%0 Journal Article
%T STUDIES ON THE RING-OPENING POLYMERIZATION OF TETRAHYDROFURAN<br>四氢呋喃开环聚合的研究
%A Chang Hung-tse
%A Tung Shiu-tze
%A Voong Sing-tuh
%A <br>张鸿志
%A 董修智
%A 冯新德
%J 高分子学报
%D 1978
%I 
%X Polytetramethylene glycol (PTMG) was prepared by the ring-opening polymerization of tetrahydrofuran using a binary catalyst of 21% fuming sulfuric acid and perchloric acid with the once-through yield about 60% and the ultimate yield around 90-98%. The molecular weight of PTMG was controlled in the range of 1000-4500 by varying the binary catalyst system.The recovered tetrahydrofuran can be reused for polymerization after distilling with a short column and drying by sodium hydroxide.
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=15971983683C7643EE80F1CE621DEB60&aid=B72998E101CD2134&yid=EA437CDB73D9759D&iid=0B39A22176CE99FB&sid=EFD65B51496FB200&eid=AE09EACBCD1B2A13&journal_id=1000-3304&journal_name=高分子学报&referenced_num=4&reference_num=0