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Title:
POLYMETHYLALUMINOXANE PRODUCT, PROCESS FOR PRODUCING THE SAME, POLYMERIZATION CATALYST, AND METHOD OF POLYMERIZING OLEFIN
Document Type and Number:
WIPO Patent Application WO/2005/090363
Kind Code:
A1
Abstract:
A polymethylaluminoxane product having excellent storage stability is provided in a satisfactory yield. The polymethylaluminoxane product is produced by the pyrolysis of an alkylaluminum compound which has an aluminum-oxygen-carbon bond and is formed by the reaction of trimethylaluminum with an oxygenic organic compound, and is characterized in that (i) the oxygenic organic compound to be reacted with trimethylaluminum is an aliphatic or aromatic carboxylic acid represented by the general formula (I): R1-(COOH)n (I) (wherein R1 represents a hydrocarbon group which is C1-20 linear or branched alkyl or alkenyl or aryl; and n is an integer of 1-5), (ii) the molar fraction of methyl groups derived from the aluminoxane moieties to all methyl groups present in the polymethylaluminoxane product yielded is 26 mol% or lower, and (iii) the viscosity of the polymethylaluminoxane product yielded is 2.1×10-3 Pa·sec or lower as measured at 40°C.

Inventors:
KAJI EIICHI (JP)
TOYOTA KOUJI (JP)
KANAZAWA HIDEKI (JP)
Application Number:
PCT/JP2005/004952
Publication Date:
September 29, 2005
Filing Date:
March 18, 2005
Export Citation:
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Assignee:
TOSOH FINECHEM CORP (JP)
KAJI EIICHI (JP)
TOYOTA KOUJI (JP)
KANAZAWA HIDEKI (JP)
International Classes:
C07F5/06; C08F4/642; C08F4/6592; C08F10/00; (IPC1-7): C07F5/06; C08F4/642; C08F10/00
Domestic Patent References:
WO2003022890A12003-03-20
Foreign References:
JP2004182963A2004-07-02
JPS5819309A1983-02-04
JPS6035005A1985-02-22
JPS62234009A1987-10-14
JPS63234009A1988-09-29
JPS6466214A1989-03-13
JPH01207355A1989-08-21
US4544762A1985-10-01
US4665208A1987-05-12
JPH01258686A1989-10-16
Other References:
See also references of EP 1728795A4
Attorney, Agent or Firm:
Kishida, Masayuki (Marunouchi-Yaesu Building 6-2, Marunouchi 2-chom, Chiyoda-ku Tokyo 05, JP)
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