Functionalization of polyethylene with silane comonomers |
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Authors: | S. Lipponen,J. Sepp l |
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Affiliation: | S. Lipponen,J. Seppälä |
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Abstract: | We synthesized a new weakly interacting monomer with a reactive phenylsilane group that is an intermediate for many functional groups. The synthesis was performed in two steps: the hydrosilylation of 1,7‐octadiene with dimethylchlorosilane and a Grignard reaction with phenyl magnesium bromide. The new monomer, 7‐octenyldimethylphenylsilane, was isolated and copolymerized with ethylene via metallocene catalysts (Me2Si(Me‐2‐Ind)2ZrCl2 and Et(Ind)2ZrCl2) and methylaluminoxane (MAO) as a cocatalyst. Electropositive silicon had no negative effect on the copolymerization reaction. The polymerization activity increased, and the molar mass of the product remained at a high level. The comonomer incorporation reached a significant 11.8 wt % (2.6 mol %). © 2002 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 40: 1303–1308, 2002 |
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Keywords: | copolymerization functionalization of polyethylene metallocene catalysts silane comonomers polyolefins |
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