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2. 发明公开

EP2407583A1 LIQUID CRYSTAL POLYESTER FIBERS AND METHOD FOR PRODUCING THE SAME 有权
标题翻译： R R R R R R R R R R R R R R R R R R R
公开(公告)号：EP2407583A1
公开(公告)日：2012-01-18
申请号：EP10750740.2
申请日：2010-03-04
申请人： Toray Industries, Inc.
发明人： FUNATSU Yoshitsugu , MAEDA Yuhei , SUZUKI Norio , KATSUTA Hiroo
IPC分类号： D02J13/00 , D01F6/62 , D06M15/643
CPC分类号： D06M15/643 , C09K19/3809 , D01D10/02 , D01F6/62 , D01F6/84 , D02J13/00 , Y10T428/298 , Y10T442/183
摘要： Disclosed are liquid crystal polyester fibers, which have a peak half-width of 15°C or greater at an endothermic peak (Tm1) observed by differential calorimetry under a temperature elevation of 20°C/minute from 50°C, polystyrene equivalent weight average molecular weight of 250,000 or more and 2,000,000 or less, and a variable waveform of less than 10% in terms of the half inert diagram mass waveform determined by a Uster yarn irregularity tester. Also disclosed is a method for producing liquid crystal polyester fibers, wherein liquid crystal polyester fibers are formed into a package, the fibers are then subjected to solid-phase polymerization, and the solid-phase polymerized liquid crystal polyester fibers are unrolled from the package and successively heat treated without being once taken up. The heat treatment temperature is controlled at a temperature of the endothermic peak temperature (Tm1) of the solid-phase polymerized liquid crystal polyester fibers + 60°C or higher, and the speeds of the fibers before and after heat treatment are regulated, respectively, by first and second rollers.
摘要翻译：公开了在50℃的温度升高20℃/分钟下通过差示量热法观察到的吸热峰（Tm1）的峰值半宽度为15℃以上的液晶聚酯纤维，聚苯乙烯换算重量平均值分子量为25万以上且2,000,000以下，以及由乌斯特纱线不均匀性测定仪确定的半惰性图质量波形的小于10％的可变波形。还公开了一种液晶聚酯纤维的制造方法，其中将液晶聚酯纤维形成包装，然后将纤维进行固相聚合，并将固相聚合的液晶聚酯纤维从包装上展开，连续热处理而不被一次吸收。将热处理温度控制在固相聚合液晶聚酯纤维的吸热峰温度（Tm1）+ 60℃以上的温度下，分别调节热处理前后的纤维速度，通过第一和第二辊。

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