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:
Sep. 04, 2001
Filed:
Dec. 06, 1996
William R. Dolbier, Jr., Gainesville, FL (US);
Xiao X. Rong, Gainesville, FL (US);
Walter E. Stalzer, Mentor, OH (US);
Other;
Abstract
A method of making TFPX using an S,2 type nucleophilic displacement reaction. The method includes reacting a nucleophilic fluorine molecule with a nonfluorinated-tetrahalo-p-xylene molecule. Exemplary nucleophilic fluorine molecules include, but are not limited to, CsF, KF, NaF and LiF. The nonfluorinated-tetrahalo-p-xylene molecules may include, &agr;,&agr;,&agr;′,&agr;′-tetrachloro-p-xylene, &agr;,&agr;,&agr;′,&agr;′-tetrabromo-p-xylene or &agr;,&agr;,&agr;′,&agr;′-tetraiodo-p-xylene. The reaction may be carried out in an open or closed container. Furthermore, the reaction may be carried out in the presence of a phase transfer catalyst. In certain embodiments, the reaction is carried in a substantially solvent-free environment.