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Investigation of methylaluminoxane as a cocatalyst for the polymerization of 1,3-butadiene to high cis-1,4-polybutadiene

✍ Scribed by Peter Cass; Kerry Pratt; Terry Mann; Bob Laslett; Ezio Rizzardo; Robert Burford

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 191 KB
Volume: 37
Category: Article
ISSN: 0887-624X
DOI: 10.1002/(sici)1099-0518(19990815)37:16<3277::aid-pola25>3.0.co;2-j

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✦ Synopsis

The catalytic system Co/methylaluminoxane/tert-butyl chloride has been studied and optimized for the polymerization of 1,3-butadiene to high cis-1,4-polybutadiene. The ratio of the individual catalyst components was investigated to achieve maximum conversion, stereoregularity, and molecular weight. It was found that the specific order of addition of catalyst components to the feedstock and aging time therein has critical influence in the polymerization reaction. This can be attributed to the rate of chlorinating the aluminoxane and the stability of the active catalyst sites obtained.

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