JP2736935B2 - 金属錯体化合物 - Google Patents

金属錯体化合物

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Publication number
JP2736935B2
JP2736935B2 JP2242861A JP24286190A JP2736935B2 JP 2736935 B2 JP2736935 B2 JP 2736935B2 JP 2242861 A JP2242861 A JP 2242861A JP 24286190 A JP24286190 A JP 24286190A JP 2736935 B2 JP2736935 B2 JP 2736935B2
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Prior art keywords
compound according
alkyl
independently
carbon atoms
cyclopentadienyl
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JPH03139504A (ja
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シー ステーブンス ジエームス
アール ネイザマー デビツド
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Dow Chemical Co
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Dow Chemical Co
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    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F7/00Compounds containing elements of Groups 4 or 14 of the Periodic Table
    • C07F7/28Titanium compounds
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F10/00Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F17/00Metallocenes
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00Polymerisation catalysts
    • C08F4/42Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/619Component covered by group C08F4/60 containing a transition metal-carbon bond
    • C08F4/61908Component covered by group C08F4/60 containing a transition metal-carbon bond in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08FMACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F4/00Polymerisation catalysts
    • C08F4/42Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
    • C08F4/44Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
    • C08F4/60Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
    • C08F4/619Component covered by group C08F4/60 containing a transition metal-carbon bond
