公开(公告)号：US20150197589A1

公开(公告)日：2015-07-16

申请号：US14574758

申请日：2014-12-18

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

Inventor： Luca MERLO ,  Alessandro VENERONI ,  Elvira PAGANO ,  Claudio OLDANI

IPC: C08F116/14 ,  C08F261/06

CPC classification number: C08F116/14 ,  B01D71/32 ,  B01D71/68 ,  C08F128/02 ,  C08F214/182 ,  C08F228/02 ,  C08F261/06 ,  C08J5/18 ,  C08J5/2237 ,  C08J2327/18 ,  H01M8/1027 ,  H01M2300/0082

Abstract: A process for reducing the amount of soluble polymeric fractions in a sulfonyl fluoride polymer. The process comprises contacting the sulfonyl fluoride polymer with a fluorinated fluid followed by separation of the polymer from the fluid. The fluorinated fluid is selected from hydrofluoroethers and hydrofluoropolyethers. The invention further relates to sulfonyl fluoride polymers obtainable by the process and having a heat of fusion not exceeding 4 J/g and containing less than 15% by weight of polymeric fractions having an average content of monomeric units comprising a sulfonyl functional group exceeding 24 mole %. The sulfonyl fluoride polymers so obtained are particularly suitable for the preparation of ionomeric membranes for use in electrochemical devices.

Abstract translation: 用于减少磺酰氟聚合物中可溶性聚合物级分的量的方法。 该方法包括使磺酰氟聚合物与氟化流体接触，然后将聚合物与流体分离。 氟化流体选自氢氟醚和氢氟聚醚。 本发明还涉及通过该方法获得的磺化氟化物聚合物，其熔融热不超过4J / g，并且含有少于15％重量的具有包含超过24摩尔的磺酰基官能团的单体单元的平均含量的聚合物部分 ％。 如此获得的磺酰氟聚合物特别适用于制备用于电化学装置的离聚物膜。