1). When the catalysts (1) to (5) are used, hydrogen, diethylzinc and Si—H bond-containing compounds can be added as molecular weight regulators. The catalysts (1) to (5) can be used by being supported on a carrier such as silica, alumina, zirconia, titania and the like.
[0059]
The polypropylene according to the present invention is¹³If the racemic dyad fraction [r] measured by C-NMR is in the range of 0.12 to 0.88 (excluding 0.50), it is less than 10 mol% of ethylene, α-olefin or diolefin. A copolymer may also be used. The α-olefin preferably has 4 to 8 carbon atoms, and the diolefin preferably has 4 to 14 carbon atoms. Specifically, the α-olefin includes 1-butene, 1-hexene, 4-methyl-1-pentene, and the diolefin includes butadiene, 1,5-hexadiene, 1,7-octadiene, 1, Examples include 9-decadiene. In order to obtain sufficient affinity with polypropylene, a homopolymer of propylene is preferred.
In addition, the polypropylene of the present invention thus obtained is, for example, saturated aliphatic hydrocarbons such as pentane, hexane, and heptane, saturated alicyclic hydrocarbons such as cyclohexane and cyclopentane, benzene, toluene, xylene and the like. It is soluble in aromatic hydrocarbons, and the solubility of polypropylene in toluene at room temperature is preferably 5 g or more, more preferably 10 g or more and 100 g or less, and particularly preferably 15 g or more and 50 g or less.
[0060]
2. Dicarboxylic acid-modified polypropylene
The dicarboxylic acid-modified polypropylene of the present invention is¹³Polypropylene having a racemic dyad fraction [r] measured by C-NMR in the range of 0.12 to 0.88 (excluding 0.50) and having the absorption peak of IR measurement as described above as an organic solvent. It can be obtained by dissolving or reacting in a kneader with one or more unsaturated dicarboxylic acids in the presence of a radical reaction initiator.
[0061]
Examples of organic solvents include saturated aliphatic hydrocarbons such as propane, butane, pentane, hexane, heptane, nonane and decane, saturated alicyclic hydrocarbons such as cyclopropane and cyclohexane, and aromatic hydrocarbons such as benzene, toluene and xylene. Etc. are used.
[0062]
Examples of the radical reaction initiator include azo compounds such as azobisisobutyronitrile and 2,2-azobis (2,4-dimethylvaleronitrile), benzoyl peroxide, and t-butylperoxy-2-ethylhexano. And peroxides such as 2,5-dimethyl-2,5-di-t-butylperoxyhexane can be used.
[0063]
The unsaturated dicarboxylic acid used in the present invention is either an unsaturated aliphatic dicarboxylic acid having 4 to 12 carbon atoms or an unsaturated alicyclic dicarboxylic acid. The unsaturated bond of the unsaturated dicarboxylic acid may be a double bond or a triple bond, and the number of unsaturated bonds is not limited to one but may be plural.
Furthermore, the unsaturated dicarboxylic acid may have a substituent such as an ester group, an ether group, a ketone group, a hydroxyl group, or an amino group in addition to the carboxyl group.
[0064]
Examples of the unsaturated aliphatic dicarboxylic acid include alkene dicarboxylic acids such as ethylene dicarboxylic acid and propylene dicarboxylic acid, alkadiene dicarboxylic acids, alkatriene dicarboxylic acids, and alkyne dicarboxylic acids.
[0065]
Specifically, fumaric acid is used as ethylene dicarboxylic acid, and itaconic acid [CH is used as propylene dicarboxylic acid.₂= C (COOH) -CH₂-COOH], mesaconic acid [trans-CH₃-C (COOH) = CHCOOH], glutaconic acid [(COOH) -CH₂-CH = CHCOOH: there are cis- and trans-forms].
[0066]
As alkenedicarboxylic acid, in addition to the above, vinyl succinic acid [CH₂= CH-CH (COOH) -CH₂Butene dicarboxylic acids such as -COOH], allyl succinic acid [CH₂= CH-CH₂CH (COOH) -CH₂Pentene dicarboxylic acids such as COOH], hexene dicarboxylic acids, heptene dicarboxylic acids, octene dicarboxylic acids, nonene dicarboxylic acids, decene dicarboxylic acids and derivatives thereof can be used.