    • C08F4/6192Component covered by group C08F4/60 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S526/00Synthetic resins or natural rubbers -- part of the class 520 series
    • Y10S526/943Polymerization with metallocene catalysts

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerization Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は触媒として有用な金属錯体化合物に関する。
〔従来の技術〕
EP−A−0277004にはビス(シクロペンタジエニル)
金属錯体を非配位性の相溶性アニオンを含むブレンステ
ツド酸の塩と反応させることによつて製造した若干のビ
ス(シクロペンタジエニル)金属化合物が記載されてい
る。このEP特許はこのような錯体がオレフイン重合触媒
として有利に使用される事実を開示している。
〔発明が解決しようとする課題〕
上記の従来技術に記載されている触媒の有用性にもか
かわらず、付加重合用の更に効率で有用な触媒を製造す
ることが望ましい。本発明はこの課題を解決するもので
あり、重合触媒として高度に活性であり且つ広範囲の種
類のモノマーおよびモノマー混合物の重合を望ましく可
能にするある種の改良された金属錯体含有化合物を提供
するものである。
〔課題を解決するための手段〕
上記の課題を解決するための手段として、本発明によ
れば、次式 CpMXn+A- 〔式中、Mはチタンまたはジルコニウムであり;Cpは式 〔R′はそれぞれの場合独立に水素、ハロゲンまたは20
以下の炭素原子をもつアルキル、アリールもしくはハロ
アルキル、シリル基およびそれらの組合せからえらばれ
た基であり; R″はR′であるか又は式 〔Yは窒素またはリンであり;Rはそれぞれの場合独立
に10以下の炭素原子もしくはケイ素原子をもつアルキ
ル、アリール、シリルまたはそれらの組合せであり;mは
1〜4の整数である〕のYを介してMに共有結合してい
る2価の基である〕 で示されるシクロペンタジエニルもしくは置換シクロペ
ンタジエニル基であり; Xはそれぞれの場合独立にハロゲンまたは20以下の炭
素原子をもつアルキル、アリール、アリールオキシまた
はアルコキシであり; nは1または2であり;そして A-は〔BQ4 〔Bは原子価が3の状態のホウ素であり;そしてQはそ
れぞれの場合独立にハイドライド、ハロゲンまたは20個
以下の炭素原子をもつジアルキルアミド、アルコキサイ
ド、アリールオキサイド、ヒドロカルビルもしくは置換
ヒドロカルビル基であって但しQハライドは1個以下で
ある〕 である〕 に相当するモノシクロペンタジエニルまたは置換モノシ
クロペンタジエニル金属錯体含有化合物が今や提供され
る。
このような化合物は配位型重合法に使用して型成形,
フイルム,シート,押出し発泡およびその他の用途に使
用されるポリマーを製造するのに有用である。これらの
化合物はまた水素化反応、接触クラツキングおよびその
他の工業プロセスに使用することもできる。
本発明の化合物は次の(a)成分および(b)成分を
不活性非プロトン性溶媒中で混合し、そして所望ならば
生成物を回収することによつて製造することができる。
(a)第2成分(以下に述べる)のカチオンと結合する
少なくとも1種の置換分を含む、且つその原子価より1
つ少ない配位数を通常もつカチオンを形成しうる、チタ
ンまたはジルコニウムのモノ(シクロペンタジエニル)
誘導体である少なくとも1種の第1成分;および (b)ブロンステツド酸および非配位性の相溶性アニオ
ンから成る塩である少なくとも1種の第2成分。
上記の第1成分はCpMXn +のカチオンを形成しうるもの
であり、第2成分の非配位性の相溶性アニオンはA-に相
当するものである。
本発明の金属錯体化合物は前記一般式で示されるが、
特に好ましい金属錯体化合物は式 〔CpはMにη結合様式で結合した2価のシクロペン
タジェニルまたは置換シクロペンタジェニル基であり; Yは窒素またはリンであり;Rはそれぞれの場合独立
に10以下の炭素原子もしくはケイ素原子をもつアルキ
