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    • 21. 发明授权
    • Process for the preparation of polyarylene sulphides
    • 聚亚芳基硫醚的制备方法
    • US4433138A
    • 1984-02-21
    • US379036
    • 1982-05-17
    • Karsten IdelDieter FreitagLudwig BottenbruchOtto Neuner
    • Karsten IdelDieter FreitagLudwig BottenbruchOtto Neuner
    • C08G75/02C08G75/06C08G75/14
    • C08G75/0254C08G75/0231
    • High molecular weight p-polyarylensulfides having a high melt viscosity, capable of being processed thermoplastically, and have good mechanical properties are produced by reacting components (a), (b), and (c) in a polar solvent with a molar ratio of (a):(c) in the range of 0.85:1 to 1.15:1 and a molar ratio of (c): solvent in the range of 1:2 to 1:15, for a time of up to 10 hours at a temperature of from 160.degree. C. to 300.degree. C., and in the presence of from 2 to 100 mole percent, relative to (c), of an N,N-dialkylcarboxamide;wherein component (a) is dihalogenobenzene with 50 to 100 mole percent of the formula ##STR1## and 0 to 50 mole percent of the formula ##STR2## wherein X is fluoro, chloro, bromo or iodo, and R is the same or different and each is selected from the group consisting of hydrogen, alkyl having 1 to 20 carbon atoms, cycloalkyl having 5 to 20 carbon atoms, aryl having 6 to 24 carbon atoms, alkaryl having 7 to 24 carbon atoms, aralkyl having 7 to 24 carbon atoms, and two R moieties linked together forming aryl having 6 to 24 carbon atoms or a heterocyclic moiety having an oxygen, nitrogen or sulphur hetero-atom and having 6 to 24 carbon atoms; with the proviso that at least one R is not hydrogen;component (b) is 0.1 to 2.4 mole percent, relative to the dihalogenobenzene, of a polyhalogenoaromatic of the formulaArX.sub.nwherein Ar is aryl or a heterocyclic moiety having an oxygen, nitrogen or sulphur heteroatom with said aryl and said heterocyclic each having from 6 to 24 carbon atoms;X is fluoro, chloro, bromo or iodo; andn is 3 or 4;and component (c) is alkali metal sulphide.
    • 通过使组分(a),(b)和(c)在极性溶剂中以摩尔比为((a),(b)和(c))反应,可以通过热塑性地热处理和具有良好的机械性能而具有高熔体粘度的高分子量对聚芳基硫化物 a):(c)在0.85:1至1.15:1的范围内,(c):溶剂的摩尔比在1:2至1:15的范围内,在温度下达10小时 相对于(c)为2〜100摩尔%的N,N-二烷基甲酰胺; 其中组分(a)是二卤代苯,其具有50-100摩尔%的式“IMAGE”和0至50摩尔%的式“IMAGE”,其中X是氟,氯,溴或碘,R是相同或不同的, 各自选自氢,具有1至20个碳原子的烷基,具有5至20个碳原子的环烷基,具有6至24个碳原子的芳基,具有7至24个碳原子的烷芳基,具有7至24个碳原子的芳烷基, 和两个连接在一起的R部分形成具有6至24个碳原子的芳基或具有氧,氮或硫杂原子并具有6至24个碳原子的杂环部分; 条件是至少一个R不是氢; 组分(b)相对于二卤代苯,为式ArXn的多卤代芳族化合物的0.1至2.4摩尔%,其中Ar为芳基或具有氧,氮或硫杂原子的杂环部分,所述芳基和所述杂环各自具有6至 24个碳原子; X是氟,氯,溴或碘; n为3或4; 组分(c)是碱金属硫化物。