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公开(公告)号：US4035465A
公开(公告)日：1977-07-12
申请号：US610843
申请日：1975-09-05
摘要： A method of making a drawn filament from a hot drawable poly-phenylene-1,3,4-oxadiazole having p-phenylene radicals or p-and m-phenylene radicals, with substituted bromine, wherein a solution of the polymer is dry jet wet spun into a coagulant, the filament washed and dried, and drawn at a temperature of at least 350.degree. C at a draw ratio of at least 6:1.
摘要翻译： 从具有对亚苯基或对 - 和间亚苯基的热可拉伸聚亚苯基-1,3,4-恶二唑与取代的溴制备拉丝的方法，其中聚合物的溶液是干喷射湿的 纺丝成凝结剂，将丝洗涤并干燥，并在至少350℃的温度下以至少6:1的拉伸比进行拉伸。
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公开(公告)号：US4091159A
公开(公告)日：1978-05-23
申请号：US728995
申请日：1976-10-04
CPC分类号： C08J5/121 , B29C65/02 , B29C66/71 , B29C66/729 , B29C66/91411 , B29C66/91943 , B29C65/18 , C08J2379/06 , Y10T428/2967 , Y10T442/3065 , Y10T442/50 , Y10T442/608
摘要： Fibres, fabrics made therefrom, or films of polyoxadiazoles, having an X-ray pattern which shows a single equatorial reflection corresponding to a spacing of 3.4A, are thermally bonded to themselves or other shaped articles by heating the contacting articles whilst under pressure to a temperature above the glass transition temperature of the polyoxadiazole.
摘要翻译： 纤维，由其制成的织物或具有X射线图案的polyoxadiazol膜，其显示对应于间隔3.4A的单个赤道反射，通过在压力下加热接触制品而与其自身或其它成形制品热粘合到 温度高于聚恶二唑的玻璃化转变温度。
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公开(公告)号：US4066601A
公开(公告)日：1978-01-03
申请号：US634751
申请日：1975-11-24
CPC分类号： C08G73/08
摘要： The production of a brominated, polyarylene - 1, 3, 4- oxadiazole solution in oleum involves adding bromine to a precursor solution of the polymer, wherein the polymer is capable of further polymerization and the solution has a viscosity below a predetermined minimum value, and then further polymerizing the brominated polymer to an extent which effects an increase in the viscosity to at least the predetermined minimum value.
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