ル、アリール、シリルまたはそれらの組合せであり;mは
1〜4の整数である〕のYを介してMに共有結合してい
る2価の基であり、X,nおよびA-は前記のとおりであ
る〕に相当する化合物である。
本発明の化合物の製造に使用しうるモノシクロペンタ
ジエニル金属成分(第一成分)の好適な例は、ヒドロカ
ルビル置換モノシクロペンタジエニル金属化合物、たと
えばシクロペンタジエニルジルコニウムトリメチル,シ
クロペンタジエニルジルコニウムトリエチル,シクロペ
ンタジエニルジルコニウムトリプロピル,シクロペンタ
ジエニルチタントリメチル,シクロペンタジエニルチタ
ントリフエニル,など;ヒドロカルビル置換化合物たと
えばシクロペンタジエニルチタントリイソプロポキサイ
ド,シクロペンタジエニルジルコニウムトリフエノキサ
イドなど;ハロ置換化合物たとえばシクロペンタジエニ
ルジルコニウムトリクロライド,インデニルチタントリ
クロライド,など;および置換基の混合物を含む化合物
たとえばシクロペンタジエニルチタンイソプロポキサイ
ドジメチル,ペンタメチルシクロペンタジエニルジルコ
ニウムメチルジクロライド,(t−ブチルアミド)(テ
トラメチル−η−シクロペンタジエニル)−1,2−エ
ンタジイルジルコニウムジクロライド,(t−ブチルア
ミド)(テトラメチル−η−シクロペンタジエニル)
−1,2−エタンジイルチタンジクロライド,(メチルア
ミド)(テトラメチル−η−シクロペンタジエニル)
−1,2−エタンジイルジルコニウムジクロライド,(メ
チルアミド)(テトラメチル−η−シクロペンタジエ
ニル)−1,2−エタンジイルチタンジクロライド,(エ
チルアミド)(テトラメチル−η−シクロペンタジエ
ニル)・メチレンチタンジクロライド,(t−ブチルア
ミド)ジベンジル(テトラメチル−η−シクロペンタ
ジエニル)シランジルコニウムジベンジル,(ベンジル
アミド)ジメチル(テトラメチル−η−シクロペンタ
ジエニル)シランチタンジクロライド,(フエニルホス
フイド)ジメチル(テトラメチル−η−シクロペンタ
ジエニル)シランジルコニウムジベンジルなどである。
上記リストの最後の項にかかげた化合物類はシクロペ
ンタジエニル環の金属原子と置換分との間に共有結合を
含む化合物の例である。好ましい置換分は金属原子にδ
縮合しうる置換分である。このような化合物は対応する
金属クロライドを置換シクロペンタジエニル基(たとえ
ばシクロペンタジエニル・アルカンジイル,シクロペン
タジエニル・シランアミド,またはシクロペンタジエニ
ル・ホスフイド化合物)のジリチウム塩と混合すること
によつて容易に製造することができる。この反応は通常
の合成法を使用して不活性液体(たとえばテトラヒドロ
フラン,C5-10アルカン,トルエンなど)中で行なわれ
る。
本発明の化合物の製造に第2成分として有用な化合物
は次の一般式によつて表わすことができる。
〔L−H〕〔BQ4 ただしLは中性塩基であり;〔L−H〕はブロンス
テツド酸であり;Bは原子価3の状態のホウ素であり;そ
してQは前記定義のとおりである。
本発明の改良触媒の製造に第2成分として使用しうる
ホウ素化合物の例は次のとおりであるが、これらに限定
されない: トリアルキル置換アンモニウム塩たとえばトリエチル
アンモニウムテトラフエニルボレート,トリプロピルア
ンモニウムテトラフエニルボレート,トリ(n−ブチ
ル)アンモニウムテトラフエニルボレート,トリメチル
アンモニウムテトラ(p−トリルボレート),トリブチ
ルアンモニウムテトラキス−ペンタフルオロフエニルボ
レート,トリプロピルアンモニウムテトラキス−2,4−
ジメチルフエニルボレート,トリブチルアンモニウムテ
トラキス−3,5−ジメチルフエニルボレート,トリエチ
ルアンモニウムテトラキス−(3,5−ジ−トリフルオロ
メチルフエニル)ボレートなど。また、N,N−ジアルキ
ルアニリニウム塩たとえばN,N−ジエチルアニリニウム
テトラフエニルボレート,N,N−2,4,6−ペンタメチルア
ニリニウムテトラフエニルボレートなど;ジアルキルア
ンモニウム塩たとえばジ−(i−プロピル)アンモニウ
ムテトラキスペンタフルオロフエニルボレート,ジシク
ロヘキシルアンモニウムテトラフエニルボレートなど;
およびトリアリールホスホニウム塩たとえばトリフエニ
ルホスホニウムテトラフエニルボレート,トリ(メチル
フエニル)ホスホニウムテトラキス−ペンタフルオロフ
