Thermally stable perfluoropolyethers and processes therefor and therewith
    4.
    发明申请
    Thermally stable perfluoropolyethers and processes therefor and therewith 有权
    热稳定的全氟聚醚及其工艺及其

    公开(公告)号:US20030027732A1

    公开(公告)日:2003-02-06

    申请号:US09901975

    申请日:2001-07-10

    Abstract: A perfluoropolyether, a composition comprising the perfluoropolyether, a process for producing the perfluoropolyether, and a process for improving the thermostability of grease or lubricant are provided. The perfluoropolyether comprises perfluoroalkyl radical end groups in which the radical has at least 3 carbon atoms per radical and is substantially free of perfluoromethyl and perfluoroethyl end groups. The process for producing the perfluoropolyether can comprise (1) contacting a perfluoro acid halide, a C2- to C4-substituted ethyl epoxide, or a C3null fluoroketone with a metal halide to produce an alkoxide; (2) contacting the alkoxide with either hexafluoropropylene oxide or tetrafluorooxetane to produce a second acid halide; (3) esterifying the second acid halide to an ester; (4) reducing the ester to its corresponding alcohol; (5) converting the alcohol with a base to a salt form; (6) contacting the salt form with a C3 or higher olefin to produce a fluoropolyether; and (7) fluorinating the fluoropolyether. The process for improving the thermostability of a grease or lubricant comprises combining the grease or lubricant with the composition.

    Abstract translation: 提供全氟聚醚,包含全氟聚醚的组合物,制备全氟聚醚的方法以及改善润滑脂或润滑剂的热稳定性的方法。 全氟聚醚包括全氟烷基自由基端基,其中基团每个基团具有至少3个碳原子,并且基本上不含全氟甲基和全氟乙基端基。 制备全氟聚醚的方法可以包括(1)使全氟酰卤,C 2 -C 4取代的乙基环氧化物或C 3+氟代酮与金属卤化物接触以产生醇盐; (2)使醇盐与六氟环氧丙烷或四氟氧杂环丁烷接触以产生第二种酰卤; (3)将第二酰卤酯化为酯; (4)将酯还原成相应的醇; (5)将醇与碱转化为盐形式; (6)使盐形式与C3或更高级烯烃接触以产生含氟聚醚; 和(7)氟化聚醚醚。 用于改善润滑脂或润滑剂的热稳定性的方法包括将润滑脂或润滑剂与组合物组合。

    Composition comprising halogenated oil
    5.
    发明申请
    Composition comprising halogenated oil 有权
    包含卤代油的组合物

    公开(公告)号:US20030013617A1

    公开(公告)日:2003-01-16

    申请号:US09894112

    申请日:2001-06-28

    Abstract: A composition that can be used as lubricant for high electric field including spark plug boots is disclosed. The composition comprises, or is produced by combining, a halogenated oil such as a perfluoropolyether, a polytrichlorofluoroethylene, a fluorosilicone, or combinations of two or more thereof; a basic thickener; and optionally an additional thickener in which the basic thickener is a metal hydroxide, a metal salt, an ammonium salt, or combinations of two or more thereof. The optional additional thickener is polytetrafluoroethylene, talc, silica, clay, boron nitride, metal soaps, titanium dioxide, polydimethylsiloxane, polyurea, polyurethane, or combinations of two or more thereof. Also provided is a spark plug boot that comprises the composition applied thereto.

    Abstract translation: 公开了可用作包括火花塞靴的高电场润滑剂的组合物。 该组合物包含或通过组合卤代油如全氟聚醚,聚三氯氟乙烯,氟硅氧烷或其两种或更多种的组合来生产; 一种基础增稠剂 和任选的另外的增稠剂,其中碱性增稠剂是金属氢氧化物,金属盐,铵盐或其两种或更多种的组合。 任选的另外的增稠剂是聚四氟乙烯,滑石,二氧化硅,粘土,氮化硼,金属皂,二氧化钛,聚二甲基硅氧烷,聚脲,聚氨酯或其两种或更多种的组合。 还提供了包括施加到其上的组合物的火花塞靴。

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