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    • 3. 发明申请
    • METHOD OF MANUFACTURING CYCLOPHOSPHAZENE DERIVATIVES
    • 制备环磷酰胺衍生物的方法
    • US20160130289A1
    • 2016-05-12
    • US14896048
    • 2014-06-03
    • SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
    • Roberto VALSECCHIRosaldo PICOZZIPier Antonio GUARDA
    • C07F9/6593C10M105/74
    • C07F9/65815C07F9/65812C07F9/65817C08G65/007C08G65/3356C08G65/337C10M105/74G11B5/725
    • A method of manufacturing cyclophosphazenes PFPE derivatives to be used in the lubrication of magnetic recording media is herein provided. The method comprises: a) a (per)fluoropolyether (PFPE) polyol [PFPE (Ppol)] comprising a fluoropolyoxyalkylene chain (Rf) having two chain ends, each chain end comprising at least one hydroxy group, and b) the corresponding alkoxide of perfluoropolyether (Ppol) [PFPE (Palk)] wherein the equivalent concentration of PFPE (Palk) in PFPE (Ppol) is lower than 30%, preferably ranging from 5% to 15%; 2) contacting mixture (M) with a perhalocyclophosphazene (CPhalo) to provide a mixture (M1) containing an equivalent ratio of PFPE (Palk)/(CPhalo) of at least 1; 3) allowing mixture (M1) to react until complete disappearance of P—Cl groups to provide a mixture (M2); 4) submitting mixture (M2) to hydrolysis to provide a mixture (M3); 5) optionally removing (Ppol) from mixture (M3) to provide a mixture (M4). A method of purifying mixture (M4) is also herein provided.
    • 本文提供了制造用于润滑磁记录介质的环磷腈PFPE衍生物的方法。 该方法包括:a)包含具有两个链端的氟聚氧化烯链(Rf)的(全)氟聚醚(PFPE)多元醇[PFPE(Ppol)],每个链端包含至少一个羟基,和b)相应的醇盐 全氟聚醚(Ppol)[PFPE(Palk)],其中PFPE(Ppol)中PFPE(Palk)的当量浓度低于30%,优选5%至15%; 2)使混合物(M)与全卤代环丙腈(CPhalo)接触,以提供含有至少1的PFPE(Palk)/(CPalO)的当量比的混合物(M1) 3)允许混合物(M1)反应直到P-Cl基团完全消失以提供混合物(M2); 4)将混合物(M2)进行水解以提供混合物(M3); 5)任选地从混合物(M3)中除去(Ppol)以提供混合物(M4)。 还提供了一种纯化混合物(M4)的方法。