[0067]
Further, examples of the alkadiene dicarboxylic acid include propanediene dicarboxylic acid (HOOC—CH═C═CH—COOH), butadiene dicarboxylic acids such as vinyl fumaric acid and vinyl maleic acid, hexadiene dicarboxylic acids such as pentadiene dicarboxylic acids and butenyl maleic acid. Examples thereof include acids, heptadiene dicarboxylic acids, octadiene dicarboxylic acids, nonadiene dicarboxylic acids, decadiene dicarboxylic acids, and derivatives thereof.
[0068]
On the other hand, as the unsaturated alicyclic dicarboxylic acid, cycloalkene dicarboxylic acid, cycloalkadiene dicarboxylic acid, cycloalkatriene dicarboxylic acid, cycloalkyne dicarboxylic acid and the like can be used.
[0069]
For example, cycloalkene dicarboxylic acids include cyclopentene dicarboxylic acids, cyclohexene dicarboxylic acids, cycloheptene dicarboxylic acids, cyclooctene dicarboxylic acids, cyclononene dicarboxylic acids, cyclodecene dicarboxylic acids, and derivatives thereof.
[0070]
Specific examples of the cyclohexene dicarboxylic acids include cyclohexene-1,2-dicarboxylic acid, cyclohexene-1,3-dicarboxylic acid, cyclohexene-1,4-dicarboxylic acid, cyclohexene-1,5-dicarboxylic acid, and cyclohexene-1. 1,6-dicarboxylic acid, cyclohexene-2,5-dicarboxylic acid, cyclohexene-3,4-dicarboxylic acid, cyclohexene-3,5-dicarboxylic acid, cyclohexene-4,5-dicarboxylic acid and the like.
[0071]
Specific examples of the cycloalkadiene dicarboxylic acid include cyclopentadiene dicarboxylic acids, cycloheptadiene dicarboxylic acids, cyclooctadiene dicarboxylic acids such as dihydrophthalic acid, dihydroisophthalic acid, and dihydroterephthalic acid, and derivatives thereof. Examples thereof include diene dicarboxylic acids, cyclononadiene dicarboxylic acids, cyclodecadiene dicarboxylic acids, and derivatives thereof.
Furthermore, bialicyclic alkene dicarboxylic acids such as endomethylenetetrahydrophthalic acid and methylendomethylenetetrahydrophthalic acid may be used.
[0072]
Particularly preferred dicarboxylic acids in the present invention are fumaric acid, itaconic acid, mesaconic acid and glutaconic acid.
As mentioned above, although dicarboxylic acid was explained in full detail, in this invention, not only this but the compound like a tricarboxylic acid and tetracarboxylic acid which has three or more carboxyl groups is not excluded.
[0073]
In the production method according to the present invention, in order to introduce dicarboxylic acid into polypropylene, for example, polypropylene is dissolved in an organic solvent such as heptane, and in a nitrogen atmosphere, such as t-butylperoxy-2-ethylhexanoate is obtained. The reaction is conducted with an unsaturated dicarboxylic acid such as fumaric acid or two or more unsaturated dicarboxylic acids in the presence of a radical initiator. As reaction temperature, 50-200 degreeC is preferable, More preferably, it is 70-180 degreeC. The reaction time is 3 to 200 minutes, and 5 to 100 minutes is particularly preferable.
[0074]
By the above method¹³On average, 0.5 or more dicarboxylic acids per molecule of polypropylene having a racemic dyad fraction [r] measured by C-NMR in the range of 0.12 to 0.88 (excluding 0.50), preferably Can produce a polymer having an average of 0.5 to 100, in particular an average of 0.5 to 30, ie a dicarboxylic acid-modified polypropylene.
[0075]
The weight average molecular weight (Mw) of the dicarboxylic acid-modified polypropylene according to the present invention is 5,000 to 400,000, preferably 10,000 to 250,000. The molecular weight distribution (Mw / Mn) is 1.01 to 3.00, preferably 1.1 to 2.5.
[0076]
This modified polypropylene is a soluble polypropylene having a racemic dyad fraction [r] of 0.12 to 0.88 (excluding 0.50) modified with dicarboxylic acid, so that it is soluble in organic solvents such as toluene. It has high affinity with polypropylene and high affinity with polypropylene, and it has high affinity with polar resin. By using unsaturated dicarboxylic acid instead of dicarboxylic anhydride as a modifier, solution properties such as viscosity increase It has the feature of not causing deterioration.
