Richard C Fernandez

US Patent:

7276624, Oct 2, 2007

Filed:

May 9, 2003

Appl. No.:

10/435003

Inventors:

Victor Filippovich Cherstkov - Moscow, RU
Nina Ivanova Delyagina - Moscow, RU
Richard E. Fernandez - Birmingham AL, US
Viacheslav A. Petrov - Hockessin DE, US
Paul R. Resnick - Cary NC, US

Assignee:

E. I. du Pont de Nemours and Company - Wilmington DE

International Classification:

C07C 309/00

US Classification:

562113

Abstract:

Hexafluoroisobutylene and its higher homologs are easily reacted with SOto give fluorosulfates of the formula CH═C(R)CFOSOF, 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═C(R)CFX, 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.

US Patent:

7531689, May 12, 2009

Filed:

Mar 22, 2007

Appl. No.:

11/726488

Inventors:

Victor Filippovich Cherstkov - Moscow, RU
Nina Ivanova Delyagina - Moscow, RU
Richard E. Fernandez - Birmingham AL, US
Viacheslav A. Petrov - Hockessin DE, US
Weiming Qiu - Wilmington DE, US
Paul R. Resnick - Cary NC, US

Assignee:

E.I. du Pont de Nemours and Company - Wilmington DE

International Classification:

C07C 309/00

US Classification:

562113

Abstract:

Hexafluoroisobutylene and its higher homologs are easily reacted with SOto give fluorosulfates of the formula CH═C(R)CFOSOF, 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═C(R)CFX, 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.

US Patent:

20070167589, Jul 19, 2007

Filed:

Mar 22, 2007

Appl. No.:

11/726772

Inventors:

Richard Fernandez - Birmingham AL, US
Weiming Qui - Wilmington DE, US
Paul Resnick - Cary NC, US
Robert Wheland - Wilmington DE, US

International Classification:

C08F 16/24

US Classification:

526247000, 526250000, 526255000, 526249000, 526330000

Abstract:

Hexafluoroisobutylene and its higher homologs are easily reacted with SOto give fluorosulfates of the formula CH═C(R)CFOSOF, 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═C(R)CFX, 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.

US Patent:

20090203865, Aug 13, 2009

Filed:

Apr 22, 2009

Appl. No.:

12/428041

Inventors:

RICHARD E. FERNANDEZ - BIRMINGHAM AL, US
WEIMING QIU - WILMINGTON DE, US
PAUL R. RESNICK - CARY NC, US
ROBERT CLAYTON WHELAND - WILMINGTON DE, US

Assignee:

E . I . DU PONT DE NEMOURS AND COMPANY - Wilmington DE

International Classification:

C08F 16/24
C08F 214/18

US Classification:

526247, 526253

Abstract:

Hexafluoroisobutylene and its higher homologs are easily reacted with SOto give fluorosulfates of the formula CH═C(R)CFOSOF, 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═C(R)CFX, 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.