Fibers formed from a blend of a modified aliphatic-aromatic copolyester and thermoplastic starch
    1.
    发明授权
    Fibers formed from a blend of a modified aliphatic-aromatic copolyester and thermoplastic starch 有权
    由改性脂族 - 芳族共聚酯和热塑性淀粉的共混物形成的纤维

    公开(公告)号:US08470222B2

    公开(公告)日:2013-06-25

    申请号:US12134511

    申请日:2008-06-06

    IPC分类号: B29C47/06 D02G3/00

    摘要: 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.

    摘要翻译: 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较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。

    POLYLACTIC ACID FIBERS
    3.
    发明申请
    POLYLACTIC ACID FIBERS 有权
    聚酰胺纤维

    公开(公告)号:US20110065573A1

    公开(公告)日:2011-03-17

    申请号:US12989450

    申请日:2008-05-30

    IPC分类号: B01J20/26 C08L33/06 B29C47/14

    摘要: A biodegradable fiber that is formed from a thermoplastic composition that contains polylactic acid, a plasticizer, and a compatibilizer is provided. The compatibilizer includes a polymer that is modified with a polar compound that is compatible with the plasticizer and a non-polar component provided by the polymer backbone that is compatible with polylactic acid. Such functionalized polymers may thus stabilize each of the polymer phases and reduce plasticizer migration. By reducing the plasticizer migration, the composition may remain ductile and soft. Further, addition of the functionalized polymer may also promote improved bonding and initiate crystallization faster than conventional polylactic acid fibers. The polar compound includes an organic acid, an anhydride of an organic acid, an amide of an organic acid, or a combination thereof. Such compounds are believed to be more compatible with the generally acidic nature of the polylactic acid fibers.

    摘要翻译: 提供由含有聚乳酸,增塑剂和增容剂的热塑性组合物形成的生物可降解纤维。 增容剂包括用与增塑剂相容的极性化合物改性的聚合物和由与聚乳酸相容的聚合物主链提供的非极性组分。 这样的官能化聚合物因此可以稳定每个聚合物相并减少增塑剂迁移。 通过减少增塑剂迁移,组合物可保持延展性和柔软性。 此外,官能化聚合物的添加还可以促进改进的粘合并且比常规聚乳酸纤维更快地引发结晶。 极性化合物包括有机酸,有机酸的酸酐,有机酸的酰胺或其组合。 据信这些化合物与聚乳酸纤维的普遍酸性特性更相容。

    BIODEGRADABLE POLYLACTIC ACID FOR USE IN NONWOVEN WEBS
    4.
    发明申请
    BIODEGRADABLE POLYLACTIC ACID FOR USE IN NONWOVEN WEBS 有权
    可生物降解的聚酰胺酸用于非万维网

    公开(公告)号:US20090311937A1

    公开(公告)日:2009-12-17

    申请号:US12307389

    申请日:2006-07-14

    IPC分类号: D04H1/54 C08G63/06 D04H13/00

    摘要: A method for forming a biodegradable polylactic acid suitable for use in fibers is provided. In one embodiment, for example, a polylactic acid is melt blended with an alcohol to initiate an alcoholysis reaction that results in a polylactic acid having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and polymer concentrations, catalysts, temperature, etc.), a modified polylactic acid may be achieved that has a molecular weight lower than the starting polylactic acid. Such lower molecular weight polymers also 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.

    摘要翻译: 提供一种形成适用于纤维的可生物降解的聚乳酸的方法。 在一个实施方案中,例如,聚乳酸与醇熔融共混以引发醇解反应,其导致具有一个或多个羟烷基或烷基端基的聚乳酸。 通过选择性地控制醇解条件(例如醇和聚合物浓度,催化剂,温度等),可以实现分子量低于起始聚乳酸的改性聚乳酸​​。 这种低分子量聚合物还具有较高的熔体流动指数和较低的表观粘度的组合,其可用于各种纤维形成应用中,例如在非织造纤维网的熔喷中。

    Fibers Formed from a Blend of a Modified Aliphatic-Aromatic Copolyester and Thermoplastic Starch
    5.
    发明申请
    Fibers Formed from a Blend of a Modified Aliphatic-Aromatic Copolyester and Thermoplastic Starch 有权
    由改性脂族芳族共聚酯和热塑性淀粉的共混物形成的纤维

    公开(公告)号:US20090305592A1

    公开(公告)日:2009-12-10

    申请号:US12134511

    申请日:2008-06-06

    IPC分类号: D04H13/00 C08L67/02 B29C47/00

    摘要: 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.

