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    PROCESS FOR THE EMULSION POLYMERIZATION OF FREE-RADICALLY POLYMERIZABLE, ETHYLENICALLY UNSATURATED MONOMERS
    61.
    发明申请
    PROCESS FOR THE EMULSION POLYMERIZATION OF FREE-RADICALLY POLYMERIZABLE, ETHYLENICALLY UNSATURATED MONOMERS 审中-公开
    无机聚合的无定形非均匀不饱和单体的乳液聚合方法

    公开(公告)号：US20170029544A1

    公开(公告)日：2017-02-02

    申请号：US15302811

    申请日：2015-04-08

    Applicant: CELANESE SALES GERMANY GMBH

    Inventor： Harmin MUELLER ,  Stefan NOGAI ,  Alexander MADL ,  Harald PETRI ,  Elmar LINNEMANN ,  Frank SCHUSTER ,  Stephan KRIEGER ,  Kerstin GOHR

    IPC: C08F218/08 ,  C08L31/04

    CPC classification number: C08F218/08 ,  C08F2/22 ,  C08F2/26 ,  C08L31/04 ,  C08L2201/50 ,  C08F210/02 ,  C08F2220/325

    Abstract: The present invention relates to a process for the emulsion polymerization of free-radically polymerizable, ethylenically unsaturated main monomers, and optionally further auxiliary monomers copolymerizable therewith, wherein the polymerization comprises a polymerization reaction phase starting with the first addition of an initiator or starting with the first addition of monomers, whatever is later, and ending with the completion of the addition of the initiator or the completion of the addition of total monomers, whatever is later, wherein the reaction temperature is increased during said polymerization reaction phase from a start temperature in the range of about 30° C. to about 85° C. to an end temperature in the range of about 60° C. to about 160° C., and wherein the polymerization temperature is increased for at least 25% of the duration of said polymerization reaction phase. The present invention further relates to an aqueous (co) polymer dispersion comprising at least one (co)polymer obtained by said process, and the use of this aqueous (co)polymer dispersion.

    Abstract translation: 本发明涉及一种可自由基聚合的烯键式不饱和主要单体和任选的可与其共聚的其它辅助单体的乳液聚合方法，其中聚合反应包含一个聚合反应相，从第一次加入引发剂开始，或从 首先加入单体，无论以后如何，随后完成添加引发剂或完成添加总单体，无论以后如何，其中反应温度在所述聚合反应阶段从起始温度 约30℃至约85℃的范围至约60℃至约160℃范围内的终止温度，并且其中聚合温度增加至少25％的持续时间 所述聚合反应相。 本发明还涉及包含由所述方法获得的至少一种（共）聚合物的水性（共）聚合物分散体，以及该水性（共）聚合物分散体的用途。

    Blended fluoropolymer compositions
    67.
    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

    Applicant: Leonard W. Harvey ,  Michael Coates ,  Julie K. Wright

    Inventor： Leonard W. Harvey ,  Michael Coates ,  Julie K. Wright

    IPC: B05D3/02

    CPC classification number: C08L27/18 ,  C08J3/005 ,  C08J3/12 ,  C08J2327/18 ,  C08L27/12 ,  C08L27/24 ,  C08L29/10 ,  C08L2201/50 ,  C08L2205/02 ,  C08L2205/025 ,  C09D5/03 ,  C09D127/12 ,  C09D127/18 ,  C09D129/10 ,  Y10T428/2982 ,  C08L2666/04

    Abstract: 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.

    Abstract translation: 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。

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