エニルボレート,トリ(ジメチルフエニル)ホスホニウ
ムテトラフエニルボレートなど;も好適である。
一般に、そして上記の第1成分の大部分が上記の第2
成分の大部分と組合せられて活性なオレフイン重合触媒
を生じるけれども、第1成分から始めに生成した金属カ
チオンまたはそれらの分解生成物が比較的安定な触媒で
あるということが連続重合操作にとつて重要である。ま
たアンモニウム塩を使用する場合、第2化合物のアニオ
ンが加水分解に対して安定であることも重要である。更
に、第2成分の酸性度が第1成分に対して十分であつ
て、必要なプロトン移動を促進させることも重要であ
る。逆に、金属錯体の塩基性度も必要なプロトン移動を
促進するに十分でなければならない。若干のメタローセ
ン(非金属性)化合物はブロンステツド酸以外のすべて
との反応に対して耐性があり、従つて第2成分のすべて
と本発明の触媒を形成する第1成分として好適ではな
い。最も好ましいモノシクロペンタジエニル金属化合物
は水溶液によつて加水分解しうる化合物である。
本発明の触媒を製造するための第1(金属含有)成分
と第2成分との組合せに関して、活性触媒の製造のため
に組合せられるこれら2成分はアニオン断片とくにアリ
ール基または弗素もしくは水素原子が金属カチオンに移
動して触媒的に不活性な種を形成するのを避けるように
えらばれるべきであることに注目すべきである。これ
は、シクロペンタジエニル炭素上の置換分ならびにアニ
オンの芳香族炭素環上の置換分から生ずる立体障害によ
つて行なうことができる。従つてパーヒドロカルビル置
換シクロペンタジエニル基を含む第1成分は非置換シク
ロペンタジエニル基を第1成分がなしうるよりも広い範
囲の第2成分と共に有効に使用することができる。然し
ながら、シクロペンタジエニル基上の置換分の量と大き
さが減少するにつれて、劣化に対してより耐性のあるア
ニオンを含む第2成分たとえばフエニル環のオルソ位に
置換分をもつものを用いてより有効な触媒がえられる。
アニオンを劣化に対してより耐性にする別の手段はアニ
オン中のフツ素置換基特に完全弗素置換基によつて与え
られる。弗素置換安定性アニオンは次いでより広い範囲
の第1成分と共に使用することができる。
一般に、触媒は約−100℃〜約300℃の範囲内の温度に
おいて好適な溶媒中で上記2成分を混合することによつ
て製造される。この触媒を使用して2〜約18個の炭素原
子をもつα−オレフインおよび/またはアセチレン性不
飽和モノマーおよび/または約4〜約18個の炭素原子を
もつジオレフインを単独でまたは組合せにおいて重合さ
せることができる。この触媒はまたα−オレフイン,ジ
オレフインおよび/またはアセチレン性不飽和モノマー
を他の不飽和モノマーと組合せて重合させるためにも使
用することができる。好ましい態様において、この触媒
はビニル芳香族モノマーとビニル芳香族モノマー以外の
オレフインとのコポリマーとくにスチレンとエチレンま
たはプロピレンとのコポリマーを製造するのに使用され
る。一般に、重合は当業技術において周知の条件におい
て行なうことができる。触媒成分を重合プロセスに直接
に添加し、そして好適な溶媒または希釈剤(凝縮モノマ
ーを包含する)を重合プロセス中に使用するならば、触
媒系はその場で生成することがもちろん理解されるであ
ろう。然しながら、触媒はこれを重合工程に加える前に
好適な溶媒中別の工程で製造するのが好ましい。触媒は
発火性の種を含んではならないけれども、触媒成分は水
分と酸素の双方に敏感であり、不活性雰囲気(たとえば
窒素,アルゴンまたはヘリウム)中で取扱い及び搬送す
べきである。
上記のように、本発明の改良触媒は好ましくは好適な
不活性非プロトン性溶媒もしくは希釈剤中で製造され
る。好適な溶媒または希釈剤としてオレフイン,ジオレ
フインおよびアセチレン性不飽和モノマーの重合におい
て溶媒として有用であることの知られている従来技術に
周知のすべての溶媒をあげることができる。然し好適な
溶媒として次のものをあげることができるが、必ずしも
これらに限定されない:直鎖または枝分かれ鎖の炭化水
素たとえばイソブタン,ブタン,ペンタン,ヘキサン,
ヘプタン,オクタンなど;環状および脂環状炭化水素た
とえばシクロヘキサン,シクロペンタン,メチルシクロ
ペンタン,メチルシクロヘプタンなど;ならびに芳香族
およびアルキル置換芳香族化合物たとえばベンゼン,ト
