Etherification of poly(oxymethylene)‐diol [α‐hydro‐ω‐hydroxypoly(oxymethylene)] with orthoesters in the presence of Lewis acids
作者:
Paolo Colombo,
Pierino Radici,
Sergio Custro,
Mario Ermoni,
期刊:
Die Makromolekulare Chemie
(WILEY Available online 1977)
卷期:
Volume 178,
issue 1
页码: 1-10
ISSN:0025-116X
年代: 1977
DOI:10.1002/macp.1977.021780101
出版商: Hüthig&Wepf Verlag
数据来源: WILEY
摘要:
AbstractAttempts were made to elucidate experimentally the behaviour of poly(oxymethylene)‐diol [α‐hydro‐ω‐hydroxypoly(oxymethylene)] in the etherification reaction in order to explain the decrease of the polymer molecular weight compared with that of the starting product and in order to determine the type of terminal groups and how the thermal resistance and alkali stability can be affected. In fact one finds that, in addition to the wanted terminal ether groups, formyl and orthoformyl (dialkoxymethyl) groups are formed having a different chemical resistance in comparison to that of the pure ethers, particularly in ba
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