Tetrafluoroethylene → HCID 86747576, compound
Reaction equation
[F:1][C:2]([O:15][C:16]([F:29])=[C:17]([C:19]([F:28])([F:27])[C:20]([F:26])([F:25])[C:21]([F:24])([F:23])[F:22])[F:18])=[C:3]([F:14])[C:4]([F:13])([F:12])[C:5]([F:11])([F:10])[C:6]([F:9])([F:8])[F:7].FC(F)=C(F)F>>[F:7][C:6]([F:8])=[C:5]([F:11])[F:10].[F:1][C:2]([O:15][C:16]([F:29])=[C:17]([C:19]([F:27])([F:28])[C:20]([F:26])([F:25])[C:21]([F:22])([F:24])[F:23])[F:18])=[C:3]([F:14])[C:4]([F:13])([F:12])[C:5]([F:11])([F:10])[C:6]([F:9])([F:8])[F:7]Participants
Procedure
A 400-mL pressure vessel was loaded with 100 mL of bis(perfluoro-n-butyl) sulfide. The pressure vessel was then chilled and maintained around -20° C. while further loading with 20 mL of 0.05M HFPO dimer peroxide in bis(perfluoro-n-butyl) sulfide, pulling the air off with a vacuum pump, adding 5 g of perfluoropropylvinyl ether, and finally adding 50 g of tetrafluoroethylene. Polymerization set in during warm up, pressure dropping from 96 psi at 4.4° C. to 86 psi at 85° C. over a 14 minute period. The pressure continued to drop, falling to 3 psi four to five hours later at 35° C. The product was washed three times with 200 mL of 1:1 methanol:water, filtered, and dried under vacuum, giving 58 g of white powder (~100% conversion). Infrared analysis found 3.7 wt % perfluoropropylvinyl ether in the copolymer with tetrafluoroethylene. The polymer extruded through a melt indexer at 0.4 g/min at 372° C. with a 15-kg weight.
Workup
- customextruded through a melt indexer at 0.4 g/min at 372° C. with a 15-kg weight
Sources & evidence
- ORD record
- ord-4f69b862619441958a54d3acde2281e4
- Source dataset
- uspto-grants-1994_02
- Patent number
- US05286822
Reaction notes
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