ルエン,キシレンなど。好適な溶媒はまた液状オレフイ
ン類をも包含する。これらはモノマーまたはコモノマー
としても働き、例としてエチレン,プロピレン,ブタジ
エン,シクロペンテン,1−ヘキセン,3−メチル−1−ペ
ンテン,4−メチル−1−ペンテン,1,4−ヘキサジエン,1
−オクテン,1−デセン,スチレンなどがあげられる。
特定の理論によつて拘束されることを欲しないけれど
も、本発明の改良触媒の製造に使用する2成分を好適な
溶媒または希釈剤中で混合するとき、第2成分(酸性部
分)のカチオンの一部または全部は第1成分の置換基
(X)の1つと結合する。その結果として、中性化合物
XHが放出され、この中性化合物は溶液中にとどまるか、
あるいはガスとして放出される。この点に関して、第1
成分中のXがハイドライドであるならば水素ガスが発生
することに注目すべきである。同様に、Xがメチル基で
あるならば、メタンがガスとして発生する。Xがアルコ
キサイドであるならば、アルコールが生成する。
特定の理論に拘束されることを欲しないけれども、第
1成分の置換基が放出されるとき、触媒製造に使用する
第2成分中に始めから含まれている非配位性のアニオン
は第1成分から生成する金属カチオンまたはその分解生
成物の電荷を均衡させる。この金属カチオンおよび非配
位性アニオンは、触媒が1種またはそれ以上のオレフイ
ン,ジオレフインおよび/またはアセチレン性不飽和モ
ノマーの単独と或いは1種またはそれ以上の他のモノマ
ーまたは別の中性ルイス塩基と接触せしめられるまで、
結合されたまゝでいる。上記の如く、第2成分中に含ま
れるアニオンはモノマーによる迅速な置換を可能にして
重合を促進するに十分に可動性でなければならない。
本発明の触媒を製造する際に起る化学反応は、好まし
いホウ素含有化合物を第2成分として使用するとき、下
記に示す一般式を参照することによつて表わすことがで
きる。
CpMXn+1+〔L−H〕〔BQ4 →〔CpMXn〔BQ4+X−H+L 〔式中のCp,M,X,nおよびQは前記の意味をもつ。〕 一般に、上記反応式中の生成物特に金属カチオンの安
定性および生成速度は、溶媒の選択,えらばれた〔L−
H〕の酸性度,特定のL,アニオン,反応完了時の温
度,およびえらばれた金属の特定のモノシクロペンタジ
エニル誘導体に応じて変化する。一般に、始めに生成す
るイオン対は活性重合触媒であり、α−オレフイン,ジ
オレフインおよびアセチレン性不飽和モノマーのいづれ
か単独または他のモノマーとの組合せを重合させる。然
しながら、ある場合には、始めの金属カチオンは分解し
て活性重合触媒を生じる。
上述の如く、上記のほとんどの第1成分は上記の第2
成分と混合して活性触媒とくに活性重合触媒を生成す
る。然しながら、実際の活性触媒種はその分離と爾後の
確認を可能にするように十分に安定であるとは必ずしも
限らない。その上、および生成する初期金属カチオンの
多くは比較的安定であるけれども、初期に生成する金属
カチオンは多くの場合分解して1種またはそれ以上の他
の触媒的に活性な種になる。
一般に、本発明による触媒はアルミニウムまたはマグ
ネシウム基材の化合物のような共触媒を含むチグラ−・
ナツタ触媒により生成するポリマー中に一般に見出され
る痕跡量の金属を含まないポリマー生成物を生成するよ
うにえらばれる。本発明の触媒により生成するポリマー
は、金属アルキル(たとえばアルミニウムアルキル)ま
たはアルミノキサンを含むより通常のチグラ−・ナツタ
型触媒により生成するポリマーよりも広い範囲の用途を
もつ。この触媒は均一触媒として又は好適な担体(たと
えばアルミナまたはシリカ)に担持させた触媒として使
用することができる。
本発明の最も好ましい態様において、Cpはペンタメチ
ルシクロペンタジエンであり、Mはチタンまたはジルコ
ニウムであり、nは2であり、XはC1 アルキルまた
はアルコキサイドであり、Aはテトラキス・ペンタフル
オロフエニルボレートである。
更に好ましい態様において、触媒は1種またはそれ以
上のC2〜C8α−オレフイン特にエチレンまたはプロピレ
ン、最も好ましくはエチレンを0℃〜200℃好ましくは2
5℃〜100℃の範囲の温度において、大気圧〜1000psig
(7MPa)好ましくは15〜500psig(0.1〜3.5MPa)の範囲
の圧力で重合させるのに使用される。本発明の最も好ま