    摘要翻译: 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较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。

    BIODEGRADABLE ALIPHATIC-POLYESTER FOR USE IN NONWOVEN WEBS
    6.
    发明申请
    BIODEGRADABLE ALIPHATIC-POLYESTER FOR USE IN NONWOVEN WEBS 有权
    可生物降解的聚氨酯用于非万维网

    公开(公告)号:US20090203281A1

    公开(公告)日:2009-08-13

    申请号:US12307386

    申请日:2006-07-14

    IPC分类号: D04H13/00 C08F8/00

    摘要: A method for forming a biodegradable aliphatic polyester suitable for use in fibers is provided. In one embodiment, for example, an aliphatic polyester is melt blended with an alcohol to initiate an alcoholysis reaction that results in a polyester having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and polymer concentrations, catalysts, temperature, etc.), a modified aliphatic polyester may be achieved that has a molecular weight lower than the starting aliphatic polyester Such lower molecular weight polymers also 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.

    摘要翻译: 提供了适用于纤维的可生物降解的脂肪族聚酯的形成方法。 在一个实施方案中,例如,脂族聚酯与醇熔融共混以引发醇解反应,其导致具有一个或多个羟烷基或烷基端基的聚酯。 通过选择性地控制醇解条件(例如醇和聚合物浓度,催化剂,温度等),可以获得具有低于起始脂族聚酯的分子量的改性脂族聚酯。这种低分子量聚合物也具有 更高的熔体流动指数和较低的表观粘度,其可用于各种各样的纤维成型应用中,例如在非织造纤维网的熔喷中。

    Biodegradable aliphatic-aromatic copolyester for use in nonwoven webs
    8.
    发明授权
    Biodegradable aliphatic-aromatic copolyester for use in nonwoven webs 有权
    用于非织造纤维网的可生物降解的脂族 - 芳族共聚酯

    公开(公告)号:US08710172B2

    公开(公告)日:2014-04-29

    申请号:US12307384

    申请日:2006-07-14

    IPC分类号: C08G63/02 C08G63/00

    摘要: A method for forming a biodegradable aliphatic-aromatic copolyester suitable for use in fibers is provided. In one embodiment, for example, an aliphatic-aromatic copolyester is melt blended with an alcohol to initiate an alcoholysis reaction that results in a copolyester having one or more hydroxyalkyl or alkyl terminal groups. By selectively controlling the alcoholysis conditions (e.g., alcohol and copolymer concentrations, catalysts, temperature, etc.), a modified aliphatic-aromatic copolyester may be achieved that has a molecular weight lower than the starting aliphatic-aromatic polymer. Such lower molecular weight polymers also 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.

    摘要翻译: 提供了一种形成适用于纤维的可生物降解的脂族 - 芳族共聚酯的方法。 在一个实施方案中,例如,脂族 - 芳族共聚酯与醇熔融共混以引发醇解反应,其导致具有一个或多个羟烷基或烷基端基的共聚酯。 通过选择性地控制醇解条件(例如醇和共聚物浓度,催化剂,温度等),可以实现具有低于起始脂族 - 芳族聚合物的分子量的改性脂族 - 芳族共聚酯。 这种低分子量聚合物还具有较高的熔体流动指数和较低的表观粘度的组合,其可用于各种纤维形成应用中,例如在非织造纤维网的熔喷中。

    Binding Assays Utilizing Time-Resolved Up-Converting Luminescence Detection
    9.
    发明申请
    Binding Assays Utilizing Time-Resolved Up-Converting Luminescence Detection 审中-公开
    利用时间上升转换发光检测的结合分析

    公开(公告)号:US20130171623A1

    公开(公告)日:2013-07-04

    申请号:US13730810

    申请日:2012-12-28

    申请人: Aimin He

    发明人: Aimin He

    IPC分类号: G01N33/58

    CPC分类号: G01N33/582 G01N2458/40

    摘要: This invention describes a general binding assay method to detect the presence and quantity of analyte in a sample. The method uses time-resolved up-converting fluorescence detection technique to provide highly sensitive detection without using expensive optical components such as band-pass optical filters. The method uses pulsed long wavelength light for excitation and time-delayed luminescence detection, resulting in little interferences from sample matrices. Furthermore, the usage of long wavelength excitation light requires simpler sample preparation and processing such as removal of red blood cells, which otherwise will significantly interfere with excitation efficiency of the luminescence probes.

    摘要翻译: 本发明描述了检测样品中分析物的存在和量的一般结合测定方法。 该方法使用时间分辨上变换荧光检测技术来提供高灵敏度检测,而不使用昂贵的光学部件,例如带通光学滤波器。 该方法使用脉冲长波长光进行激发和时间延迟的发光检测,导致样品基质几乎没有干扰。 此外,长波长激发光的使用需要更简单的样品制备和处理,例如去除红细胞,否则将显着干扰发光探针的激发效率。