Title:
担持メタロセン触媒
Document Type and Number:
Japanese Patent JP2007524721
Kind Code:
A
Abstract:
Supported metallocene catalysts and processes for the use of such catalysts in isotactic polymerization of a C3+ ethylenically unsaturated monomer. The supported catalysts comprise a particulate silica support, an alkyl alumoxane component, and a metallocene catalyst component. The support has an average particle size of 10-50 microns, a surface area of 200-800 m<2>/g and a pore volume of 0.9-2.1 milliliters per gram (ml/g). Alumoxane is incorporated onto the support to provide a weight ratio of alumoxane to silica of at least 0.8:1. The metallocene is present in an amount of at least 1 weight percent of the silica and the alumoxane and is of the formula B(CpRaRb)(Fl')MQ2 in which Fl' is an unsubstituted fluorenyl group or a fluorenyl group symmetrically substituted at the 3 and 6 positions, B is a structural bridge between Cp and Fl', Ra is a bulky substituent in a distal position, Rb is a less bulky substituent proximal to the bridge and non-vicinal to the distal substituent, M is a Group IVB transition metal or vanadium, and Q is a halogen or a Cl-C4 alkyl group.
Inventors:
Go-Tayer, William Jei
Car, margaret
Taian, Jiang
Low shear, David
Patrick, Constance Haworth
Henry, Sheyday
Car, margaret
Taian, Jiang
Low shear, David
Patrick, Constance Haworth
Henry, Sheyday
Application Number:
JP2006509787A
Publication Date:
August 30, 2007
Filing Date:
April 07, 2004
Export Citation:
Assignee:
FINA TECHNOLOGY, INCORPORATED
International Classes:
C08F4/6392; B01J31/00; B01J37/00; C07F9/00; C07F11/00; C07F17/00; C08F4/02; C08F4/42; C08F4/44; C08F4/60; C08F10/00; C08F110/02; C08F4/659; C08F4/6592; C08F110/06
Attorney, Agent or Firm:
Heikichi Odashima