Original document(16 pages)  中文版
    The invention relates to a para-aramid fibrid film, characterized in that at least 95% of the bonds of the polymer are para-oriented, and to a method for making said para-aramid fibrid film by a. polymerizing a para-oriented aromatic diamine and a para-oriented aromatic dicarboxylic acid halide to an aramid polymer having only para-oriented bonds in a mixture of solvents consisting of N-methylpyrrolidone or dimethylacetamide and calcium chloride or lithium chloride to obtain a dope wherein the polymer is dissolved in the mixture of solvents and the polymer concentration is 2 to 6 wt.%, and b. converting the dope to para-aramid fibrid film by using conventional methods known for making meta-aramid fibrid.
Application Number
申请号
200480036470 Application Date
申请日
2004.11.30
Title 名称 Para-aramid fibrid film
Publication Number
公开号
1890432 Publication Date
公开日
2007.01.03
Approval Pub. Date Granted Pub. Date
International Classification 分类号 D21H13/26;D01F6/60
Applicant(s) Name
申请人
Teijin Twaron B. V.
Address 地址
Inventor(s) Name 发明人 Hendriks Anton Johannes Josef;Wilbers Dennis;Grotendorst Harrie;Journee Rene;Oldenzeel Mirjam Ellen
Attorney & Agent 代理人 lin bainan liu jinhui
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