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    • 4. 发明申请
    • FIBERS FORMED FROM A BLEND OF A MODIFIED ALIPHATIC-AROMATIC COPOLYESTER AND THERMOPLASTIC STARCH
    • 由改性的芳香族芳族共聚物和热塑性淀粉的混合物形成的纤维
    • WO2009147544A2
    • 2009-12-10
    • PCT/IB2009051555
    • 2009-04-14
    • KIMBERLY CLARK COSHI BOWANG JAMES HHE AIMIN
    • SHI BOWANG JAMES HHE AIMIN
    • D01F6/84D01F6/78D04H1/42
    • D01F6/84D01D5/08D01D5/12D01F6/92D04H1/435D04H1/4382Y10T428/2913Y10T442/60
    • A fiber formed from a thermoplastic composition that contains a thermoplastic starch and an aliphatic-aromatic copolyester is provided. The copolyester enhances the strength of the starch-containing fibers and also facilitates the ability of the starch to be melt processed. Due to its relatively low melting point, the aliphatic-aromatic copolyester may also be extruded with the thermoplastic starch at a temperature that is low enough to avoid substantial removal of the moisture found in the starch. Furthermore, the aliphatic-aromatic copolyester is also modified with an alcohol so that it contains one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the conditions of the alcoholysis reaction (e.g., alcohol and copolymer concentrations, temperature, etc.), the resulting modified aliphatic-aromatic copolyester may have a molecular weight that is relatively low. Such low molecular weight polymers have the combination of a higher melt flow index and lower apparent viscosity, which is useful in a wide variety of fiber forming applications, such as in the meltblowing of nonwoven webs.
    • 提供由含有热塑性淀粉和脂肪族 - 芳香族共聚酯的热塑性组合物形成的纤维。 共聚酯增强了含淀粉纤维的强度,并且促进了淀粉熔融加工的能力。 由于其相对低的熔点,脂肪族 - 芳族共聚酯也可以在足够低的温度下与热塑性淀粉一起挤出,以避免显着除去在淀粉中发现的水分。 此外,脂族 - 芳族共聚酯也用醇改性,使得其含有一个或多个羟烷基或烷基端基。 通过选择性地控制醇解反应的条件(例如醇和共聚物浓度,温度等),所得改性的脂肪族 - 芳族共聚酯的分子量可以相对较低。 这种低分子量聚合物具有更高的熔体流动指数和较低的表观粘度的组合,其可用于各种各样的纤维形成应用中,例如在非织造纤维网的熔喷中。