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    • 1. 发明授权
    • Process of making a module including a polysulphonic hollow fiber
membrane
    • 制造包含聚磺酸中空纤维膜的模块的工艺
    • US5641450A
    • 1997-06-24
    • US354065
    • 1994-12-06
    • Takuichi KobayashiKazumi Tanaka
    • Takuichi KobayashiKazumi Tanaka
    • B01D63/02D01D5/247
    • B01D65/022B01D63/021B01D2321/346B01D2323/30
    • A hollow polysulfonic fiber intended for a selectively transmissive membrane contains a hydrophilic polymer which is cross-linked into a water-insoluble form (for example polyvinylpyrrolidone) and is used in the form of a hydrogel containing water. A method for the production of a membrane module consists in spinning a hollow fiber by the use of a spinning solution containing a polysulfonic resin and a hydrophilic polymer, wetting the fiber above the saturated moisture content, and then, with the wet condition maintained, subjecting the fiber to the processes of module molding and radiation induced cross-linking, these processes being performed in either order. The method provides a selectively transmissive hollow polysulfone fiber membrane which displays less elution into water and a sharp molecular weight fractionation, so as to be usable safely in the fields of medicine and foodstuffs.
    • 用于选择性透射膜的中空多糖纤维含有交联成水不溶性形式的亲水性聚合物(例如聚乙烯吡咯烷酮),并以含水的水凝胶的形式使用。 制造膜组件的方法是通过使用含有聚磺树脂和亲水性聚合物的纺丝溶液纺丝中空纤维,将纤维润湿超过饱和水分含量,然后在湿条件保持下, 纤维对模块成型和辐射诱导交联的过程,这些过程以任何顺序进行。 该方法提供了选择性透射的中空聚砜纤维膜,其在水中显示较少的洗脱和尖锐的分子量分级,以便可以安全地用于医药和食品领域。
    • 5. 发明授权
    • Production method of polyamide
    • 聚酰胺的生产方法
    • US07138482B2
    • 2006-11-21
    • US10701440
    • 2003-11-06
    • Kazumi TanakaHideyuki KuroseTakatoshi ShidaMinoru Kikuchi
    • Kazumi TanakaHideyuki KuroseTakatoshi ShidaMinoru Kikuchi
    • C08G69/04C08G69/28C08G69/26
    • C08G69/28C08G69/04
    • In the production method of polyamide of the present invention, the mole balance at a set point during melt polymerization is estimated from a pre-established equation for calculating the mole balance during melt polymerization from a melt viscosity. On the basis of the estimated mole balance, the subsequent conditions of melt polymerization of a batch and the polymerization conditions of the next and subsequent batches are determined. In addition, the mole balance, molecular weight and relative viscosity of melt-polymerized polyamide are estimated from pre-established equations each for respectively calculating the mole balance, molecular weight and relative viscosity at the end point of melt polymerization from the melt viscosity. The conditions for solid phase-polymerizing the melt-polymerized polyamide are determined on the basis of estimated values.
    • 在本发明的聚酰胺的制造方法中,从熔融粘度计算熔融聚合时的摩尔平衡的预先设定的方程,估算熔融聚合时的设定点的摩尔平衡。 基于估计的摩尔平衡,确定批次的熔融聚合的后续条件和下一批和后续批次的聚合条件。 此外,熔融聚合聚酰胺的摩尔平衡,分子量和相对粘度由预先建立的方程估算,各自分别用于分别从熔体粘度计算熔融聚合终点处的摩尔平衡,分子量和相对粘度。 基于估计值确定熔融聚合的聚酰胺的固相聚合条件。