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    Thermally stable perfluoropolyethers and processes therefor and therewith
    355.
    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

    Inventor： Jon L. Howell ,  Erik William Perez ,  Alfred Waterfeld ,  Chadron Mark Friesen ,  Joseph Stuart Thrasher

    IPC: C10M101/00

    CPC classification number: C10M169/06 ,  C10M107/38 ,  C10M113/00 ,  C10M113/12 ,  C10M119/22 ,  C10M147/04 ,  C10M169/02 ,  C10M2201/00 ,  C10M2201/061 ,  C10M2201/0616 ,  C10M2201/105 ,  C10M2201/1056 ,  C10M2201/16 ,  C10M2201/18 ,  C10M2211/06 ,  C10M2213/00 ,  C10M2213/02 ,  C10M2213/023 ,  C10M2213/04 ,  C10M2213/043 ,  C10M2213/06 ,  C10M2213/0606 ,  C10M2213/0613 ,  C10M2213/062 ,  C10M2213/0623 ,  C10M2213/0626 ,  C10N2230/08 ,  C10N2240/12 ,  C10N2240/121 ,  C10N2250/10 ,  C10N2270/00

    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。

    Lubricant for refrigerators using ammonia refrigerant
    357.
    发明授权
    Lubricant for refrigerators using ammonia refrigerant 有权
    使用氨制冷剂的冰箱的润滑剂

    公开(公告)号：US06335311B1

    公开(公告)日：2002-01-01

    申请号：US09508961

    申请日：2000-03-20

    Applicant: Masato Namiki ,  Goro Yamamoto ,  Takashi Kaimai ,  Hitoshi Takahashi

    Inventor： Masato Namiki ,  Goro Yamamoto ,  Takashi Kaimai ,  Hitoshi Takahashi

    IPC: C10M14526

    CPC classification number: C10M171/008 ,  C10M107/34 ,  C10M2201/00 ,  C10M2201/061 ,  C10M2201/16 ,  C10M2201/18 ,  C10M2209/107 ,  C10N2220/02 ,  C10N2240/00 ,  C10N2240/22 ,  C10N2240/30 ,  C10N2240/50 ,  C10N2240/52 ,  C10N2240/54 ,  C10N2240/56 ,  C10N2240/58 ,  C10N2240/60 ,  C10N2240/66

    Abstract: To provide a polyalkylene glycol-based refrigerant oil for refrigerators using ammonia as a refrigerant. The present invention provides a lubricant for refrigerators using ammonia refrigerant, comprising polyethers selected from the group consisting of a polyether represented by the following general formula (1) X—{—O—(AO)n—H}p  (1) (wherein X is a residue of a monool or polyol from which a hydroxyl group is eliminated; (AO)n is a polyoxyalkylene group formed by copolymerization of EO and an AO having 3 or more carbon atoms; n is 2 or more; and p is a valence of X) and having 50% or more of secondary hydroxyl groups among the hydroxyl groups located at the terminal of the structure based on the total hydroxyl groups, or a polyether represented by the following general formula (2) X—{—O—(AO1)a—(AO2)b—H}p  (2) (wherein X is a residue of a monool or polyol from which a hydroxyl group is eliminated; (AO1)n is a polyoxyalkylene group formed by copolymerization of ethylene oxide and propylene oxide and/or butylene oxide; AO2 is an oxyalkylene group having 3 or more carbon atoms; a is 2 or more; b is 1 or more; and p is a valence of X).

    Abstract translation: 提供一种使用氨作为制冷剂的制冷剂的聚亚烷基二醇系冷冻机油。本发明提供一种使用氨制冷剂的制冷机的润滑剂，其包含选自下述通式（1）表示的聚醚的聚醚（其中， X是除去羟基的一元醇或多元醇的残基;（AO）n是通过EO和具有3个或更多个碳原子的AO的共聚形成的聚氧化烯基; n是2以上; p是 X的化合价），并且在基于全部羟基的结构的末端的羟基中具有50％以上的仲羟基，或由以下通式（2）表示的聚醚（其中X为残基 的一元醇或多元醇，其中羟基被除去;（AO1）n是通过环氧乙烷和环氧丙烷和/或环氧丁烷的共聚形成的聚氧化烯基团; AO2是氧化烯 具有3个以上碳原子的基团; a是2以上; b为1以上; 并且p是X的化合价）。

    Silicone grease composition
    360.
    发明授权
    Silicone grease composition 有权
    硅油组合物

    公开(公告)号：US06255257B1

    公开(公告)日：2001-07-03

    申请号：US09453469

    申请日：1999-12-02

    Applicant: Kunihiro Yamada ,  Takayuki Takahashi ,  Kenichi Isobe

    Inventor： Kunihiro Yamada ,  Takayuki Takahashi ,  Kenichi Isobe

    IPC: C10M10750

    CPC classification number: C10M169/02 ,  C10M169/00 ,  C10M2201/061 ,  C10M2201/0613 ,  C10M2201/062 ,  C10M2201/087 ,  C10M2201/10 ,  C10M2229/04 ,  C10M2229/0405 ,  C10N2210/02 ,  C10N2210/03 ,  C10N2220/021 ,  C10N2220/082 ,  C10N2240/00 ,  C10N2250/10

    Abstract: A silicone grease composition having high thermal conductivity, comprising (A) 50 to 95 weight % of a mixture of an aluminum nitride powder &agr; having an average particle size of 0.5 to 5 &mgr;m and an aluminum nitride powder &bgr; having an average particle size of 6 to 20 &mgr;m, wherein the aluminum nitride powders &agr; and &bgr; are mixed so that the &agr;/(&agr;+&bgr;) ratio by weight is from 0.1 to 0.9 and the average particle size after mixing is from 1 to 10 &mgr;m, (B) 5 to 15 weight % of organopolysiloxanes having a viscosity of from 50 to 50,000 cs at 25° C. and represented by formula R1aSiO(4−a)/2, wherein R1 represents at least one group selected from saturated or unsaturated univalent hydrocarbon groups containing 1 to 18 carbon atoms and 1.8≦a≦2.2, and (C) 0 to 35 weight % of at least one inorganic compound powder having an average particle size of 0.5 to 100 &mgr;m selected from the group consisting of zinc oxide, alumina, boron nitride and silicon carbide powders.

    Abstract translation: 一种具有高导热性的硅氧烷润滑脂组合物，其包含（A）50至95重量％的平均粒度为0.5至5μm的氮化铝粉末α和平均粒径为6的氮化铝粉末β的混合物 至20微米，其中将氮化铝粉末α和β混合，使得α/（α+β）重量比为0.1至0.9，混合后的平均粒度为1至10微米，（B）5 至15重量％的有机聚硅氧烷，其在25℃下具有50至50,000cs的粘度并由式R 1a SiO（4-a）/ 2表示，其中R 1表示选自饱和或不饱和的一价烃基中的至少一个基团， 至18个碳原子和1.8 <= a <= 2.2，和（C）0-35重量％的至少一种平均粒度为0.5-100微米的无机化合物粉末，选自氧化锌，氧化铝， 氮化硼和碳化硅粉末。

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