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    METHOD FOR THE CONTROLLED POLYMERIZATION OF FLUOROMONOMERS
    2.
    发明公开
    METHOD FOR THE CONTROLLED POLYMERIZATION OF FLUOROMONOMERS 审中-公开
    VERFAHREN ZUR KONTROLLERTEN聚合VON FLUORMONOMEREN

    公开(公告)号：EP3143054A1

    公开(公告)日：2017-03-22

    申请号：EP15722708.3

    申请日：2015-05-11

    申请人： Solvay Specialty Polymers Italy S.p.A.

    发明人： DOSSI, Marco ,  COMINO, Giovanni ,  PONTA, Laura

    IPC分类号： C08F14/18 ,  C08F214/22 ,  C08F2/38

    CPC分类号： C08F214/22 ,  C08F2/22 ,  C08F2/38 ,  C08F14/22 ,  C08F14/26 ,  C08F214/222 ,  C08F214/225 ,  C08F214/262 ,  C08F214/265 ,  C08L27/16 ,  C08L2201/52

    摘要： The invention pertains to a method for emulsion polymerization of at least one fluoromonomer, said method comprising: (i) providing at least one aqueous emulsion comprising at least one surfactant and a monomer mixture [mixture (M)] comprising at least one fluoromonomer [monomer (F)] and optionally at least one additional monomer, and at least one RAFT/MADIX agent; (ii) initiating the polymerization of said monomer mixture in said aqueous emulsion adding at least one radical initiator; (iii) continuing the polymerization by adding additional amounts of said mixture (M) and said RAFT/MADIX agent, until converting the targeted amount of said mixture (M), and (iv) terminating the polymerization and recovering a latex of fluoropolymer [polymer (F)]; wherein the amount of RAFT/MADIX agent is comprised between 0.1 and 0.5% moles, with respect to the total amount of converted monomers of said monomer mixture, and wherein the amount of said RAFT/MADIX agent present in the aqueous emulsion when initiating the polymerization in step (ii) is of at most 50% with respect to the total amount of said RAFT/MADIX agent.

    摘要翻译： 本发明涉及一种用于至少一种含氟单体的乳液聚合的方法，所述方法包括：（i）提供至少一种包含至少一种表面活性剂的水乳液和包含至少一种含氟单体[单体（M））的单体混合物 （F）]和任选的至少一种另外的单体和至少一种RAFT / MADIX试剂; （ii）引发所述单体混合物在所述水性乳液中的聚合，加入至少一种自由基引发剂; （iii）通过加入额外量的所述混合物（M）和所述RAFT / MADIX试剂继续聚合，直到转化目标量的所述混合物（M），和（iv）终止聚合并回收含氟聚合物[聚合物 （F）]; 其中相对于所述单体混合物的转化单体的总量，RAFT / MADIX试剂的量为0.1至0.5摩尔％，并且其中当引发聚合时所述RAFT / MADIX试剂存在于水乳液中的量 在步骤（ii）中相对于所述RAFT / MADIX试剂的总量为至多50％。