[0077]
Therefore, the modified polypropylene of the present invention can be used as a primer, paint, pressure-sensitive adhesive, adhesive, ink, reactive polymer, surface modifier, coating agent, or a compatibilizer between polypropylene and other polymers. . Particularly preferred uses are primers, paints, adhesives, adhesives, inks, reactive polymers, or compatibilizers.
[0078]
【Example】
The present invention will be described more specifically with reference to the following examples. However, the present invention is not limited to these examples.
In addition, the analysis of the polymer in a present Example and a comparative example was performed based on the evaluation method shown next.
[0079]
(1) Measurement of molecular weight
The molecular weight was measured using a GPC (gel permeation chromatography) model 150 manufactured by Waters. The measurement conditions were o-dichlorobenzene as a solvent, a measurement temperature of 135 ° C., and a solvent flow rate of 1.0 ml / min. As the column, a standard curve of polystyrene was obtained using a monodisperse polystyrene standard sample manufactured by Tosoh Corporation, and a calibration curve of polypropylene was created by the universal method, and the molecular weight of polypropylene was measured.
[0080]
(2) Measurement of stereoregularity
¹³C-NMR uses a Varian XL-200 model with a PFT pulse Fourier transform device, and has stereoregularity under the conditions of 50 MHz, 120 ° C., a pulse width of 8.2 μsπ / 3, a pulse interval of 4 seconds, and a cumulative number of 5000 It was measured. The sample was prepared by dissolving in a mixed solution of trichlorobenzene and benzene (2: 1).
[0081]
(3) Measurement of introduction amount of dicarboxylic acid into polypropylene (dicarboxylic acid / one molecule of polypropylene)
The amount of dicarboxylic acid introduced was determined by analyzing the absorption peak by infrared absorption spectrum (IR) measurement. For IR measurement, a polymer made into a film using FT / IR-470 manufactured by JASCO Corporation was used.
[0082]
(4) Solubility
The solubility of the polymer in the solvent was evaluated by measuring the solubility in toluene. The measurement method and evaluation criteria were as follows: polypropylene solubility (g) was measured with respect to 100 g of toluene at 25 ° C., and polypropylene solubility ≧ 15 g: ○, 15 g> solubility ≧ 5 g: Δ, 5 g> solubility: x. Similarly, the solubility (g) of the dicarboxylic acid-modified polypropylene was also measured, and the solubility of the dicarboxylic acid-modified polypropylene was ≧ 15 g: ○, 15 g> solubility ≧ 5 g: Δ, 5 g> solubility: x.
[0083]
(5) Viscosity
The viscosity was measured using a B-type viscometer using a 15% toluene solution of the polymer as a sample. The solution stored at −10 ° C. for 2 weeks was measured for viscosity after raising the temperature to 25 ° C.
[0084]
(6) Affinity
The affinity for polypropylene was determined by applying a toluene solution of the obtained polymer to a PP plate at room temperature and drying at 100 ° C. for 1 hour, and then performing a base tape test according to JIS K-5400. ○: Adhesion rate = 100%, Δ: Adhesion rate ≧ 90%, X: Adhesion rate <90%.
[0085]
Example 1
(1) Polymerization of propylene
150 mL of toluene was put in a 2 L autoclave equipped with a stirrer and sufficiently substituted with nitrogen gas, and kept at −60 ° C. At the same temperature, 30 mL of a 2 mol / L diethylaluminum chloride toluene solution was added. Next, 12 mmol of diisobutyl phthalate was added. Thereafter, 8.3 mol of propylene was introduced with stirring. Finally, 0.1 mol / L V (mbd)₃7 mL of a toluene solution was added to initiate polymerization. The polymerization was carried out for 8 hours (see Table 1).
Polymerization was stopped by putting the reaction solution in 5 L of methanol cooled to −60 ° C. and precipitating the polymer. The polymer obtained was washed 5 times with methanol and dried at room temperature. The polymer yield was 46 g. The GPC curve of the polymer was unimodal, the weight average molecular weight Mw was 130,000, and the value of Mw / Mn was 1.4. The analysis results of the polymer are shown in Table 2.
Observed by IR, 962cm^-1And 977cm^-1There was an absorption peak at 973 cm^-1There is no absorption peak at the position of 770 cm^-1842cm^-1870cm^-1998cm^-1, And 1022 cm^-1Since no absorption peak was observed at the position, it was confirmed that the polypropylene obtained in Example 1 was a soluble syndiotactic polypropylene. Moreover, the solubility of polypropylene in toluene at room temperature was 15 g or more.