しい態様において、触媒はエチレンを均一重合させるた
めに又はエチレンとC3〜C8α−オレフイン(スチレンを
包含する)と共重合させてコポリマーを作るために使用
される。この好ましい態様および最も好ましい態様の双
方において、モノマーは約1〜約60分の範囲の通常の保
持時間のあいだ重合条件に保持され、触媒はモノマー1
モル当り約10-7−約10-1モルの範囲の濃度で使用され
る。
〔実施例〕
以上のとおり本発明を広く述べてきたが、本発明は下
記の実施例を参照することによつて更になお明らかにな
るであろう。然しながら、これらの実施例は本発明を具
体的に説明するためにのみ提示するものであつて、本発
明を限定するものと解すべきではない。
実施例1 ペンタメチルシクロペンタジエニルチタンイソプロポキ
サイドジメチルおよびトリエチルアンモニウムテトラキ
ス・ペンタフルオロフエニルボレート 室温の乾燥ボツクスにおいて、33mgのペンタメチルシ
クロペンタジエニルチタンイソプロポキサイドジメチル
〔CpTi(O−i−Pr)Me2〕(0.12ミリモル)を1mlのベ
ンゼンと混合し、生成溶液をピペツトで250mlの3ツ口
フラスコに入れた。栓,真空ライン用のアダプタ,およ
び固体添加ロートを取付けた。添加ロートに80mg(0.10
ミリモル)のトリエチルアンモニウムテトラキス・ペン
タフルオロフエニルボレート(〔HNEt3〔B(C
6F5)を充てんした。添加ロートに栓をして装
置を真空ラインに取付けた。ベンゼンを真空下にフラス
コから除き、75mlの新しいベンゼンを真空下−78℃のフ
ラスコに留出させた。室温に加温後、溶液を1気圧(0.
1MPa)のエチレンで覆つた。固体の(〔HNEt3〔B
(C6F5)を室温で加え、溶液が黄色に変つたこ
とを観察した。20分後に溶液は黒色であり、ポリエチレ
ンの沈殿が観察された。1時間後に、ポリマーをメタノ
ールで沈殿させ、収集し、メタノールで洗浄し、真空下
で一夜乾燥し、0.49gのポリマーを得た。
実施例2 ペンタメチルシクロペンタジエニルチタントリメチルお
よびトリエチルアンモニウムテトラキス・ペンタフルオ
ロフエニルボレート ペンタメチルシクロペンタジエニルチタントリメチル
およびトリエチルアンモニウム・ペンタフルオロフエニ
ルボレートを使用して実施例1の反応条件を実質的にく
りかえした。反応はトルエン中で約10時間室温において
続けた。メタンガスおよびアンモニアの副生物が観察さ
れた。約45℃に1時間加熱後、溶媒を真空下で除去し黒
色固体をえた。この固体を石油エーテルで3回洗浄し、
減圧下に乾燥した。回収した生成物は所望のペンタメチ
ルシクロペンタジエニル・チタンジメチルテトラキス・
ペンタフルオロフエニルボレートであると確信された。
このものは周知のチグラー・ナツタ重合条件下でオレフ
インを重合させるのに使用することができる。
実施例3 (t−ブチルアミド)ジメチル(テトラメチル−η
シクロペンタジエニル)シランチタンジメチルおよびト
リエチルアンモニウムテトラキス・ペンタフルオロフエ
ニルボレート 25mlフラスコに275mgの(t−ブチルアミド)(ジメ
チル)(η−テトラメチルシクロペンタジエニル)シ
ランチタンジクロライド(0.75ミリモル)を充てんし、
これに小さいフリツトガラスを取付けた。このフリツト
を真空にし、15mlのジエチルエーテルをフラスコに真空
で移した。−78℃において、1.1mlのMeLi(ヘキサン中
1.4M,1.54ミリモル,2.05当量)を注射器を使用してサイ
ドアーム・バルブから添加した。調整変化は観察されな
かつた。5分後に内容物を取出し、溶液を室温に加温し
た。1時間後、この溶液は暗緑色で不透明であつた。ジ
エチルエーテルを追出して10mlのヘキサンで置換した。
この溶液を25℃で10分間撹拌してから過した。固体を
約2mlにまで減少させ、溶液を−78℃に冷却し、フリツ
ト冷却フリツプから暗オリーブ色の固体を集めた。減圧
下に30分間乾燥した後に、固体の(t−ブチルアミド)
ジメチル(テトラメチル−η−シクロペンタジエニ
ル)シランチタンジメチルを単離した(138mg,56%)。
重合 100mgの3つ口フラスコに32mg(98μモル)の(t−
ブチルアミド)ジメチル(テトラメチル−η−シクロ
ペンタジエニル)シランチタンジメチルを充てんした。
