Mixtures of fluoropolymer dispersions
    3.
    发明授权
    Mixtures of fluoropolymer dispersions 失效
    含氟聚合物分散体的混合物

    公开(公告)号:US06660798B1

    公开(公告)日:2003-12-09

    申请号:US09588625

    申请日:2000-06-07

    IPC分类号: C08K300

    摘要: Mixtures of fluoropolymer dispersions comprising: a) one or more dispersions constituted by TFE homopolymers or by its copolymers with particle average sizes ranging from 180 to 400 nm; b) one or more TFE copolymer dispersions with one or more monomers containing at least one ethylene unsaturation, the comonomer amount being such that the dispersion contains a number of fibrils lower than 10% of the total number of particles; said fibrils being polymer particles having a length/diameter (L/D) ratio higher than 5; the dispersion particle average sizes are smaller of about 90 nm; the component b) contains a comonomer amount such that the resulting polymer is not elastomeric and furthermore it shows composition and viscosity characteristics of the melt such as not to be thermoprocessable.

    摘要翻译: 含氟聚合物分散体的混合物包括:a)由TFE均聚物或其平均尺寸范围为180-400nm的共聚物制成的一种或多种分散体; b)一种或多种TFE共聚物分散体与一种或多种含有至少一个乙烯不饱和度的单体 共聚单体的量使得分散体含有低于总颗粒数的10%的多个原纤维; 所述原纤维是长度/直径(L / D)比高于5的聚合物颗粒; 分散颗粒的平均尺寸小于约90nm; 组分b)包含共聚单体的量,使得所得聚合物不是弹性体,此外它显示熔体的组成和粘度特性,例如不是热可加工的。

    Process for the protection of stony or coating surfaces
    6.
    发明授权
    Process for the protection of stony or coating surfaces 失效
    保护石块或涂层表面的工艺

    公开(公告)号:US5948478A

    公开(公告)日:1999-09-07

    申请号:US638135

    申请日:1996-04-26

    IPC分类号: C08G65/00 C09D171/02 B05D3/02

    CPC分类号: C08G65/007 C09D171/02

    摘要: A method of protecting objects from graffiti using fluorinated polymers based on fluoropolyethers in a dry formulation wherein the fluorinated polymer includes a fluorinated part R.sub.F and optionally an hydrogenated part R.sub.H not containing groups capable of linking to basic acceptors by means of hydrogen bonds, the bonds linking the fluorinated part, derived from (per)fluoropolyethers, to the hydrogenated part being of simple C--O ether type, the T' terminal groups being such as to render the structure bi- or polyfunctional thus making possible the curing reaction, and subsequent curing of the fluorinated polymer.

    摘要翻译: 一种在干燥制剂中使用基于氟聚醚的氟化聚合物保护物体免受涂鸦的方法,其中氟化聚合物包括氟化部分RF和任选的氢化部分RH,其不含能够通过氢键连接到碱性受体的基团,所述键连接 衍生自(全)氟代聚醚的氟化部分到氢化部分为简单的CO醚型,T'端基团使结构双官能或多官能化,从而使固化反应成为可能,随后固化 氟化聚合物。

    Process for the production of a composite material based on a polymer
matrix
    8.
    发明授权
    Process for the production of a composite material based on a polymer matrix 失效
    用于生产基于聚合物基质的复合材料的方法

    公开(公告)号:US4798854A

    公开(公告)日:1989-01-17

    申请号:US19255

    申请日:1987-02-26

    CPC分类号: C08J3/215 C08F6/22

    摘要: Process for the production of a composite material based on a polymer matrix comprising homogeneously dispersed therein an organic and/or inorganic filler, said process consisting in mixing together the aqueous dispersions of the single components, in which the dispersed particles of the dispersion have a surface charge of the same sign and a "zeta potential" between 10 and 100mV (in absolute value) and wherein the ratio (in absolute value) between the "zeta potentials" of the particles of each dispersion is between 0.2 and 5.

    摘要翻译: 用于生产基于包含均匀分散有有机和/或无机填料的聚合物基质的复合材料的方法,所述方法包括将单一组分的水分散体混合在一起,其中分散体的分散颗粒具有表面 相同符号的电荷和10和100mV(绝对值)之间的“ζ电位”,并且其中每个分散体的颗粒的“ζ电位”之间的比率(绝对值)在0.2和5之间。

    Fluoropolymer dispersions
    10.
    发明授权
    Fluoropolymer dispersions 失效
    含氟聚合物分散体

    公开(公告)号:US06518352B1

    公开(公告)日:2003-02-11

    申请号:US09343238

    申请日:1999-06-30

    IPC分类号: C08L2700

    摘要: Mixtures of fluoropolymer dispersion, wherein: a) a dispersion is formed by TFE (co)polymers with average particle sizes in the range 180-400 nm; b) another dispersion selected from: 1) (co)polymer dispersion of TFE; 2) thermoplastic copolymers of TFE; the average particle sizes of dispersion b) range from 20 to 60 nm; the ratio between the particle sizes of dispersion b) compared with those of dispersion a) is lower than 0.3.

    摘要翻译: 氟聚合物分散体的混合物,其中:a)通过TFE(共)聚合物形成分散体,平均粒径在180-400nm范围内; b)选自以下的另一种分散体:1)TFE的(共)聚合物分散体; 2) TFE的热塑性共聚物;分散体b)的平均粒径为20〜60nm,分散体b)的粒径与分散体a)的比例小于0.3。