PROCESSO DI POLIMERIZZAZIONE DI MONOMERI SOLFONICI
A polymerization process in microemulsion of: (I) one or more fluorinated monomers containing at least one ethylene unsaturation; (II) one or more fluorinated monomers containing sulphonyl groups -SO2F; said process comprising: a) preparation of an aqueous microemulsion, having a pH in the range 4-7...
Saved in:
Main Authors | , |
---|---|
Format | Patent |
Language | Italian |
Published |
27.08.2003
|
Edition | 4 |
Subjects | |
Online Access | Get full text |
Cover
Loading…
Summary: | A polymerization process in microemulsion of: (I) one or more fluorinated monomers containing at least one ethylene unsaturation; (II) one or more fluorinated monomers containing sulphonyl groups -SO2F; said process comprising: a) preparation of an aqueous microemulsion, having a pH in the range 4-7, of perfluoropolyethers (PFPEs); b) feeding of the microemulsion to the polymerization reactor, in an amount higher than 18 ml per litre of reaction medium; c) introduction of the monomer (II) in liquid form into the reactor, reactor pressurization with the gaseous monomers (I); d) addition of the initiator, and feeding of the monomers (I) during the polymerization so as to maintain constant the reactor pressure. |
---|---|
Bibliography: | Application Number: IT2000MI01417 |