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    • 2. 发明申请
    • PREPARATION OF VERY HIGH MOLECULAR WEIGHT POLYAMIDE FILAMENTS
    • 非常高分子量聚酰胺纤维的制备
    • WO2009052049A1
    • 2009-04-23
    • PCT/US2008/079716
    • 2008-10-13
    • INVISTA TECHNOLOGIES S.A.R.L.SCHWINN, Glenn, AlanWEST, Gary, Raymond
    • SCHWINN, Glenn, AlanWEST, Gary, Raymond
    • D01F6/60D01F6/80D01F6/90D01D5/38
    • D01F6/60D01D5/38Y10T428/2904
    • Disclosed is the preparation of very high molecular weight polyamide, e.g., nylon, filaments., as indicated by such filaments exhibiting a very high Relative Viscosity (RV) value. Such filaments can be used to prepare polyamide staple fibers which are especially useful for industrial applications such as in papermachine felts. The filament preparation process involves a melt phase polymerization (MPP) procedure, optionally carried out in combination with a solid phase polymerization (SPP) procedure. Both of these procedures serve to increase the molecular weight and hence the RV of the polyamide filaments produced. These procedures are conducted under selected controlled conditions which permit realization of polyamide filaments of about 2 to 100 denier and which have RV values of greater than about 190. Such filaments also exhibit excellent tenacity and tenacity resistance properties.
    • 公开了非常高分子量的聚酰胺(例如尼龙,长丝)的制备,如由显示非常高的相对粘度(RV)值的长丝所示。 这种长丝可用于制备聚酰胺短纤维,其特别适用于诸如造纸机毛毡的工业应用。 细丝制备方法涉及熔融相聚合(MPP)方法,任选地与固相聚合(SPP)方法组合进行。 这两个方法都用于提高所生产的聚酰胺长丝的分子量,因此增加RV。 这些方法在选择的控制条件下进行,其允许实现约2至100旦尼尔的聚酰胺长丝,并且RV值大于约190.这种长丝还表现出优异的韧性和耐韧性。