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    • 36. 发明申请
    • POLYHYDROXYALKANOIC ACID FIBERS WITH HIGH STRENGTH, FIBERS WITH HIGH STRENGTH AND HIGH MODULUS OF ELASTICITY, AND PROCESSES FOR PRODUCING THE SAME
    • 具有高强度,高强度,高弹性模量的纤维的高强度聚羟基脂肪酸纤维及其生产方法
    • US20070138688A1
    • 2007-06-21
    • US11670342
    • 2007-02-01
    • Tadahisa IWATAYoshiharu DoiHideki Yamane
    • Tadahisa IWATAYoshiharu DoiHideki Yamane
    • D01D5/12
    • D01F6/625Y10T428/2913Y10T428/2967
    • The present invention is a process for producing a fiber, comprising: melt-extruding polyhydroxyalkanoic acid; solidifying the polyhydroxyalkanoic acid by quenching it to its glass transition temperature +15° C. or less, to form an amorphous fiber; cold-drawing the amorphous fiber at its glass transition temperature +20° C. or less; and subjecting the fiber to heat treatment under tension. The present invention can provide: a process for producing a fiber with high strength, and the fiber produced through the process; and a process for producing a fiber with high strength and high modulus of elasticity and the fiber with high strength and high modulus of elasticity produced through the process, regardless of molecular weights of PHAs varying depending on origins such as a wild type PEAs-producing microorganism product, a genetically modified product, and a chemical product.
    • 本发明是一种纤维的制造方法,其特征在于,包括:熔融挤出聚羟基链烷酸; 通过将聚羟基链烷酸淬火至其玻璃化转变温度+ 15℃以下来固化,形成非晶纤维; 在其玻璃化转变温度+ 20℃或更低温度下冷拉伸无定形纤维; 并在拉伸下对纤维进行热处理。 本发明可以提供一种高强度纤维的制造方法和通过该方法制造的纤维; 以及通过该方法生产具有高强度和高弹性模量的纤维的方法以及通过该方法产生的具有高强度和高弹性模量的纤维,而不管根据诸如野生型PEAs生产微生物的来源变化的PHAs的分子量如何 产品,转基因产品和化学产品。
    • 37. 发明授权
    • Biodegradable fiber and process for preparing the same
    • 生物降解纤维及其制备方法
    • US06645622B2
    • 2003-11-11
    • US10165935
    • 2002-06-10
    • Hideki Yamane
    • Hideki Yamane
    • D02G300
    • D01F6/625D01F6/84Y10T428/2913
    • The object of the present invention is to provide melt-extrusion conditions and drawing process which enable to carry out stable and smooth fiber spinning of polyester produced by microorganisms, particularly P(3HB-CO-3HH) which conventionally had problems in spinning stability, as well as P(3HB) and P(3HB-CO-3HV). Another object of the present invention is to obtain filament having particular properties according to the process. The process comprises extruding a thermoplastic polymer from a melt-extruder, then rapidly cooling the same to at most the glass transition point of the polymer immediately after the extrusion to prevent the filament from blocking, and carrying out partial crystallization of the same rapidly at not less than the glass transition point.
    • 本发明的目的是提供熔融挤出条件和拉伸方法,其能够进行由微生物特别是传统上具有纺丝稳定性问题的P(3HB-CO-3HH)生产的聚酯的稳定和光滑的纤维纺丝,如 以及P(3HB)和P(3HB-CO-3HV)。 本发明的另一个目的是根据该方法获得具有特定性质的长丝。 该方法包括从熔体挤出机中挤出热塑性聚合物,然后在挤出后立即将其快速冷却至聚合物的玻璃化转变点,以防止丝束被阻塞,并且不会快速地进行部分结晶 小于玻璃化转变点。