The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2007
Filed:
Mar. 22, 2007
Victor Filippovich Cherstkov, Moscow, RU;
Nina Ivanova Delyagina, Moscow, RU;
Viacheslav A. Petrov, Hockessin, DE (US);
Weiming Qiu, Wilmington, DE (US);
Paul R. Resnick, Cary, NC (US);
Victor Filippovich Cherstkov, Moscow, RU;
Nina Ivanova Delyagina, Moscow, RU;
Viacheslav A. Petrov, Hockessin, DE (US);
Weiming Qiu, Wilmington, DE (US);
Paul R. Resnick, Cary, NC (US);
E.I. du Pont de Nemours and Company, Wilmington, DE (US);
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.