E.i. Dupont De Nemours and Company

Aquiles C Sobrero

Robert Clayton Wheland

Edgar W Slocum

A free-radical initiated process for preparing fluorinated polymers wherein at least one gaseous fluoroolefin is polymerized in a stirred polymerizer, the improvement comprising preparing a non-volatile polymeric seed in a reaction zone separate from the polymerizer by decomposing initiator in the presence of fluoromonomer to form oligomeric free radicals and condensing said radicals onto previously prepared polymer; and conveying said non-volatile seed to the polymerizer.

Polymerization of fluoroolefins in presence of non-volatile polymeric

The polymerization of fluoromonomers can be accomplished without fouling by using gaseous monomers in the presence of at least one nonvolatile initiator and by recycling the initiator-free polymerizer gases through an external cooler.

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Parkersburg, WV, United States of America

Aquiles C Sobrero