Polyether triol with molecular weight distribution index being 1\^3~1\^5 was prepared in yield around 50% by tetrahydrofuran polymerization using heteropolyacid\|H\-3PW 12 O 40 and ethylene oxide as initiator system ...
The polymerzation of tetrahydrofuran (THF) initiated by heteropolyacid—H\-3PW\-\{12\}O\-\{40\} in low concentration could be promoted by oxetane (OX), but the polymerization stopped at lower conversion than that prom...
The polymerization of tetrahydrofuran(THF) initiated by heteropolyacid—H 3PW 12 O 40 (PW 12 ) in low concentrations could be effectively promoted by epichlorohydrin(ECH).However, the promotion activity of ECH is lowe...
The liquid crystalline copolyester (LCP)/montmorillonite nanocomposites were prepared by polycondensation of terephthalic acid, p \|acetoxy benzoic acid and 1,2\|diacetoxy benzene,in the presence of an organically mod...
The polymerization of tetrahydrofuran ( T H F) initiated by heteropolyacid H3 P W12 O40( P W12) in low concentration could be effectively promoted by propylene oxide( P O) . The polymerization conversion reached 50 % ...