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    PROCESS FOR ENRICHING THE DIFUNCTIONAL CONTENT OF (PER) FLUOPOLYETHER MIXTURES
    1.
    发明申请
    PROCESS FOR ENRICHING THE DIFUNCTIONAL CONTENT OF (PER) FLUOPOLYETHER MIXTURES 有权
    （PER）氟代醇混合物的功能含量的方法

    公开(公告)号：US20140275635A1

    公开(公告)日：2014-09-18

    申请号：US14354424

    申请日：2012-10-23

    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

    Inventor： Claudio Adolfo Pietro Tonelli ,  Roberto Valsecchi ,  Fabrizio Mutta

    IPC: C08G65/48

    CPC classification number: C08G65/48 ,  C08G65/007 ,  C08G65/30 ,  C08G65/46 ,  Y02P20/544

    Abstract: The present invention relates to a process for increasing the content of bifunctional species in mixtures of non functional, mono- and bifunctional (per)fluoropolyethers which comprises the adsorption of a (per)fluoropolyether mixture onto an adsorbing stationary phase, a first desorption step with a supercritical fluid only and a second desorption step with the supercritical fluid and a mixture of a polar solvent.

    Abstract translation: 本发明涉及一种增加非功能性，单功能和双功能（全）氟聚醚的混合物中双官能物质含量的方法，其包括将（全）氟聚醚混合物吸附到吸附固定相上，第一解吸步骤与 超临界流体和超临界流体和极性溶剂的混合物的第二解吸步骤。

    Cyclophosphazene derivatives
    6.
    发明授权
    Cyclophosphazene derivatives 有权

    公开(公告)号：US10550226B2

    公开(公告)日：2020-02-04

    申请号：US15510559

    申请日：2015-09-08

    Applicant: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.

    Inventor： Roberto Valsecchi ,  Fabrizio Mutta

    IPC: G11B5/725 ,  C08G65/335 ,  C07F9/6593 ,  C10M107/38

    Abstract: The present invention relates to a phosphazene compound [compound (L)] comprising a cyclophosphazene central core wherein each phosphorus atom of said core bears a substituent independently selected from: a) a chain (A), said chain (A) comprising a (per)fluoropolyether chain [chain (Rf)], one or more aromatic or heteroaromatic moieties [moiety/ies (Arm)] and, optionally, one or more hydroxy groups and b) a chain (B), said chain (B) comprising a (per)fluoropolyether chain [chain (Rf)] and one or more hydroxy groups with the proviso that at least one phosphorous atom of the central core is substituted with chain (A) and to mixtures of compounds (L). The invention further relates to methods for preparing compounds (L), to lubricant compositions comprising compounds (L) and to methods for lubricating magnetic recording media comprising applying a compound (L) or a lubricant compositions containing them to the surface of said medium.

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