[특허]Stereorigid bis-fluorenyl metallocenes

[미국특허] Stereorigid bis-fluorenyl metallocenes 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C08F-004/42
출원번호	US-0386261 (1999-08-31)
발명자 / 주소	Reddy Baireddy R.
출원인 / 주소	Fina Technology, Inc.
대리인 / 주소	Jackson
인용정보	피인용 횟수 : 16 인용 특허 : 6

초록 ▼

wherein, Fl and Fl' are fluorenyl groups which are interconnected by a structural bridge X to impart stereorigidity to the metallocene ligand, Me is a Group 3, 4, or 5 transition metal each Y is the same or different and is a hydrocarbyl or heterohydrocarbyl substittient at a distal position on the fluorenyl group, each Z is the same or different and is a hydrocarbyl or heterohydrocarbyl substituent at a distal position on the other fluorenyl group Fl', and a and b are each independently 1 or 2. The relative locations of Y and Z on their respective fluorenyl groups are such that each is in a staggered position relative to a plane of symmetry through the ligand structure which contains the structural bridge. The substituent groups Y and Z are on opposed sides of this plane of symmetry to provide a staggered conformation to the ligand. One of the substituents Y and Z may take a form of a heterohydrocarbyl group with the other a hydrocarbyl group. Z may be a hydrocarbyl group and Y a heterohydrocarbyl group, specifically an alkyl and alkoxy group such as an oxymethyl group, or an amino group such as a dimethylamino group. Y and Z may be the same.

대표청구항 ▼

[ What is claimed:] [1.]1. In a method for the polymerization of an ethylenically unsaturated monomer to produce an isotactic polymer of said monomer, comprising the steps of:a. providing a metallocene catalyst characterized by the formula:wherein:Fl and Fl' are fluorenyl groups of a metallocene ligand;X is a structural bridge imparting stereorigidity by interconnecting the fluorenyl groups;Y is a hydrocarbyl or heterohydrocarbyl substituent at a distal position on the fluorenyl group Fl;Z is a hydrocarbyl or heterohydrocarbyl substituent at a distal position on the fluorenyl group Fl' at a location transverse of the plane of bilateral symmetry from the group Y to provide a staggered conformation to said ligand in which each substituent on the group Fl is on one side of the plane of bilateral symmetry and each substituent of the group Fl' is on the other side of the plane of bilateral symmetry;a and b are each independently 1 or 2;Me is a Group 3, Group 4, or Group 5 metal from the Periodic Table of Elements;each Q is a hydrocarbyl radical having from 1 to 20 carbon atoms or is a halogen;P is a stable, non-coordinating or weakly-coordinating anion;k is an integer having a value of from 1 to 3 and 1 is an integer having a value of from 0 to 2; andb. contacting said catalyst in a polymerization reaction zone in the presence of an organoaluminum co-catalyst with an ethylenically unsaturated monomer which contains three or more carbon atoms or is a substituted vinyl compound under polymerization conditions to produce isospecific polymerization of said monomer.

이 특허에 인용된 특허 (6) 인용/피인용 타임라인 분석

Ewen, John A., Catalyst for producing hemiisotactic polypropylene.
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Ewen John A. (1823 Barleton Way Houston TX 77058), Doubly-conformationally locked, stereorigid catalysts for the preparation of tactiospecific polymers.
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Palackal Syriac J. (Bartlesville OK) Alt Helmut G. (Bayreuth DEX) Patsidis Konstantinos (Bayreuth OH DEX) Hill Tara G. (Fairfield OH) Hawley Gil R. (Dewey OK) Chu Peter P. (Bartlesville OK) Welch M. , Olefin polymerization using silyl-bridged metallocenes.
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Zenk Roland (Bayreuth DEX) Alt Helmut G. (Bayreuth OK DEX) Welch M. Bruce (Bartlesville OK), Organometallic fluorenyl compounds, preparation, and use.
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Elder Michael J. (Friendswood TX) Razavi Abbas (Colfontaine TX BEX) Ewen John A. (Houston TX), Process and catalyst for producing syndiotactic polyolefins.
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Razavi Abbas (Seabrook TX) Ewen John A. (Houston TX), Process for producing syndiotactic polyolefins.
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이 특허를 인용한 특허 (16) 인용/피인용 타임라인 분석

Razavi,Abbas; Marin,Vladimir; Lopez,Margarito, Catalyst components, process for their preparation and their use as catalyst components in polymerization of olefins.
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Follmann, Markus; Wehner, Volkmar; Meneyrol, Jerome; Altenburger, Jean-Michel; Petit, Frédéric; Lassalle, Gilbert; Herault, Jean-Pascal, Chlorothiophene-amides as inhibitors of coagulation factors Xa and thrombin.
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Follmann, Markus; Wehner, Volkmar; Altenburger, Jean-Michel; Lassalle, Gilbert; Herault, Jean-Pascal, Chlorothiophene-isoxazoles as inhibitors of coagulation factors Xa and thrombin.
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Bentley, Michael D.; Culbertson, Sean M.; McManus, Samuel P., Composition comprising a polymeric reagent.
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Bentley, Michael D.; Culbertson, Sean M.; McManus, Samuel P., Composition comprising a polymeric reagent.
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Bentley, Michael D.; Culbertson, Sean; McManus, Samuel P., Conjugates having a degradable linkage and polymeric reagents useful in preparing such conjugates.
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Li, Frank, Injection molding process.
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Bentley, Michael D.; Culbertson, Sean M.; McManus, Samuel P., Methods for preparing conjugates.
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Bentley, Michael D.; Culbertson, Sean M.; McManus, Samuel P., Methods for preparing polymeric reagents.
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Bentley, Michael D.; Culbertson, Sean M.; McManus, Samuel P., Methods for preparing polymeric reagents.
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Bentley, Michael D.; Culbertson, Sean M.; McManus, Samuel P., Methods for preparing polymeric reagents.
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Bentley, Michael D.; Culbertson, Sean M.; McManus, Samuel P., Pharmaceutical compositions and methods for delivering such compositions.
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Marin,Vladimir; Razavi,Abbas, Preparation and use of tetrasubstituted fluorenyl catalysts for polymerization of olefins.
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Patkar, Mahesh; Musgrave, Michael, Transforming process.
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Dubois, Laurent; Evanno, Yannick; Malanda, Andre, Tricyclic N-heteroaryl-carboxamide derivatives, preparation and therapeutic use thereof.
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Dubois, Laurent; Evanno, Yannick; Malanda, Andre, Tricyclic N-heteroaryl-carboxamide derivatives, preparation and therapeutic use thereof.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Stereorigid bis-fluorenyl metallocenes 원문보기