The Synthesis of the Polymer Containing the Si-O-phenylene Bond, using Transition Metal Salts as Catalysts
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概要
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Various transition metals were found to be effective as catalysts in the dehydrocondensation of phenols and silanes.<BR>R<SUB>3</SUB>SiH+PhOH\oversetmetal salt→R<SUB>3</SUB>SiOPh+H<SUB>2</SUB><BR>The effective species were PdCl<SUB>2</SUB>, H<SUB>2</SUB>PtCl<SUB>6</SUB>·6H<SUB>2</SUB>O, PtCl<SUB>2</SUB>, RhCl<SUB>3</SUB>, NiCl<SUB>2</SUB>, silane-treated NiCl<SUB>2</SUB>, Ptl<SUB>2</SUB>, PtS, Raney Ni, Pd-black, Pt-black, Au-black, FeCl<SUB>3</SUB>, ZnCl<SUB>2</SUB>, CuSO<SUB>4</SUB>, CuCl, Cu–Cr, Cu(CH<SUB>3</SUB>CO<SUB>2</SUB>)·CuO, the methyl ethyl ketoxime complex of Pd, Pt(OX)<SUB>3</SUB>, and Pd(OX)<SUB>2</SUB>. The ineffective species were metal mirrors of Pd, Au, Ag, Pt, and Cu, and the acetylacetonato complex of Ni, Co(II), Co(III), and Cu. The reaction was then extended to the preparation of polymers containing a Si–O–phenylene linkage in the main chain. Dihydricphenols, <I>e.g.</I>, bisphenol A, hydroquinone, 4,4′-dihydroxydiphenyl gave high-molecular-weight polymers with an equimolar amount of a dihydro-silane, <I>e.g.</I>, diphenylsilane, <I>p</I>-toluylmethylsilane and <I>p</I>-bisdimethylsilylphenylene, in bulk or in a solvent at temperatures above 150°C. The polymer obtained began to flow above 100°C.
- 公益社団法人 日本化学会の論文
著者
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TODA Fujio
Department of Bioengineerig, Faculty of Bioscience and Biotechnology, Tokyo Institute of Technology
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Hattori Kenjiro
Department Of Applied Chemistry Faculty Of Engineering Tokyo Institute Of Polytechnics
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Abe Minoru
Department Of Electrical Engineering Kyoto University
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Iwakura Yoshio
Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo
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Uno Keikichi
Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo
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Hattori Kenjiro
Department of Synthetic Chemistry, Faculty of Engineering, The University of Tokyo
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