[특허]Process for producing stereospecific polymers

[미국특허] Process for producing stereospecific polymers 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	C08F-004/64 C08F-004/68 C08F-004/69
출원번호	US-0725702 (1991-07-03)
발명자 / 주소	Razavi Abbas (Patourage BEX)
출원인 / 주소	Fina Technology, Inc. (Dallas TX 02)
인용정보	피인용 횟수 : 28 인용 특허 : 0

초록 ▼

Process for the preparation of bridged metallocene catalysts. A substituted or unsubstituted cyclopentadiene is deprotonated in a polar solvent to form a solution of the corresponding anion species. The solution is then cooled to a temperature within the range of about -10°to -30°C. A minor amount of a solution of substituted fulvene in a polar solvent is added to a major quantity of the solution of anionic substituted or unsubstituted cyclopentadiene. The substituted fulvene is present in the solvent to provide a concentration of less than 2 molal. The substituted fulvene is disubstituted on the terminal (6) carbon atom and may be substituted or unsubstituted on the cyclopentadienyl ring. The resulting mixture is warmed to a temperature within the range of about 0°to 25°C. (room temperature) to produce a bridged cyclopentadienyl ligand. The bridged ligand is then recovered and contacted with a transition metal halide or hydrocarbon compound under reaction conditions sufficient to complex the bridged ligand to produce a bridged metallocene. In the preparation of syndiospecific metallocene catalysts one cyclopentadienyl group is a substituted or unsubstituted cyclopentadienyl ring and the other is a substituted cyclopentadienyl group sterically different from the first ring structure. Here, the cyclopentadienyl compound subjected to the protonation reaction can be a substituted or unsubstituted fluorenyl or indenyl group which is deprotonated and reacted with a 6, 6-dialkyl fulvene.

대표청구항 ▼

In a process for the preparation of a bridged metallocene catalyst, the steps comprising (a) subjecting a hydrocarbyl substituted or unsubstituted cyclopentadiene to deprotonation in a polar solvent to produce a solution of an anionic form of said substituted or unsubstituted cyclopentadiene in said polar solvent; (b) cooling the solution of said anionic substituted or unsubstituted cyclopentadiene resulting from step (a) to a temperature no lower than -30°C.; (c) providing a solution of a substituted fulvene in a polar solvent in a concentration of less than 2 molar, said substituted fulvene being disubstituted on the terminal carbon atom and being substituted or unsubstituted on the cyclopentadienyl ring; (d) adding minor quantities of the solution of step (c) to major quantities of the mixture of step (b) and increasing the temperature of the resulting mixture to a temperature within the range of 0°to 25°C. to produce a bridged dicyclopentadienyl ligand; (e) recovering the bridged ligand from step (d); and (f) contacting said bridged ligand with a metal compound of the formula MeQk under reaction conditions sufficient to complex the bridged ligand with the metal compound to produce a bridged metallocene, wherein Me is a Group 4b, 5b, or 6b metal from the Periodic Table of Elements, and each Q is a halogen or a hydrocarbyl radical having 1-20 carbon atoms and 3≤k≤6.

