Process for preparing fluoropolymer
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United States of America Patent
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May 14, 2002
Grant Date -
Sep 13, 2001
app pub date -
Feb 28, 2001
filing date -
Feb 29, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for preparing a fluoropolymer by the batchwise polymerization of a monomer mixture containing tetrafluoroethylene, in which, after the initiation of a reaction, the monomers are reacted under conditions such that the monomer mixture is supplemented to a polymerization system in an amount more than the amount of the monomers consumed and simultaneously the excessive unreacted monomers are discharged from the polymerization system to maintain the monomer composition in the polymerization system substantially the same as that of the composition of the monomer mixture initially charged, and the monomer mixture supplemented to the polymerization system contains a compound suppressing the autoexplosion of the monomers.
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