[0086]
[Table 1]

[0087]
[Table 2]

[0088]
(2) Introduction of dicarboxylic acid into polypropylene
The polypropylene obtained in the above (1) was denatured with fumaric acid using a Laboplastyl model 50C150 manufactured by Toyo Seiki Seisakusho. The kneading temperature was set at 170 ° C., and the inside of the mixer was sufficiently purged with nitrogen. Then, 35 g of polypropylene and 6 g of fumaric acid were introduced under a nitrogen stream, and kneaded at 150 rpm for 3 minutes. Thereafter, 0.6 g of 2,5-dimethyl-2,5-di-t-butylperoxyhexane was added as a radical reaction initiator under a nitrogen stream and kneaded at 150 rpm for 3 minutes (see Table 3).
This 2,5-dimethyl-2,5-di-t-butylperoxyhexane addition and kneading operation was repeated three times in total, and then the polymer was recovered. 10 g of the collected polymer was dissolved in 90 mL of toluene, and insoluble unreacted fumaric acid was filtered off. The filtrate was poured into 4 L of acetone to precipitate the polymer. The precipitated polymer was washed 5 times with 2 L of acetone and dried under reduced pressure at room temperature.
When IR measurement of the polymer was performed, 1720 cm^-1In addition, absorption based on the carbonyl group of dicarboxylic acid was observed.
Further, when 1H-NMR was measured, a peak derived from methylene succinate was observed in the vicinity of 3 ppm. From these IR and NMR results, it was confirmed that fumaric acid was introduced into the polypropylene chain.
1720cm observed by IR^-1Due to absorption and PP of 1460cm^-1The amount of dicarboxylic acid introduced into the polypropylene can be determined from the intensity ratio of absorption. From this value and molecular weight, it was revealed that 3.7 fumaric acids were introduced per polypropylene molecule (see Table 4).
[0089]
[Table 3]

[0090]
[Table 4]

[0091]
(3) Evaluation of dicarboxylic acid-modified polypropylene
For the fumaric acid-modified polypropylene obtained in (2), the solubility in toluene and the viscosity of a 15 wt% toluene solution were measured. Moreover, the affinity with respect to polypropylene was measured. The results are shown in Table 5. It can be seen that this polymer is well dissolved in toluene, has a low viscosity, and does not increase in viscosity due to storage.
[0092]
[Table 5]

[0093]
(Examples 2 to 4)
(1) Polymerization of propylene
In the same manner as in Example 1, polymerization of propylene was carried out under the conditions shown in Table 1 to obtain polymers shown in Table 2.
(2) Introduction of fumaric acid into polypropylene
In the same manner as in Example 1, the polypropylene was modified under the conditions shown in Table 3 to obtain fumaric acid-modified polypropylene shown in Table 4. This modified polypropylene was evaluated in the same manner, and the results are shown in Table 5.
[0094]
(Example 5)
(1) Polymerization of propylene
In the same manner as in Example 1, polymerization of propylene was carried out under the conditions shown in Table 1 to obtain polymers shown in Table 2.
(2) Introduction of dicarboxylic acid into polypropylene
Using a 100 mL autoclave equipped with a stirrer whose interior was replaced with nitrogen gas, 5 g of the above polymer was dissolved in 20 g of decane previously bubbled with nitrogen, and 3 g of itaconic acid was added thereto.
The reaction system was heated to 110 ° C. and stirred for 20 minutes. 0.2 g of 2,5-dimethyl-2,5-di-t-butylperoxyhexane was added, and the mixture was further stirred for 20 minutes. The addition of 2,5-dimethyl-2,5-di-t-butylperoxyhexane and the subsequent stirring for 20 minutes were repeated a total of 10 times.
Thereafter, 50 g of decane at room temperature was added, and the autoclave was further quenched to stop the reaction. Unreacted itaconic acid was filtered off, and the filtrate was poured into 4 L of acetone to precipitate a polymer. The precipitated polymer was washed 5 times with 2 L of acetone and dried under reduced pressure at room temperature.
By this operation, polymers listed in Table 4 were obtained. This itaconic acid-modified polypropylene was evaluated in the same manner as described above, and the results are shown in Table 5.
[0095]
(Examples 6 to 12)
(1) Polymerization of propylene
In the same manner as in Example 1, polymerization of propylene was carried out under the conditions shown in Table 1 to obtain polymers shown in Table 2.
