Method for producing submicron polytetrafluoroethylene powder and products thereof
    1.
    发明申请
    Method for producing submicron polytetrafluoroethylene powder and products thereof 有权
    亚微米聚四氟乙烯粉末的制造方法及其制造方法

    公开(公告)号:US20070072956A1

    公开(公告)日:2007-03-29

    申请号:US10543514

    申请日:2004-01-26

    IPC分类号: C08J3/28

    摘要: A method for treating polytetrafluoroethylene (PTFE) in its reactor latex form to produce a dry submicron PTFE powder that remains stable without rheology modifiers, surfactants, wetting agents, pH adjusters or other stabilizing additives. Reactor latex PTFE formed during an emulsion polymerization process can be irradiated, with an electron beam or gamma rays, during or after the polymerization to form a product where the dry submicron PTFE powder is free-flowing, tends not to self-agglomerate and tends not to dust into the air upon handling so that the PTFE is readily dispersible when placed in a desired application system or medium.

    摘要翻译: 一种在其反应器胶乳形式中处理聚四氟乙烯(PTFE)的方法,以产生干燥亚微米PTFE粉末,其在没有流变改性剂,表面活性剂,润湿剂,pH调节剂或其它稳定添加剂的情况下保持稳定。 在乳液聚合过程中形成的反应器胶乳PTFE可以在聚合过程中或之后用电子束或γ射线照射,形成干亚微米PTFE粉末自由流动的产品,倾向于不自聚集,并且不趋向于 在处理时灰尘进入空气中,使得PTFE在放置在所需的应用系统或介质中时容易分散。

    Methods for producing submicron polytetrafluoroethylene powder and products thereof

    公开(公告)号:US20060020072A1

    公开(公告)日:2006-01-26

    申请号:US11024582

    申请日:2004-12-29

    IPC分类号: C08K5/01

    摘要: A method for producing submicron polytetrafluoroethylene (“PTFE”) powder in a free-flowing, readily dispersible form. The irradiated PTFE starting material is placed in a desired solvent and undergoes grinding until the PTFE particles reach submicron size. The submicron particles are subsequently recovered from the solvent and dried to form a powder that may have particles less than 1.00 μm in size. The dry PTFE powder may then be readily dispersed to submicron size into a desired application system. The submicron PTFE powder of this method is free-flowing, readily dispersible in various application systems, tends not to “dust” or self-agglomerate. Improved aqueous and organic dispersions of submicron PTFE particles may also be formed that display increased stability and require much less agitation than other processes of forming such dispersions. Such improved PTFE dispersions may be formed with or without the addition of surfactants, wetting agents, rheology modifiers, pH-adjusting agents, and the like.

    Method for producing submicron polytetrafluoroethylene powder and products thereof
    3.
    发明授权
    Method for producing submicron polytetrafluoroethylene powder and products thereof 有权
    亚微米聚四氟乙烯粉末的制造方法及其制造方法

    公开(公告)号:US07491791B2

    公开(公告)日:2009-02-17

    申请号:US10543514

    申请日:2004-01-26

    IPC分类号: C08F6/00 C08F6/22

    摘要: A method for treating polytetrafluoroethylene (PTFE) in its reactor latex form to produce a dry submicron PTFE powder that remains stable without rheology modifiers, surfactants, wetting agents, pH adjusters or other stabilizing additives. Reactor latex PTFE formed during an emulsion polymerization process can be irradiated, with an electron beam or gamma rays, during or after the polymerization to form a product where the dry submicron PTFE powder is free-flowing, tends not to self-agglomerate and tends not to dust into the air upon handling so that the PTFE is readily dispersible when placed in a desired application system or medium.

    摘要翻译: 一种在其反应器胶乳形式中处理聚四氟乙烯(PTFE)的方法,以产生干燥亚微米PTFE粉末,其在没有流变改性剂,表面活性剂,润湿剂,pH调节剂或其它稳定添加剂的情况下保持稳定。 在乳液聚合过程中形成的反应器胶乳PTFE可以在聚合过程中或之后用电子束或γ射线照射,形成干亚微米PTFE粉末自由流动的产品,倾向于不自聚集,并且不趋向于 在处理时灰尘进入空气中,使得PTFE在放置在所需的应用系统或介质中时容易分散。

    Methods for producing submicron polytetrafluoroethylene powder and products thereof
    4.
    发明授权
    Methods for producing submicron polytetrafluoroethylene powder and products thereof 有权
    亚微米聚四氟乙烯粉末的制造方法及其制造方法

    公开(公告)号:US07482393B2

    公开(公告)日:2009-01-27

    申请号:US11024582

    申请日:2004-12-29

    IPC分类号: C08F2/46 C08J3/28

    摘要: A method for producing submicron polytetrafluoroethylene (“PTFE”) powder in a free-flowing, readily dispersible form. The irradiated PTFE starting material is placed in a desired solvent and undergoes grinding until the PTFE particles reach submicron size. The submicron particles are subsequently recovered from the solvent and dried to form a powder that may have particles less than 1.00 μm in size. The dry PTFE powder may then be readily dispersed to submicron size into a desired application system. The submicron PTFE powder of this method is free-flowing, readily dispersible in various application systems, tends not to “dust” or self-agglomerate. Improved aqueous and organic dispersions of submicron PTFE particles may also be formed that display increased stability and require much less agitation than other processes of forming such dispersions. Such improved PTFE dispersions may be formed with or without the addition of surfactants, wetting agents, rheology modifiers, pH-adjusting agents, and the like.

