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1. 发明授权

US5718833A Fluorine-based magnetic fluid 失效
标题翻译：氟基磁性液体
公开(公告)号：US5718833A
公开(公告)日：1998-02-17
申请号：US784693
申请日：1997-01-15
申请人： Yasushi Yamamoto , Yoshiyuki Takeishi , Yutaka Kouda , Tomoko Minagawa , Takao Kanno
发明人： Yasushi Yamamoto , Yoshiyuki Takeishi , Yutaka Kouda , Tomoko Minagawa , Takao Kanno
IPC分类号： C07C59/135 , C08G65/22 , H01F1/44
CPC分类号： H01F1/44 , C07C59/135 , C08G65/226
摘要： A fluorine-based magnetic fluid, which comprises (A) fine magnetic particles as dispersed in (D) a perfluoropolyether base oil represented by the following general formula: F�CF(CF.sub.3)CF.sub.2 O!mRf where Rf is a perfluoroalkyl group, by means of (B) a salt of perfluoroether carboxylic acid represented by the following general formula: F�CF(CF.sub.3)CF.sub.2 O!nCF(CF.sub.3)COOM where M is an alkali metal or an ammonium group, and (C) amide compounds of perfluoroether carboxylic acid represented by the following general formula: F�CF(CF.sub.3)CF.sub.2 O!pCF(CF.sub.3)CONH(CH.sub.2)qNH.sub.2, F�CF(CF.sub.3)CF.sub.2 O!pCF(CF.sub.3)CONH(CH.sub.2 CH.sub.2 NH)rH or F�CF(CF.sub.3)CF.sub.2 O!pCF(CF.sub.3)CONH(CH.sub.2 CH.sub.2 NH)rCOCF(CF.sub.3)�OCF.sub.2 CF(CF.sub.3)!pF has a high affinity of the fine magnetic particles toward the perfluoropolyether base oil and is effectively used as a sealing material for vacuum apparatus.
摘要翻译：氟系磁性流体，其包含（A）分散在（D）由以下通式表示的全氟聚醚基油中的微细磁性颗粒：F [CF（CF 3）CF 2 O] m R f其中R f为全氟烷基（B）由以下通式表示的全氟醚羧酸盐：F [CF（CF 3）CF 2 O] n CF（CF 3）COOM，其中M是碱金属或铵基，和（C）全氟醚羧酸的酰胺化合物由CF（CF 3）CF 2 O] pCF（CF 3）CONH（CH 2）q NH 2，F [CF（CF 3）CF 2 O] p CF（CF 3）CONH（CH 2 CH 2 NH）r H或F [CF（CF 3） CF 2 O] p CF（CF 3）CONH（CH 2 CH 2 NH）rCOCF（CF 3）[OCF 2 CF（CF 3）] pF具有高精细磁性颗粒对全氟聚醚基油的亲和力，并被有效地用作真空装置的密封材料。

2. 发明授权

US5785882A Fluorine-based magnetic fluid 失效
标题翻译：氟基磁性液体
公开(公告)号：US5785882A
公开(公告)日：1998-07-28
申请号：US901359
申请日：1997-07-28
申请人： Yasushi Yamamoto , Yoshiyuki Takeishi , Yutaka Kouda , Tomoko Minagawa , Takao Kanno
发明人： Yasushi Yamamoto , Yoshiyuki Takeishi , Yutaka Kouda , Tomoko Minagawa , Takao Kanno
IPC分类号： H01F1/44
CPC分类号： H01F1/44 , H01F1/445
摘要： A fluorine-based magnetic fluid, which comprises (A) fine magnetic particles as dispersed in (D) a perfluoropolyether base oil represented by the following general formula: F�CF(CF.sub.3)CF.sub.2 O!mRf where Rf is a perfluoroalkyl group by means of general formulae: (B.sub.1){F�CF(CF.sub.3)CF.sub.2 O!nCF(CF.sub.2) (Y)v(R)wO}tPO(OM)u, (B.sub.2)F�CF(CF.sub.3)CF.sub.2 O!nCF(CF.sub.3)YRSO.sub.2 M or (B.sub.3)F�CF(CF.sub.3)CF.sub.2 O!nCF(CF.sub.3)X(RO)sCH.sub.2 COOM where R is a divalent organic group; Y is a COO group or CONH group; X is a COO group or CH.sub.2 O group; and M is a hydrogen group, an alkali metal, an alkaline earth metal or an ammonium group and perfluoroether carboxylic acid amide compounds represented by the following general formulae: (C.sub.1)F�CF(CF.sub.3)CF.sub.2 O!pCF(CF.sub.3)CONH(CH.sub.2)qNH.sub.2, (C.sub.2)F�CF(CF.sub.3)CF.sub.2 O!pCF(CF.sub.3)CONH(CH.sub.2 CH.sub.2 NH)rHor (C.sub.3)F�CF(CF.sub.3)CF.sub.2 O!pCF(CF.sub.3)CONH(CH.sub.2 CH.sub.2 NH)rCOCF(CF.sub.3)�OCF.sub.2 CF(CF.sub.2 )!pF has an increased affinity of the fine magnetic particles toward the perfluoropolyether base oil and is effectively used as a sealing material for vacuum apparatus.
摘要翻译：氟系磁性流体，其包含（A）分散在（D）由以下通式表示的全氟聚醚基油中的细磁性颗粒：F [CF（CF 3）CF 2 O] m R f其中R f是全氟烷基，通过通式（B1）{F [CF（CF3）CF2O] nCF（CF2）（Y）v（R）wO} tPO（OM）u，（B2）F [CF（CF3）CF2O] nCF（CF3）或（B3）F [CF（CF 3）CF 2 O] n CF（CF 3）X（RO）s CH 2 COOM，其中R是二价有机基团; Y是COO组或CONH组; X是COO基团或CH 2 O基团; （C1）F [CF（CF3）CF2O] pCF（CF3）CONH（CH2）的化合物，M为氢基，碱金属，碱土金属或铵基，全氟醚羧酸酰胺化合物）CF（CF 3）CONH（CH 2 CH 2 NH）r COCF（CF 3）[OCF 2 CF（CF 3）CF 2 CF 2 CF 2 CF 2） CF2）] pF具有增加的细磁粒子对全氟聚醚基油的亲和性，并且有效地用作真空装置的密封材料。