이 특허를 인용한 특허 (28) 인용/피인용 타임라인 분석

Wenzel Timothy Todd, Catalyst composition for the polymerization of olefins.
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Wenzel Timothy Todd, Catalyst composition for the polymerization of olefins.
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Blackmon,Kenneth P.; Thorman,Joseph L., Catalyst deactivation agents and methods for use of same.
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Razavi, Abbas; Lopez, Margarito; Baekelmans, Didier; Marin, Vladimir, Catalyst structure for olefin polymerization.
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Li, Fengkui; Coffy, Tim J.; Daumerie, Michel, Compatibilized polypropylene and polylactic acid blends and methods of making and using same.
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Nakano, Hidetake; Noda, Kiminori; Yasuda, Kazuaki, Crosslinked product, method for producing the same and the use thereof, and ethylene copolymer.
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Harada, Katsuyoshi; Endo, Koji; Mizukawa, Tomoaki; Matsuura, Sadahiko, Ethylene/α-olefin copolymers and lubricating oils.
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Robert G. Peet, Films with improved metallizable surfaces.
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Li, Frank, Injection molding process.
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Abe, Shota; Kaneshige, Ryousuke, Lubricant compositions.
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Cretekos, George F.; Amon, Moris, Metallized, metallocene-catalyzed, polypropylene films.
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Eisch John J. ; Qian Yun ; Weber Jurgen ; Zandona Nicola,BEX ; Siberdt Fabian,BEX, Metallocenes and process for the preparation of metallocenes.
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Eisch John J. ; Qian Yun ; Weber Jurgen ; Zandona Nicola,BEX ; Siberdt Fabian,BEX, Metallocenes and process for the preparation of metallocenes.
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Peet Robert G., Multi-layer films with core layer of metallocene-catalyzed polypropylene.
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Nairn, Lea Ann; Vargas, Marco Vinicio Araya, Multilayer polypropylene films and methods of making and using same.
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Yanagimoto, Yasushi; Matsugi, Tomoaki; Iwashita, Akihiko; Nakamura, Tatsuya; Saito, Junji, Olefin resin and method for producing same.
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Helmut G. Alt DE; Syriac J. Palackal ; Konstantinos Patsidis DE; M. Bruce Welch ; Rolf L. Geerts ; Eric T. Hsieh ; Max P. McDaniel ; Gil R. Hawley ; Paul D. Smith, Organometallic fluorenyl compounds, preparation, and use.
상세보기
Helmut G. Alt DE; Syriac J. Palackal ; Konstantinos Patsidis DE; M. Bruce Welch ; Rolf L. Geerts ; Eric T. Hsieh ; Max P. McDaniel ; Gil R. Hawley ; Paul D. Smith, Organometallic fluorenyl compounds, preparation, and use.
상세보기
Alt,Helmut G.; Palackal,Syriac J.; Patsidis,Konstantinos; Welch,M. Bruce; Geerts,Rolf L.; Hsieh,Eric T.; McDaniel,Max P.; Hawley,Gil R.; Smith,Paul D., Organometallic fluorenyl compounds, preparations, and use.
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Li, Fengkui; Coffy, Tim J.; Daumerie, Michel, Polymeric blends and methods of using same.
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Li, Fengkui; Coffy, Tim J.; Daumerie, Michel, Polymeric compositions comprising polylactic acid and methods of making and using same.
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Timothy Todd Wenzel, Polymerization of olefins with spirocyclic-metal complexes.
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Kuber Frank,DEX ; Riedel Michael,DEX ; Schiemenz Berthold,DEX, Process for preparing a methylene-bridged biscyclopentadienyl compound.
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Endo, Koji; Hiwara, Mayumi; Matsuura, Sadahiko; Kosugi, Yoko; Yamamura, Yuichi; Mizobuchi, Yusuke, Process for producing ethylene/α-olefin copolymer.
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Ebisawa, Ikuko; Yamashita, Masahiro; Yukita, Takashi; Mohri, Junichi; Tanaka, Junpei; Kai, Noriko, Production method of olefin (co)polymer containing constituent unit derived from 1-butene.
상세보기
Itakura, Keita; Odawara, Akiko; Kinouchi, Satoru; Takashima, Tateo; Tsunori, Ryoichi; Matsugi, Tomoaki; Yanagimoto, Yasushi; Nakamura, Tatsuya, Propylene-based resin composition.
상세보기
Rosen Robert K. (Sugar Land TX) Kolthammer Brian W.S. (Lake Jackson TX), Synthesis of cyclopentadienyl metal coordination complexes from metal hydrocarbyloxides.
상세보기
Suzuki, Yasuhiko; Kinoshita, Shinsuke; Shibahara, Atsushi; Yoshimura, Naritoshi; Hara, Isao; Hamada, Tetsuya; Kawamura, Kazumori; Tsurugi, Kou; Saito, Yasunori; Ishii, Seiichi; Nakayama, Yasushi; Matsukawa, Naoto; Murata, Susumu, Transition metal complex compounds, olefin oligomerization catalysts including the compounds, and processes for producing olefin oligomers using the catalysts.
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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] Process for producing stereospecific polymers 원문보기