Blended fluoropolymer compositions
    2.
    发明授权
    Blended fluoropolymer compositions 有权
    混合的含氟聚合物组合物

    公开(公告)号:US08691344B2

    公开(公告)日:2014-04-08

    申请号:US12468580

    申请日:2009-05-19

    IPC分类号: B05D3/02

    摘要: Blended fluoropolymer compositions are provided. In one embodiment, a liquid dispersion of a first fluoropolymer is blended with a liquid dispersion of a second fluoropolymer. The first fluoropolymer may be polytetrafluoroethylene (PTFE), such as a low molecular weight PTFE (LPTFE) that has been polymerized via a dispersion or emulsion polymerization process, and which has not been agglomerated, irradiated, or thermally degraded. The LPTFE may be in the form of an aqueous dispersion, having a mean particle size of less than 1.0 microns (μm), with the LPTFE having a first melt temperature (Tm) of 332° C. or less. The second fluoropolymer may be a melt processible fluoropolymer (MPF), such as methylfluoroalkoxy (MFA), fluorinated ethylene propylene (FEP), or perfluoroalkoxy (PFA), for example, in the form of an aqueous dispersion, and having a mean particle size of less than 1.0 microns (μm). Blending of the dispersions facilitates interaction of the LPTFE and MPF on a submicron level to facilitate intimate blending such that, when the blended fluoropolymer composition is dried, a crystal structure representing a true alloy of the fluoropolymers is formed, having melt characteristics that differ from those of the individual fluoropolymers. The blended fluoropolymer composition may be used to provide a coating having improved impermeability, stain resistance, abrasion resistance, smoothness, and higher contact angles.

    摘要翻译: 提供混合的含氟聚合物组合物。 在一个实施方案中,将第一含氟聚合物的液体分散体与第二含氟聚合物的液体分散体共混。 第一含氟聚合物可以是聚四氟乙烯(PTFE),例如已经通过分散体或乳液聚合方法聚合并且未被聚集,照射或热降解的低分子量PTFE(LPTFE)。 LPTFE可以是水分散体的形式,其平均粒度小于1.0微米(μm),LPTFE的第一熔融温度(Tm)为332℃或更低。 第二含氟聚合物可以是可熔融加工的含氟聚合物(MPF),例如甲基氟代烷氧基(MFA),氟化乙烯丙烯(FEP)或全氟烷氧基(PFA),例如以水分散体的形式,并且具有平均粒径 小于1.0微米(μm)。 分散体的混合促进了LPTFE和MPF在亚微米级的相互作用,以促进紧密共混,使得当混合的含氟聚合物组合物被干燥时,形成表示含氟聚合物的真正合金的晶体结构,其熔体特性与那些 的各种含氟聚合物。 混合的含氟聚合物组合物可用于提供具有改进的不渗透性,耐污性,耐磨性,光滑度和更高接触角的涂层。

    BLENDED FLUOROPOLYMER COMPOSITIONS
    3.
    发明申请
    BLENDED FLUOROPOLYMER COMPOSITIONS 有权
    混合氟聚合物组合物

    公开(公告)号:US20120076944A1

    公开(公告)日:2012-03-29

    申请号:US13296752

    申请日:2011-11-15

    摘要: Blended fluoropolymer compositions are provided, in which a liquid dispersion of a first fluoropolymer is blended with a liquid dispersion of a second fluoropolymer. The first fluoropolymer may be polytetrafluoroethylene (PTFE), such as a low molecular weight PTFE (LPTFE) in the form of an aqueous dispersion having a mean particle size of less than 1.0 microns (μm) and a first melt temperature (Tm) of 332° C. or less. The second fluoropolymer may be a melt processible fluoropolymer (MPF), such as methylfluoroalkoxy (MFA), fluorinated ethylene propylene (FEP), or perfluoroalkoxy (PFA), for example, in the form of an aqueous dispersion having a mean particle size of less than 1.0 microns (μm). When the blended fluoropolymer composition is dried, a crystal structure representing a true alloy of the fluoropolymers is formed, having melt characteristics that differ from those of the individual fluoropolymers.

