Water → HCID 86747577, compound

A 400-mL pressure vessel was loaded with 100 mL of deionized water. The pressure vessel was then chilled and maintained around -20° C. while further loading with 5 mL of 0.05M HFPO dimer peroxide in 1,1,2,2-tetrafluorocyclobutane, 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, first pressure drop occurring above 20° C. The pressure thereafter dropped, falling to 43 psi three to four hours later at 35° C. The product was washed three times with 200 mL of methanol and once with 200 mL of Freon® 113, filtered, and dried under vacuum, giving 38 g of white powder that analysed for 2.6 weight percent PPVE by IR. Under melt indexer conditions, no melt flow was observed at 372° C. with a 15-kg weight.

1. temperatureThe pressure vessel was then chilled
2. customPolymerization
3. temperatureduring warm up
4. customoccurring above 20° C
5. additionThe pressure thereafter dropped
6. customfalling to 43 psi three to four hours later at 35° C
7. washThe product was washed three times with 200 mL of methanol
8. filtrationonce with 200 mL of Freon® 113, filtered
9. customdried under vacuum

ORD record

ord-41706b8e0b6e4847bfa2d453efecfbf3

Source dataset

uspto-grants-1994_02

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US05286822