Process for preparing odified sulfonic acid lateral group polybenzimidazoles proton interchange films
Title：
Process for preparing odified sulfonic acid lateral group polybenzimidazoles proton interchange films
Application Number：
 200410039114
Application Date：
 2004/02/06
Announcement Date：
 2004/12/29
Pub. Date：
 2006/04/19
Publication Number：
 1558457
Announcement Number：
 1252842
Grant Date：
 2006-4-19
Granted Pub. Date：
 2006-4-19
ApplicationType：
 Invention
State/Country：
 11[China|beijing]
IPC：
 H01M 2/14, H01M 4/88, B01D 69/00, C08J 5/22
Applicant(s)：
 Tsinghua University
Inventor(s)：
 Xie Xiaofeng, Xu Jingming, Mao Zongqiang
Key Words：
 preparing process, odified sulfonic acid lateral group, polybenzimidazoles, proton interchange films
Abstract：
 The invention discloses a process for preparing modified sulfonic acid lateral group polybenzimidazole proton interchange film used in methyl alcohol fuel cells which comprises, subjecting fouramine group compounds, 3-alkyl-isophthalic acid and fat diprotonic acid to polycondensation in polyphosphoric acid system, obtaining homogeneous solution, subjecting the solution to neutralization, rinshing, filtering and dehumidification to obtain polycondensate crude product, dissolving the polycondensate crude product in strong inorganic acid, disposing in water to obtain the pure polycondensate product, dissolving the pure polycondensate in organic solvent to obtain homogeneous polycondensate solution, making films with pouring method or flowing method.
Claim：
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PCT：
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