3. 发明授权

US5738802A Fluorine-based magnetic fluid 失效
标题翻译：氟基磁性液体
公开(公告)号：US5738802A
公开(公告)日：1998-04-14
申请号：US800784
申请日：1997-02-14
申请人： Yasushi Yamamoto , Yoshiyuki Takeishi , Yutaka Kouda , Tomoko Minagawa , Takao Kanno
发明人： Yasushi Yamamoto , Yoshiyuki Takeishi , Yutaka Kouda , Tomoko Minagawa , Takao Kanno
IPC分类号： C07C59/135 , C08G65/22 , C08G65/337 , C09K3/10 , H01F1/44
CPC分类号： C08G65/337 , C07C59/135 , C08G65/226 , C09K3/1009 , H01F1/44 , H01F1/445
摘要： A fluorine-based magnetic fluid, which comprises (A) fine magnetic particles dispersed in (D) a perfluoropolyether base oil represented by the following general formula: F(CF(CF.sub.3)CF.sub.2 O).sub.m Rf where Rf is a perfluoroalkyl group, by means of (B) a perfluoroether carboxylic acid or salt thereof represented by the following general formula: F(CF(CF.sub.3)CF.sub.2 O).sub.n CF(CF.sub.3)COOM where M is a hydrogen atom, an alkali metal or an ammonium group, and (C) a perfluoroether compound represented by the following general formula: F(CF(CF.sub.3)CF.sub.2 O).sub.p CF(CF.sub.3)X(RO).sub.q CH.sub.2 COOM', F(CF(CF.sub.3)CF.sub.2 O).sub.p CF(CF.sub.3)(Y).sub.r R'OSO.sub.3 M' or (F(CF(CF.sub.3)CF.sub.2 O).sub.p CF(CF.sub.3)(Y).sub.v (R).sub.w O).sub.t PO(OM').sub.u. Fluorine-based magnetic fluid has a high affinity of the fine magnetic particles toward the perfluoropolyether base oil and is effectively used as a sealing material for vacuum apparatus.
摘要翻译：氟系磁性流体，其包含（A）分散在（D）由以下通式表示的全氟聚醚基油中的细磁性颗粒：F（CF（CF 3）CF 2 O）m R f其中Rf是全氟烷基，通过（ B）由以下通式表示的全氟醚羧酸或其盐：F（CF（CF 3）CF 2 O）n CF（CF 3）COOM其中M是氢原子，碱金属或铵基，和（C）全氟醚化合物由（CF（CF 3）CF 2 O）p CF（CF 3）X（RO）q CH 2 COOM'，F（CF（CF 3）CF 2 O）p CF（CF 3）（Y）r R'OSO 3 M'或（F （CF 3）CF 2 O）pCF（CF 3）（Y）v（R）w O）t PO（OM'）u。基于氟的磁性流体具有高的细磁粒子对全氟聚醚基油的亲和力，真空设备用密封材料。

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