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    • 1. 发明授权
    • Process of forming an aramid copolymer
    • 形成芳族聚酰胺共聚物的方法
    • US08907052B2
    • 2014-12-09
    • US13559698
    • 2012-07-27
    • Kiu-Seung Lee
    • Kiu-Seung Lee
    • C08G73/00C08G69/26C08G69/32C08K5/3415C08G73/18C08K5/20C08K3/16
    • C08K5/3415C08G69/265C08G69/32C08G73/18C08K3/16C08K5/20C08L77/10C08L79/04
    • The invention concerns processes for forming a polymer comprising residues of 2-(4-amino phenyl)-5(6)amino benzimidazole (DAPBI), paraphenylene diamine (PPD), and terephthaloyl dichloride, comprising the steps of: (a) forming a slurry of DAPBI in a solvent system comprising an organic solvent and an inorganic salt; (b) adding less than a stoichiometric amount, relative to the amount of DAPBI, of terephthaloyl dichloride to the slurry; (c) agitating the slurry to react the DAPBI and terephthaloyl dichloride to form an oligomeric solution; (d) adding PPD to the oligomeric solution and agitating until essentially all of the PPD is dissolved, followed by the addition of terephthaloyl dichloride to form a prepolymer solution; and (e) allowing the prepolymer solution to form a polymer.
    • 本发明涉及形成包含2-(4-氨基苯基)-5(6)氨基苯并咪唑(DAPBI),对苯二胺(PPD)和对苯二甲酰氯的残留物的聚合物的方法,包括以下步骤:(a) DAPBI的浆料在包含有机溶剂和无机盐的溶剂体系中; (b)将相对于DAPBI的量的对苯二甲酰氯的化学计量相对于浆料加入少于; (c)搅拌浆料以使DAPBI和对苯二酰氯反应形成低聚溶液; (d)将PPD加入到低聚溶液中并搅拌直到基本上所有的PPD溶解,然后加入对苯二甲酰氯以形成预聚物溶液; 和(e)使预聚物溶液形成聚合物。