このフラスコに栓,真空ラインアダプターおよび固体添
加ロートを取付けた。この添加ロートに77mgの〔HNE
t3〔B(C6H5を充てんし、栓をした。この
フラスコを真空にし、50mlのベンゼンを固体上に留出さ
せた。この溶液を25℃に加温し、1気圧(0.1MPa)のエ
チレンで覆つた。次いで固体〔HNEt3〔B(C6F5
を加え、黄色溶液を得た。1時間後、粘稠黄色溶
液は依然としてエチレンを吸収しつつあつた。生成する
ゼラチン状混合物をメタノールで急冷して白色沈殿をえ
た。この沈殿を過し、メタノールで2回洗浄し、真空
乾燥して0.56gのポリエチレンを得た。
実施例4−12 2Lのステンレス鋼撹はん反応器に1Lの混合C6-8アルカ
ン溶媒を、次いで表Iに同定される適量のコモノマーを
満たした。反応器を適温に加熱し、次いでエチレンで加
圧した。水素を用いた場合は次いで75mlの供給容器から
反応器へ膨張させた。数分後、トルエン溶液中の触媒と
共触媒の混合物を転移配管を通して反応器に加え、次い
で5mlのトルエンで転移配管を洗った。反応器を開けて
メタノールと抗酸化剤を加えて反応を停止した。ポリマ
ーを減圧下に一定重量まで乾燥した。結果を表Iに示
す。用いたのは次の触媒と共触媒である。
触媒 I.(タートブチルアミド)ジメチル(テトラメチル−η
−シクロペンタジエニル)シランチタンジメチル II.(タートブチルアミド)ジメチル(テトラメチル−
η−シクロペンタジエニル)シランジルコニウムメチ
ル 共触媒 A.ジメチルアニリニウム テトラキスパーフルオロフェ
ニルボレート B.トリエチルアンモニウム テトラキスパーフルオロフ
ェニルボレート C.トリエチルアンモニウム メチルトリスパーフルオロ
フェニルボレート D.トリエチルアンモニウム アリルトリスパーフルオロ
フェニルボレート E.トリエチルアンモニウム n−ブチルトリスパーフル
オロフェニルボレート F.トリエチルアンモニウム ベンジルトリスパーフルオ
ロフェニルボレート 結果は表Iに含まれる。
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭62−187708(JP,A) 特開 平1−185302(JP,A) 特開 平3−188092(JP,A) 特開 平2−110106(JP,A)

Claims (11)

    (57)【特許請求の範囲】
  1. 【請求項1】次式 CpMXn+A- 〔式中、Mはチタンまたはジルコニウムであり;Cpは式 〔R′はそれぞれの場合独立に水素、ハロゲンまたは20
    以下の炭素原子をもつアルキル、アリールもしくはハロ
    アルキル、シリル基およびそれらの組合せからえらばれ
    た基であり; R″はR′であるか又は式 〔Yは窒素またはリンであり;Rはそれぞれの場合独立
    に10以下の炭素原子もしくはケイ素原子をもつアルキ
    ル、アリール、シリルまたはそれらの組合せであり;mは
    1〜4の整数である〕のYを介してMに共有結合してい
    る2価の基である〕 で示されるシクロペンタジエニルもしくは置換シクロペ
    ンタジエニル基であり; Xはそれぞれの場合独立にハロゲンまたは20以下の炭素
    原子をもつアルキル、アリール、アリールオキシまたは
    アルコキシであり; nは1または2であり;そして A-は〔BQ4 〔Bは原子価が3の状態のホウ素であり;そしてQはそ
    れぞれの場合独立にハイドライド、ハロゲンまたは20個
    以下の炭素原子をもつジアルキルアミド、アルコキサイ
    ド、アリールオキサイド、ヒドロカルビルもしくは置換
    ヒドロカルビル基であって但しQハライドは1個以下で
    ある〕 である〕 に相当するモノシクロペンタジエニルまたは置換モノシ
    クロペンタジエニル金属錯体含有化合物。
  2. 【請求項2】R″が式 〔Yは窒素またはリンであり;Rはそれぞれの場合独立
    に10以下の炭素原子もしくはケイ素原子をもつアルキ
    ル、アリール、シリルまたはそれらの組合せであり;mは
    1〜4の整数である〕のYを介してMに共有結合してい
    る2価の基であり;nが1である請求項1記載の化合物。
  3. 【請求項3】R″がR′であり、nが2である請求項1
    記載の化合物。
  4. 【請求項4】R′の炭素原子が10以下である請求項1〜
