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Molecular Weight Control of Thermosetting Poly(phenylene ether) Copolymer Produced by Heterogeneous Oxidative Coupling Polymerization

¹ Hitachi Research Laboratory, Hitachi Ltd., 7-1-1, Omika, Hitachi, Ibaraki 319-1292, Japan
² Department of Organic and Polymeric Materials, Tokyo Institute of Technology, 2-12-1, O-okayama, Meguro-ku, Tokyo 152-8552, Japan

^* To whom correspondence should be addressed. E-mail: jun.nunoshige.ju{at}hitachi.com.

	Abstract

An efficient synthetic method to control the molecular weights of poly(phenylene ether) copolymer (Allyl-PPE) with a narrow molecular weight distribution (MWD) by oxidative coupling polymerization of 2,6-dimethylphenol (DMP) and 2-allyl-6-methylphenol (AMP) has been developed. This polymerization was carried out in the presence of the di-µ-hydroxo-bis[(N,N,N',N'-tetramethylethylenediamine)-copper(II)] chloride (Cu/TMEDA) catalyst in a water droplet/toluene heterogeneous system. The polymerization conditions such as the effects of the Cu/TMEDA concentration and the amount of water were investigated, and it was found that the molecular weight of Allyl-PPE could be easily controlled by changing the concentration of Cu/TMEDA aqueous solution.

First published on September 16, 2009
High Performance Polymers 2009, doi:10.1177/0954008309337564


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