    摘要翻译: 提供了混合的含氟聚合物组合物,其中第一含氟聚合物的液体分散体与第二含氟聚合物的液体分散体共混。 第一含氟聚合物可以是聚四氟乙烯(PTFE),例如水分散体形式的低分子量PTFE(LPTFE),其平均粒度小于1.0微米(μm),第一熔融温度(Tm)为332 ℃以下。 第二含氟聚合物可以是可熔融加工的含氟聚合物(MPF),例如甲基氟代烷氧基(MFA),氟化乙烯丙烯(FEP)或全氟烷氧基(PFA),例如具有平均粒度较小的水分散体形式 大于1.0微米(μm)。 当混合的含氟聚合物组合物被干燥时,形成表示含氟聚合物的真正合金的晶体结构,其熔体特性与单独的含氟聚合物的熔体特性不同。

    Method of treating fluoropolymer particles and the products thereof
    4.
    发明授权
    Method of treating fluoropolymer particles and the products thereof 有权
    氟聚合物颗粒及其制品的处理方法

    公开(公告)号:US07811631B2

    公开(公告)日:2010-10-12

    申请号:US11463498

    申请日:2006-08-09

    IPC分类号: B05D7/00

    摘要: Fluoropolymer particles are subjected to high energy treatment so as to change the chemical functionality of the particle surfaces and thereby change the surface characteristics of the particles. These characteristics improve the usefulness of these particles and can make them highly dispersible, even in water. The surface treated fluoropolymer particles are subject to a chemical crosslinking process, or alternatively, are subject to a high energy treatment process, and may optionally be pretreated with a macromolecular chemical species prior to the foregoing processes. The high energy treatment can be used to both surface treat the fluoropolymer particles and in some embodiments, may also cause chain scission of the fluoropolymers to thereby reduce the molecular weight of the fluoropolymer particles. The surface treated fluoropolymer particles can be used to form fluoropolymer coatings on various substrates.

    摘要翻译: 对含氟聚合物颗粒进行高能量处理,以改变颗粒表面的化学官能度,从而改变颗粒的表面特性。 这些特性提高了这些颗粒的有用性,并使其高度分散,甚至在水中。 表面处理的含氟聚合物颗粒经历化学交联过程,或者可以进行高能量处理工艺,并且可以任选地在上述方法之前用大分子化学物质进行预处理。 高能量处理可以用于表面处理含氟聚合物颗粒,并且在一些实施方案中,还可能引起含氟聚合物的链断裂,从而降低含氟聚合物颗粒的分子量。 表面处理的含氟聚合物颗粒可用于在各种基材上形成含氟聚合物涂层。

    METHOD OF TREATING FLUOROPOLYMER PARTICLES AND THE PRODUCTS THEREOF
    6.
    发明申请
    METHOD OF TREATING FLUOROPOLYMER PARTICLES AND THE PRODUCTS THEREOF 有权
    处理氟聚合物颗粒的方法及其制备方法

    公开(公告)号:US20070059445A1

    公开(公告)日:2007-03-15

    申请号:US11463498

    申请日:2006-08-09

    IPC分类号: B05D7/00 B29C71/04

    摘要: Fluoropolymer particles are subjected to high energy treatment so as to change the chemical functionality of the particle surfaces and thereby change the surface characteristics of the particles. These characteristics improve the usefulness of these particles and can make them highly dispersible, even in water. The surface treated fluoropolymer particles are subject to a chemical crosslinking process, or alternatively, are subject to a high energy treatment process, and may optionally be pretreated with a macromolecular chemical species prior to the foregoing processes. The high energy treatment can be used to both surface treat the fluoropolymer particles and in some embodiments, may also cause chain scission of the fluoropolymers to thereby reduce the molecular weight of the fluoropolymer particles. The surface treated fluoropolymer particles can be used to form fluoropolymer coatings on various substrates.

    摘要翻译: 对含氟聚合物颗粒进行高能量处理,以改变颗粒表面的化学官能度,从而改变颗粒的表面特性。 这些特性提高了这些颗粒的有用性,并使其高度分散,甚至在水中。 表面处理的含氟聚合物颗粒经历化学交联过程,或者可以进行高能量处理工艺,并且可以任选地在上述方法之前用大分子化学物质进行预处理。 高能量处理可以用于表面处理含氟聚合物颗粒,并且在一些实施方案中,还可能引起含氟聚合物的链断裂,从而降低含氟聚合物颗粒的分子量。 表面处理的含氟聚合物颗粒可用于在各种基材上形成含氟聚合物涂层。

