会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明授权
    • High strength fibers of stereoregular polystrene
    • 立体定向聚苯乙烯的高强度纤维
    • US5071917A
    • 1991-12-10
    • US569492
    • 1990-08-20
    • David R. PedersonPeter E. PieriniHenry N. BeckMark J. Semer
    • David R. PedersonPeter E. PieriniHenry N. BeckMark J. Semer
    • D01F6/22
    • D01F6/22
    • The invention is a crystalline fiber comprising syndiotactic polystyrene, or a mixture. Preferably the fiber is a high strength fiber isotactic polystyrene and syndiotactic polystyrene wherein the fiber is monoaxially oriented, has a tensile strength of about 10,000 psi or greater, and a modulus of about 1,000,000 psi or greater.In another aspect the invention is a process for the preparation of fibers of syndiotactic polystyrene, or a mixture of isotactic polystyrene and syndiotactic polystyrene which comprises:A. contacting syndiotactic polystyrene, or a mixture of isotactic polystyrene and syndiotactic polystyrene with a solvent for the polystyrene at elevated temperatures under conditions such that a homogenous solution is formed which has sufficient viscosity to be extruded;B. extruding the solution through an orifice to form a fiber at elevated temperatures;C. quenching the fiber by passing the fiber through one or more zones under conditions such that the fiber solidifies;D. removing the solvent for the polystyrene from the fiber; andE. cooling the fiber to ambient temperature.In the embodiment where it is desirable to prepare high strength fibers, the fibers are further exposed to the following process steps:F. heating the fiber to a temperature above the glass transition temperature of the polystyrene;G. redrawing the fiber to elongate the fiber, maximize crystallinity, and induce monoaxial orientation of the polystyrene in the fiber.
    • 本发明是包含间同立构聚苯乙烯或混合物的结晶纤维。 优选地,纤维是高强度纤维全同立构聚苯乙烯和间同立构聚苯乙烯,其中纤维是单轴取向的,具有约10,000psi或更大的拉伸强度和约1,000,000psi或更大的模量。 另一方面,本发明是制备间同立构聚苯乙烯纤维或全同立构聚苯乙烯与间同立构聚苯乙烯的混合物的方法,其包括:A.将间同立构聚苯乙烯或全同立构聚苯乙烯与间同立构聚苯乙烯的混合物与聚苯乙烯溶剂 在升高的温度下,在形成具有足够的待挤出粘度的均匀溶液的条件下, B.通过孔口挤出溶液以在升高的温度下形成纤维; C.通过在纤维固化的条件下使纤维通过一个或多个区域淬火纤维; D.从纤维中去除聚苯乙烯的溶剂; 和E.将纤维冷却至环境温度。 在需要制备高强度纤维的实施方案中,纤维进一步暴露于以下工艺步骤:F.将纤维加热到高于聚苯乙烯的玻璃化转变温度的温度; G.重新拉伸纤维以拉长纤维,使结晶度最大化,并诱导纤维中聚苯乙烯的单轴取向。
    • 8. 发明授权
    • Process for forming an article comprising poly(etheretherketone) (PEEK)
type polymers
    • 用于形成包含聚(醚醚酮)(PEEK)型聚合物的制品的方法
    • US5057600A
    • 1991-10-15
    • US107699
    • 1987-10-09
    • Henry N. BeckRichard A. Lundgard
    • Henry N. BeckRichard A. Lundgard
    • C08J3/09
    • C08J3/091C08J2371/00
    • The present invention relates to a process for the production of an article comprising a polymer itself comprising poly(etheretherketone), which process comprises:A. contacting poly(etheretherketone) with at least one organic compound, consisting essentially of carbon and hydrogen, and optionally oxygen, nitrogen, sulfur, halogen, or mixtures thereof having a molecular weight of between about 160 and 450 daltons and having at least one six membered aromatic ring structure, which compound is stable at a temperature of between 240.degree. and 400.degree. C. at ambient pressure, at a temperature of between about 240.degree. and 400.degree. C. at ambient pressure for a time effective to dissolve greater than about 10 percent by weight of the poly(etheretherketone) present;B. forming the solution of poly(etheretherketone) and solvent of step (A) into a desired article configuration;C. removing the solvent; andD. recovering the article comprising poly(etheretherketone) formed thereby. PEEK is a useful material for articles needing high temperature and solvent resistant properties. PEEK is also useful in the formation of membranes, hollow fibers and solid fibers which are porous, permeable, semipermeable or selectively permeable.
    • 本发明涉及制备包含聚合物本身的制品的方法,该聚合物本身包含聚(醚醚酮),该方法包括:A.将聚(醚醚酮)与至少一种基本上由碳和氢组成的有机化合物和任选地 氧,氮,硫,卤素或其混合物,其分子量为约160至450道尔顿且具有至少一个六元芳族环结构,该化合物在240-400℃的温度下是稳定的 环境压力,在约240-400℃的温度下,在环境压力下,有效地溶解存在的聚(醚醚酮)的大于约10重量%的时间; B.将步骤(A)的聚(醚醚)溶剂和溶剂形成所需的制品构型; C.除去溶剂; 和D.回收包含由其形成的聚(醚醚酮)的制品。 PEEK是需要耐高温和耐溶剂性能的物品的有用材料。 PEEK也可用于形成多孔,可渗透,半渗透或选择性渗透的膜,中空纤维和固体纤维。