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Polymerization catalyst systems comprising substituted hafnocenes 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • C08F-004/64
  • C08F-004/76
출원번호 US-0207213 (1998-12-08)
발명자 / 주소
  • Loveday Donald R.
  • Jejelowo Moses Olukayode
  • Kao Sun-Chueh
출원인 / 주소
  • Univation Technologies
대리인 / 주소
    Sher
인용정보 피인용 횟수 : 77  인용 특허 : 6

초록 ▼

The present invention relates to a process for the polymerization of monomers utilizing a bulky ligand hafnium transition metal metallocene-type catalyst compound, to the catalyst compound itself and to the catalyst compound in combination with an activator. The invention is also directed to an ethy

대표청구항 ▼

[ What is claimed is:] [1.]1. A process for polymerizing olefin(s) in the presence of a catalyst system comprising a mixture of two or more hafnium transition metal metallocene catalyst compounds, wherein each hafnocene has at least one ligand substituted with at least one linear or iso alkyl group

이 특허에 인용된 특허 (6)

  1. Jejelowo Moses O. (Kingwood TX) Bamberger Robert L. (Crosby TX), Catalyst and method of broadening polymer molecular weight distribution and increasing polymer tensile impact strength a.
    상세보기
  2. Harrington Bruce A. (Houston TX), Copolymerization process for the preparation of crystalline copolymers of olefins and cyclic olefins.
    상세보기
  3. Schmid Michael (Bayreuth DEX) Alt Helmut G. (Bayreuth DEX) Welch M. Bruce (Bartlesville OK), High activity ethylene selective metallocenes.
    상세보기
  4. Tsutsui Toshiyuki,JPX ; Yoshitsugu Ken,JPX ; Toyota Akinori,JPX, Olefin polymerization catalyst.
    상세보기
  5. Doyle Michael J. (Amsterdam NLX) Terlouw Willem (Amsterdam NLX), Polymerization process.
    상세보기
  6. Welborn ; Jr. Howard C. (Houston TX) Ewen John A. (Houston TX), Process and catalyst for polyolefin density and molecular weight control.
    상세보기

이 특허를 인용한 특허 (77)

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