IP Library › Granted Patent US 7,276,624
Granted Patent B2
US 7,276,624 · App. 10/435,003 · Granted Oct 2, 2007

Fluorosulfates of hexafluoroisobutylene and its higher homologs

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Quick Facts
Patent No.
US 7,276,624
App. No.
10/435,003
Granted
Oct 2, 2007
Kind
B2
Abstract

Hexafluoroisobutylene and its higher homologs are easily reacted with SO 3 to give fluorosulfates of the formula CH 2 ═C(R)CF 2 OSO 2 F, wherein R is a linear, branched or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen. These compounds react under mild conditions with many nucleophiles to give CH 2 ═C(R)CF 2 X, where X is derived from the nucleophile. This reaction provides a route to many substituted hexafluoroisobutylenes, which copolymerize easily with other fluoro- and hydrocarbon monomers such as vinylidene fluoride and ethylene.

Claims (5)

1. A compound having the formula CH 2 ═C(R)CF 2 OSO 2 F, wherein R is a linear, branched, or cyclic fluoroalkyl group comprised of 1 to 10 carbon atoms and may contain ether oxygen.

2. The compound of claim 1 wherein R is selected from the group consisting of trifluoromethyl, pentafluoroethyl, and heptafluoropropyl.

3. The compound of claim 1 where in R is trifluoromethyl.

4. The compound of claim 1 where in R is pentafluoroethyl.

5. A compound having the formula CH 2 ═C(CF 2 OSO 2 F) 2 .

Assignments (6)
SECURITY INTEREST Recorded Apr 4, 2018
From: THE CHEMOURS COMPANY FC, LLC
To: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
Reel/Frame 045846/0011 →
RELEASE OF SECURITY INTEREST Recorded Apr 4, 2018
From: JPMORGAN CHASE BANK, N.A., AS ADMINISTRATIVE AGENT
To: THE CHEMOURS COMPANY FC, LLC
Reel/Frame 045845/0913 →
SECURITY AGREEMENT Recorded Jun 10, 2015
From: THE CHEMOURS COMPANY FC LLC; THE CHEMOURS COMPANY TT, LLC
To: JPMORGAN CHASE BANK, N.A.
Reel/Frame 035839/0675 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Apr 15, 2015
From: E. I. DU PONT DE NEMOURS AND COMPANY
To: THE CHEMOURS COMPANY FC, LLC
Reel/Frame 035432/0023 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 18, 2004
From: CHERSTKOV VICTOR FILIPPOVICH; QIU, WEIMING; DELYAGINA NINA IVANOVA; RESNICK, PAUL R.; FERNANDEZ, RICHARD E.; WHELAND, ROBERT CLAYTON; PETROV, VIACHESLAV A.
To: E. I. DE PONT DE NEMOURS AND COMPANY
Reel/Frame 014640/0468 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 28, 2003
From: CHERSTKOV, VICTOR FILIPPOVICH; QIU, WEIMING; DELYAGINA, NINA IVANOVA; RESNICK, PAUL R.; FERNANDEZ, RICHARD E.; WHELAND, ROBERT CLAYTON; PETROV, VIACHESLAV A.
To: E.I. DU PONT DE NEMOURS AND COMPANY
Reel/Frame 014082/0174 →