    3のいずれか1項記載の化合物。
  5. 【請求項5】R′がメチルである請求項1〜4のいずれ
    か1項記載の化合物。
  6. 【請求項6】Mがチタンである請求項1〜5のいずれか
    1項記載の化合物。
  7. 【請求項7】Cpがペンタメチルシクロペンタジェニルで
    あり、Xが炭素原子1〜4のアルキルまたはアルコキシ
    である請求項3記載の化合物。
  8. 【請求項8】A-がフルオロ置換アニオンである請求項1
    〜7のいずれか1項記載の化合物。
  9. 【請求項9】A-がパーフルオロ置換アニオンである請求
    項8記載の化合物。
  10. 【請求項10】A-がテトラキス(ペンタフルオロフェニ
    ル)ボレートである請求項9記載の化合物。
  11. 【請求項11】(タートブチルアミド)ジメチル(テト
    ラメチル−η−シクロペンタジェニル)シランチタン
    メチルテトラキス(ペンタフルオロフェニル)ボレート
    である請求項1記載の化合物。
JP2242861A 1989-09-14 1990-09-14 金属錯体化合物 Expired - Lifetime JP2736935B2 (ja)

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US547728 1990-07-03

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IL95598A (en) 1998-08-16
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CN1028369C (zh) 1995-05-10
NO903986L (no) 1991-03-15
KR910006307A (ko) 1991-04-29
AU632620B2 (en) 1993-01-07
NO302702B1 (no) 1998-04-14
DE69031413T2 (de) 1998-03-05
AU6247390A (en) 1991-03-21
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HUT55039A (en) 1991-04-29
YU172890A (sh) 1992-12-21
HU905892D0 (en) 1991-03-28
EP0765882A2 (en) 1997-04-02
HU218602B (hu) 2000-10-28
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US5132380A (en) 1992-07-21
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ES2106021T5 (es) 2004-03-16
BR9004695A (pt) 1991-09-10
ES2106021T3 (es) 1997-11-01
EP0418044B2 (en) 2003-08-20
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CA2025332A1 (en) 1991-03-15
US5064802A (en) 1991-11-12
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IL95598A0 (en) 1991-06-30
CN1050194A (zh) 1991-03-27
YU47114B (sh) 1994-12-28
JP3010349B2 (ja) 2000-02-21
DE69031413T3 (de) 2004-05-27
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FI100104B (fi) 1997-09-30
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RO106411B1 (ro) 1993-04-30
HK1001919A1 (en) 1998-07-17

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