Production of and drying of copolymer fibers
    2.
    发明授权
    Production of and drying of copolymer fibers 有权
    共聚物纤维的生产和干燥

    公开(公告)号:US08671524B2

    公开(公告)日:2014-03-18

    申请号:US13349611

    申请日:2012-01-13

    Abstract: The present invention concerns processes for reducing water in never-dried fiber comprising copolymer derived from the copolymerization of para-phenylenediamine, 5(6)-amino-2-(p-aminophenyl)benzimidazole; and terephthaloyl dichloride, the process having the following steps in a continuous process, (a) a step of drying a never-dried fiber having at least 0.1% sulfur at less than 150° C. until the moisture content of the fiber is less than 60 weight percent; and (b) a step of further drying the fiber above 150° C. while the moisture content of the fiber is no more than 60 weight percent; and the fiber being further heated to at least 350° C. in either an additional continuous or separate step.

    Abstract translation: 本发明涉及减少未干燥纤维中水分的方法,包括由对苯二胺,5(6) - 氨基-2-(对氨基苯基)苯并咪唑的共聚得到的共聚物; 和对苯二甲酰氯,该方法在连续方法中具有以下步骤,(a)在小于150℃下干燥具有至少0.1%硫的未干燥纤维,直到纤维的水分含量低于 60% 和(b)当纤维的水分含量不超过60重量%时,纤维进一步干燥150℃以上的步骤; 并且在额外的连续或分开的步骤中将纤维进一步加热至至少350℃。

Patent Agency Ranking