(2) Introduction of dicarboxylic acid into polypropylene
Except for Examples 8 and 11, polypropylene was modified using a solvent in the same manner as in Example 5 under the conditions shown in Table 3 to obtain dicarboxylic acid-modified polypropylene shown in Table 4. In Examples 8 and 11, polypropylene was modified in the absence of solvent (kneading) under the conditions shown in Table 3 in the same manner as in Example 1. This dicarboxylic acid-modified polypropylene was evaluated in the same manner, and the results are shown in Table 5.
[0096]
(Comparative Examples 1 and 2)
(1) Polymerization of propylene
Propylene was polymerized in the same manner as in Example 1.
(2) Introduction of dicarboxylic acid anhydride into polypropylene
In Comparative Example 1, the obtained polymer was modified with maleic anhydride in the same manner as in Example 5 under the conditions shown in Table 3 (the physical properties of the obtained modified polypropylene are shown in Table 4). reference). In Comparative Example 2, the modified polypropylene produced in the same manner as in Comparative Example 1 was refluxed in a THF / water mixed system for 5 hours to open the maleic anhydride. The evaluation results of this modified polypropylene are shown in Table 5.
[0097]
(Comparative Examples 3 and 4)
(1) Polymerization of propylene
Except that the catalyst was changed, propylene was polymerized under the conditions shown in Table 1 by the same method as in Example 1 to obtain polymers shown in Table 2.
(2) Introduction of dicarboxylic acid into polypropylene
The obtained polymer was modified by the same method as in Example 5 under the conditions shown in Table 3 to obtain fumaric acid-modified polypropylene shown in Table 4. The evaluation results of this modified polypropylene are shown in Table 5.
[0098]
As is clear from Table 4, the dicarboxylic acid-modified polypropylene obtained in Examples 1 to 12 was based on a polypropylene whose racemic dyad fraction [r] was in the range of 0.12 to 0.88. Thus, it can be seen that this is a modified polypropylene having a weight average molecular weight (Mw) of 8,000 to 70,000 and a modification rate (introduction of dicarboxylic acid) per polypropylene molecule of 0.5 to 10 per chain. Further, as is apparent from Table 5, the dicarboxylic acid-modified polypropylene obtained in Examples 1 to 12 has good solubility in a solvent and does not increase in viscosity even when stored for a long period of time. Affinity is high.
[0099]
On the other hand, in Comparative Example 1, even when the soluble polypropylene described in Example 1 was used as the base polymer, it was modified with maleic anhydride, so that a significant increase in viscosity was observed during storage. Further, when the dicarboxylic anhydride portion of the maleic anhydride-modified polymer obtained in Comparative Example 1 was ring-opened with water, as shown in Comparative Example 2, the solubility of the polymer in toluene decreased and the viscosity increased remarkably. . Furthermore, when crystalline polypropylene was used as the base polymer as in Comparative Examples 3 and 4, the modification reaction was difficult to occur and the solubility in toluene was lowered.
[0100]
【The invention's effect】
The modified polypropylene of the present invention is a polymer in which a dicarboxylic acid is introduced into polypropylene, has a very good solution property with high solubility in an organic solvent, almost no increase in viscosity during storage, and affinity with polypropylene. High nature. Therefore, since painting, adhesion, and printing are facilitated, it is extremely useful as a primer, paint, pressure-sensitive adhesive, adhesive, ink, reactive polymer, or compatibilizer.

Claims (2)

It is a dicarboxylic acid-modified polypropylene modified by reacting a polypropylene having a racemic dyad fraction [r] measured by ¹³ C-NMR of 0.12 to 0.88 (excluding 0.50) with an unsaturated dicarboxylic acid. And
Polypropylene is a soluble polypropylene having a solubility in toluene at room temperature of 5 g or more, and an average of 0.5 or more dicarboxylic acids are bonded to one polypropylene molecule, and the weight average molecular weight (Mw) is 5,000 to 400,000. A dicarboxylic acid-modified polypropylene characterized in that A polypropylene having a racemic dyad fraction [r] measured by ¹³ C-NMR of 0.12 to 0.88 (excluding 0.50) is mixed with unsaturated dicarboxylic acid and 50 to 50 in the presence of a radical reaction initiator. method for producing a dicarboxylic acid-modified polypropylene according to claim 1, is reacted at 200 ° C. characterized by degeneration to isosamples.