    Thermoformable acoustic product
    7.
    发明申请
    Thermoformable acoustic product 审中-公开
    可热成型声学产品

    公开(公告)号:US20060090958A1

    公开(公告)日:2006-05-04

    申请号:US11210462

    申请日:2005-08-24

    IPC分类号: E04B1/82

    CPC分类号: G10K11/168 G10K11/162

    摘要: A thermo-formed acoustic product formed from an acoustic sheet with a relatively high flow resistance, and a layer of porous flow resistive spacer material attached to one side of the acoustic sheet and having a flow resistance substantially smaller than the acoustic sheet. The acoustic product has locally reactive acoustic behavior and an overall air flow resistance of between 2800 Rayls and 8000 Rayls. A decorative facing can be applied to the acoustic sheet.

    摘要翻译: 由具有较高流动阻力的声学薄片形成的热成形声学产品和附着在声学片的一侧上并且具有显着小于声学薄片的流动阻力的多孔流动电阻隔离材料层。 声学产品具有局部反应性声学行为和2800雷尔至8000雷斯之间的总体气流阻力。 装饰面可以应用于声学片。

    Surface-treating fluoropolymer powders using atmospheric plasma
    8.
    发明授权
    Surface-treating fluoropolymer powders using atmospheric plasma 失效
    使用大气等离子体表面处理含氟聚合物粉末

    公开(公告)号:US06824872B2

    公开(公告)日:2004-11-30

    申请号:US10128185

    申请日:2002-04-23

    IPC分类号: B32B566

    摘要: Fluoropolymer powder particles which are surface treated so as to change the chemical functionality on their surfaces which in turn changes the surfaces characteristics. These characteristics improve the usefulness of these powders and can make them wettable. The surface treated fluoropolymer particles are subject to an atmospheric plasma treatment process, and preferably pretreated with a macromolecular chemical species prior to the atmospheric plasma treatment. The atmospheric plasma treatment enhances adhesion to the powder surface and can also enhance cross-linking of the macromolecular chemical species. The surface treated fluoropolymer powders can be used to form fluoropolymer coatings on various substrates.

    摘要翻译: 表面处理以改变其表面上的化学官能度的氟聚合物粉末颗粒,其又改变表面特性。 这些特性提高了这些粉末的用途,并使它们变湿。 表面处理的含氟聚合物颗粒经受大气等离子体处理工艺,优选在大气等离子体处理之前用大分子化学物质预处理。 大气等离子体处理提高了与粉末表面的粘附性,并且还可以增强大分子化学物质的交联。 表面处理的含氟聚合物粉末可用于在各种基材上形成氟聚合物涂层。

    Compatible blends of polyvinylidene fluoride and aromatic polyimide
    9.
    发明授权
    Compatible blends of polyvinylidene fluoride and aromatic polyimide 有权
    聚偏二氟乙烯和芳族聚酰亚胺的兼容混合物

    公开(公告)号:US06313222B1

    公开(公告)日:2001-11-06

    申请号:US09410796

    申请日:1999-10-01

    IPC分类号: C08L7908

    摘要: A miscible polymer blend of superior mechanical strength, hardness and abrasion or mar resistance comprising PVDF and at least one compatible aromatic polyimide. The aromatic polyimide in the miscible polymer blend acts as a nucleating agent for PVDF crystallization. The miscible polymer blend comprising PVDF and aromatic polyimide does not exhibit the negative characteristic of reduced mechanical strength encountered in PVDF and polymer alloys known in the art. The PVDF/aromatic polyimide alloy is prepared by dissolving, separately, PVDF and the aromatic polyimide in a solvent and blending the solutions to form the required composition.

    摘要翻译: 具有卓越的机械强度,硬度和磨损或耐磨性的可混溶聚合物共混物,包括PVDF和至少一种相容的芳族聚酰亚胺。 可混溶聚合物共混物中的芳族聚酰亚胺作为PVDF结晶的成核剂。 包含PVDF和芳族聚酰亚胺的混溶性聚合物共混物不表现出本领域已知的PVDF和聚合物合金中遇到的机械强度降低的负面特征。 通过将PVDF和芳族聚酰亚胺分别溶解在溶剂中并混合溶液以形成所需的组合物来制备PVDF /芳族聚酰亚胺合金。