Phenolate constrained geometry polymerization catalyst and method for preparing
Abstract
The subject invention involves a method of preparing and the constrained geometry catalyst thereby prepared of the general formula Ar{prime}R4(O)Ar{double_prime}R{prime}{sub 4}M(CH{sub 2}Ph){sub 2} where Ar{prime} is a phenyl or naphthyl group; Ar{double_prime} is a cyclopentadienyl or indenyl group, R and R{prime} are H or alkyl substituents (C{<=}10) and M is Ti, Zr or Hf. The synthetic method involves a simple alkane elimination approach which permits a ``one-pot`` procedure. The catalyst, when combined with a cocatalyst such as Pb{sub 3}C{sup +}B(Ar{sub 3}{sup F}){sub 4}BAr{sub 3}{sup F} or methyl alumoxane where Ar{sup F} is a fluoroaryl group, is an effective catalyst for the polymerization of {alpha}-olefins such as ethylene, propylene and styrene. 1 fig.
- Inventors:
- Issue Date:
- Research Org.:
- Northwestern Univ., Evanston, IL (United States)
- Sponsoring Org.:
- USDOE, Washington, DC (United States)
- OSTI Identifier:
- 321258
- Patent Number(s):
- 5856258
- Application Number:
- PAN: 8-950,912
- Assignee:
- Northwestern Univ., Evanston, IL (United States)
- DOE Contract Number:
- FG02-86ER13511
- Resource Type:
- Patent
- Resource Relation:
- Other Information: PBD: 5 Jan 1999
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 40 CHEMISTRY; CATALYSTS; CHEMICAL PREPARATION; TITANIUM COMPOUNDS; ZIRCONIUM COMPOUNDS; HAFNIUM COMPOUNDS; ORGANOMETALLIC COMPOUNDS; ALKENES; POLYMERIZATION
Citation Formats
Marks, T J, and Chen, Y X. Phenolate constrained geometry polymerization catalyst and method for preparing. United States: N. p., 1999.
Web.
Marks, T J, & Chen, Y X. Phenolate constrained geometry polymerization catalyst and method for preparing. United States.
Marks, T J, and Chen, Y X. Tue .
"Phenolate constrained geometry polymerization catalyst and method for preparing". United States.
@article{osti_321258,
title = {Phenolate constrained geometry polymerization catalyst and method for preparing},
author = {Marks, T J and Chen, Y X},
abstractNote = {The subject invention involves a method of preparing and the constrained geometry catalyst thereby prepared of the general formula Ar{prime}R4(O)Ar{double_prime}R{prime}{sub 4}M(CH{sub 2}Ph){sub 2} where Ar{prime} is a phenyl or naphthyl group; Ar{double_prime} is a cyclopentadienyl or indenyl group, R and R{prime} are H or alkyl substituents (C{<=}10) and M is Ti, Zr or Hf. The synthetic method involves a simple alkane elimination approach which permits a ``one-pot`` procedure. The catalyst, when combined with a cocatalyst such as Pb{sub 3}C{sup +}B(Ar{sub 3}{sup F}){sub 4}BAr{sub 3}{sup F} or methyl alumoxane where Ar{sup F} is a fluoroaryl group, is an effective catalyst for the polymerization of {alpha}-olefins such as ethylene, propylene and styrene. 1 fig.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}