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    Process for producing wet spun or shaped structures
    1.
    发明授权
    Process for producing wet spun or shaped structures 失效
    生产湿纺或成形结构的方法

    公开(公告)号：US3992504A

    公开(公告)日：1976-11-16

    申请号：US598535

    申请日：1975-07-23

    申请人： Josef Studinka ,  Rudolf Gabler

    发明人： Josef Studinka ,  Rudolf Gabler

    IPC分类号： D01F6/74 ,  D01F6/00

    CPC分类号： D01F6/74

    摘要： Fibers and yarn and a process for preparing them comprising dissolving in concentrated sulfuric acid a polymer containing at least 75 mol percent of an aromatic poly-(1,3,4-oxadiazole) having the repeating structural formula ##SPC1##In which Ar is ##SPC2## the benzene rings in A or B being substituted or unsubstituted; the linking bonds in A being situated m- or p- with respect to each other, and in B situated m- or p- with respect to X; X being --SO.sub.2 -- or --CO--; and n being 1 or 2. The solution is then spun through a spinneret into a substantially water-free precipitating medium of at least one liquid having the formula (II) ##EQU1## IN WHICH R.sub.1, R.sub.2 and R.sub.3 may be the same or different and are alkyl groups having 1 to 4 carbon atoms, and R.sub.3 may also be H, and in which R.sub.1 and R.sub.2 or R.sub.1 and R.sub.3 may together comprise a divalent alkylene radical, the total number of carbon atoms in R.sub.1, R.sub.2 and R.sub.3 being not more than 8, and in which Z is ##EQU2## a being equal to 1 or 2, b being equal to the valence of Z.

    摘要翻译： 纤维和纱线及其制备方法包括在浓硫酸中溶解含有至少75mol％具有重复结构式+ q，10 IN Ar的芳族聚 - （1,3,4-恶二唑）的聚合物 A或B中的苯环是取代或未取代的; A中的连接键相对于彼此位于m-或p-位，并且在相对于X位于m-或p-的B中; X是-SO 2 - 或-CO-; 然后将溶液通过喷丝头纺丝成至少一种具有式（II）的液体的基本上无水的沉淀介质，其中R1，R2， R2和R3可以相同或不同，并且是具有1至4个碳原子的烷基，R3也可以是H，并且其中R1和R2或R1和R3可以一起包含二价亚烷基，碳总数 R 1，R 2和R 3中的原子不大于8，并且其中Z是OCH 3并联角C = O或-P-N ANGLE CH 3 2 a等于1或2，b等于Z的化合价。