Fluoroelastomers with improved permeation resistance and method for making the same
    5.
    发明授权
    Fluoroelastomers with improved permeation resistance and method for making the same 失效
    具有改善渗透阻力的氟弹性体及其制备方法

    公开(公告)号:US07148300B2

    公开(公告)日:2006-12-12

    申请号:US10659877

    申请日:2003-09-11

    IPC分类号: C08F116/12

    摘要: A compound is prepared, suitable for forming fluoroelastomers, having the unique features of a low glass transition temperature and desirable permeation resistance. The compound generally comprises two primary components. The first component is an amorphous copolymer including interpolymerized units derived from one or more perfluorinated ethers. The second component is a curable component including at least one filler having at least 10 parts per 100 parts of the first component. Upon vulcanization the resulting elastomeric compound has desirable physical characteristics as indicated by the durometer, the retraction at lower temperatures (TR-10) and permeation resistance.

    摘要翻译: 制备适合于形成含氟弹性体的化合物,其具有低玻璃化转变温度和所需渗透阻力的独特特征。 化合物通常包含两个主要组分。 第一组分是包含衍生自一种或多种全氟化醚的共聚单元的无定形共聚物。 第二组分是可固化组分,其包含至少一种每100份第一组分至少10份的填料。 硫化后,得到的弹性体化合物具有所需的物理特性,如硬度计所示,在较低温度下回缩(TR-10)和耐渗透性。

    Fluoropolymer nanoparticle coating composition
    7.
    发明授权
    Fluoropolymer nanoparticle coating composition 有权
    含氟聚合物纳米粒子涂料组合物

    公开(公告)号:US07638581B2

    公开(公告)日:2009-12-29

    申请号:US11305978

    申请日:2005-12-19

    IPC分类号: C08L27/12

    摘要: A fluoropolymer coating composition contains a homogeneous mixture of crystalline submicron fluoropolymer particles dispersed in a solvent-borne solution of less crystalline or amorphous fluororesin. The composition may be prepared by blending a latex containing crystalline submicron fluoropolymer particles with a latex containing less crystalline or amorphous fluororesin particles, coagulating and drying the blended latices, and dissolving the dried blend in a solvent for the fluororesin particles. Quasi-homogenous compositions may be prepared by blending dry crystalline submicron fluoropolymer particles with a) dry less crystalline or amorphous fluororesin particles and a solvent for the fluororesin particles, or b) a solvent-borne solution of less crystalline or amorphous fluororesin. Rubbing the disclosed coatings can provide a thin, continuous or nearly continuous fluoropolymer surface layer atop a less crystalline or amorphous fluororesin binder containing crystalline submicron fluoropolymer particles.

    摘要翻译: 氟聚合物涂料组合物含有分散在不太结晶或无定形氟树脂的溶剂型溶液中的结晶亚微米含氟聚合物颗粒的均匀混合物。 该组合物可以通过将含有结晶亚微米含氟聚合物颗粒的胶乳与含有较少结晶或无定形氟树脂颗粒的胶乳混合来制备,将混合的胶乳凝结并干燥,并将干燥的共混物溶解在氟树脂颗粒的溶剂中。 准均匀组合物可以通过将干结晶亚微米含氟聚合物颗粒与a)干结晶或无定形氟树脂颗粒和用于氟树脂颗粒的溶剂混合来制备,或b)不太结晶或无定形氟树脂的溶剂型溶液。 摩擦所公开的涂层可以在含有结晶亚微米含氟聚合物颗粒的较少结晶或无定形氟树脂粘合剂的顶部提供薄的,连续的或几乎连续的含氟聚合物表面层。