    摘要翻译: 以自由流动,容易分散的形式生产亚微米聚四氟乙烯(“PTFE”)粉末的方法。 将被照射的PTFE原料置于所需的溶剂中并进行研磨直到PTFE颗粒达到亚微米尺寸。 亚微米颗粒随后从溶剂中回收并干燥以形成可以具有小于1.00μm的颗粒尺寸的粉末。 然后可以将干燥的PTFE粉末容易地分散到亚微米尺寸到所需的应用系统。 这种方法的亚微米PTFE粉末是自由流动的,易于分散在各种应用系统中,倾向于不“粉尘”或自聚集。 还可以形成改进的亚微米PTFE颗粒的水性和有机分散体,其显示出增加的稳定性并且需要比其它形成这种分散体的方法少得多的搅拌。 这种改进的PTFE分散体可以在添加或不添加表面活性剂,润湿剂,流变改性剂,pH调节剂等的情况下形成。

    Methods for producing submicron polytetrafluoroethylene powder and products thereof
    5.
    发明授权
    Methods for producing submicron polytetrafluoroethylene powder and products thereof 有权
    亚微米聚四氟乙烯粉末的制造方法及其制造方法

    公开(公告)号:US06881784B2

    公开(公告)日:2005-04-19

    申请号:US10389569

    申请日:2003-03-14

    摘要: A method for producing submicron polytetrafluoroethylene (“PTFE”) powder in a free-flowing, readily dispersible form. The irradiated PTFE starting material is placed in a desired solvent and undergoes grinding until the PTFE particles reach submicron size. The submicron particles are subsequently recovered from the solvent and dried to form a powder that may have particles less than 1.00 μm in size. The dry PTFE powder may then be readily dispersed to submicron size into a desired application system. The submicron PTFE powder of this method is free-flowing, readily dispersible in various application systems, tends not to “dust” or self-agglomerate. Improved aqueous and organic dispersions of submicron PTFE particles may also be formed that display increased stability and require much less agitation than other processes of forming such dispersions. Such improved PTFE dispersions may be formed with or without the addition of surfactants, wetting agents, rheology modifiers, pH-adjusting agents, and the like.

    摘要翻译: 以自由流动,容易分散的形式生产亚微米聚四氟乙烯(“PTFE”)粉末的方法。 将被照射的PTFE原料置于所需的溶剂中并进行研磨直到PTFE颗粒达到亚微米尺寸。 亚微米颗粒随后从溶剂中回收并干燥以形成可以具有小于1.00μm的颗粒尺寸的粉末。 然后可以将干燥的PTFE粉末容易地分散到亚微米尺寸到所需的应用系统。 这种方法的亚微米PTFE粉末是自由流动的,易于分散在各种应用系统中,倾向于不“粉尘”或自聚集。 还可以形成改进的亚微米PTFE颗粒的水性和有机分散体,其显示出增加的稳定性并且需要比其它形成这种分散体的方法少得多的搅拌。 这种改进的PTFE分散体可以在添加或不添加表面活性剂,润湿剂,流变改性剂,pH调节剂等的情况下形成。

    Physical methods of dispersing characteristic use particles and compositions thereof
    9.
    发明授权
    Physical methods of dispersing characteristic use particles and compositions thereof 有权
    分散特征使用颗粒及其组合物的物理方法

    公开(公告)号:US07189769B2

    公开(公告)日:2007-03-13

    申请号:US10953732

    申请日:2004-09-29

    摘要: The present invention provides compositions that are capable of being dispersed in a target medium. The compositions include characteristic use particles entrapped within a physical entrapment phase, wherein the physical entrapment phase is dispersible in the target medium. Accordingly, the compositions of the present invention physically prevent the agglomeration or self-association of the characteristic use particles. Also disclosed are processes for manufacturing compositions that are capable of being dispersed in a target medium.

    摘要翻译: 本发明提供能够分散在靶介质中的组合物。 所述组合物包括捕获在物理捕获相中的特征性使用颗粒,其中物理捕获相可分散在目标培养基中。 因此,本发明的组合物物理地防止了特征用颗粒的聚集或自相结合。 还公开了能够分散在目标介质中的组合物的制造方法。

    Physical methods of dispersing characteristic use particles and compositions thereof
    10.
    发明授权
    Physical methods of dispersing characteristic use particles and compositions thereof 有权
    分散特征使用颗粒及其组合物的物理方法

    公开(公告)号:US06911488B2

    公开(公告)日:2005-06-28

    申请号:US10177893

    申请日:2002-06-21

    摘要: The present invention provides compositions that are capable of being dispersed in a target medium. The compositions include characteristic use particles entrapped within a physical entrapment phase, wherein the physical entrapment phase is dispersible in the target medium. Accordingly, the compositions of the present invention physically prevent the agglomeration or self-association of the characteristic use particles. Also disclosed are processes for manufacturing compositions that are capable of being dispersed in a target medium.

    摘要翻译: 本发明提供能够分散在靶介质中的组合物。 所述组合物包括捕获在物理捕获相中的特征性使用颗粒,其中物理捕获相可分散在目标培养基中。 因此,本发明的组合物物理地防止特征用颗粒的聚集或自结合。 还公开了能够分散在目标介质中的组合物的制造方法。