Výsledky vyhledávání - "Masato Koshio"

Possible structural effect ofa?,b?-dihydroxyacetophenone units in the preformed oligoesters upon copolycondensation with isomericc?,d?-dihydroxyacetophenones by TsCl/dimethylformamide/pyridine

Autor: Fukuji Higashi, Masato Koshio

Publikováno v: Journal of Polymer Science Part A: Polymer Chemistry. 41:616-623

A two-stage copolycondensation of a mixture of equal parts of isophthalic acid and terephthalic acid first with a′,b′-dihydroxyacetophenone (a′,b′-DHAP) and then with isomeric c′,d′-DHAP was examined at 60 and 80 °C. A structurally selec

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2487294750683b984b229d0d0333ad20
https://doi.org/10.1002/pola.10592

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Preparation of Polyarylates from Dihydroxyaceto-phenones by the Solution Polycondensation with TsCl/DMF/Py as a Condensing Agent

Autor: Masato Koshio, Fukuji Higashi, Shino Nishiyama

Publikováno v: Macromolecular Chemistry and Physics. 202:1812-1816

The polyesterification of a mixture of equal parts of isophthalic and terephthalic acids with 2,4-dihydroxybenzophenone (2,4-DHBP) and several dihydroxyacetophenones (DHAPs), from which polyesters of high molecular weight have not been prepared, was

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::b7068ec5cac3c9d7ac14278921c63c22
https://doi.org/10.1002/1521-3935(20010601)202:9<1812::aid-macp1812>3.0.co

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